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src/hotspot/share/runtime/globals.hpp
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@@ -25,38 +25,105 @@
#ifndef SHARE_RUNTIME_GLOBALS_HPP
#define SHARE_RUNTIME_GLOBALS_HPP
#include "compiler/compiler_globals.hpp"
#include "gc/shared/gc_globals.hpp"
+#include "runtime/flags/jvmFlagConstraintsCompiler.hpp"
+#include "runtime/flags/jvmFlagConstraintsRuntime.hpp"
#include "runtime/globals_shared.hpp"
#include "utilities/align.hpp"
#include "utilities/globalDefinitions.hpp"
#include "utilities/macros.hpp"
#include CPU_HEADER(globals)
#include OS_HEADER(globals)
#include OS_CPU_HEADER(globals)
-// develop flags are settable / visible only during development and are constant in the PRODUCT version
-// product flags are always settable / visible
-// notproduct flags are settable / visible only during development and are not declared in the PRODUCT version
-
-// A flag must be declared with one of the following types:
-// bool, int, uint, intx, uintx, size_t, ccstr, ccstrlist, double, or uint64_t.
-// The type "ccstr" and "ccstrlist" are an alias for "const char*" and is used
-// only in this file, because the macrology requires single-token type names.
-
-// Note: Diagnostic options not meant for VM tuning or for product modes.
+// Command-line flag specification in HotSpot is divided into individual modules.
+// Each module should have 2 files in the module's directory. For example, C2 has the
+// following 2 files:
+//
+// c2_globals.hpp - specification of all flags for C2, including meta-information
+// such as docs, range and constraints.
+// c2_globals.cpp - definitions of the C++ variables that implements these flags.
+//
+//
+// In the xxx_globals.hpp file, each flag must be specified with one of the
+// following 5 macros.
+//
+// Platform-Independent Flags -- each flag has 5 arguments: (type, name, default_value, attr, docs)
+//
+// PRODUCT_FLAG -- always settable
+// DEVELOP_FLAG -- settable only during development and are constant in the PRODUCT version
+// NOTPROD_FLAG -- settable only during development and are *not* declared in the PRODUCT version
+//
+// Platform-Dependent Flags -- each flag has 4 arguments: (type, name, attr, docs)
+//
+// PRODUCT_FLAG_PD
+// DEVELOP_FLAG_PD
+//
+// type: A flag must be declared with one of the following types:
+// bool, int, uint, intx, uintx, size_t, ccstr, ccstr, double, or uint64_t.
+//
+// The type "ccstr" is an alias for "const char*" because the macrology
+// requires single-token type names. For this type, you can optionally
+// set the JVMFlag::STRINGLIST bit in the <attr> argument. This allows you
+// to specify the flag multiple times on the command-line to build
+// a string list. These flags are printed as "ccstrlist" by -XX:PrintFlagsFinal.
+//
+// name: The name of the flag.
+//
+// default_value: The default value of the flag.
+// Note that the default values for the _PD flags are declared in
+// platform-dependent header files such as cpu/x86/c2_globals_x86.hpp
+//
+// attr: See discussion below on flag attributes
+//
+// docs: Description of the flag. This is mostly for the benefits of HotSpot
+// developers, and is excluded from PRODUCT builds.
+//
+//
+// Optionally, a flag can be given a range and/or constraint by using the following
+// macros:
+//
+// FLAG_RANGE(name, min, max)
+// FLAG_CONSTRAINT(name, func, phase)
+//
+// When a range is specified, the flag's attr must include JVMFlag::RANGE.
+// When a constraint is specified, the flag's attr must include JVMFlag::CONSTRAINT.
+//
+// For example:
+//
+// PRODUCT_FLAG(size_t, LargePageSizeInBytes, 0, JVMFlag::RANGE,
+// "Large page size (0 to let VM choose the page size)");
+// FLAG_RANGE( LargePageSizeInBytes, 0, max_uintx);
+//
+// PRODUCT_FLAG_PD(size_t,MetaspaceSize, JVMFlag::CONSTRAINT,
+// "Initial threshold (in bytes) at which a garbage collection "
+// "is done to reduce Metaspace usage");
+// FLAG_CONSTRAINT( MetaspaceSize, (void*)MetaspaceSizeConstraintFunc, JVMFlag::AfterErgo);
+//
+//
+// Command-line Flag Attributes
+//
+// The <attr> argument for each flag may be any combination of the following
+// bits.
+//
+// JVMFlag::MANAGEABLE
+// JVMFlag::DIAGNOSTIC
+// JVMFlag::EXPERIMENTAL
+//
+// DIAGNOSTIC options are not meant for VM tuning or for product modes.
// They are to be used for VM quality assurance or field diagnosis
// of VM bugs. They are hidden so that users will not be encouraged to
// try them as if they were VM ordinary execution options. However, they
// are available in the product version of the VM. Under instruction
// from support engineers, VM customers can turn them on to collect
// diagnostic information about VM problems. To use a VM diagnostic
// option, you must first specify +UnlockDiagnosticVMOptions.
// (This master switch also affects the behavior of -Xprintflags.)
//
-// experimental flags are in support of features that are not
+// EXPERIMENTAL flags are in support of features that are not
// part of the officially supported product, but are available
// for experimenting with. They could, for example, be performance
// features that may not have undergone full or rigorous QA, but which may
// help performance in some cases and released for experimentation
// by the community of users and developers. This flag also allows one to
@@ -68,11 +135,11 @@
//
// Nota bene: neither diagnostic nor experimental options should be used casually,
// and they are not supported on production loads, except under explicit
// direction from support engineers.
//
-// manageable flags are writeable external product flags.
+// MANAGEABLE flags are writeable external product flags.
// They are dynamically writeable through the JDK management interface
// (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole.
// These flags are external exported interface (see CCC). The list of
// manageable flags can be queried programmatically through the management
// interface.
@@ -81,2452 +148,2427 @@
// - the flag is defined in a CCC as an external exported interface.
// - the VM implementation supports dynamic setting of the flag.
// This implies that the VM must *always* query the flag variable
// and not reuse state related to the flag state at any given time.
// - you want the flag to be queried programmatically by the customers.
+
+
+// Additional flag attributes
//
-// product_rw flags are writeable internal product flags.
-// They are like "manageable" flags but for internal/private use.
-// The list of product_rw flags are internal/private flags which
-// may be changed/removed in a future release. It can be set
-// through the management interface to get/set value
-// when the name of flag is supplied.
-//
-// A flag can be made as "product_rw" only if
-// - the VM implementation supports dynamic setting of the flag.
-// This implies that the VM must *always* query the flag variable
-// and not reuse state related to the flag state at any given time.
-//
-// Note that when there is a need to support develop flags to be writeable,
-// it can be done in the same way as product_rw.
+// In addition to the 3 bits described above, more can be specified. These
+// usually only affects the printing of the flag (see java -XX:PrintFlagsFinal).
+// However, you can also write code to process a certain group of
+// flags. See JVMCIGlobals::check_jvmci_flags_are_consistent() for an example.
//
-// range is a macro that will expand to min and max arguments for range
-// checking code if provided - see jvmFlagRangeList.hpp
+// JVMFlag::PLATFORM_DEPENDENT
+// JVMFlag::C1
+// JVMFlag::C2
+// JVMFlag::ARCH
+// JVMFlag::JVMCI
//
-// constraint is a macro that will expand to custom function call
-// for constraint checking if provided - see jvmFlagConstraintList.hpp
+// To add these extra bits to a group of flags, you can use the FLAG_COMMON_ATTRS
+// macro. See c2_globals.cpp for an example.
+
// Default and minimum StringTable and SymbolTable size values
// Must be powers of 2
const size_t defaultStringTableSize = NOT_LP64(1024) LP64_ONLY(65536);
const size_t minimumStringTableSize = 128;
const size_t defaultSymbolTableSize = 32768; // 2^15
const size_t minimumSymbolTableSize = 1024;
-#define RUNTIME_FLAGS(develop, \
- develop_pd, \
- product, \
- product_pd, \
- diagnostic, \
- diagnostic_pd, \
- experimental, \
- notproduct, \
- manageable, \
- product_rw, \
- lp64_product, \
- range, \
- constraint) \
- \
- lp64_product(bool, UseCompressedOops, false, \
- "Use 32-bit object references in 64-bit VM. " \
- "lp64_product means flag is always constant in 32 bit VM") \
- \
- lp64_product(bool, UseCompressedClassPointers, false, \
- "Use 32-bit class pointers in 64-bit VM. " \
- "lp64_product means flag is always constant in 32 bit VM") \
- \
- notproduct(bool, CheckCompressedOops, true, \
- "Generate checks in encoding/decoding code in debug VM") \
- \
- product(uintx, HeapSearchSteps, 3 PPC64_ONLY(+17), \
- "Heap allocation steps through preferred address regions to find" \
- " where it can allocate the heap. Number of steps to take per " \
- "region.") \
- range(1, max_uintx) \
- \
- lp64_product(intx, ObjectAlignmentInBytes, 8, \
- "Default object alignment in bytes, 8 is minimum") \
- range(8, 256) \
- constraint(ObjectAlignmentInBytesConstraintFunc,AtParse) \
- \
- develop(bool, CleanChunkPoolAsync, true, \
- "Clean the chunk pool asynchronously") \
- \
- diagnostic(uint, HandshakeTimeout, 0, \
- "If nonzero set a timeout in milliseconds for handshakes") \
- \
- experimental(bool, AlwaysSafeConstructors, false, \
- "Force safe construction, as if all fields are final.") \
- \
- diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \
- "Enable normal processing of flags relating to field diagnostics")\
- \
- experimental(bool, UnlockExperimentalVMOptions, false, \
- "Enable normal processing of flags relating to experimental " \
- "features") \
- \
- product(bool, JavaMonitorsInStackTrace, true, \
- "Print information about Java monitor locks when the stacks are" \
- "dumped") \
- \
- product_pd(bool, UseLargePages, \
- "Use large page memory") \
- \
- product_pd(bool, UseLargePagesIndividualAllocation, \
- "Allocate large pages individually for better affinity") \
- \
- develop(bool, LargePagesIndividualAllocationInjectError, false, \
- "Fail large pages individual allocation") \
- \
- product(bool, UseLargePagesInMetaspace, false, \
- "Use large page memory in metaspace. " \
- "Only used if UseLargePages is enabled.") \
- \
- product(bool, UseNUMA, false, \
- "Use NUMA if available") \
- \
- product(bool, UseNUMAInterleaving, false, \
- "Interleave memory across NUMA nodes if available") \
- \
- product(size_t, NUMAInterleaveGranularity, 2*M, \
- "Granularity to use for NUMA interleaving on Windows OS") \
- range(os::vm_allocation_granularity(), NOT_LP64(2*G) LP64_ONLY(8192*G)) \
- \
- product(bool, ForceNUMA, false, \
- "Force NUMA optimizations on single-node/UMA systems") \
- \
- product(uintx, NUMAChunkResizeWeight, 20, \
- "Percentage (0-100) used to weight the current sample when " \
- "computing exponentially decaying average for " \
- "AdaptiveNUMAChunkSizing") \
- range(0, 100) \
- \
- product(size_t, NUMASpaceResizeRate, 1*G, \
- "Do not reallocate more than this amount per collection") \
- range(0, max_uintx) \
- \
- product(bool, UseAdaptiveNUMAChunkSizing, true, \
- "Enable adaptive chunk sizing for NUMA") \
- \
- product(bool, NUMAStats, false, \
- "Print NUMA stats in detailed heap information") \
- \
- product(uintx, NUMAPageScanRate, 256, \
- "Maximum number of pages to include in the page scan procedure") \
- range(0, max_uintx) \
- \
- product(bool, UseAES, false, \
- "Control whether AES instructions are used when available") \
- \
- product(bool, UseFMA, false, \
- "Control whether FMA instructions are used when available") \
- \
- product(bool, UseSHA, false, \
- "Control whether SHA instructions are used when available") \
- \
- diagnostic(bool, UseGHASHIntrinsics, false, \
- "Use intrinsics for GHASH versions of crypto") \
- \
- product(bool, UseBASE64Intrinsics, false, \
- "Use intrinsics for java.util.Base64") \
- \
- product(size_t, LargePageSizeInBytes, 0, \
- "Large page size (0 to let VM choose the page size)") \
- range(0, max_uintx) \
- \
- product(size_t, LargePageHeapSizeThreshold, 128*M, \
- "Use large pages if maximum heap is at least this big") \
- range(0, max_uintx) \
- \
- product(bool, ForceTimeHighResolution, false, \
- "Using high time resolution (for Win32 only)") \
- \
- develop(bool, TracePcPatching, false, \
- "Trace usage of frame::patch_pc") \
- \
- develop(bool, TraceRelocator, false, \
- "Trace the bytecode relocator") \
- \
- develop(bool, TraceLongCompiles, false, \
- "Print out every time compilation is longer than " \
- "a given threshold") \
- \
- diagnostic(bool, SafepointALot, false, \
- "Generate a lot of safepoints. This works with " \
- "GuaranteedSafepointInterval") \
- \
- diagnostic(bool, HandshakeALot, false, \
- "Generate a lot of handshakes. This works with " \
- "GuaranteedSafepointInterval") \
- \
- product_pd(bool, BackgroundCompilation, \
- "A thread requesting compilation is not blocked during " \
- "compilation") \
- \
- product(bool, PrintVMQWaitTime, false, \
- "(Deprecated) Print out the waiting time in VM operation queue") \
- \
- product(bool, MethodFlushing, true, \
- "Reclamation of zombie and not-entrant methods") \
- \
- develop(bool, VerifyStack, false, \
- "Verify stack of each thread when it is entering a runtime call") \
- \
- diagnostic(bool, ForceUnreachable, false, \
- "Make all non code cache addresses to be unreachable by " \
- "forcing use of 64bit literal fixups") \
- \
- notproduct(bool, StressDerivedPointers, false, \
- "Force scavenge when a derived pointer is detected on stack " \
- "after rtm call") \
- \
- develop(bool, TraceDerivedPointers, false, \
- "Trace traversal of derived pointers on stack") \
- \
- notproduct(bool, TraceCodeBlobStacks, false, \
- "Trace stack-walk of codeblobs") \
- \
- notproduct(bool, PrintRewrites, false, \
- "Print methods that are being rewritten") \
- \
- product(bool, UseInlineCaches, true, \
- "Use Inline Caches for virtual calls ") \
- \
- diagnostic(bool, InlineArrayCopy, true, \
- "Inline arraycopy native that is known to be part of " \
- "base library DLL") \
- \
- diagnostic(bool, InlineObjectHash, true, \
- "Inline Object::hashCode() native that is known to be part " \
- "of base library DLL") \
- \
- diagnostic(bool, InlineNatives, true, \
- "Inline natives that are known to be part of base library DLL") \
- \
- diagnostic(bool, InlineMathNatives, true, \
- "Inline SinD, CosD, etc.") \
- \
- diagnostic(bool, InlineClassNatives, true, \
- "Inline Class.isInstance, etc") \
- \
- diagnostic(bool, InlineThreadNatives, true, \
- "Inline Thread.currentThread, etc") \
- \
- diagnostic(bool, InlineUnsafeOps, true, \
- "Inline memory ops (native methods) from Unsafe") \
- \
- product(bool, CriticalJNINatives, true, \
- "Check for critical JNI entry points") \
- \
- notproduct(bool, StressCriticalJNINatives, false, \
- "Exercise register saving code in critical natives") \
- \
- diagnostic(bool, UseAESIntrinsics, false, \
- "Use intrinsics for AES versions of crypto") \
- \
- diagnostic(bool, UseAESCTRIntrinsics, false, \
- "Use intrinsics for the paralleled version of AES/CTR crypto") \
- \
- diagnostic(bool, UseSHA1Intrinsics, false, \
- "Use intrinsics for SHA-1 crypto hash function. " \
- "Requires that UseSHA is enabled.") \
- \
- diagnostic(bool, UseSHA256Intrinsics, false, \
- "Use intrinsics for SHA-224 and SHA-256 crypto hash functions. " \
- "Requires that UseSHA is enabled.") \
- \
- diagnostic(bool, UseSHA512Intrinsics, false, \
- "Use intrinsics for SHA-384 and SHA-512 crypto hash functions. " \
- "Requires that UseSHA is enabled.") \
- \
- diagnostic(bool, UseCRC32Intrinsics, false, \
- "use intrinsics for java.util.zip.CRC32") \
- \
- diagnostic(bool, UseCRC32CIntrinsics, false, \
- "use intrinsics for java.util.zip.CRC32C") \
- \
- diagnostic(bool, UseAdler32Intrinsics, false, \
- "use intrinsics for java.util.zip.Adler32") \
- \
- diagnostic(bool, UseVectorizedMismatchIntrinsic, false, \
- "Enables intrinsification of ArraysSupport.vectorizedMismatch()") \
- \
- diagnostic(ccstrlist, DisableIntrinsic, "", \
- "do not expand intrinsics whose (internal) names appear here") \
- \
- develop(bool, TraceCallFixup, false, \
- "Trace all call fixups") \
- \
- develop(bool, DeoptimizeALot, false, \
- "Deoptimize at every exit from the runtime system") \
- \
- notproduct(ccstrlist, DeoptimizeOnlyAt, "", \
- "A comma separated list of bcis to deoptimize at") \
- \
- develop(bool, DeoptimizeRandom, false, \
- "Deoptimize random frames on random exit from the runtime system")\
- \
- notproduct(bool, ZombieALot, false, \
- "Create zombies (non-entrant) at exit from the runtime system") \
- \
- notproduct(bool, WalkStackALot, false, \
- "Trace stack (no print) at every exit from the runtime system") \
- \
- product(bool, Debugging, false, \
- "Set when executing debug methods in debug.cpp " \
- "(to prevent triggering assertions)") \
- \
- notproduct(bool, VerifyLastFrame, false, \
- "Verify oops on last frame on entry to VM") \
- \
- product(bool, SafepointTimeout, false, \
- "Time out and warn or fail after SafepointTimeoutDelay " \
- "milliseconds if failed to reach safepoint") \
- \
- diagnostic(bool, AbortVMOnSafepointTimeout, false, \
- "Abort upon failure to reach safepoint (see SafepointTimeout)") \
- \
- diagnostic(bool, AbortVMOnVMOperationTimeout, false, \
- "Abort upon failure to complete VM operation promptly") \
- \
- diagnostic(intx, AbortVMOnVMOperationTimeoutDelay, 1000, \
- "Delay in milliseconds for option AbortVMOnVMOperationTimeout") \
- range(0, max_intx) \
- \
- /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \
- /* typically, at most a few retries are needed */ \
- product(intx, SuspendRetryCount, 50, \
- "Maximum retry count for an external suspend request") \
- range(0, max_intx) \
- \
- product(intx, SuspendRetryDelay, 5, \
- "Milliseconds to delay per retry (* current_retry_count)") \
- range(0, max_intx) \
- \
- product(bool, AssertOnSuspendWaitFailure, false, \
- "Assert/Guarantee on external suspend wait failure") \
- \
- product(bool, TraceSuspendWaitFailures, false, \
- "Trace external suspend wait failures") \
- \
- product(bool, MaxFDLimit, true, \
- "Bump the number of file descriptors to maximum in Solaris") \
- \
- diagnostic(bool, LogEvents, true, \
- "Enable the various ring buffer event logs") \
- \
- diagnostic(uintx, LogEventsBufferEntries, 20, \
- "Number of ring buffer event logs") \
- range(1, NOT_LP64(1*K) LP64_ONLY(1*M)) \
- \
- diagnostic(bool, BytecodeVerificationRemote, true, \
- "Enable the Java bytecode verifier for remote classes") \
- \
- diagnostic(bool, BytecodeVerificationLocal, false, \
- "Enable the Java bytecode verifier for local classes") \
- \
- develop(bool, ForceFloatExceptions, trueInDebug, \
- "Force exceptions on FP stack under/overflow") \
- \
- develop(bool, VerifyStackAtCalls, false, \
- "Verify that the stack pointer is unchanged after calls") \
- \
- develop(bool, TraceJavaAssertions, false, \
- "Trace java language assertions") \
- \
- notproduct(bool, VerifyCodeCache, false, \
- "Verify code cache on memory allocation/deallocation") \
- \
- develop(bool, UseMallocOnly, false, \
- "Use only malloc/free for allocation (no resource area/arena)") \
- \
- develop(bool, ZapResourceArea, trueInDebug, \
- "Zap freed resource/arena space with 0xABABABAB") \
- \
- notproduct(bool, ZapVMHandleArea, trueInDebug, \
- "Zap freed VM handle space with 0xBCBCBCBC") \
- \
- notproduct(bool, ZapStackSegments, trueInDebug, \
- "Zap allocated/freed stack segments with 0xFADFADED") \
- \
- develop(bool, ZapUnusedHeapArea, trueInDebug, \
- "Zap unused heap space with 0xBAADBABE") \
- \
- develop(bool, CheckZapUnusedHeapArea, false, \
- "Check zapping of unused heap space") \
- \
- develop(bool, ZapFillerObjects, trueInDebug, \
- "Zap filler objects with 0xDEAFBABE") \
- \
- develop(bool, PrintVMMessages, true, \
- "Print VM messages on console") \
- \
- notproduct(uintx, ErrorHandlerTest, 0, \
- "If > 0, provokes an error after VM initialization; the value " \
- "determines which error to provoke. See test_error_handler() " \
- "in vmError.cpp.") \
- \
- notproduct(uintx, TestCrashInErrorHandler, 0, \
- "If > 0, provokes an error inside VM error handler (a secondary " \
- "crash). see test_error_handler() in vmError.cpp") \
- \
- notproduct(bool, TestSafeFetchInErrorHandler, false, \
- "If true, tests SafeFetch inside error handler.") \
- \
- notproduct(bool, TestUnresponsiveErrorHandler, false, \
- "If true, simulates an unresponsive error handler.") \
- \
- develop(bool, Verbose, false, \
- "Print additional debugging information from other modes") \
- \
- develop(bool, PrintMiscellaneous, false, \
- "Print uncategorized debugging information (requires +Verbose)") \
- \
- develop(bool, WizardMode, false, \
- "Print much more debugging information") \
- \
- product(bool, ShowMessageBoxOnError, false, \
- "Keep process alive on VM fatal error") \
- \
- product(bool, CreateCoredumpOnCrash, true, \
- "Create core/mini dump on VM fatal error") \
- \
- product(uint64_t, ErrorLogTimeout, 2 * 60, \
- "Timeout, in seconds, to limit the time spent on writing an " \
- "error log in case of a crash.") \
- range(0, (uint64_t)max_jlong/1000) \
- \
- product_pd(bool, UseOSErrorReporting, \
- "Let VM fatal error propagate to the OS (ie. WER on Windows)") \
- \
- product(bool, SuppressFatalErrorMessage, false, \
- "Report NO fatal error message (avoid deadlock)") \
- \
- product(ccstrlist, OnError, "", \
- "Run user-defined commands on fatal error; see VMError.cpp " \
- "for examples") \
- \
- product(ccstrlist, OnOutOfMemoryError, "", \
- "Run user-defined commands on first java.lang.OutOfMemoryError") \
- \
- manageable(bool, HeapDumpBeforeFullGC, false, \
- "Dump heap to file before any major stop-the-world GC") \
- \
- manageable(bool, HeapDumpAfterFullGC, false, \
- "Dump heap to file after any major stop-the-world GC") \
- \
- manageable(bool, HeapDumpOnOutOfMemoryError, false, \
- "Dump heap to file when java.lang.OutOfMemoryError is thrown") \
- \
- manageable(ccstr, HeapDumpPath, NULL, \
- "When HeapDumpOnOutOfMemoryError is on, the path (filename or " \
- "directory) of the dump file (defaults to java_pid<pid>.hprof " \
- "in the working directory)") \
- \
- develop(bool, BreakAtWarning, false, \
- "Execute breakpoint upon encountering VM warning") \
- \
- product(ccstr, NativeMemoryTracking, "off", \
- "Native memory tracking options") \
- \
- diagnostic(bool, PrintNMTStatistics, false, \
- "Print native memory tracking summary data if it is on") \
- \
- diagnostic(bool, LogCompilation, false, \
- "Log compilation activity in detail to LogFile") \
- \
- product(bool, PrintCompilation, false, \
- "Print compilations") \
- \
- product(bool, PrintExtendedThreadInfo, false, \
- "Print more information in thread dump") \
- \
- diagnostic(intx, ScavengeRootsInCode, 2, \
- "0: do not allow scavengable oops in the code cache; " \
- "1: allow scavenging from the code cache; " \
- "2: emit as many constants as the compiler can see") \
- range(0, 2) \
- \
- product(bool, AlwaysRestoreFPU, false, \
- "Restore the FPU control word after every JNI call (expensive)") \
- \
- diagnostic(bool, PrintCompilation2, false, \
- "Print additional statistics per compilation") \
- \
- diagnostic(bool, PrintAdapterHandlers, false, \
- "Print code generated for i2c/c2i adapters") \
- \
- diagnostic(bool, VerifyAdapterCalls, trueInDebug, \
- "Verify that i2c/c2i adapters are called properly") \
- \
- develop(bool, VerifyAdapterSharing, false, \
- "Verify that the code for shared adapters is the equivalent") \
- \
- diagnostic(bool, PrintAssembly, false, \
- "Print assembly code (using external disassembler.so)") \
- \
- diagnostic(ccstr, PrintAssemblyOptions, NULL, \
- "Print options string passed to disassembler.so") \
- \
- notproduct(bool, PrintNMethodStatistics, false, \
- "Print a summary statistic for the generated nmethods") \
- \
- diagnostic(bool, PrintNMethods, false, \
- "Print assembly code for nmethods when generated") \
- \
- diagnostic(bool, PrintNativeNMethods, false, \
- "Print assembly code for native nmethods when generated") \
- \
- develop(bool, PrintDebugInfo, false, \
- "Print debug information for all nmethods when generated") \
- \
- develop(bool, PrintRelocations, false, \
- "Print relocation information for all nmethods when generated") \
- \
- develop(bool, PrintDependencies, false, \
- "Print dependency information for all nmethods when generated") \
- \
- develop(bool, PrintExceptionHandlers, false, \
- "Print exception handler tables for all nmethods when generated") \
- \
- develop(bool, StressCompiledExceptionHandlers, false, \
- "Exercise compiled exception handlers") \
- \
- develop(bool, InterceptOSException, false, \
- "Start debugger when an implicit OS (e.g. NULL) " \
- "exception happens") \
- \
- product(bool, PrintCodeCache, false, \
- "Print the code cache memory usage when exiting") \
- \
- develop(bool, PrintCodeCache2, false, \
- "Print detailed usage information on the code cache when exiting")\
- \
- product(bool, PrintCodeCacheOnCompilation, false, \
- "Print the code cache memory usage each time a method is " \
- "compiled") \
- \
- diagnostic(bool, PrintCodeHeapAnalytics, false, \
- "Print code heap usage statistics on exit and on full condition") \
- \
- diagnostic(bool, PrintStubCode, false, \
- "Print generated stub code") \
- \
- product(bool, StackTraceInThrowable, true, \
- "Collect backtrace in throwable when exception happens") \
- \
- product(bool, OmitStackTraceInFastThrow, true, \
- "Omit backtraces for some 'hot' exceptions in optimized code") \
- \
- manageable(bool, ShowCodeDetailsInExceptionMessages, false, \
- "Show exception messages from RuntimeExceptions that contain " \
- "snippets of the failing code. Disable this to improve privacy.") \
- \
- product(bool, PrintWarnings, true, \
- "Print JVM warnings to output stream") \
- \
- notproduct(uintx, WarnOnStalledSpinLock, 0, \
- "Print warnings for stalled SpinLocks") \
- \
- product(bool, RegisterFinalizersAtInit, true, \
- "Register finalizable objects at end of Object.<init> or " \
- "after allocation") \
- \
- develop(bool, RegisterReferences, true, \
- "Tell whether the VM should register soft/weak/final/phantom " \
- "references") \
- \
- develop(bool, IgnoreRewrites, false, \
- "Suppress rewrites of bytecodes in the oopmap generator. " \
- "This is unsafe!") \
- \
- develop(bool, PrintCodeCacheExtension, false, \
- "Print extension of code cache") \
- \
- develop(bool, UsePrivilegedStack, true, \
- "Enable the security JVM functions") \
- \
- develop(bool, ProtectionDomainVerification, true, \
- "Verify protection domain before resolution in system dictionary")\
- \
- product(bool, ClassUnloading, true, \
- "Do unloading of classes") \
- \
- product(bool, ClassUnloadingWithConcurrentMark, true, \
- "Do unloading of classes with a concurrent marking cycle") \
- \
- develop(bool, DisableStartThread, false, \
- "Disable starting of additional Java threads " \
- "(for debugging only)") \
- \
- develop(bool, MemProfiling, false, \
- "Write memory usage profiling to log file") \
- \
- notproduct(bool, PrintSystemDictionaryAtExit, false, \
- "Print the system dictionary at exit") \
- \
- diagnostic(bool, DynamicallyResizeSystemDictionaries, true, \
- "Dynamically resize system dictionaries as needed") \
- \
- product(bool, AlwaysLockClassLoader, false, \
- "Require the VM to acquire the class loader lock before calling " \
- "loadClass() even for class loaders registering " \
- "as parallel capable") \
- \
- product(bool, AllowParallelDefineClass, false, \
- "Allow parallel defineClass requests for class loaders " \
- "registering as parallel capable") \
- \
- product_pd(bool, DontYieldALot, \
- "Throw away obvious excess yield calls") \
- \
- develop(bool, UseDetachedThreads, true, \
- "Use detached threads that are recycled upon termination " \
- "(for Solaris only)") \
- \
- experimental(bool, DisablePrimordialThreadGuardPages, false, \
- "Disable the use of stack guard pages if the JVM is loaded " \
- "on the primordial process thread") \
- \
- product(bool, UseLWPSynchronization, true, \
- "Use LWP-based instead of libthread-based synchronization " \
- "(SPARC only)") \
- \
- product(intx, MonitorBound, 0, "(Deprecated) Bound Monitor population") \
- range(0, max_jint) \
- \
- experimental(intx, MonitorUsedDeflationThreshold, 90, \
- "Percentage of used monitors before triggering cleanup " \
- "safepoint which deflates monitors (0 is off). " \
- "The check is performed on GuaranteedSafepointInterval.") \
- range(0, 100) \
- \
- experimental(intx, hashCode, 5, \
- "(Unstable) select hashCode generation algorithm") \
- \
- product(bool, FilterSpuriousWakeups, true, \
- "When true prevents OS-level spurious, or premature, wakeups " \
- "from Object.wait (Ignored for Windows)") \
- \
- develop(bool, UsePthreads, false, \
- "Use pthread-based instead of libthread-based synchronization " \
- "(SPARC only)") \
- \
- product(bool, ReduceSignalUsage, false, \
- "Reduce the use of OS signals in Java and/or the VM") \
- \
- develop(bool, LoadLineNumberTables, true, \
- "Tell whether the class file parser loads line number tables") \
- \
- develop(bool, LoadLocalVariableTables, true, \
- "Tell whether the class file parser loads local variable tables") \
- \
- develop(bool, LoadLocalVariableTypeTables, true, \
- "Tell whether the class file parser loads local variable type" \
- "tables") \
- \
- product(bool, AllowUserSignalHandlers, false, \
- "Do not complain if the application installs signal handlers " \
- "(Solaris & Linux only)") \
- \
- product(bool, UseSignalChaining, true, \
- "Use signal-chaining to invoke signal handlers installed " \
- "by the application (Solaris & Linux only)") \
- \
- product(bool, RestoreMXCSROnJNICalls, false, \
- "Restore MXCSR when returning from JNI calls") \
- \
- product(bool, CheckJNICalls, false, \
- "Verify all arguments to JNI calls") \
- \
- product(bool, UseFastJNIAccessors, true, \
- "Use optimized versions of Get<Primitive>Field") \
- \
- product(intx, MaxJNILocalCapacity, 65536, \
- "Maximum allowable local JNI handle capacity to " \
- "EnsureLocalCapacity() and PushLocalFrame(), " \
- "where <= 0 is unlimited, default: 65536") \
- range(min_intx, max_intx) \
- \
- product(bool, EagerXrunInit, false, \
- "Eagerly initialize -Xrun libraries; allows startup profiling, " \
- "but not all -Xrun libraries may support the state of the VM " \
- "at this time") \
- \
- product(bool, PreserveAllAnnotations, false, \
- "Preserve RuntimeInvisibleAnnotations as well " \
- "as RuntimeVisibleAnnotations") \
- \
- develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \
- "Number of OutOfMemoryErrors preallocated with backtrace") \
- \
- product(bool, UseXMMForArrayCopy, false, \
- "Use SSE2 MOVQ instruction for Arraycopy") \
- \
- notproduct(bool, PrintFieldLayout, false, \
- "Print field layout for each class") \
- \
- /* Need to limit the extent of the padding to reasonable size. */\
- /* 8K is well beyond the reasonable HW cache line size, even with */\
- /* aggressive prefetching, while still leaving the room for segregating */\
- /* among the distinct pages. */\
- product(intx, ContendedPaddingWidth, 128, \
- "How many bytes to pad the fields/classes marked @Contended with")\
- range(0, 8192) \
- constraint(ContendedPaddingWidthConstraintFunc,AfterErgo) \
- \
- product(bool, EnableContended, true, \
- "Enable @Contended annotation support") \
- \
- product(bool, RestrictContended, true, \
- "Restrict @Contended to trusted classes") \
- \
- product(bool, UseBiasedLocking, true, \
- "Enable biased locking in JVM") \
- \
- product(intx, BiasedLockingStartupDelay, 0, \
- "Number of milliseconds to wait before enabling biased locking") \
- range(0, (intx)(max_jint-(max_jint%PeriodicTask::interval_gran))) \
- constraint(BiasedLockingStartupDelayFunc,AfterErgo) \
- \
- diagnostic(bool, PrintBiasedLockingStatistics, false, \
- "Print statistics of biased locking in JVM") \
- \
- product(intx, BiasedLockingBulkRebiasThreshold, 20, \
- "Threshold of number of revocations per type to try to " \
- "rebias all objects in the heap of that type") \
- range(0, max_intx) \
- constraint(BiasedLockingBulkRebiasThresholdFunc,AfterErgo) \
- \
- product(intx, BiasedLockingBulkRevokeThreshold, 40, \
- "Threshold of number of revocations per type to permanently " \
- "revoke biases of all objects in the heap of that type") \
- range(0, max_intx) \
- constraint(BiasedLockingBulkRevokeThresholdFunc,AfterErgo) \
- \
- product(intx, BiasedLockingDecayTime, 25000, \
- "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \
- "type after previous bulk rebias") \
- range(500, max_intx) \
- constraint(BiasedLockingDecayTimeFunc,AfterErgo) \
- \
- product(bool, ExitOnOutOfMemoryError, false, \
- "JVM exits on the first occurrence of an out-of-memory error") \
- \
- product(bool, CrashOnOutOfMemoryError, false, \
- "JVM aborts, producing an error log and core/mini dump, on the " \
- "first occurrence of an out-of-memory error") \
- \
- /* tracing */ \
- \
- develop(bool, StressRewriter, false, \
- "Stress linktime bytecode rewriting") \
- \
- product(ccstr, TraceJVMTI, NULL, \
- "Trace flags for JVMTI functions and events") \
- \
- /* This option can change an EMCP method into an obsolete method. */ \
- /* This can affect tests that except specific methods to be EMCP. */ \
- /* This option should be used with caution. */ \
- product(bool, StressLdcRewrite, false, \
- "Force ldc -> ldc_w rewrite during RedefineClasses") \
- \
- /* change to false by default sometime after Mustang */ \
- product(bool, VerifyMergedCPBytecodes, true, \
- "Verify bytecodes after RedefineClasses constant pool merging") \
- \
- product(bool, AllowRedefinitionToAddDeleteMethods, false, \
- "(Deprecated) Allow redefinition to add and delete private " \
- "static or final methods for compatibility with old releases") \
- \
- develop(bool, TraceBytecodes, false, \
- "Trace bytecode execution") \
- \
- develop(bool, TraceICs, false, \
- "Trace inline cache changes") \
- \
- notproduct(bool, TraceInvocationCounterOverflow, false, \
- "Trace method invocation counter overflow") \
- \
- develop(bool, TraceInlineCacheClearing, false, \
- "Trace clearing of inline caches in nmethods") \
- \
- develop(bool, TraceDependencies, false, \
- "Trace dependencies") \
- \
- develop(bool, VerifyDependencies, trueInDebug, \
- "Exercise and verify the compilation dependency mechanism") \
- \
- develop(bool, TraceNewOopMapGeneration, false, \
- "Trace OopMapGeneration") \
- \
- develop(bool, TraceNewOopMapGenerationDetailed, false, \
- "Trace OopMapGeneration: print detailed cell states") \
- \
- develop(bool, TimeOopMap, false, \
- "Time calls to GenerateOopMap::compute_map() in sum") \
- \
- develop(bool, TimeOopMap2, false, \
- "Time calls to GenerateOopMap::compute_map() individually") \
- \
- develop(bool, TraceOopMapRewrites, false, \
- "Trace rewriting of method oops during oop map generation") \
- \
- develop(bool, TraceICBuffer, false, \
- "Trace usage of IC buffer") \
- \
- develop(bool, TraceCompiledIC, false, \
- "Trace changes of compiled IC") \
- \
- develop(bool, FLSVerifyDictionary, false, \
- "Do lots of (expensive) FLS dictionary verification") \
- \
- \
- notproduct(bool, CheckMemoryInitialization, false, \
- "Check memory initialization") \
- \
- product(uintx, ProcessDistributionStride, 4, \
- "Stride through processors when distributing processes") \
- range(0, max_juint) \
- \
- develop(bool, TraceFinalizerRegistration, false, \
- "Trace registration of final references") \
- \
- product(bool, IgnoreEmptyClassPaths, false, \
- "Ignore empty path elements in -classpath") \
- \
- product(size_t, InitialBootClassLoaderMetaspaceSize, \
- NOT_LP64(2200*K) LP64_ONLY(4*M), \
- "Initial size of the boot class loader data metaspace") \
- range(30*K, max_uintx/BytesPerWord) \
- constraint(InitialBootClassLoaderMetaspaceSizeConstraintFunc, AfterErgo)\
- \
- product(bool, PrintHeapAtSIGBREAK, true, \
- "Print heap layout in response to SIGBREAK") \
- \
- manageable(bool, PrintClassHistogram, false, \
- "Print a histogram of class instances") \
- \
- experimental(double, ObjectCountCutOffPercent, 0.5, \
- "The percentage of the used heap that the instances of a class " \
- "must occupy for the class to generate a trace event") \
- range(0.0, 100.0) \
- \
- /* JVMTI heap profiling */ \
- \
- diagnostic(bool, TraceJVMTIObjectTagging, false, \
- "Trace JVMTI object tagging calls") \
- \
- diagnostic(bool, VerifyBeforeIteration, false, \
- "Verify memory system before JVMTI iteration") \
- \
- /* compiler interface */ \
- \
- develop(bool, CIPrintCompilerName, false, \
- "when CIPrint is active, print the name of the active compiler") \
- \
- diagnostic(bool, CIPrintCompileQueue, false, \
- "display the contents of the compile queue whenever a " \
- "compilation is enqueued") \
- \
- develop(bool, CIPrintRequests, false, \
- "display every request for compilation") \
- \
- product(bool, CITime, false, \
- "collect timing information for compilation") \
- \
- develop(bool, CITimeVerbose, false, \
- "be more verbose in compilation timings") \
- \
- develop(bool, CITimeEach, false, \
- "display timing information after each successful compilation") \
- \
- develop(bool, CICountOSR, false, \
- "use a separate counter when assigning ids to osr compilations") \
- \
- develop(bool, CICompileNatives, true, \
- "compile native methods if supported by the compiler") \
- \
- develop_pd(bool, CICompileOSR, \
- "compile on stack replacement methods if supported by the " \
- "compiler") \
- \
- develop(bool, CIPrintMethodCodes, false, \
- "print method bytecodes of the compiled code") \
- \
- develop(bool, CIPrintTypeFlow, false, \
- "print the results of ciTypeFlow analysis") \
- \
- develop(bool, CITraceTypeFlow, false, \
- "detailed per-bytecode tracing of ciTypeFlow analysis") \
- \
- develop(intx, OSROnlyBCI, -1, \
- "OSR only at this bci. Negative values mean exclude that bci") \
- \
- /* compiler */ \
- \
- /* notice: the max range value here is max_jint, not max_intx */ \
- /* because of overflow issue */ \
- product(intx, CICompilerCount, CI_COMPILER_COUNT, \
- "Number of compiler threads to run") \
- range(0, max_jint) \
- constraint(CICompilerCountConstraintFunc, AfterErgo) \
- \
- product(bool, UseDynamicNumberOfCompilerThreads, true, \
- "Dynamically choose the number of parallel compiler threads") \
- \
- diagnostic(bool, ReduceNumberOfCompilerThreads, true, \
- "Reduce the number of parallel compiler threads when they " \
- "are not used") \
- \
- diagnostic(bool, TraceCompilerThreads, false, \
- "Trace creation and removal of compiler threads") \
- \
- develop(bool, InjectCompilerCreationFailure, false, \
- "Inject thread creation failures for " \
- "UseDynamicNumberOfCompilerThreads") \
- \
- develop(bool, UseStackBanging, true, \
- "use stack banging for stack overflow checks (required for " \
- "proper StackOverflow handling; disable only to measure cost " \
- "of stackbanging)") \
- \
- develop(bool, GenerateSynchronizationCode, true, \
- "generate locking/unlocking code for synchronized methods and " \
- "monitors") \
- \
- develop(bool, GenerateRangeChecks, true, \
- "Generate range checks for array accesses") \
- \
- diagnostic_pd(bool, ImplicitNullChecks, \
- "Generate code for implicit null checks") \
- \
- product_pd(bool, TrapBasedNullChecks, \
- "Generate code for null checks that uses a cmp and trap " \
- "instruction raising SIGTRAP. This is only used if an access to" \
- "null (+offset) will not raise a SIGSEGV, i.e.," \
- "ImplicitNullChecks don't work (PPC64).") \
- \
- diagnostic(bool, EnableThreadSMRExtraValidityChecks, true, \
- "Enable Thread SMR extra validity checks") \
- \
- diagnostic(bool, EnableThreadSMRStatistics, trueInDebug, \
- "Enable Thread SMR Statistics") \
- \
- product(bool, UseNotificationThread, true, \
- "Use Notification Thread") \
- \
- product(bool, Inline, true, \
- "Enable inlining") \
- \
- product(bool, ClipInlining, true, \
- "Clip inlining if aggregate method exceeds DesiredMethodLimit") \
- \
- develop(bool, UseCHA, true, \
- "Enable CHA") \
- \
- product(bool, UseTypeProfile, true, \
- "Check interpreter profile for historically monomorphic calls") \
- \
- diagnostic(bool, PrintInlining, false, \
- "Print inlining optimizations") \
- \
- product(bool, UsePopCountInstruction, false, \
- "Use population count instruction") \
- \
- develop(bool, EagerInitialization, false, \
- "Eagerly initialize classes if possible") \
- \
- diagnostic(bool, LogTouchedMethods, false, \
- "Log methods which have been ever touched in runtime") \
- \
- diagnostic(bool, PrintTouchedMethodsAtExit, false, \
- "Print all methods that have been ever touched in runtime") \
- \
- develop(bool, TraceMethodReplacement, false, \
- "Print when methods are replaced do to recompilation") \
- \
- develop(bool, PrintMethodFlushing, false, \
- "Print the nmethods being flushed") \
- \
- diagnostic(bool, PrintMethodFlushingStatistics, false, \
- "print statistics about method flushing") \
- \
- diagnostic(intx, HotMethodDetectionLimit, 100000, \
- "Number of compiled code invocations after which " \
- "the method is considered as hot by the flusher") \
- range(1, max_jint) \
- \
- diagnostic(intx, MinPassesBeforeFlush, 10, \
- "Minimum number of sweeper passes before an nmethod " \
- "can be flushed") \
- range(0, max_intx) \
- \
- product(bool, UseCodeAging, true, \
- "Insert counter to detect warm methods") \
- \
- diagnostic(bool, StressCodeAging, false, \
- "Start with counters compiled in") \
- \
- develop(bool, StressCodeBuffers, false, \
- "Exercise code buffer expansion and other rare state changes") \
- \
- diagnostic(bool, DebugNonSafepoints, trueInDebug, \
- "Generate extra debugging information for non-safepoints in " \
- "nmethods") \
- \
- product(bool, PrintVMOptions, false, \
- "Print flags that appeared on the command line") \
- \
- product(bool, IgnoreUnrecognizedVMOptions, false, \
- "Ignore unrecognized VM options") \
- \
- product(bool, PrintCommandLineFlags, false, \
- "Print flags specified on command line or set by ergonomics") \
- \
- product(bool, PrintFlagsInitial, false, \
- "Print all VM flags before argument processing and exit VM") \
- \
- product(bool, PrintFlagsFinal, false, \
- "Print all VM flags after argument and ergonomic processing") \
- \
- notproduct(bool, PrintFlagsWithComments, false, \
- "Print all VM flags with default values and descriptions and " \
- "exit") \
- \
- product(bool, PrintFlagsRanges, false, \
- "Print VM flags and their ranges") \
- \
- diagnostic(bool, SerializeVMOutput, true, \
- "Use a mutex to serialize output to tty and LogFile") \
- \
- diagnostic(bool, DisplayVMOutput, true, \
- "Display all VM output on the tty, independently of LogVMOutput") \
- \
- diagnostic(bool, LogVMOutput, false, \
- "Save VM output to LogFile") \
- \
- diagnostic(ccstr, LogFile, NULL, \
- "If LogVMOutput or LogCompilation is on, save VM output to " \
- "this file [default: ./hotspot_pid%p.log] (%p replaced with pid)")\
- \
- product(ccstr, ErrorFile, NULL, \
- "If an error occurs, save the error data to this file " \
- "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \
- \
- product(bool, ExtensiveErrorReports, \
- PRODUCT_ONLY(false) NOT_PRODUCT(true), \
- "Error reports are more extensive.") \
- \
- product(bool, DisplayVMOutputToStderr, false, \
- "If DisplayVMOutput is true, display all VM output to stderr") \
- \
- product(bool, DisplayVMOutputToStdout, false, \
- "If DisplayVMOutput is true, display all VM output to stdout") \
- \
- product(bool, ErrorFileToStderr, false, \
- "If true, error data is printed to stderr instead of a file") \
- \
- product(bool, ErrorFileToStdout, false, \
- "If true, error data is printed to stdout instead of a file") \
- \
- product(bool, UseHeavyMonitors, false, \
- "use heavyweight instead of lightweight Java monitors") \
- \
- product(bool, PrintStringTableStatistics, false, \
- "print statistics about the StringTable and SymbolTable") \
- \
- diagnostic(bool, VerifyStringTableAtExit, false, \
- "verify StringTable contents at exit") \
- \
- notproduct(bool, PrintSymbolTableSizeHistogram, false, \
- "print histogram of the symbol table") \
- \
- notproduct(bool, ExitVMOnVerifyError, false, \
- "standard exit from VM if bytecode verify error " \
- "(only in debug mode)") \
- \
- diagnostic(ccstr, AbortVMOnException, NULL, \
- "Call fatal if this exception is thrown. Example: " \
- "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \
- \
- diagnostic(ccstr, AbortVMOnExceptionMessage, NULL, \
- "Call fatal if the exception pointed by AbortVMOnException " \
- "has this message") \
- \
- develop(bool, DebugVtables, false, \
- "add debugging code to vtable dispatch") \
- \
- notproduct(bool, PrintVtableStats, false, \
- "print vtables stats at end of run") \
- \
- develop(bool, TraceCreateZombies, false, \
- "trace creation of zombie nmethods") \
- \
- product(bool, RangeCheckElimination, true, \
- "Eliminate range checks") \
- \
- develop_pd(bool, UncommonNullCast, \
- "track occurrences of null in casts; adjust compiler tactics") \
- \
- develop(bool, TypeProfileCasts, true, \
- "treat casts like calls for purposes of type profiling") \
- \
- develop(bool, TraceLivenessGen, false, \
- "Trace the generation of liveness analysis information") \
- \
- notproduct(bool, TraceLivenessQuery, false, \
- "Trace queries of liveness analysis information") \
- \
- notproduct(bool, CollectIndexSetStatistics, false, \
- "Collect information about IndexSets") \
- \
- develop(bool, UseLoopSafepoints, true, \
- "Generate Safepoint nodes in every loop") \
- \
- develop(intx, FastAllocateSizeLimit, 128*K, \
- /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \
- "Inline allocations larger than this in doublewords must go slow")\
- \
- product_pd(bool, CompactStrings, \
- "Enable Strings to use single byte chars in backing store") \
- \
- product_pd(uintx, TypeProfileLevel, \
- "=XYZ, with Z: Type profiling of arguments at call; " \
- "Y: Type profiling of return value at call; " \
- "X: Type profiling of parameters to methods; " \
- "X, Y and Z in 0=off ; 1=jsr292 only; 2=all methods") \
- constraint(TypeProfileLevelConstraintFunc, AfterErgo) \
- \
- product(intx, TypeProfileArgsLimit, 2, \
- "max number of call arguments to consider for type profiling") \
- range(0, 16) \
- \
- product(intx, TypeProfileParmsLimit, 2, \
- "max number of incoming parameters to consider for type profiling"\
- ", -1 for all") \
- range(-1, 64) \
- \
- /* statistics */ \
- develop(bool, CountCompiledCalls, false, \
- "Count method invocations") \
- \
- notproduct(bool, CountRuntimeCalls, false, \
- "Count VM runtime calls") \
- \
- develop(bool, CountJNICalls, false, \
- "Count jni method invocations") \
- \
- notproduct(bool, CountJVMCalls, false, \
- "Count jvm method invocations") \
- \
- notproduct(bool, CountRemovableExceptions, false, \
- "Count exceptions that could be replaced by branches due to " \
- "inlining") \
- \
- notproduct(bool, ICMissHistogram, false, \
- "Produce histogram of IC misses") \
- \
- /* interpreter */ \
- product_pd(bool, RewriteBytecodes, \
- "Allow rewriting of bytecodes (bytecodes are not immutable)") \
- \
- product_pd(bool, RewriteFrequentPairs, \
- "Rewrite frequently used bytecode pairs into a single bytecode") \
- \
- diagnostic(bool, PrintInterpreter, false, \
- "Print the generated interpreter code") \
- \
- product(bool, UseInterpreter, true, \
- "Use interpreter for non-compiled methods") \
- \
- develop(bool, UseFastSignatureHandlers, true, \
- "Use fast signature handlers for native calls") \
- \
- product(bool, UseLoopCounter, true, \
- "Increment invocation counter on backward branch") \
- \
- product_pd(bool, UseOnStackReplacement, \
- "Use on stack replacement, calls runtime if invoc. counter " \
- "overflows in loop") \
- \
- notproduct(bool, TraceOnStackReplacement, false, \
- "Trace on stack replacement") \
- \
- product_pd(bool, PreferInterpreterNativeStubs, \
- "Use always interpreter stubs for native methods invoked via " \
- "interpreter") \
- \
- develop(bool, CountBytecodes, false, \
- "Count number of bytecodes executed") \
- \
- develop(bool, PrintBytecodeHistogram, false, \
- "Print histogram of the executed bytecodes") \
- \
- develop(bool, PrintBytecodePairHistogram, false, \
- "Print histogram of the executed bytecode pairs") \
- \
- diagnostic(bool, PrintSignatureHandlers, false, \
- "Print code generated for native method signature handlers") \
- \
- develop(bool, VerifyOops, false, \
- "Do plausibility checks for oops") \
- \
- develop(bool, CheckUnhandledOops, false, \
- "Check for unhandled oops in VM code") \
- \
- develop(bool, VerifyJNIFields, trueInDebug, \
- "Verify jfieldIDs for instance fields") \
- \
- notproduct(bool, VerifyJNIEnvThread, false, \
- "Verify JNIEnv.thread == Thread::current() when entering VM " \
- "from JNI") \
- \
- develop(bool, VerifyFPU, false, \
- "Verify FPU state (check for NaN's, etc.)") \
- \
- develop(bool, VerifyThread, false, \
- "Watch the thread register for corruption (SPARC only)") \
- \
- develop(bool, VerifyActivationFrameSize, false, \
- "Verify that activation frame didn't become smaller than its " \
- "minimal size") \
- \
- develop(bool, TraceFrequencyInlining, false, \
- "Trace frequency based inlining") \
- \
- develop_pd(bool, InlineIntrinsics, \
- "Inline intrinsics that can be statically resolved") \
- \
- product_pd(bool, ProfileInterpreter, \
- "Profile at the bytecode level during interpretation") \
- \
- develop(bool, TraceProfileInterpreter, false, \
- "Trace profiling at the bytecode level during interpretation. " \
- "This outputs the profiling information collected to improve " \
- "jit compilation.") \
- \
- develop_pd(bool, ProfileTraps, \
- "Profile deoptimization traps at the bytecode level") \
- \
- product(intx, ProfileMaturityPercentage, 20, \
- "number of method invocations/branches (expressed as % of " \
- "CompileThreshold) before using the method's profile") \
- range(0, 100) \
- \
- diagnostic(bool, PrintMethodData, false, \
- "Print the results of +ProfileInterpreter at end of run") \
- \
- develop(bool, VerifyDataPointer, trueInDebug, \
- "Verify the method data pointer during interpreter profiling") \
- \
- develop(bool, VerifyCompiledCode, false, \
- "Include miscellaneous runtime verifications in nmethod code; " \
- "default off because it disturbs nmethod size heuristics") \
- \
- notproduct(bool, CrashGCForDumpingJavaThread, false, \
- "Manually make GC thread crash then dump java stack trace; " \
- "Test only") \
- \
- /* compilation */ \
- product(bool, UseCompiler, true, \
- "Use Just-In-Time compilation") \
- \
- product(bool, UseCounterDecay, true, \
- "Adjust recompilation counters") \
- \
- develop(intx, CounterHalfLifeTime, 30, \
- "Half-life time of invocation counters (in seconds)") \
- \
- develop(intx, CounterDecayMinIntervalLength, 500, \
- "The minimum interval (in milliseconds) between invocation of " \
- "CounterDecay") \
- \
- product(bool, AlwaysCompileLoopMethods, false, \
- "When using recompilation, never interpret methods " \
- "containing loops") \
- \
- product(bool, DontCompileHugeMethods, true, \
- "Do not compile methods > HugeMethodLimit") \
- \
- /* Bytecode escape analysis estimation. */ \
- product(bool, EstimateArgEscape, true, \
- "Analyze bytecodes to estimate escape state of arguments") \
- \
- product(intx, BCEATraceLevel, 0, \
- "How much tracing to do of bytecode escape analysis estimates " \
- "(0-3)") \
- range(0, 3) \
- \
- product(intx, MaxBCEAEstimateLevel, 5, \
- "Maximum number of nested calls that are analyzed by BC EA") \
- range(0, max_jint) \
- \
- product(intx, MaxBCEAEstimateSize, 150, \
- "Maximum bytecode size of a method to be analyzed by BC EA") \
- range(0, max_jint) \
- \
- product(intx, AllocatePrefetchStyle, 1, \
- "0 = no prefetch, " \
- "1 = generate prefetch instructions for each allocation, " \
- "2 = use TLAB watermark to gate allocation prefetch, " \
- "3 = generate one prefetch instruction per cache line") \
- range(0, 3) \
- \
- product(intx, AllocatePrefetchDistance, -1, \
- "Distance to prefetch ahead of allocation pointer. " \
- "-1: use system-specific value (automatically determined") \
- constraint(AllocatePrefetchDistanceConstraintFunc,AfterMemoryInit)\
- \
- product(intx, AllocatePrefetchLines, 3, \
- "Number of lines to prefetch ahead of array allocation pointer") \
- range(1, 64) \
- \
- product(intx, AllocateInstancePrefetchLines, 1, \
- "Number of lines to prefetch ahead of instance allocation " \
- "pointer") \
- range(1, 64) \
- \
- product(intx, AllocatePrefetchStepSize, 16, \
- "Step size in bytes of sequential prefetch instructions") \
- range(1, 512) \
- constraint(AllocatePrefetchStepSizeConstraintFunc,AfterMemoryInit)\
- \
- product(intx, AllocatePrefetchInstr, 0, \
- "Select instruction to prefetch ahead of allocation pointer") \
- constraint(AllocatePrefetchInstrConstraintFunc, AfterMemoryInit) \
- \
- /* deoptimization */ \
- develop(bool, TraceDeoptimization, false, \
- "Trace deoptimization") \
- \
- develop(bool, PrintDeoptimizationDetails, false, \
- "Print more information about deoptimization") \
- \
- develop(bool, DebugDeoptimization, false, \
- "Tracing various information while debugging deoptimization") \
- \
- product(intx, SelfDestructTimer, 0, \
- "Will cause VM to terminate after a given time (in minutes) " \
- "(0 means off)") \
- range(0, max_intx) \
- \
- product(intx, MaxJavaStackTraceDepth, 1024, \
- "The maximum number of lines in the stack trace for Java " \
- "exceptions (0 means all)") \
- range(0, max_jint/2) \
- \
- /* notice: the max range value here is max_jint, not max_intx */ \
- /* because of overflow issue */ \
- diagnostic(intx, GuaranteedSafepointInterval, 1000, \
- "Guarantee a safepoint (at least) every so many milliseconds " \
- "(0 means none)") \
- range(0, max_jint) \
- \
- product(intx, SafepointTimeoutDelay, 10000, \
- "Delay in milliseconds for option SafepointTimeout") \
- LP64_ONLY(range(0, max_intx/MICROUNITS)) \
- NOT_LP64(range(0, max_intx)) \
- \
- product(intx, NmethodSweepActivity, 10, \
- "Removes cold nmethods from code cache if > 0. Higher values " \
- "result in more aggressive sweeping") \
- range(0, 2000) \
- \
- notproduct(bool, LogSweeper, false, \
- "Keep a ring buffer of sweeper activity") \
- \
- notproduct(intx, SweeperLogEntries, 1024, \
- "Number of records in the ring buffer of sweeper activity") \
- \
- notproduct(intx, MemProfilingInterval, 500, \
- "Time between each invocation of the MemProfiler") \
- \
- develop(intx, MallocCatchPtr, -1, \
- "Hit breakpoint when mallocing/freeing this pointer") \
- \
- notproduct(ccstrlist, SuppressErrorAt, "", \
- "List of assertions (file:line) to muzzle") \
- \
- develop(intx, StackPrintLimit, 100, \
- "number of stack frames to print in VM-level stack dump") \
- \
- notproduct(intx, MaxElementPrintSize, 256, \
- "maximum number of elements to print") \
- \
- notproduct(intx, MaxSubklassPrintSize, 4, \
- "maximum number of subklasses to print when printing klass") \
- \
- product(intx, MaxInlineLevel, 15, \
- "maximum number of nested calls that are inlined") \
- range(0, max_jint) \
- \
- product(intx, MaxRecursiveInlineLevel, 1, \
- "maximum number of nested recursive calls that are inlined") \
- range(0, max_jint) \
- \
- develop(intx, MaxForceInlineLevel, 100, \
- "maximum number of nested calls that are forced for inlining " \
- "(using CompileCommand or marked w/ @ForceInline)") \
- range(0, max_jint) \
- \
- product_pd(intx, InlineSmallCode, \
- "Only inline already compiled methods if their code size is " \
- "less than this") \
- range(0, max_jint) \
- \
- product(intx, MaxInlineSize, 35, \
- "The maximum bytecode size of a method to be inlined") \
- range(0, max_jint) \
- \
- product_pd(intx, FreqInlineSize, \
- "The maximum bytecode size of a frequent method to be inlined") \
- range(0, max_jint) \
- \
- product(intx, MaxTrivialSize, 6, \
- "The maximum bytecode size of a trivial method to be inlined") \
- range(0, max_jint) \
- \
- product(intx, MinInliningThreshold, 250, \
- "The minimum invocation count a method needs to have to be " \
- "inlined") \
- range(0, max_jint) \
- \
- develop(intx, MethodHistogramCutoff, 100, \
- "The cutoff value for method invocation histogram (+CountCalls)") \
- \
- develop(intx, DontYieldALotInterval, 10, \
- "Interval between which yields will be dropped (milliseconds)") \
- \
- notproduct(intx, DeoptimizeALotInterval, 5, \
- "Number of exits until DeoptimizeALot kicks in") \
- \
- notproduct(intx, ZombieALotInterval, 5, \
- "Number of exits until ZombieALot kicks in") \
- \
- diagnostic(uintx, MallocMaxTestWords, 0, \
- "If non-zero, maximum number of words that malloc/realloc can " \
- "allocate (for testing only)") \
- range(0, max_uintx) \
- \
- product(intx, TypeProfileWidth, 2, \
- "Number of receiver types to record in call/cast profile") \
- range(0, 8) \
- \
- develop(intx, BciProfileWidth, 2, \
- "Number of return bci's to record in ret profile") \
- \
- product(intx, PerMethodRecompilationCutoff, 400, \
- "After recompiling N times, stay in the interpreter (-1=>'Inf')") \
- range(-1, max_intx) \
- \
- product(intx, PerBytecodeRecompilationCutoff, 200, \
- "Per-BCI limit on repeated recompilation (-1=>'Inf')") \
- range(-1, max_intx) \
- \
- product(intx, PerMethodTrapLimit, 100, \
- "Limit on traps (of one kind) in a method (includes inlines)") \
- range(0, max_jint) \
- \
- experimental(intx, PerMethodSpecTrapLimit, 5000, \
- "Limit on speculative traps (of one kind) in a method " \
- "(includes inlines)") \
- range(0, max_jint) \
- \
- product(intx, PerBytecodeTrapLimit, 4, \
- "Limit on traps (of one kind) at a particular BCI") \
- range(0, max_jint) \
- \
- experimental(intx, SpecTrapLimitExtraEntries, 3, \
- "Extra method data trap entries for speculation") \
- \
- develop(intx, InlineFrequencyRatio, 20, \
- "Ratio of call site execution to caller method invocation") \
- range(0, max_jint) \
- \
- diagnostic_pd(intx, InlineFrequencyCount, \
- "Count of call site execution necessary to trigger frequent " \
- "inlining") \
- range(0, max_jint) \
- \
- develop(intx, InlineThrowCount, 50, \
- "Force inlining of interpreted methods that throw this often") \
- range(0, max_jint) \
- \
- develop(intx, InlineThrowMaxSize, 200, \
- "Force inlining of throwing methods smaller than this") \
- range(0, max_jint) \
- \
- develop(intx, ProfilerNodeSize, 1024, \
- "Size in K to allocate for the Profile Nodes of each thread") \
- range(0, 1024) \
- \
- product_pd(size_t, MetaspaceSize, \
- "Initial threshold (in bytes) at which a garbage collection " \
- "is done to reduce Metaspace usage") \
- constraint(MetaspaceSizeConstraintFunc,AfterErgo) \
- \
- product(size_t, MaxMetaspaceSize, max_uintx, \
- "Maximum size of Metaspaces (in bytes)") \
- constraint(MaxMetaspaceSizeConstraintFunc,AfterErgo) \
- \
- product(size_t, CompressedClassSpaceSize, 1*G, \
- "Maximum size of class area in Metaspace when compressed " \
- "class pointers are used") \
- range(1*M, 3*G) \
- \
- manageable(uintx, MinHeapFreeRatio, 40, \
- "The minimum percentage of heap free after GC to avoid expansion."\
- " For most GCs this applies to the old generation. In G1 and" \
- " ParallelGC it applies to the whole heap.") \
- range(0, 100) \
- constraint(MinHeapFreeRatioConstraintFunc,AfterErgo) \
- \
- manageable(uintx, MaxHeapFreeRatio, 70, \
- "The maximum percentage of heap free after GC to avoid shrinking."\
- " For most GCs this applies to the old generation. In G1 and" \
- " ParallelGC it applies to the whole heap.") \
- range(0, 100) \
- constraint(MaxHeapFreeRatioConstraintFunc,AfterErgo) \
- \
- product(bool, ShrinkHeapInSteps, true, \
- "When disabled, informs the GC to shrink the java heap directly" \
- " to the target size at the next full GC rather than requiring" \
- " smaller steps during multiple full GCs.") \
- \
- product(intx, SoftRefLRUPolicyMSPerMB, 1000, \
- "Number of milliseconds per MB of free space in the heap") \
- range(0, max_intx) \
- constraint(SoftRefLRUPolicyMSPerMBConstraintFunc,AfterMemoryInit) \
- \
- product(size_t, MinHeapDeltaBytes, ScaleForWordSize(128*K), \
- "The minimum change in heap space due to GC (in bytes)") \
- range(0, max_uintx) \
- \
- product(size_t, MinMetaspaceExpansion, ScaleForWordSize(256*K), \
- "The minimum expansion of Metaspace (in bytes)") \
- range(0, max_uintx) \
- \
- product(uintx, MaxMetaspaceFreeRatio, 70, \
- "The maximum percentage of Metaspace free after GC to avoid " \
- "shrinking") \
- range(0, 100) \
- constraint(MaxMetaspaceFreeRatioConstraintFunc,AfterErgo) \
- \
- product(uintx, MinMetaspaceFreeRatio, 40, \
- "The minimum percentage of Metaspace free after GC to avoid " \
- "expansion") \
- range(0, 99) \
- constraint(MinMetaspaceFreeRatioConstraintFunc,AfterErgo) \
- \
- product(size_t, MaxMetaspaceExpansion, ScaleForWordSize(4*M), \
- "The maximum expansion of Metaspace without full GC (in bytes)") \
- range(0, max_uintx) \
- \
- /* stack parameters */ \
- product_pd(intx, StackYellowPages, \
- "Number of yellow zone (recoverable overflows) pages of size " \
- "4KB. If pages are bigger yellow zone is aligned up.") \
- range(MIN_STACK_YELLOW_PAGES, (DEFAULT_STACK_YELLOW_PAGES+5)) \
- \
- product_pd(intx, StackRedPages, \
- "Number of red zone (unrecoverable overflows) pages of size " \
- "4KB. If pages are bigger red zone is aligned up.") \
- range(MIN_STACK_RED_PAGES, (DEFAULT_STACK_RED_PAGES+2)) \
- \
- product_pd(intx, StackReservedPages, \
- "Number of reserved zone (reserved to annotated methods) pages" \
- " of size 4KB. If pages are bigger reserved zone is aligned up.") \
- range(MIN_STACK_RESERVED_PAGES, (DEFAULT_STACK_RESERVED_PAGES+10))\
- \
- product(bool, RestrictReservedStack, true, \
- "Restrict @ReservedStackAccess to trusted classes") \
- \
- /* greater stack shadow pages can't generate instruction to bang stack */ \
- product_pd(intx, StackShadowPages, \
- "Number of shadow zone (for overflow checking) pages of size " \
- "4KB. If pages are bigger shadow zone is aligned up. " \
- "This should exceed the depth of the VM and native call stack.") \
- range(MIN_STACK_SHADOW_PAGES, (DEFAULT_STACK_SHADOW_PAGES+30)) \
- \
- product_pd(intx, ThreadStackSize, \
- "Thread Stack Size (in Kbytes)") \
- range(0, 1 * M) \
- \
- product_pd(intx, VMThreadStackSize, \
- "Non-Java Thread Stack Size (in Kbytes)") \
- range(0, max_intx/(1 * K)) \
- \
- product_pd(intx, CompilerThreadStackSize, \
- "Compiler Thread Stack Size (in Kbytes)") \
- range(0, max_intx/(1 * K)) \
- \
- develop_pd(size_t, JVMInvokeMethodSlack, \
- "Stack space (bytes) required for JVM_InvokeMethod to complete") \
- \
- /* code cache parameters */ \
- develop_pd(uintx, CodeCacheSegmentSize, \
- "Code cache segment size (in bytes) - smallest unit of " \
- "allocation") \
- range(1, 1024) \
- constraint(CodeCacheSegmentSizeConstraintFunc, AfterErgo) \
- \
- develop_pd(intx, CodeEntryAlignment, \
- "Code entry alignment for generated code (in bytes)") \
- constraint(CodeEntryAlignmentConstraintFunc, AfterErgo) \
- \
- product_pd(intx, OptoLoopAlignment, \
- "Align inner loops to zero relative to this modulus") \
- range(1, 16) \
- constraint(OptoLoopAlignmentConstraintFunc, AfterErgo) \
- \
- product_pd(uintx, InitialCodeCacheSize, \
- "Initial code cache size (in bytes)") \
- range(os::vm_page_size(), max_uintx) \
- \
- develop_pd(uintx, CodeCacheMinimumUseSpace, \
- "Minimum code cache size (in bytes) required to start VM.") \
- range(0, max_uintx) \
- \
- product(bool, SegmentedCodeCache, false, \
- "Use a segmented code cache") \
- \
- product_pd(uintx, ReservedCodeCacheSize, \
- "Reserved code cache size (in bytes) - maximum code cache size") \
- range(os::vm_page_size(), max_uintx) \
- \
- product_pd(uintx, NonProfiledCodeHeapSize, \
- "Size of code heap with non-profiled methods (in bytes)") \
- range(0, max_uintx) \
- \
- product_pd(uintx, ProfiledCodeHeapSize, \
- "Size of code heap with profiled methods (in bytes)") \
- range(0, max_uintx) \
- \
- product_pd(uintx, NonNMethodCodeHeapSize, \
- "Size of code heap with non-nmethods (in bytes)") \
- range(os::vm_page_size(), max_uintx) \
- \
- product_pd(uintx, CodeCacheExpansionSize, \
- "Code cache expansion size (in bytes)") \
- range(32*K, max_uintx) \
- \
- diagnostic_pd(uintx, CodeCacheMinBlockLength, \
- "Minimum number of segments in a code cache block") \
- range(1, 100) \
- \
- notproduct(bool, ExitOnFullCodeCache, false, \
- "Exit the VM if we fill the code cache") \
- \
- product(bool, UseCodeCacheFlushing, true, \
- "Remove cold/old nmethods from the code cache") \
- \
- product(uintx, StartAggressiveSweepingAt, 10, \
- "Start aggressive sweeping if X[%] of the code cache is free." \
- "Segmented code cache: X[%] of the non-profiled heap." \
- "Non-segmented code cache: X[%] of the total code cache") \
- range(0, 100) \
- \
- /* AOT parameters */ \
- experimental(bool, UseAOT, false, \
- "Use AOT compiled files") \
- \
- experimental(ccstrlist, AOTLibrary, NULL, \
- "AOT library") \
- \
- experimental(bool, PrintAOT, false, \
- "Print used AOT klasses and methods") \
- \
- notproduct(bool, PrintAOTStatistics, false, \
- "Print AOT statistics") \
- \
- diagnostic(bool, UseAOTStrictLoading, false, \
- "Exit the VM if any of the AOT libraries has invalid config") \
- \
- product(bool, CalculateClassFingerprint, false, \
- "Calculate class fingerprint") \
- \
- /* interpreter debugging */ \
- develop(intx, BinarySwitchThreshold, 5, \
- "Minimal number of lookupswitch entries for rewriting to binary " \
- "switch") \
- \
- develop(intx, StopInterpreterAt, 0, \
- "Stop interpreter execution at specified bytecode number") \
- \
- develop(intx, TraceBytecodesAt, 0, \
- "Trace bytecodes starting with specified bytecode number") \
- \
- /* compiler interface */ \
- develop(intx, CIStart, 0, \
- "The id of the first compilation to permit") \
- \
- develop(intx, CIStop, max_jint, \
- "The id of the last compilation to permit") \
- \
- develop(intx, CIStartOSR, 0, \
- "The id of the first osr compilation to permit " \
- "(CICountOSR must be on)") \
- \
- develop(intx, CIStopOSR, max_jint, \
- "The id of the last osr compilation to permit " \
- "(CICountOSR must be on)") \
- \
- develop(intx, CIBreakAtOSR, -1, \
- "The id of osr compilation to break at") \
- \
- develop(intx, CIBreakAt, -1, \
- "The id of compilation to break at") \
- \
- product(ccstrlist, CompileOnly, "", \
- "List of methods (pkg/class.name) to restrict compilation to") \
- \
- product(ccstr, CompileCommandFile, NULL, \
- "Read compiler commands from this file [.hotspot_compiler]") \
- \
- diagnostic(ccstr, CompilerDirectivesFile, NULL, \
- "Read compiler directives from this file") \
- \
- product(ccstrlist, CompileCommand, "", \
- "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \
- \
- develop(bool, ReplayCompiles, false, \
- "Enable replay of compilations from ReplayDataFile") \
- \
- product(ccstr, ReplayDataFile, NULL, \
- "File containing compilation replay information" \
- "[default: ./replay_pid%p.log] (%p replaced with pid)") \
- \
- product(ccstr, InlineDataFile, NULL, \
- "File containing inlining replay information" \
- "[default: ./inline_pid%p.log] (%p replaced with pid)") \
- \
- develop(intx, ReplaySuppressInitializers, 2, \
- "Control handling of class initialization during replay: " \
- "0 - don't do anything special; " \
- "1 - treat all class initializers as empty; " \
- "2 - treat class initializers for application classes as empty; " \
- "3 - allow all class initializers to run during bootstrap but " \
- " pretend they are empty after starting replay") \
- range(0, 3) \
- \
- develop(bool, ReplayIgnoreInitErrors, false, \
- "Ignore exceptions thrown during initialization for replay") \
- \
- product(bool, DumpReplayDataOnError, true, \
- "Record replay data for crashing compiler threads") \
- \
- product(bool, CICompilerCountPerCPU, false, \
- "1 compiler thread for log(N CPUs)") \
- \
- notproduct(intx, CICrashAt, -1, \
- "id of compilation to trigger assert in compiler thread for " \
- "the purpose of testing, e.g. generation of replay data") \
- notproduct(bool, CIObjectFactoryVerify, false, \
- "enable potentially expensive verification in ciObjectFactory") \
- \
- diagnostic(bool, AbortVMOnCompilationFailure, false, \
- "Abort VM when method had failed to compile.") \
- \
- /* Priorities */ \
- product_pd(bool, UseThreadPriorities, "Use native thread priorities") \
- \
- product(intx, ThreadPriorityPolicy, 0, \
- "0 : Normal. "\
- " VM chooses priorities that are appropriate for normal "\
- " applications. On Solaris NORM_PRIORITY and above are mapped "\
- " to normal native priority. Java priorities below " \
- " NORM_PRIORITY map to lower native priority values. On "\
- " Windows applications are allowed to use higher native "\
- " priorities. However, with ThreadPriorityPolicy=0, VM will "\
- " not use the highest possible native priority, "\
- " THREAD_PRIORITY_TIME_CRITICAL, as it may interfere with "\
- " system threads. On Linux thread priorities are ignored "\
- " because the OS does not support static priority in "\
- " SCHED_OTHER scheduling class which is the only choice for "\
- " non-root, non-realtime applications. "\
- "1 : Aggressive. "\
- " Java thread priorities map over to the entire range of "\
- " native thread priorities. Higher Java thread priorities map "\
- " to higher native thread priorities. This policy should be "\
- " used with care, as sometimes it can cause performance "\
- " degradation in the application and/or the entire system. On "\
- " Linux/BSD/macOS this policy requires root privilege or an "\
- " extended capability.") \
- range(0, 1) \
- \
- product(bool, ThreadPriorityVerbose, false, \
- "Print priority changes") \
- \
- product(intx, CompilerThreadPriority, -1, \
- "The native priority at which compiler threads should run " \
- "(-1 means no change)") \
- range(min_jint, max_jint) \
- constraint(CompilerThreadPriorityConstraintFunc, AfterErgo) \
- \
- product(intx, VMThreadPriority, -1, \
- "The native priority at which the VM thread should run " \
- "(-1 means no change)") \
- range(-1, 127) \
- \
- product(intx, JavaPriority1_To_OSPriority, -1, \
- "Map Java priorities to OS priorities") \
- range(-1, 127) \
- \
- product(intx, JavaPriority2_To_OSPriority, -1, \
- "Map Java priorities to OS priorities") \
- range(-1, 127) \
- \
- product(intx, JavaPriority3_To_OSPriority, -1, \
- "Map Java priorities to OS priorities") \
- range(-1, 127) \
- \
- product(intx, JavaPriority4_To_OSPriority, -1, \
- "Map Java priorities to OS priorities") \
- range(-1, 127) \
- \
- product(intx, JavaPriority5_To_OSPriority, -1, \
- "Map Java priorities to OS priorities") \
- range(-1, 127) \
- \
- product(intx, JavaPriority6_To_OSPriority, -1, \
- "Map Java priorities to OS priorities") \
- range(-1, 127) \
- \
- product(intx, JavaPriority7_To_OSPriority, -1, \
- "Map Java priorities to OS priorities") \
- range(-1, 127) \
- \
- product(intx, JavaPriority8_To_OSPriority, -1, \
- "Map Java priorities to OS priorities") \
- range(-1, 127) \
- \
- product(intx, JavaPriority9_To_OSPriority, -1, \
- "Map Java priorities to OS priorities") \
- range(-1, 127) \
- \
- product(intx, JavaPriority10_To_OSPriority,-1, \
- "Map Java priorities to OS priorities") \
- range(-1, 127) \
- \
- experimental(bool, UseCriticalJavaThreadPriority, false, \
- "Java thread priority 10 maps to critical scheduling priority") \
- \
- experimental(bool, UseCriticalCompilerThreadPriority, false, \
- "Compiler thread(s) run at critical scheduling priority") \
- \
- develop(intx, NewCodeParameter, 0, \
- "Testing Only: Create a dedicated integer parameter before " \
- "putback") \
- \
- /* new oopmap storage allocation */ \
- develop(intx, MinOopMapAllocation, 8, \
- "Minimum number of OopMap entries in an OopMapSet") \
- \
- /* Background Compilation */ \
- develop(intx, LongCompileThreshold, 50, \
- "Used with +TraceLongCompiles") \
- \
- /* recompilation */ \
- product_pd(intx, CompileThreshold, \
- "number of interpreted method invocations before (re-)compiling") \
- constraint(CompileThresholdConstraintFunc, AfterErgo) \
- \
- product(double, CompileThresholdScaling, 1.0, \
- "Factor to control when first compilation happens " \
- "(both with and without tiered compilation): " \
- "values greater than 1.0 delay counter overflow, " \
- "values between 0 and 1.0 rush counter overflow, " \
- "value of 1.0 leaves compilation thresholds unchanged " \
- "value of 0.0 is equivalent to -Xint. " \
- "" \
- "Flag can be set as per-method option. " \
- "If a value is specified for a method, compilation thresholds " \
- "for that method are scaled by both the value of the global flag "\
- "and the value of the per-method flag.") \
- range(0.0, DBL_MAX) \
- \
- product(intx, Tier0InvokeNotifyFreqLog, 7, \
- "Interpreter (tier 0) invocation notification frequency") \
- range(0, 30) \
- \
- product(intx, Tier2InvokeNotifyFreqLog, 11, \
- "C1 without MDO (tier 2) invocation notification frequency") \
- range(0, 30) \
- \
- product(intx, Tier3InvokeNotifyFreqLog, 10, \
- "C1 with MDO profiling (tier 3) invocation notification " \
- "frequency") \
- range(0, 30) \
- \
- product(intx, Tier23InlineeNotifyFreqLog, 20, \
- "Inlinee invocation (tiers 2 and 3) notification frequency") \
- range(0, 30) \
- \
- product(intx, Tier0BackedgeNotifyFreqLog, 10, \
- "Interpreter (tier 0) invocation notification frequency") \
- range(0, 30) \
- \
- product(intx, Tier2BackedgeNotifyFreqLog, 14, \
- "C1 without MDO (tier 2) invocation notification frequency") \
- range(0, 30) \
- \
- product(intx, Tier3BackedgeNotifyFreqLog, 13, \
- "C1 with MDO profiling (tier 3) invocation notification " \
- "frequency") \
- range(0, 30) \
- \
- product(intx, Tier2CompileThreshold, 0, \
- "threshold at which tier 2 compilation is invoked") \
- range(0, max_jint) \
- \
- product(intx, Tier2BackEdgeThreshold, 0, \
- "Back edge threshold at which tier 2 compilation is invoked") \
- range(0, max_jint) \
- \
- product(intx, Tier3InvocationThreshold, 200, \
- "Compile if number of method invocations crosses this " \
- "threshold") \
- range(0, max_jint) \
- \
- product(intx, Tier3MinInvocationThreshold, 100, \
- "Minimum invocation to compile at tier 3") \
- range(0, max_jint) \
- \
- product(intx, Tier3CompileThreshold, 2000, \
- "Threshold at which tier 3 compilation is invoked (invocation " \
- "minimum must be satisfied)") \
- range(0, max_jint) \
- \
- product(intx, Tier3BackEdgeThreshold, 60000, \
- "Back edge threshold at which tier 3 OSR compilation is invoked") \
- range(0, max_jint) \
- \
- product(intx, Tier3AOTInvocationThreshold, 10000, \
- "Compile if number of method invocations crosses this " \
- "threshold if coming from AOT") \
- range(0, max_jint) \
- \
- product(intx, Tier3AOTMinInvocationThreshold, 1000, \
- "Minimum invocation to compile at tier 3 if coming from AOT") \
- range(0, max_jint) \
- \
- product(intx, Tier3AOTCompileThreshold, 15000, \
- "Threshold at which tier 3 compilation is invoked (invocation " \
- "minimum must be satisfied) if coming from AOT") \
- range(0, max_jint) \
- \
- product(intx, Tier3AOTBackEdgeThreshold, 120000, \
- "Back edge threshold at which tier 3 OSR compilation is invoked " \
- "if coming from AOT") \
- range(0, max_jint) \
- \
- diagnostic(intx, Tier0AOTInvocationThreshold, 200, \
- "Switch to interpreter to profile if the number of method " \
- "invocations crosses this threshold if coming from AOT " \
- "(applicable only with " \
- "CompilationMode=high-only|high-only-quick-internal)") \
- range(0, max_jint) \
- \
- diagnostic(intx, Tier0AOTMinInvocationThreshold, 100, \
- "Minimum number of invocations to switch to interpreter " \
- "to profile if coming from AOT " \
- "(applicable only with " \
- "CompilationMode=high-only|high-only-quick-internal)") \
- range(0, max_jint) \
- \
- diagnostic(intx, Tier0AOTCompileThreshold, 2000, \
- "Threshold at which to switch to interpreter to profile " \
- "if coming from AOT " \
- "(invocation minimum must be satisfied, " \
- "applicable only with " \
- "CompilationMode=high-only|high-only-quick-internal)") \
- range(0, max_jint) \
- \
- diagnostic(intx, Tier0AOTBackEdgeThreshold, 60000, \
- "Back edge threshold at which to switch to interpreter " \
- "to profile if coming from AOT " \
- "(applicable only with " \
- "CompilationMode=high-only|high-only-quick-internal)") \
- range(0, max_jint) \
- \
- product(intx, Tier4InvocationThreshold, 5000, \
- "Compile if number of method invocations crosses this " \
- "threshold") \
- range(0, max_jint) \
- \
- product(intx, Tier4MinInvocationThreshold, 600, \
- "Minimum invocation to compile at tier 4") \
- range(0, max_jint) \
- \
- product(intx, Tier4CompileThreshold, 15000, \
- "Threshold at which tier 4 compilation is invoked (invocation " \
- "minimum must be satisfied)") \
- range(0, max_jint) \
- \
- product(intx, Tier4BackEdgeThreshold, 40000, \
- "Back edge threshold at which tier 4 OSR compilation is invoked") \
- range(0, max_jint) \
- \
- diagnostic(intx, Tier40InvocationThreshold, 5000, \
- "Compile if number of method invocations crosses this " \
- "threshold (applicable only with " \
- "CompilationMode=high-only|high-only-quick-internal)") \
- range(0, max_jint) \
- \
- diagnostic(intx, Tier40MinInvocationThreshold, 600, \
- "Minimum number of invocations to compile at tier 4 " \
- "(applicable only with " \
- "CompilationMode=high-only|high-only-quick-internal)") \
- range(0, max_jint) \
- \
- diagnostic(intx, Tier40CompileThreshold, 10000, \
- "Threshold at which tier 4 compilation is invoked (invocation " \
- "minimum must be satisfied, applicable only with " \
- "CompilationMode=high-only|high-only-quick-internal)") \
- range(0, max_jint) \
- \
- diagnostic(intx, Tier40BackEdgeThreshold, 15000, \
- "Back edge threshold at which tier 4 OSR compilation is invoked " \
- "(applicable only with " \
- "CompilationMode=high-only|high-only-quick-internal)") \
- range(0, max_jint) \
- \
- diagnostic(intx, Tier0Delay, 5, \
- "If C2 queue size grows over this amount per compiler thread " \
- "do not start profiling in the interpreter " \
- "(applicable only with " \
- "CompilationMode=high-only|high-only-quick-internal)") \
- range(0, max_jint) \
- \
- product(intx, Tier3DelayOn, 5, \
- "If C2 queue size grows over this amount per compiler thread " \
- "stop compiling at tier 3 and start compiling at tier 2") \
- range(0, max_jint) \
- \
- product(intx, Tier3DelayOff, 2, \
- "If C2 queue size is less than this amount per compiler thread " \
- "allow methods compiled at tier 2 transition to tier 3") \
- range(0, max_jint) \
- \
- product(intx, Tier3LoadFeedback, 5, \
- "Tier 3 thresholds will increase twofold when C1 queue size " \
- "reaches this amount per compiler thread") \
- range(0, max_jint) \
- \
- product(intx, Tier4LoadFeedback, 3, \
- "Tier 4 thresholds will increase twofold when C2 queue size " \
- "reaches this amount per compiler thread") \
- range(0, max_jint) \
- \
- product(intx, TieredCompileTaskTimeout, 50, \
- "Kill compile task if method was not used within " \
- "given timeout in milliseconds") \
- range(0, max_intx) \
- \
- product(intx, TieredStopAtLevel, 4, \
- "Stop at given compilation level") \
- range(0, 4) \
- \
- product(intx, Tier0ProfilingStartPercentage, 200, \
- "Start profiling in interpreter if the counters exceed tier 3 " \
- "thresholds (tier 4 thresholds with " \
- "CompilationMode=high-only|high-only-quick-internal)" \
- "by the specified percentage") \
- range(0, max_jint) \
- \
- product(uintx, IncreaseFirstTierCompileThresholdAt, 50, \
- "Increase the compile threshold for C1 compilation if the code " \
- "cache is filled by the specified percentage") \
- range(0, 99) \
- \
- product(intx, TieredRateUpdateMinTime, 1, \
- "Minimum rate sampling interval (in milliseconds)") \
- range(0, max_intx) \
- \
- product(intx, TieredRateUpdateMaxTime, 25, \
- "Maximum rate sampling interval (in milliseconds)") \
- range(0, max_intx) \
- \
- product(ccstr, CompilationMode, "default", \
- "Compilation modes: " \
- "default: normal tiered compilation; " \
- "quick-only: C1-only mode; " \
- "high-only: C2/JVMCI-only mode; " \
- "high-only-quick-internal: C2/JVMCI-only mode, " \
- "with JVMCI compiler compiled with C1.") \
- \
- product_pd(bool, TieredCompilation, \
- "Enable tiered compilation") \
- \
- product(bool, PrintTieredEvents, false, \
- "Print tiered events notifications") \
- \
- product_pd(intx, OnStackReplacePercentage, \
- "NON_TIERED number of method invocations/branches (expressed as " \
- "% of CompileThreshold) before (re-)compiling OSR code") \
- constraint(OnStackReplacePercentageConstraintFunc, AfterErgo) \
- \
- product(intx, InterpreterProfilePercentage, 33, \
- "NON_TIERED number of method invocations/branches (expressed as " \
- "% of CompileThreshold) before profiling in the interpreter") \
- range(0, 100) \
- \
- develop(intx, DesiredMethodLimit, 8000, \
- "The desired maximum method size (in bytecodes) after inlining") \
- \
- develop(intx, HugeMethodLimit, 8000, \
- "Don't compile methods larger than this if " \
- "+DontCompileHugeMethods") \
- \
- /* Properties for Java libraries */ \
- \
- product(uint64_t, MaxDirectMemorySize, 0, \
- "Maximum total size of NIO direct-buffer allocations") \
- range(0, max_jlong) \
- \
- /* Flags used for temporary code during development */ \
- \
- diagnostic(bool, UseNewCode, false, \
- "Testing Only: Use the new version while testing") \
- \
- diagnostic(bool, UseNewCode2, false, \
- "Testing Only: Use the new version while testing") \
- \
- diagnostic(bool, UseNewCode3, false, \
- "Testing Only: Use the new version while testing") \
- \
- /* flags for performance data collection */ \
- \
- product(bool, UsePerfData, true, \
- "Flag to disable jvmstat instrumentation for performance testing "\
- "and problem isolation purposes") \
- \
- product(bool, PerfDataSaveToFile, false, \
- "Save PerfData memory to hsperfdata_<pid> file on exit") \
- \
- product(ccstr, PerfDataSaveFile, NULL, \
- "Save PerfData memory to the specified absolute pathname. " \
- "The string %p in the file name (if present) " \
- "will be replaced by pid") \
- \
- product(intx, PerfDataSamplingInterval, 50, \
- "Data sampling interval (in milliseconds)") \
- range(PeriodicTask::min_interval, max_jint) \
- constraint(PerfDataSamplingIntervalFunc, AfterErgo) \
- \
- product(bool, PerfDisableSharedMem, false, \
- "Store performance data in standard memory") \
- \
- product(intx, PerfDataMemorySize, 32*K, \
- "Size of performance data memory region. Will be rounded " \
- "up to a multiple of the native os page size.") \
- range(128, 32*64*K) \
- \
- product(intx, PerfMaxStringConstLength, 1024, \
- "Maximum PerfStringConstant string length before truncation") \
- range(32, 32*K) \
- \
- product(bool, PerfAllowAtExitRegistration, false, \
- "Allow registration of atexit() methods") \
- \
- product(bool, PerfBypassFileSystemCheck, false, \
- "Bypass Win32 file system criteria checks (Windows Only)") \
- \
- product(intx, UnguardOnExecutionViolation, 0, \
- "Unguard page and retry on no-execute fault (Win32 only) " \
- "0=off, 1=conservative, 2=aggressive") \
- range(0, 2) \
- \
- /* Serviceability Support */ \
- \
- product(bool, ManagementServer, false, \
- "Create JMX Management Server") \
- \
- product(bool, DisableAttachMechanism, false, \
- "Disable mechanism that allows tools to attach to this VM") \
- \
- product(bool, StartAttachListener, false, \
- "Always start Attach Listener at VM startup") \
- \
- product(bool, EnableDynamicAgentLoading, true, \
- "Allow tools to load agents with the attach mechanism") \
- \
- manageable(bool, PrintConcurrentLocks, false, \
- "Print java.util.concurrent locks in thread dump") \
- \
- /* Shared spaces */ \
- \
- product(bool, UseSharedSpaces, true, \
- "Use shared spaces for metadata") \
- \
- product(bool, VerifySharedSpaces, false, \
- "Verify integrity of shared spaces") \
- \
- product(bool, RequireSharedSpaces, false, \
- "Require shared spaces for metadata") \
- \
- product(bool, DumpSharedSpaces, false, \
- "Special mode: JVM reads a class list, loads classes, builds " \
- "shared spaces, and dumps the shared spaces to a file to be " \
- "used in future JVM runs") \
- \
- product(bool, DynamicDumpSharedSpaces, false, \
- "Dynamic archive") \
- \
- product(bool, PrintSharedArchiveAndExit, false, \
- "Print shared archive file contents") \
- \
- product(bool, PrintSharedDictionary, false, \
- "If PrintSharedArchiveAndExit is true, also print the shared " \
- "dictionary") \
- \
- product(size_t, SharedBaseAddress, LP64_ONLY(32*G) \
- NOT_LP64(LINUX_ONLY(2*G) NOT_LINUX(0)), \
- "Address to allocate shared memory region for class data") \
- range(0, SIZE_MAX) \
- \
- product(ccstr, SharedArchiveConfigFile, NULL, \
- "Data to add to the CDS archive file") \
- \
- product(uintx, SharedSymbolTableBucketSize, 4, \
- "Average number of symbols per bucket in shared table") \
- range(2, 246) \
- \
- diagnostic(bool, AllowArchivingWithJavaAgent, false, \
- "Allow Java agent to be run with CDS dumping") \
- \
- diagnostic(bool, PrintMethodHandleStubs, false, \
- "Print generated stub code for method handles") \
- \
- develop(bool, TraceMethodHandles, false, \
- "trace internal method handle operations") \
- \
- diagnostic(bool, VerifyMethodHandles, trueInDebug, \
- "perform extra checks when constructing method handles") \
- \
- diagnostic(bool, ShowHiddenFrames, false, \
- "show method handle implementation frames (usually hidden)") \
- \
- experimental(bool, TrustFinalNonStaticFields, false, \
- "trust final non-static declarations for constant folding") \
- \
- diagnostic(bool, FoldStableValues, true, \
- "Optimize loads from stable fields (marked w/ @Stable)") \
- \
- develop(bool, TraceInvokeDynamic, false, \
- "trace internal invoke dynamic operations") \
- \
- diagnostic(int, UseBootstrapCallInfo, 1, \
- "0: when resolving InDy or ConDy, force all BSM arguments to be " \
- "resolved before the bootstrap method is called; 1: when a BSM " \
- "that may accept a BootstrapCallInfo is detected, use that API " \
- "to pass BSM arguments, which allows the BSM to delay their " \
- "resolution; 2+: stress test the BCI API by calling more BSMs " \
- "via that API, instead of with the eagerly-resolved array.") \
- \
- diagnostic(bool, PauseAtStartup, false, \
- "Causes the VM to pause at startup time and wait for the pause " \
- "file to be removed (default: ./vm.paused.<pid>)") \
- \
- diagnostic(ccstr, PauseAtStartupFile, NULL, \
- "The file to create and for whose removal to await when pausing " \
- "at startup. (default: ./vm.paused.<pid>)") \
- \
- diagnostic(bool, PauseAtExit, false, \
- "Pause and wait for keypress on exit if a debugger is attached") \
- \
- product(bool, ExtendedDTraceProbes, false, \
- "Enable performance-impacting dtrace probes") \
- \
- product(bool, DTraceMethodProbes, false, \
- "Enable dtrace probes for method-entry and method-exit") \
- \
- product(bool, DTraceAllocProbes, false, \
- "Enable dtrace probes for object allocation") \
- \
- product(bool, DTraceMonitorProbes, false, \
- "Enable dtrace probes for monitor events") \
- \
- product(bool, RelaxAccessControlCheck, false, \
- "Relax the access control checks in the verifier") \
- \
- product(uintx, StringTableSize, defaultStringTableSize, \
- "Number of buckets in the interned String table " \
- "(will be rounded to nearest higher power of 2)") \
- range(minimumStringTableSize, 16777216ul /* 2^24 */) \
- \
- experimental(uintx, SymbolTableSize, defaultSymbolTableSize, \
- "Number of buckets in the JVM internal Symbol table") \
- range(minimumSymbolTableSize, 16777216ul /* 2^24 */) \
- \
- product(bool, UseStringDeduplication, false, \
- "Use string deduplication") \
- \
- product(uintx, StringDeduplicationAgeThreshold, 3, \
- "A string must reach this age (or be promoted to an old region) " \
- "to be considered for deduplication") \
- range(1, markWord::max_age) \
- \
- diagnostic(bool, StringDeduplicationResizeALot, false, \
- "Force table resize every time the table is scanned") \
- \
- diagnostic(bool, StringDeduplicationRehashALot, false, \
- "Force table rehash every time the table is scanned") \
- \
- diagnostic(bool, WhiteBoxAPI, false, \
- "Enable internal testing APIs") \
- \
- experimental(intx, SurvivorAlignmentInBytes, 0, \
- "Default survivor space alignment in bytes") \
- range(8, 256) \
- constraint(SurvivorAlignmentInBytesConstraintFunc,AfterErgo) \
- \
- product(ccstr, DumpLoadedClassList, NULL, \
- "Dump the names all loaded classes, that could be stored into " \
- "the CDS archive, in the specified file") \
- \
- product(ccstr, SharedClassListFile, NULL, \
- "Override the default CDS class list") \
- \
- product(ccstr, SharedArchiveFile, NULL, \
- "Override the default location of the CDS archive file") \
- \
- product(ccstr, ArchiveClassesAtExit, NULL, \
- "The path and name of the dynamic archive file") \
- \
- product(ccstr, ExtraSharedClassListFile, NULL, \
- "Extra classlist for building the CDS archive file") \
- \
- diagnostic(intx, ArchiveRelocationMode, 0, \
- "(0) first map at preferred address, and if " \
- "unsuccessful, map at alternative address (default); " \
- "(1) always map at alternative address; " \
- "(2) always map at preferred address, and if unsuccessful, " \
- "do not map the archive") \
- range(0, 2) \
- \
- experimental(size_t, ArrayAllocatorMallocLimit, \
- SOLARIS_ONLY(64*K) NOT_SOLARIS((size_t)-1), \
- "Allocation less than this value will be allocated " \
- "using malloc. Larger allocations will use mmap.") \
- \
- experimental(bool, AlwaysAtomicAccesses, false, \
- "Accesses to all variables should always be atomic") \
- \
- diagnostic(bool, UseUnalignedAccesses, false, \
- "Use unaligned memory accesses in Unsafe") \
- \
- product_pd(bool, PreserveFramePointer, \
- "Use the FP register for holding the frame pointer " \
- "and not as a general purpose register.") \
- \
- diagnostic(bool, CheckIntrinsics, true, \
- "When a class C is loaded, check that " \
- "(1) all intrinsics defined by the VM for class C are present "\
- "in the loaded class file and are marked with the " \
- "@HotSpotIntrinsicCandidate annotation, that " \
- "(2) there is an intrinsic registered for all loaded methods " \
- "that are annotated with the @HotSpotIntrinsicCandidate " \
- "annotation, and that " \
- "(3) no orphan methods exist for class C (i.e., methods for " \
- "which the VM declares an intrinsic but that are not declared "\
- "in the loaded class C. " \
- "Check (3) is available only in debug builds.") \
- \
- diagnostic_pd(intx, InitArrayShortSize, \
- "Threshold small size (in bytes) for clearing arrays. " \
- "Anything this size or smaller may get converted to discrete " \
- "scalar stores.") \
- range(0, max_intx) \
- constraint(InitArrayShortSizeConstraintFunc, AfterErgo) \
- \
- diagnostic(bool, CompilerDirectivesIgnoreCompileCommands, false, \
- "Disable backwards compatibility for compile commands.") \
- \
- diagnostic(bool, CompilerDirectivesPrint, false, \
- "Print compiler directives on installation.") \
- diagnostic(int, CompilerDirectivesLimit, 50, \
- "Limit on number of compiler directives.") \
- \
- product(ccstr, AllocateHeapAt, NULL, \
- "Path to the directoy where a temporary file will be created " \
- "to use as the backing store for Java Heap.") \
- \
- experimental(ccstr, AllocateOldGenAt, NULL, \
- "Path to the directoy where a temporary file will be " \
- "created to use as the backing store for old generation." \
- "File of size Xmx is pre-allocated for performance reason, so" \
- "we need that much space available") \
- \
- develop(int, VerifyMetaspaceInterval, DEBUG_ONLY(500) NOT_DEBUG(0), \
- "Run periodic metaspace verifications (0 - none, " \
- "1 - always, >1 every nth interval)") \
- \
- diagnostic(bool, ShowRegistersOnAssert, true, \
- "On internal errors, include registers in error report.") \
- \
- diagnostic(bool, UseSwitchProfiling, true, \
- "leverage profiling for table/lookup switch") \
- \
- develop(bool, TraceMemoryWriteback, false, \
- "Trace memory writeback operations") \
- \
- JFR_ONLY(product(bool, FlightRecorder, false, \
- "(Deprecated) Enable Flight Recorder")) \
- \
- JFR_ONLY(product(ccstr, FlightRecorderOptions, NULL, \
- "Flight Recorder options")) \
- \
- JFR_ONLY(product(ccstr, StartFlightRecording, NULL, \
- "Start flight recording with options")) \
- \
- experimental(bool, UseFastUnorderedTimeStamps, false, \
- "Use platform unstable time where supported for timestamps only") \
- \
- product(bool, UseNewFieldLayout, true, \
- "(Deprecated) Use new algorithm to compute field layouts") \
- \
- product(bool, UseEmptySlotsInSupers, true, \
- "Allow allocating fields in empty slots of super-classes") \
- \
-
-
-// Interface macros
-#define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name;
-#define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name;
-#define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name;
-#define DECLARE_PD_DIAGNOSTIC_FLAG(type, name, doc) extern "C" type name;
-#define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name;
-#define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name;
-#define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name;
-#ifdef PRODUCT
-#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value;
-#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name;
-#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) const type name = value;
-#else
-#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name;
-#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name;
-#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name;
-#endif // PRODUCT
-// Special LP64 flags, product only needed for now.
-#ifdef _LP64
-#define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name;
-#else
-#define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value;
-#endif // _LP64
+#include "runtime/flags/jvmFlag.hpp"
+NOTPROD_FLAG(bool, CheckCompressedOops, true, JVMFlag::DEFAULT,
+ "Generate checks in encoding/decoding code in debug VM");
+
+PRODUCT_FLAG(uintx, HeapSearchSteps, 3 PPC64_ONLY(+17), JVMFlag::RANGE,
+ "Heap allocation steps through preferred address regions to find"
+ " where it can allocate the heap. Number of steps to take per "
+ "region.");
+ FLAG_RANGE( HeapSearchSteps, 1, max_uintx);
+
+DEVELOP_FLAG(bool, CleanChunkPoolAsync, true, JVMFlag::DEFAULT,
+ "Clean the chunk pool asynchronously");
+
+PRODUCT_FLAG(uint, HandshakeTimeout, 0, JVMFlag::DIAGNOSTIC,
+ "If nonzero set a timeout in milliseconds for handshakes");
+
+PRODUCT_FLAG(bool, AlwaysSafeConstructors, false, JVMFlag::EXPERIMENTAL,
+ "Force safe construction, as if all fields are final.");
+
+PRODUCT_FLAG(bool, UnlockDiagnosticVMOptions, trueInDebug, JVMFlag::DIAGNOSTIC,
+ "Enable normal processing of flags relating to field diagnostics");
+
+PRODUCT_FLAG(bool, UnlockExperimentalVMOptions, false, JVMFlag::EXPERIMENTAL,
+ "Enable normal processing of flags relating to experimental "
+ "features");
+
+PRODUCT_FLAG(bool, JavaMonitorsInStackTrace, true, JVMFlag::DEFAULT,
+ "Print information about Java monitor locks when the stacks are"
+ "dumped");
+
+PRODUCT_FLAG_PD(bool, UseLargePages, JVMFlag::DEFAULT,
+ "Use large page memory");
+
+PRODUCT_FLAG_PD(bool, UseLargePagesIndividualAllocation, JVMFlag::DEFAULT,
+ "Allocate large pages individually for better affinity");
+
+DEVELOP_FLAG(bool, LargePagesIndividualAllocationInjectError, false, JVMFlag::DEFAULT,
+ "Fail large pages individual allocation");
+
+PRODUCT_FLAG(bool, UseLargePagesInMetaspace, false, JVMFlag::DEFAULT,
+ "Use large page memory in metaspace. "
+ "Only used if UseLargePages is enabled.");
+
+PRODUCT_FLAG(bool, UseNUMA, false, JVMFlag::DEFAULT,
+ "Use NUMA if available");
+
+PRODUCT_FLAG(bool, UseNUMAInterleaving, false, JVMFlag::DEFAULT,
+ "Interleave memory across NUMA nodes if available");
+
+PRODUCT_FLAG(size_t, NUMAInterleaveGranularity, 2*M, JVMFlag::RANGE,
+ "Granularity to use for NUMA interleaving on Windows OS");
+ FLAG_CUSTOM_RANGE( NUMAInterleaveGranularity, VMAllocationGranularity);
+
+PRODUCT_FLAG(bool, ForceNUMA, false, JVMFlag::DEFAULT,
+ "Force NUMA optimizations on single-node/UMA systems");
+
+PRODUCT_FLAG(uintx, NUMAChunkResizeWeight, 20, JVMFlag::RANGE,
+ "Percentage (0-100) used to weight the current sample when "
+ "computing exponentially decaying average for "
+ "AdaptiveNUMAChunkSizing");
+ FLAG_RANGE( NUMAChunkResizeWeight, 0, 100);
+
+PRODUCT_FLAG(size_t, NUMASpaceResizeRate, 1*G, JVMFlag::RANGE,
+ "Do not reallocate more than this amount per collection");
+ FLAG_RANGE( NUMASpaceResizeRate, 0, max_uintx);
+
+PRODUCT_FLAG(bool, UseAdaptiveNUMAChunkSizing, true, JVMFlag::DEFAULT,
+ "Enable adaptive chunk sizing for NUMA");
+
+PRODUCT_FLAG(bool, NUMAStats, false, JVMFlag::DEFAULT,
+ "Print NUMA stats in detailed heap information");
+
+PRODUCT_FLAG(uintx, NUMAPageScanRate, 256, JVMFlag::RANGE,
+ "Maximum number of pages to include in the page scan procedure");
+ FLAG_RANGE( NUMAPageScanRate, 0, max_uintx);
+
+PRODUCT_FLAG(bool, UseAES, false, JVMFlag::DEFAULT,
+ "Control whether AES instructions are used when available");
+
+PRODUCT_FLAG(bool, UseFMA, false, JVMFlag::DEFAULT,
+ "Control whether FMA instructions are used when available");
+
+PRODUCT_FLAG(bool, UseSHA, false, JVMFlag::DEFAULT,
+ "Control whether SHA instructions are used when available");
+
+PRODUCT_FLAG(bool, UseGHASHIntrinsics, false, JVMFlag::DIAGNOSTIC,
+ "Use intrinsics for GHASH versions of crypto");
+
+PRODUCT_FLAG(bool, UseBASE64Intrinsics, false, JVMFlag::DEFAULT,
+ "Use intrinsics for java.util.Base64");
+
+PRODUCT_FLAG(size_t, LargePageSizeInBytes, 0, JVMFlag::RANGE,
+ "Large page size (0 to let VM choose the page size)");
+ FLAG_RANGE( LargePageSizeInBytes, 0, max_uintx);
+
+PRODUCT_FLAG(size_t, LargePageHeapSizeThreshold, 128*M, JVMFlag::RANGE,
+ "Use large pages if maximum heap is at least this big");
+ FLAG_RANGE( LargePageHeapSizeThreshold, 0, max_uintx);
+
+PRODUCT_FLAG(bool, ForceTimeHighResolution, false, JVMFlag::DEFAULT,
+ "Using high time resolution (for Win32 only)");
+
+DEVELOP_FLAG(bool, TracePcPatching, false, JVMFlag::DEFAULT,
+ "Trace usage of frame::patch_pc");
+
+DEVELOP_FLAG(bool, TraceRelocator, false, JVMFlag::DEFAULT,
+ "Trace the bytecode relocator");
+
+DEVELOP_FLAG(bool, TraceLongCompiles, false, JVMFlag::DEFAULT,
+ "Print out every time compilation is longer than "
+ "a given threshold");
+
+PRODUCT_FLAG(bool, SafepointALot, false, JVMFlag::DIAGNOSTIC,
+ "Generate a lot of safepoints. This works with "
+ "GuaranteedSafepointInterval");
+
+PRODUCT_FLAG(bool, HandshakeALot, false, JVMFlag::DIAGNOSTIC,
+ "Generate a lot of handshakes. This works with "
+ "GuaranteedSafepointInterval");
+
+PRODUCT_FLAG_PD(bool, BackgroundCompilation, JVMFlag::DEFAULT,
+ "A thread requesting compilation is not blocked during "
+ "compilation");
+
+PRODUCT_FLAG(bool, PrintVMQWaitTime, false, JVMFlag::DEFAULT,
+ "(Deprecated) Print out the waiting time in VM operation queue");
+
+PRODUCT_FLAG(bool, MethodFlushing, true, JVMFlag::DEFAULT,
+ "Reclamation of zombie and not-entrant methods");
+
+DEVELOP_FLAG(bool, VerifyStack, false, JVMFlag::DEFAULT,
+ "Verify stack of each thread when it is entering a runtime call");
+
+PRODUCT_FLAG(bool, ForceUnreachable, false, JVMFlag::DIAGNOSTIC,
+ "Make all non code cache addresses to be unreachable by "
+ "forcing use of 64bit literal fixups");
+
+NOTPROD_FLAG(bool, StressDerivedPointers, false, JVMFlag::DEFAULT,
+ "Force scavenge when a derived pointer is detected on stack "
+ "after rtm call");
+
+DEVELOP_FLAG(bool, TraceDerivedPointers, false, JVMFlag::DEFAULT,
+ "Trace traversal of derived pointers on stack");
+
+NOTPROD_FLAG(bool, TraceCodeBlobStacks, false, JVMFlag::DEFAULT,
+ "Trace stack-walk of codeblobs");
+
+NOTPROD_FLAG(bool, PrintRewrites, false, JVMFlag::DEFAULT,
+ "Print methods that are being rewritten");
+
+PRODUCT_FLAG(bool, UseInlineCaches, true, JVMFlag::DEFAULT,
+ "Use Inline Caches for virtual calls ");
+
+PRODUCT_FLAG(bool, InlineArrayCopy, true, JVMFlag::DIAGNOSTIC,
+ "Inline arraycopy native that is known to be part of "
+ "base library DLL");
+
+PRODUCT_FLAG(bool, InlineObjectHash, true, JVMFlag::DIAGNOSTIC,
+ "Inline Object::hashCode() native that is known to be part "
+ "of base library DLL");
+
+PRODUCT_FLAG(bool, InlineNatives, true, JVMFlag::DIAGNOSTIC,
+ "Inline natives that are known to be part of base library DLL");
+
+PRODUCT_FLAG(bool, InlineMathNatives, true, JVMFlag::DIAGNOSTIC,
+ "Inline SinD, CosD, etc.");
+
+PRODUCT_FLAG(bool, InlineClassNatives, true, JVMFlag::DIAGNOSTIC,
+ "Inline Class.isInstance, etc");
+
+PRODUCT_FLAG(bool, InlineThreadNatives, true, JVMFlag::DIAGNOSTIC,
+ "Inline Thread.currentThread, etc");
+
+PRODUCT_FLAG(bool, InlineUnsafeOps, true, JVMFlag::DIAGNOSTIC,
+ "Inline memory ops (native methods) from Unsafe");
+
+PRODUCT_FLAG(bool, CriticalJNINatives, true, JVMFlag::DEFAULT,
+ "Check for critical JNI entry points");
+
+NOTPROD_FLAG(bool, StressCriticalJNINatives, false, JVMFlag::DEFAULT,
+ "Exercise register saving code in critical natives");
+
+PRODUCT_FLAG(bool, UseAESIntrinsics, false, JVMFlag::DIAGNOSTIC,
+ "Use intrinsics for AES versions of crypto");
+
+PRODUCT_FLAG(bool, UseAESCTRIntrinsics, false, JVMFlag::DIAGNOSTIC,
+ "Use intrinsics for the paralleled version of AES/CTR crypto");
+
+PRODUCT_FLAG(bool, UseSHA1Intrinsics, false, JVMFlag::DIAGNOSTIC,
+ "Use intrinsics for SHA-1 crypto hash function. "
+ "Requires that UseSHA is enabled.");
+
+PRODUCT_FLAG(bool, UseSHA256Intrinsics, false, JVMFlag::DIAGNOSTIC,
+ "Use intrinsics for SHA-224 and SHA-256 crypto hash functions. "
+ "Requires that UseSHA is enabled.");
+
+PRODUCT_FLAG(bool, UseSHA512Intrinsics, false, JVMFlag::DIAGNOSTIC,
+ "Use intrinsics for SHA-384 and SHA-512 crypto hash functions. "
+ "Requires that UseSHA is enabled.");
+
+PRODUCT_FLAG(bool, UseCRC32Intrinsics, false, JVMFlag::DIAGNOSTIC,
+ "use intrinsics for java.util.zip.CRC32");
+
+PRODUCT_FLAG(bool, UseCRC32CIntrinsics, false, JVMFlag::DIAGNOSTIC,
+ "use intrinsics for java.util.zip.CRC32C");
+
+PRODUCT_FLAG(bool, UseAdler32Intrinsics, false, JVMFlag::DIAGNOSTIC,
+ "use intrinsics for java.util.zip.Adler32");
+
+PRODUCT_FLAG(bool, UseVectorizedMismatchIntrinsic, false, JVMFlag::DIAGNOSTIC,
+ "Enables intrinsification of ArraysSupport.vectorizedMismatch()");
+
+PRODUCT_FLAG(ccstr, DisableIntrinsic, "", JVMFlag::DIAGNOSTIC | JVMFlag::STRINGLIST,
+ "do not expand intrinsics whose (internal) names appear here");
+
+DEVELOP_FLAG(bool, TraceCallFixup, false, JVMFlag::DEFAULT,
+ "Trace all call fixups");
+
+DEVELOP_FLAG(bool, DeoptimizeALot, false, JVMFlag::DEFAULT,
+ "Deoptimize at every exit from the runtime system");
+
+NOTPROD_FLAG(ccstr, DeoptimizeOnlyAt, "", JVMFlag::STRINGLIST,
+ "A comma separated list of bcis to deoptimize at");
+
+DEVELOP_FLAG(bool, DeoptimizeRandom, false, JVMFlag::DEFAULT,
+ "Deoptimize random frames on random exit from the runtime system");
+
+NOTPROD_FLAG(bool, ZombieALot, false, JVMFlag::DEFAULT,
+ "Create zombies (non-entrant) at exit from the runtime system");
+
+NOTPROD_FLAG(bool, WalkStackALot, false, JVMFlag::DEFAULT,
+ "Trace stack (no print) at every exit from the runtime system");
+
+PRODUCT_FLAG(bool, Debugging, false, JVMFlag::DEFAULT,
+ "Set when executing debug methods in debug.cpp "
+ "(to prevent triggering assertions)");
+
+NOTPROD_FLAG(bool, VerifyLastFrame, false, JVMFlag::DEFAULT,
+ "Verify oops on last frame on entry to VM");
+
+PRODUCT_FLAG(bool, SafepointTimeout, false, JVMFlag::DEFAULT,
+ "Time out and warn or fail after SafepointTimeoutDelay "
+ "milliseconds if failed to reach safepoint");
+
+PRODUCT_FLAG(bool, AbortVMOnSafepointTimeout, false, JVMFlag::DIAGNOSTIC,
+ "Abort upon failure to reach safepoint (see SafepointTimeout)");
+
+PRODUCT_FLAG(bool, AbortVMOnVMOperationTimeout, false, JVMFlag::DIAGNOSTIC,
+ "Abort upon failure to complete VM operation promptly");
+
+PRODUCT_FLAG(intx, AbortVMOnVMOperationTimeoutDelay, 1000, JVMFlag::DIAGNOSTIC | JVMFlag::RANGE,
+ "Delay in milliseconds for option AbortVMOnVMOperationTimeout");
+ FLAG_RANGE( AbortVMOnVMOperationTimeoutDelay, 0, max_intx);
+
+
+ // 50 retries * (5 * current_retry_count) millis = ~6.375 seconds
+ // typically, at most a few retries are needed
+PRODUCT_FLAG(intx, SuspendRetryCount, 50, JVMFlag::RANGE,
+ "Maximum retry count for an external suspend request");
+ FLAG_RANGE( SuspendRetryCount, 0, max_intx);
+
+PRODUCT_FLAG(intx, SuspendRetryDelay, 5, JVMFlag::RANGE,
+ "Milliseconds to delay per retry (* current_retry_count)");
+ FLAG_RANGE( SuspendRetryDelay, 0, max_intx);
+
+PRODUCT_FLAG(bool, AssertOnSuspendWaitFailure, false, JVMFlag::DEFAULT,
+ "Assert/Guarantee on external suspend wait failure");
+
+PRODUCT_FLAG(bool, TraceSuspendWaitFailures, false, JVMFlag::DEFAULT,
+ "Trace external suspend wait failures");
+
+PRODUCT_FLAG(bool, MaxFDLimit, true, JVMFlag::DEFAULT,
+ "Bump the number of file descriptors to maximum in Solaris");
+
+PRODUCT_FLAG(bool, LogEvents, true, JVMFlag::DIAGNOSTIC,
+ "Enable the various ring buffer event logs");
+
+PRODUCT_FLAG(uintx, LogEventsBufferEntries, 20, JVMFlag::DIAGNOSTIC | JVMFlag::RANGE,
+ "Number of ring buffer event logs");
+ FLAG_RANGE( LogEventsBufferEntries, 1, NOT_LP64(1*K) LP64_ONLY(1*M));
+
+PRODUCT_FLAG(bool, BytecodeVerificationRemote, true, JVMFlag::DIAGNOSTIC,
+ "Enable the Java bytecode verifier for remote classes");
+
+PRODUCT_FLAG(bool, BytecodeVerificationLocal, false, JVMFlag::DIAGNOSTIC,
+ "Enable the Java bytecode verifier for local classes");
+
+DEVELOP_FLAG(bool, ForceFloatExceptions, trueInDebug, JVMFlag::DEFAULT,
+ "Force exceptions on FP stack under/overflow");
+
+DEVELOP_FLAG(bool, VerifyStackAtCalls, false, JVMFlag::DEFAULT,
+ "Verify that the stack pointer is unchanged after calls");
+
+DEVELOP_FLAG(bool, TraceJavaAssertions, false, JVMFlag::DEFAULT,
+ "Trace java language assertions");
+
+NOTPROD_FLAG(bool, VerifyCodeCache, false, JVMFlag::DEFAULT,
+ "Verify code cache on memory allocation/deallocation");
+
+DEVELOP_FLAG(bool, UseMallocOnly, false, JVMFlag::DEFAULT,
+ "Use only malloc/free for allocation (no resource area/arena)");
+
+DEVELOP_FLAG(bool, ZapResourceArea, trueInDebug, JVMFlag::DEFAULT,
+ "Zap freed resource/arena space with 0xABABABAB");
+
+NOTPROD_FLAG(bool, ZapVMHandleArea, trueInDebug, JVMFlag::DEFAULT,
+ "Zap freed VM handle space with 0xBCBCBCBC");
+
+NOTPROD_FLAG(bool, ZapStackSegments, trueInDebug, JVMFlag::DEFAULT,
+ "Zap allocated/freed stack segments with 0xFADFADED");
+
+DEVELOP_FLAG(bool, ZapUnusedHeapArea, trueInDebug, JVMFlag::DEFAULT,
+ "Zap unused heap space with 0xBAADBABE");
+
+DEVELOP_FLAG(bool, CheckZapUnusedHeapArea, false, JVMFlag::DEFAULT,
+ "Check zapping of unused heap space");
+
+DEVELOP_FLAG(bool, ZapFillerObjects, trueInDebug, JVMFlag::DEFAULT,
+ "Zap filler objects with 0xDEAFBABE");
+
+DEVELOP_FLAG(bool, PrintVMMessages, true, JVMFlag::DEFAULT,
+ "Print VM messages on console");
+
+NOTPROD_FLAG(uintx, ErrorHandlerTest, 0, JVMFlag::DEFAULT,
+ "If > 0, provokes an error after VM initialization; the value "
+ "determines which error to provoke. See test_error_handler() "
+ "in vmError.cpp.");
+
+NOTPROD_FLAG(uintx, TestCrashInErrorHandler, 0, JVMFlag::DEFAULT,
+ "If > 0, provokes an error inside VM error handler (a secondary "
+ "crash). see test_error_handler() in vmError.cpp");
+
+NOTPROD_FLAG(bool, TestSafeFetchInErrorHandler, false, JVMFlag::DEFAULT,
+ "If true, tests SafeFetch inside error handler.");
+
+DEVELOP_FLAG(bool, TestUnresponsiveErrorHandler, false, JVMFlag::DEFAULT,
+ "If true, simulates an unresponsive error handler.");
+
+DEVELOP_FLAG(bool, Verbose, false, JVMFlag::DEFAULT,
+ "Print additional debugging information from other modes");
+
+DEVELOP_FLAG(bool, PrintMiscellaneous, false, JVMFlag::DEFAULT,
+ "Print uncategorized debugging information (requires +Verbose)");
+
+DEVELOP_FLAG(bool, WizardMode, false, JVMFlag::DEFAULT,
+ "Print much more debugging information");
+
+PRODUCT_FLAG(bool, ShowMessageBoxOnError, false, JVMFlag::DEFAULT,
+ "Keep process alive on VM fatal error");
+
+PRODUCT_FLAG(bool, CreateCoredumpOnCrash, true, JVMFlag::DEFAULT,
+ "Create core/mini dump on VM fatal error");
+
+PRODUCT_FLAG(uint64_t, ErrorLogTimeout, 2 * 60, JVMFlag::RANGE,
+ "Timeout, in seconds, to limit the time spent on writing an "
+ "error log in case of a crash.");
+ FLAG_RANGE( ErrorLogTimeout, 0, (uint64_t)max_jlong/1000);
+
+PRODUCT_FLAG_PD(bool, UseOSErrorReporting, JVMFlag::DEFAULT,
+ "Let VM fatal error propagate to the OS (ie. WER on Windows)");
+
+PRODUCT_FLAG(bool, SuppressFatalErrorMessage, false, JVMFlag::DEFAULT,
+ "Report NO fatal error message (avoid deadlock)");
+
+PRODUCT_FLAG(ccstr, OnError, "", JVMFlag::STRINGLIST,
+ "Run user-defined commands on fatal error; see VMError.cpp "
+ "for examples");
+
+PRODUCT_FLAG(ccstr, OnOutOfMemoryError, "", JVMFlag::STRINGLIST,
+ "Run user-defined commands on first java.lang.OutOfMemoryError");
+
+PRODUCT_FLAG(bool, HeapDumpBeforeFullGC, false, JVMFlag::MANAGEABLE,
+ "Dump heap to file before any major stop-the-world GC");
+
+PRODUCT_FLAG(bool, HeapDumpAfterFullGC, false, JVMFlag::MANAGEABLE,
+ "Dump heap to file after any major stop-the-world GC");
+
+PRODUCT_FLAG(bool, HeapDumpOnOutOfMemoryError, false, JVMFlag::MANAGEABLE,
+ "Dump heap to file when java.lang.OutOfMemoryError is thrown");
+
+PRODUCT_FLAG(ccstr, HeapDumpPath, NULL, JVMFlag::MANAGEABLE,
+ "When HeapDumpOnOutOfMemoryError is on, the path (filename or "
+ "directory) of the dump file (defaults to java_pid<pid>.hprof "
+ "in the working directory)");
+
+DEVELOP_FLAG(bool, BreakAtWarning, false, JVMFlag::DEFAULT,
+ "Execute breakpoint upon encountering VM warning");
+
+PRODUCT_FLAG(ccstr, NativeMemoryTracking, "off", JVMFlag::DEFAULT,
+ "Native memory tracking options");
+
+PRODUCT_FLAG(bool, PrintNMTStatistics, false, JVMFlag::DIAGNOSTIC,
+ "Print native memory tracking summary data if it is on");
+
+PRODUCT_FLAG(bool, LogCompilation, false, JVMFlag::DIAGNOSTIC,
+ "Log compilation activity in detail to LogFile");
+
+PRODUCT_FLAG(bool, PrintCompilation, false, JVMFlag::DEFAULT,
+ "Print compilations");
+
+PRODUCT_FLAG(bool, PrintExtendedThreadInfo, false, JVMFlag::DEFAULT,
+ "Print more information in thread dump");
+
+PRODUCT_FLAG(intx, ScavengeRootsInCode, 2, JVMFlag::DIAGNOSTIC | JVMFlag::RANGE,
+ "0: do not allow scavengable oops in the code cache; "
+ "1: allow scavenging from the code cache; "
+ "2: emit as many constants as the compiler can see");
+ FLAG_RANGE( ScavengeRootsInCode, 0, 2);
+
+PRODUCT_FLAG(bool, AlwaysRestoreFPU, false, JVMFlag::DEFAULT,
+ "Restore the FPU control word after every JNI call (expensive)");
+
+PRODUCT_FLAG(bool, PrintCompilation2, false, JVMFlag::DIAGNOSTIC,
+ "Print additional statistics per compilation");
+
+PRODUCT_FLAG(bool, PrintAdapterHandlers, false, JVMFlag::DIAGNOSTIC,
+ "Print code generated for i2c/c2i adapters");
+
+PRODUCT_FLAG(bool, VerifyAdapterCalls, trueInDebug, JVMFlag::DIAGNOSTIC,
+ "Verify that i2c/c2i adapters are called properly");
+
+DEVELOP_FLAG(bool, VerifyAdapterSharing, false, JVMFlag::DEFAULT,
+ "Verify that the code for shared adapters is the equivalent");
+
+PRODUCT_FLAG(bool, PrintAssembly, false, JVMFlag::DIAGNOSTIC,
+ "Print assembly code (using external disassembler.so)");
+
+PRODUCT_FLAG(ccstr, PrintAssemblyOptions, NULL, JVMFlag::DIAGNOSTIC,
+ "Print options string passed to disassembler.so");
+
+NOTPROD_FLAG(bool, PrintNMethodStatistics, false, JVMFlag::DEFAULT,
+ "Print a summary statistic for the generated nmethods");
+
+PRODUCT_FLAG(bool, PrintNMethods, false, JVMFlag::DIAGNOSTIC,
+ "Print assembly code for nmethods when generated");
+
+PRODUCT_FLAG(bool, PrintNativeNMethods, false, JVMFlag::DIAGNOSTIC,
+ "Print assembly code for native nmethods when generated");
+
+DEVELOP_FLAG(bool, PrintDebugInfo, false, JVMFlag::DEFAULT,
+ "Print debug information for all nmethods when generated");
+
+DEVELOP_FLAG(bool, PrintRelocations, false, JVMFlag::DEFAULT,
+ "Print relocation information for all nmethods when generated");
+
+DEVELOP_FLAG(bool, PrintDependencies, false, JVMFlag::DEFAULT,
+ "Print dependency information for all nmethods when generated");
+
+DEVELOP_FLAG(bool, PrintExceptionHandlers, false, JVMFlag::DEFAULT,
+ "Print exception handler tables for all nmethods when generated");
+
+DEVELOP_FLAG(bool, StressCompiledExceptionHandlers, false, JVMFlag::DEFAULT,
+ "Exercise compiled exception handlers");
+
+DEVELOP_FLAG(bool, InterceptOSException, false, JVMFlag::DEFAULT,
+ "Start debugger when an implicit OS (e.g. NULL) "
+ "exception happens");
+
+PRODUCT_FLAG(bool, PrintCodeCache, false, JVMFlag::DEFAULT,
+ "Print the code cache memory usage when exiting");
+
+DEVELOP_FLAG(bool, PrintCodeCache2, false, JVMFlag::DEFAULT,
+ "Print detailed usage information on the code cache when exiting");
+
+PRODUCT_FLAG(bool, PrintCodeCacheOnCompilation, false, JVMFlag::DEFAULT,
+ "Print the code cache memory usage each time a method is "
+ "compiled");
+
+PRODUCT_FLAG(bool, PrintCodeHeapAnalytics, false, JVMFlag::DIAGNOSTIC,
+ "Print code heap usage statistics on exit and on full condition");
+
+PRODUCT_FLAG(bool, PrintStubCode, false, JVMFlag::DIAGNOSTIC,
+ "Print generated stub code");
+
+PRODUCT_FLAG(bool, StackTraceInThrowable, true, JVMFlag::DEFAULT,
+ "Collect backtrace in throwable when exception happens");
+
+PRODUCT_FLAG(bool, OmitStackTraceInFastThrow, true, JVMFlag::DEFAULT,
+ "Omit backtraces for some 'hot' exceptions in optimized code");
+
+PRODUCT_FLAG(bool, ShowCodeDetailsInExceptionMessages, false, JVMFlag::MANAGEABLE,
+ "Show exception messages from RuntimeExceptions that contain "
+ "snippets of the failing code. Disable this to improve privacy.");
+
+PRODUCT_FLAG(bool, PrintWarnings, true, JVMFlag::DEFAULT,
+ "Print JVM warnings to output stream");
+
+NOTPROD_FLAG(uintx, WarnOnStalledSpinLock, 0, JVMFlag::DEFAULT,
+ "Print warnings for stalled SpinLocks");
+
+PRODUCT_FLAG(bool, RegisterFinalizersAtInit, true, JVMFlag::DEFAULT,
+ "Register finalizable objects at end of Object.<init> or "
+ "after allocation");
+
+DEVELOP_FLAG(bool, RegisterReferences, true, JVMFlag::DEFAULT,
+ "Tell whether the VM should register soft/weak/final/phantom "
+ "references");
+
+DEVELOP_FLAG(bool, IgnoreRewrites, false, JVMFlag::DEFAULT,
+ "Suppress rewrites of bytecodes in the oopmap generator. "
+ "This is unsafe!");
+
+DEVELOP_FLAG(bool, PrintCodeCacheExtension, false, JVMFlag::DEFAULT,
+ "Print extension of code cache");
+
+DEVELOP_FLAG(bool, UsePrivilegedStack, true, JVMFlag::DEFAULT,
+ "Enable the security JVM functions");
+
+DEVELOP_FLAG(bool, ProtectionDomainVerification, true, JVMFlag::DEFAULT,
+ "Verify protection domain before resolution in system dictionary");
+
+PRODUCT_FLAG(bool, ClassUnloading, true, JVMFlag::DEFAULT,
+ "Do unloading of classes");
+
+PRODUCT_FLAG(bool, ClassUnloadingWithConcurrentMark, true, JVMFlag::DEFAULT,
+ "Do unloading of classes with a concurrent marking cycle");
+
+DEVELOP_FLAG(bool, DisableStartThread, false, JVMFlag::DEFAULT,
+ "Disable starting of additional Java threads "
+ "(for debugging only)");
+
+DEVELOP_FLAG(bool, MemProfiling, false, JVMFlag::DEFAULT,
+ "Write memory usage profiling to log file");
+
+DEVELOP_FLAG(bool, PrintSystemDictionaryAtExit, false, JVMFlag::DEFAULT,
+ "Print the system dictionary at exit");
+
+PRODUCT_FLAG(bool, DynamicallyResizeSystemDictionaries, true, JVMFlag::DIAGNOSTIC,
+ "Dynamically resize system dictionaries as needed");
+
+PRODUCT_FLAG(bool, AlwaysLockClassLoader, false, JVMFlag::DEFAULT,
+ "Require the VM to acquire the class loader lock before calling "
+ "loadClass() even for class loaders registering "
+ "as parallel capable");
+
+PRODUCT_FLAG(bool, AllowParallelDefineClass, false, JVMFlag::DEFAULT,
+ "Allow parallel defineClass requests for class loaders "
+ "registering as parallel capable");
+
+PRODUCT_FLAG_PD(bool, DontYieldALot, JVMFlag::DEFAULT,
+ "Throw away obvious excess yield calls");
+
+DEVELOP_FLAG(bool, UseDetachedThreads, true, JVMFlag::DEFAULT,
+ "Use detached threads that are recycled upon termination "
+ "(for Solaris only)");
+
+PRODUCT_FLAG(bool, DisablePrimordialThreadGuardPages, false, JVMFlag::EXPERIMENTAL,
+ "Disable the use of stack guard pages if the JVM is loaded "
+ "on the primordial process thread");
+
+PRODUCT_FLAG(bool, UseLWPSynchronization, true, JVMFlag::DEFAULT,
+ "Use LWP-based instead of libthread-based synchronization "
+ "(SPARC only)");
+
+PRODUCT_FLAG(intx, MonitorBound, 0, JVMFlag::RANGE,
+ "(Deprecated) Bound Monitor population");
+ FLAG_RANGE( MonitorBound, 0, max_jint);
+
+PRODUCT_FLAG(intx, MonitorUsedDeflationThreshold, 90, JVMFlag::EXPERIMENTAL | JVMFlag::RANGE,
+ "Percentage of used monitors before triggering cleanup "
+ "safepoint which deflates monitors (0 is off). "
+ "The check is performed on GuaranteedSafepointInterval.");
+ FLAG_RANGE( MonitorUsedDeflationThreshold, 0, 100);
+
+PRODUCT_FLAG(intx, hashCode, 5, JVMFlag::EXPERIMENTAL,
+ "(Unstable) select hashCode generation algorithm");
+
+PRODUCT_FLAG(bool, FilterSpuriousWakeups, true, JVMFlag::DEFAULT,
+ "When true prevents OS-level spurious, or premature, wakeups "
+ "from Object.wait (Ignored for Windows)");
+
+DEVELOP_FLAG(bool, UsePthreads, false, JVMFlag::DEFAULT,
+ "Use pthread-based instead of libthread-based synchronization "
+ "(SPARC only)");
+
+PRODUCT_FLAG(bool, ReduceSignalUsage, false, JVMFlag::DEFAULT,
+ "Reduce the use of OS signals in Java and/or the VM");
+
+DEVELOP_FLAG(bool, LoadLineNumberTables, true, JVMFlag::DEFAULT,
+ "Tell whether the class file parser loads line number tables");
+
+DEVELOP_FLAG(bool, LoadLocalVariableTables, true, JVMFlag::DEFAULT,
+ "Tell whether the class file parser loads local variable tables");
+
+DEVELOP_FLAG(bool, LoadLocalVariableTypeTables, true, JVMFlag::DEFAULT,
+ "Tell whether the class file parser loads local variable type"
+ "tables");
+
+PRODUCT_FLAG(bool, AllowUserSignalHandlers, false, JVMFlag::DEFAULT,
+ "Do not complain if the application installs signal handlers "
+ "(Solaris & Linux only)");
+
+PRODUCT_FLAG(bool, UseSignalChaining, true, JVMFlag::DEFAULT,
+ "Use signal-chaining to invoke signal handlers installed "
+ "by the application (Solaris & Linux only)");
+
+PRODUCT_FLAG(bool, RestoreMXCSROnJNICalls, false, JVMFlag::DEFAULT,
+ "Restore MXCSR when returning from JNI calls");
+
+PRODUCT_FLAG(bool, CheckJNICalls, false, JVMFlag::DEFAULT,
+ "Verify all arguments to JNI calls");
+
+PRODUCT_FLAG(bool, UseFastJNIAccessors, true, JVMFlag::DEFAULT,
+ "Use optimized versions of Get<Primitive>Field");
+
+PRODUCT_FLAG(intx, MaxJNILocalCapacity, 65536, JVMFlag::RANGE,
+ "Maximum allowable local JNI handle capacity to "
+ "EnsureLocalCapacity() and PushLocalFrame(), "
+ "where <= 0 is unlimited, default: 65536");
+ FLAG_RANGE( MaxJNILocalCapacity, min_intx, max_intx);
+
+PRODUCT_FLAG(bool, EagerXrunInit, false, JVMFlag::DEFAULT,
+ "Eagerly initialize -Xrun libraries; allows startup profiling, "
+ "but not all -Xrun libraries may support the state of the VM "
+ "at this time");
+
+PRODUCT_FLAG(bool, PreserveAllAnnotations, false, JVMFlag::DEFAULT,
+ "Preserve RuntimeInvisibleAnnotations as well "
+ "as RuntimeVisibleAnnotations");
+
+DEVELOP_FLAG(uintx, PreallocatedOutOfMemoryErrorCount, 4, JVMFlag::DEFAULT,
+ "Number of OutOfMemoryErrors preallocated with backtrace");
+
+PRODUCT_FLAG(bool, UseXMMForArrayCopy, false, JVMFlag::DEFAULT,
+ "Use SSE2 MOVQ instruction for Arraycopy");
+
+NOTPROD_FLAG(bool, PrintFieldLayout, false, JVMFlag::DEFAULT,
+ "Print field layout for each class");
+
+
+ // Need to limit the extent of the padding to reasonable size.
+ // 8K is well beyond the reasonable HW cache line size, even with
+ // aggressive prefetching, while still leaving the room for segregating
+ // among the distinct pages.
+PRODUCT_FLAG(intx, ContendedPaddingWidth, 128, JVMFlag::RANGE | JVMFlag::CONSTRAINT,
+ "How many bytes to pad the fields/classes marked @Contended with");
+ FLAG_RANGE( ContendedPaddingWidth, 0, 8192);
+ FLAG_CONSTRAINT( ContendedPaddingWidth, (void*)ContendedPaddingWidthConstraintFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG(bool, EnableContended, true, JVMFlag::DEFAULT,
+ "Enable @Contended annotation support");
+
+PRODUCT_FLAG(bool, RestrictContended, true, JVMFlag::DEFAULT,
+ "Restrict @Contended to trusted classes");
+
+PRODUCT_FLAG(bool, UseBiasedLocking, true, JVMFlag::DEFAULT,
+ "Enable biased locking in JVM");
+
+PRODUCT_FLAG(intx, BiasedLockingStartupDelay, 0, JVMFlag::RANGE | JVMFlag::CONSTRAINT,
+ "Number of milliseconds to wait before enabling biased locking");
+ //TODO: to avoid circular dependency, the min/max cannot be declared in header file
+ //FLAG_RANGE( BiasedLockingStartupDelay, 0, (intx)(max_jint-(max_jint%PeriodicTask::interval_gran)));
+ FLAG_CONSTRAINT( BiasedLockingStartupDelay, (void*)BiasedLockingStartupDelayFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG(bool, PrintBiasedLockingStatistics, false, JVMFlag::DIAGNOSTIC,
+ "Print statistics of biased locking in JVM");
+
+PRODUCT_FLAG(intx, BiasedLockingBulkRebiasThreshold, 20, JVMFlag::RANGE | JVMFlag::CONSTRAINT,
+ "Threshold of number of revocations per type to try to "
+ "rebias all objects in the heap of that type");
+ FLAG_RANGE( BiasedLockingBulkRebiasThreshold, 0, max_intx);
+ FLAG_CONSTRAINT( BiasedLockingBulkRebiasThreshold, (void*)BiasedLockingBulkRebiasThresholdFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG(intx, BiasedLockingBulkRevokeThreshold, 40, JVMFlag::RANGE | JVMFlag::CONSTRAINT,
+ "Threshold of number of revocations per type to permanently "
+ "revoke biases of all objects in the heap of that type");
+ FLAG_RANGE( BiasedLockingBulkRevokeThreshold, 0, max_intx);
+ FLAG_CONSTRAINT( BiasedLockingBulkRevokeThreshold, (void*)BiasedLockingBulkRevokeThresholdFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG(intx, BiasedLockingDecayTime, 25000, JVMFlag::RANGE | JVMFlag::CONSTRAINT,
+ "Decay time (in milliseconds) to re-enable bulk rebiasing of a "
+ "type after previous bulk rebias");
+ FLAG_RANGE( BiasedLockingDecayTime, 500, max_intx);
+ FLAG_CONSTRAINT( BiasedLockingDecayTime, (void*)BiasedLockingDecayTimeFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG(bool, ExitOnOutOfMemoryError, false, JVMFlag::DEFAULT,
+ "JVM exits on the first occurrence of an out-of-memory error");
+
+PRODUCT_FLAG(bool, CrashOnOutOfMemoryError, false, JVMFlag::DEFAULT,
+ "JVM aborts, producing an error log and core/mini dump, on the "
+ "first occurrence of an out-of-memory error");
+
+
+ // tracing
+DEVELOP_FLAG(bool, StressRewriter, false, JVMFlag::DEFAULT,
+ "Stress linktime bytecode rewriting");
+
+PRODUCT_FLAG(ccstr, TraceJVMTI, NULL, JVMFlag::DEFAULT,
+ "Trace flags for JVMTI functions and events");
+
+
+ // This option can change an EMCP method into an obsolete method.
+ // This can affect tests that except specific methods to be EMCP.
+ // This option should be used with caution.
+PRODUCT_FLAG(bool, StressLdcRewrite, false, JVMFlag::DEFAULT,
+ "Force ldc -> ldc_w rewrite during RedefineClasses");
+
+
+ // change to false by default sometime after Mustang
+PRODUCT_FLAG(bool, VerifyMergedCPBytecodes, true, JVMFlag::DEFAULT,
+ "Verify bytecodes after RedefineClasses constant pool merging");
+
+PRODUCT_FLAG(bool, AllowRedefinitionToAddDeleteMethods, false, JVMFlag::DEFAULT,
+ "(Deprecated) Allow redefinition to add and delete private "
+ "static or final methods for compatibility with old releases");
+
+DEVELOP_FLAG(bool, TraceBytecodes, false, JVMFlag::DEFAULT,
+ "Trace bytecode execution");
+
+DEVELOP_FLAG(bool, TraceICs, false, JVMFlag::DEFAULT,
+ "Trace inline cache changes");
+
+NOTPROD_FLAG(bool, TraceInvocationCounterOverflow, false, JVMFlag::DEFAULT,
+ "Trace method invocation counter overflow");
+
+DEVELOP_FLAG(bool, TraceInlineCacheClearing, false, JVMFlag::DEFAULT,
+ "Trace clearing of inline caches in nmethods");
+
+DEVELOP_FLAG(bool, TraceDependencies, false, JVMFlag::DEFAULT,
+ "Trace dependencies");
+
+DEVELOP_FLAG(bool, VerifyDependencies, trueInDebug, JVMFlag::DEFAULT,
+ "Exercise and verify the compilation dependency mechanism");
+
+DEVELOP_FLAG(bool, TraceNewOopMapGeneration, false, JVMFlag::DEFAULT,
+ "Trace OopMapGeneration");
+
+DEVELOP_FLAG(bool, TraceNewOopMapGenerationDetailed, false, JVMFlag::DEFAULT,
+ "Trace OopMapGeneration: print detailed cell states");
+
+DEVELOP_FLAG(bool, TimeOopMap, false, JVMFlag::DEFAULT,
+ "Time calls to GenerateOopMap::compute_map() in sum");
+
+DEVELOP_FLAG(bool, TimeOopMap2, false, JVMFlag::DEFAULT,
+ "Time calls to GenerateOopMap::compute_map() individually");
+
+DEVELOP_FLAG(bool, TraceOopMapRewrites, false, JVMFlag::DEFAULT,
+ "Trace rewriting of method oops during oop map generation");
+
+DEVELOP_FLAG(bool, TraceICBuffer, false, JVMFlag::DEFAULT,
+ "Trace usage of IC buffer");
+
+DEVELOP_FLAG(bool, TraceCompiledIC, false, JVMFlag::DEFAULT,
+ "Trace changes of compiled IC");
+
+DEVELOP_FLAG(bool, FLSVerifyDictionary, false, JVMFlag::DEFAULT,
+ "Do lots of (expensive) FLS dictionary verification");
+
+DEVELOP_FLAG(bool, CheckMemoryInitialization, false, JVMFlag::DEFAULT,
+ "Check memory initialization");
-ALL_FLAGS(DECLARE_DEVELOPER_FLAG, \
- DECLARE_PD_DEVELOPER_FLAG, \
- DECLARE_PRODUCT_FLAG, \
- DECLARE_PD_PRODUCT_FLAG, \
- DECLARE_DIAGNOSTIC_FLAG, \
- DECLARE_PD_DIAGNOSTIC_FLAG, \
- DECLARE_EXPERIMENTAL_FLAG, \
- DECLARE_NOTPRODUCT_FLAG, \
- DECLARE_MANAGEABLE_FLAG, \
- DECLARE_PRODUCT_RW_FLAG, \
- DECLARE_LP64_PRODUCT_FLAG, \
- IGNORE_RANGE, \
- IGNORE_CONSTRAINT)
+PRODUCT_FLAG(uintx, ProcessDistributionStride, 4, JVMFlag::RANGE,
+ "Stride through processors when distributing processes");
+ FLAG_RANGE( ProcessDistributionStride, 0, max_juint);
+
+DEVELOP_FLAG(bool, TraceFinalizerRegistration, false, JVMFlag::DEFAULT,
+ "Trace registration of final references");
+
+PRODUCT_FLAG(bool, IgnoreEmptyClassPaths, false, JVMFlag::DEFAULT,
+ "Ignore empty path elements in -classpath");
+
+PRODUCT_FLAG(size_t, InitialBootClassLoaderMetaspaceSize, NOT_LP64(2200*K) LP64_ONLY(4*M), JVMFlag::RANGE | JVMFlag::CONSTRAINT,
+ "Initial size of the boot class loader data metaspace");
+ FLAG_RANGE( InitialBootClassLoaderMetaspaceSize, 30*K, max_uintx/BytesPerWord);
+ FLAG_CONSTRAINT( InitialBootClassLoaderMetaspaceSize, (void*)InitialBootClassLoaderMetaspaceSizeConstraintFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG(bool, PrintHeapAtSIGBREAK, true, JVMFlag::DEFAULT,
+ "Print heap layout in response to SIGBREAK");
+
+PRODUCT_FLAG(bool, PrintClassHistogram, false, JVMFlag::MANAGEABLE,
+ "Print a histogram of class instances");
+
+PRODUCT_FLAG(double, ObjectCountCutOffPercent, 0.5, JVMFlag::EXPERIMENTAL | JVMFlag::RANGE,
+ "The percentage of the used heap that the instances of a class "
+ "must occupy for the class to generate a trace event");
+ FLAG_RANGE( ObjectCountCutOffPercent, 0.0, 100.0);
+
+
+ // JVMTI heap profiling
+PRODUCT_FLAG(bool, TraceJVMTIObjectTagging, false, JVMFlag::DIAGNOSTIC,
+ "Trace JVMTI object tagging calls");
+
+PRODUCT_FLAG(bool, VerifyBeforeIteration, false, JVMFlag::DIAGNOSTIC,
+ "Verify memory system before JVMTI iteration");
+
+
+ // compiler interface
+DEVELOP_FLAG(bool, CIPrintCompilerName, false, JVMFlag::DEFAULT,
+ "when CIPrint is active, print the name of the active compiler");
+
+PRODUCT_FLAG(bool, CIPrintCompileQueue, false, JVMFlag::DIAGNOSTIC,
+ "display the contents of the compile queue whenever a "
+ "compilation is enqueued");
+
+DEVELOP_FLAG(bool, CIPrintRequests, false, JVMFlag::DEFAULT,
+ "display every request for compilation");
+
+PRODUCT_FLAG(bool, CITime, false, JVMFlag::DEFAULT,
+ "collect timing information for compilation");
+
+DEVELOP_FLAG(bool, CITimeVerbose, false, JVMFlag::DEFAULT,
+ "be more verbose in compilation timings");
+
+DEVELOP_FLAG(bool, CITimeEach, false, JVMFlag::DEFAULT,
+ "display timing information after each successful compilation");
+
+DEVELOP_FLAG(bool, CICountOSR, false, JVMFlag::DEFAULT,
+ "use a separate counter when assigning ids to osr compilations");
+
+DEVELOP_FLAG(bool, CICompileNatives, true, JVMFlag::DEFAULT,
+ "compile native methods if supported by the compiler");
+
+DEVELOP_FLAG_PD(bool, CICompileOSR, JVMFlag::DEFAULT,
+ "compile on stack replacement methods if supported by the "
+ "compiler");
+
+DEVELOP_FLAG(bool, CIPrintMethodCodes, false, JVMFlag::DEFAULT,
+ "print method bytecodes of the compiled code");
+
+DEVELOP_FLAG(bool, CIPrintTypeFlow, false, JVMFlag::DEFAULT,
+ "print the results of ciTypeFlow analysis");
+
+DEVELOP_FLAG(bool, CITraceTypeFlow, false, JVMFlag::DEFAULT,
+ "detailed per-bytecode tracing of ciTypeFlow analysis");
+
+DEVELOP_FLAG(intx, OSROnlyBCI, -1, JVMFlag::DEFAULT,
+ "OSR only at this bci. Negative values mean exclude that bci");
+
+
+ // compiler
+ // notice: the max range value here is max_jint, not max_intx
+ // because of overflow issue
+PRODUCT_FLAG(intx, CICompilerCount, CI_COMPILER_COUNT, JVMFlag::RANGE | JVMFlag::CONSTRAINT,
+ "Number of compiler threads to run");
+ FLAG_RANGE( CICompilerCount, 0, max_jint);
+ FLAG_CONSTRAINT( CICompilerCount, (void*)CICompilerCountConstraintFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG(bool, UseDynamicNumberOfCompilerThreads, true, JVMFlag::DEFAULT,
+ "Dynamically choose the number of parallel compiler threads");
+
+PRODUCT_FLAG(bool, ReduceNumberOfCompilerThreads, true, JVMFlag::DIAGNOSTIC,
+ "Reduce the number of parallel compiler threads when they "
+ "are not used");
+
+PRODUCT_FLAG(bool, TraceCompilerThreads, false, JVMFlag::DIAGNOSTIC,
+ "Trace creation and removal of compiler threads");
+
+DEVELOP_FLAG(bool, InjectCompilerCreationFailure, false, JVMFlag::DEFAULT,
+ "Inject thread creation failures for "
+ "UseDynamicNumberOfCompilerThreads");
+
+DEVELOP_FLAG(bool, UseStackBanging, true, JVMFlag::DEFAULT,
+ "use stack banging for stack overflow checks (required for "
+ "proper StackOverflow handling; disable only to measure cost "
+ "of stackbanging)");
+
+DEVELOP_FLAG(bool, GenerateSynchronizationCode, true, JVMFlag::DEFAULT,
+ "generate locking/unlocking code for synchronized methods and "
+ "monitors");
+
+DEVELOP_FLAG(bool, GenerateRangeChecks, true, JVMFlag::DEFAULT,
+ "Generate range checks for array accesses");
+
+PRODUCT_FLAG_PD(bool, ImplicitNullChecks, JVMFlag::DIAGNOSTIC,
+ "Generate code for implicit null checks");
+
+PRODUCT_FLAG_PD(bool, TrapBasedNullChecks, JVMFlag::DEFAULT,
+ "Generate code for null checks that uses a cmp and trap "
+ "instruction raising SIGTRAP. This is only used if an access to"
+ "null (+offset) will not raise a SIGSEGV, i.e.,"
+ "ImplicitNullChecks don't work (PPC64).");
+
+PRODUCT_FLAG(bool, EnableThreadSMRExtraValidityChecks, true, JVMFlag::DIAGNOSTIC,
+ "Enable Thread SMR extra validity checks");
+
+PRODUCT_FLAG(bool, EnableThreadSMRStatistics, trueInDebug, JVMFlag::DIAGNOSTIC,
+ "Enable Thread SMR Statistics");
+
+PRODUCT_FLAG(bool, UseNotificationThread, true, JVMFlag::DEFAULT,
+ "Use Notification Thread");
+
+PRODUCT_FLAG(bool, Inline, true, JVMFlag::DEFAULT,
+ "Enable inlining");
+
+PRODUCT_FLAG(bool, ClipInlining, true, JVMFlag::DEFAULT,
+ "Clip inlining if aggregate method exceeds DesiredMethodLimit");
+
+DEVELOP_FLAG(bool, UseCHA, true, JVMFlag::DEFAULT,
+ "Enable CHA");
+
+PRODUCT_FLAG(bool, UseTypeProfile, true, JVMFlag::DEFAULT,
+ "Check interpreter profile for historically monomorphic calls");
+
+PRODUCT_FLAG(bool, PrintInlining, false, JVMFlag::DIAGNOSTIC,
+ "Print inlining optimizations");
+
+PRODUCT_FLAG(bool, UsePopCountInstruction, false, JVMFlag::DEFAULT,
+ "Use population count instruction");
+
+DEVELOP_FLAG(bool, EagerInitialization, false, JVMFlag::DEFAULT,
+ "Eagerly initialize classes if possible");
+
+PRODUCT_FLAG(bool, LogTouchedMethods, false, JVMFlag::DIAGNOSTIC,
+ "Log methods which have been ever touched in runtime");
+
+PRODUCT_FLAG(bool, PrintTouchedMethodsAtExit, false, JVMFlag::DIAGNOSTIC,
+ "Print all methods that have been ever touched in runtime");
+
+DEVELOP_FLAG(bool, TraceMethodReplacement, false, JVMFlag::DEFAULT,
+ "Print when methods are replaced do to recompilation");
+
+DEVELOP_FLAG(bool, PrintMethodFlushing, false, JVMFlag::DEFAULT,
+ "Print the nmethods being flushed");
+
+PRODUCT_FLAG(bool, PrintMethodFlushingStatistics, false, JVMFlag::DIAGNOSTIC,
+ "print statistics about method flushing");
+
+PRODUCT_FLAG(intx, HotMethodDetectionLimit, 100000, JVMFlag::DIAGNOSTIC | JVMFlag::RANGE,
+ "Number of compiled code invocations after which "
+ "the method is considered as hot by the flusher");
+ FLAG_RANGE( HotMethodDetectionLimit, 1, max_jint);
+
+PRODUCT_FLAG(intx, MinPassesBeforeFlush, 10, JVMFlag::DIAGNOSTIC | JVMFlag::RANGE,
+ "Minimum number of sweeper passes before an nmethod "
+ "can be flushed");
+ FLAG_RANGE( MinPassesBeforeFlush, 0, max_intx);
+
+PRODUCT_FLAG(bool, UseCodeAging, true, JVMFlag::DEFAULT,
+ "Insert counter to detect warm methods");
+
+PRODUCT_FLAG(bool, StressCodeAging, false, JVMFlag::DIAGNOSTIC,
+ "Start with counters compiled in");
+
+DEVELOP_FLAG(bool, StressCodeBuffers, false, JVMFlag::DEFAULT,
+ "Exercise code buffer expansion and other rare state changes");
+
+PRODUCT_FLAG(bool, DebugNonSafepoints, trueInDebug, JVMFlag::DIAGNOSTIC,
+ "Generate extra debugging information for non-safepoints in "
+ "nmethods");
+
+PRODUCT_FLAG(bool, PrintVMOptions, false, JVMFlag::DEFAULT,
+ "Print flags that appeared on the command line");
+
+PRODUCT_FLAG(bool, IgnoreUnrecognizedVMOptions, false, JVMFlag::DEFAULT,
+ "Ignore unrecognized VM options");
+
+PRODUCT_FLAG(bool, PrintCommandLineFlags, false, JVMFlag::DEFAULT,
+ "Print flags specified on command line or set by ergonomics");
+
+PRODUCT_FLAG(bool, PrintFlagsInitial, false, JVMFlag::DEFAULT,
+ "Print all VM flags before argument processing and exit VM");
+
+PRODUCT_FLAG(bool, PrintFlagsFinal, false, JVMFlag::DEFAULT,
+ "Print all VM flags after argument and ergonomic processing");
+
+NOTPROD_FLAG(bool, PrintFlagsWithComments, false, JVMFlag::DEFAULT,
+ "Print all VM flags with default values and descriptions and "
+ "exit");
+
+PRODUCT_FLAG(bool, PrintFlagsRanges, false, JVMFlag::DEFAULT,
+ "Print VM flags and their ranges");
+
+PRODUCT_FLAG(bool, SerializeVMOutput, true, JVMFlag::DIAGNOSTIC,
+ "Use a mutex to serialize output to tty and LogFile");
+
+PRODUCT_FLAG(bool, DisplayVMOutput, true, JVMFlag::DIAGNOSTIC,
+ "Display all VM output on the tty, independently of LogVMOutput");
+
+PRODUCT_FLAG(bool, LogVMOutput, false, JVMFlag::DIAGNOSTIC,
+ "Save VM output to LogFile");
+
+PRODUCT_FLAG(ccstr, LogFile, NULL, JVMFlag::DIAGNOSTIC,
+ "If LogVMOutput or LogCompilation is on, save VM output to "
+ "this file [default: ./hotspot_pid%p.log] (%p replaced with pid)");
+
+PRODUCT_FLAG(ccstr, ErrorFile, NULL, JVMFlag::DEFAULT,
+ "If an error occurs, save the error data to this file "
+ "[default: ./hs_err_pid%p.log] (%p replaced with pid)");
+
+PRODUCT_FLAG(bool, ExtensiveErrorReports, PRODUCT_ONLY(false) NOT_PRODUCT(true), JVMFlag::DEFAULT,
+ "Error reports are more extensive.");
+
+PRODUCT_FLAG(bool, DisplayVMOutputToStderr, false, JVMFlag::DEFAULT,
+ "If DisplayVMOutput is true, display all VM output to stderr");
+
+PRODUCT_FLAG(bool, DisplayVMOutputToStdout, false, JVMFlag::DEFAULT,
+ "If DisplayVMOutput is true, display all VM output to stdout");
+
+PRODUCT_FLAG(bool, ErrorFileToStderr, false, JVMFlag::DEFAULT,
+ "If true, error data is printed to stderr instead of a file");
+
+PRODUCT_FLAG(bool, ErrorFileToStdout, false, JVMFlag::DEFAULT,
+ "If true, error data is printed to stdout instead of a file");
+
+PRODUCT_FLAG(bool, UseHeavyMonitors, false, JVMFlag::DEFAULT,
+ "use heavyweight instead of lightweight Java monitors");
+
+PRODUCT_FLAG(bool, PrintStringTableStatistics, false, JVMFlag::DEFAULT,
+ "print statistics about the StringTable and SymbolTable");
+
+PRODUCT_FLAG(bool, VerifyStringTableAtExit, false, JVMFlag::DIAGNOSTIC,
+ "verify StringTable contents at exit");
+
+NOTPROD_FLAG(bool, PrintSymbolTableSizeHistogram, false, JVMFlag::DEFAULT,
+ "print histogram of the symbol table");
+
+NOTPROD_FLAG(bool, ExitVMOnVerifyError, false, JVMFlag::DEFAULT,
+ "standard exit from VM if bytecode verify error "
+ "(only in debug mode)");
+
+PRODUCT_FLAG(ccstr, AbortVMOnException, NULL, JVMFlag::DIAGNOSTIC,
+ "Call fatal if this exception is thrown. Example: "
+ "java -XX:AbortVMOnException=java.lang.NullPointerException Foo");
+
+PRODUCT_FLAG(ccstr, AbortVMOnExceptionMessage, NULL, JVMFlag::DIAGNOSTIC,
+ "Call fatal if the exception pointed by AbortVMOnException "
+ "has this message");
+
+DEVELOP_FLAG(bool, DebugVtables, false, JVMFlag::DEFAULT,
+ "add debugging code to vtable dispatch");
+
+NOTPROD_FLAG(bool, PrintVtableStats, false, JVMFlag::DEFAULT,
+ "print vtables stats at end of run");
+
+DEVELOP_FLAG(bool, TraceCreateZombies, false, JVMFlag::DEFAULT,
+ "trace creation of zombie nmethods");
+
+PRODUCT_FLAG(bool, RangeCheckElimination, true, JVMFlag::DEFAULT,
+ "Eliminate range checks");
+
+DEVELOP_FLAG_PD(bool, UncommonNullCast, JVMFlag::DEFAULT,
+ "track occurrences of null in casts; adjust compiler tactics");
+
+DEVELOP_FLAG(bool, TypeProfileCasts, true, JVMFlag::DEFAULT,
+ "treat casts like calls for purposes of type profiling");
+
+DEVELOP_FLAG(bool, TraceLivenessGen, false, JVMFlag::DEFAULT,
+ "Trace the generation of liveness analysis information");
+
+NOTPROD_FLAG(bool, TraceLivenessQuery, false, JVMFlag::DEFAULT,
+ "Trace queries of liveness analysis information");
+
+NOTPROD_FLAG(bool, CollectIndexSetStatistics, false, JVMFlag::DEFAULT,
+ "Collect information about IndexSets");
+
+DEVELOP_FLAG(bool, UseLoopSafepoints, true, JVMFlag::DEFAULT,
+ "Generate Safepoint nodes in every loop");
+
+DEVELOP_FLAG(intx, FastAllocateSizeLimit, 128*K, JVMFlag::DEFAULT,
+ /* Note: This value is zero mod 1<<13 for a cheap sparc set. */
+ "Inline allocations larger than this in doublewords must go slow");
+
+
+ // Note: This value is zero mod 1<<13 for a cheap sparc set.
+PRODUCT_FLAG_PD(bool, CompactStrings, JVMFlag::DEFAULT,
+ "Enable Strings to use single byte chars in backing store");
+
+PRODUCT_FLAG_PD(uintx, TypeProfileLevel, JVMFlag::CONSTRAINT,
+ "=XYZ, with Z: Type profiling of arguments at call; "
+ "Y: Type profiling of return value at call; "
+ "X: Type profiling of parameters to methods; "
+ "X, Y and Z in 0=off ; 1=jsr292 only; 2=all methods");
+ FLAG_CONSTRAINT( TypeProfileLevel, (void*)TypeProfileLevelConstraintFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG(intx, TypeProfileArgsLimit, 2, JVMFlag::RANGE,
+ "max number of call arguments to consider for type profiling");
+ FLAG_RANGE( TypeProfileArgsLimit, 0, 16);
+
+PRODUCT_FLAG(intx, TypeProfileParmsLimit, 2, JVMFlag::RANGE,
+ "max number of incoming parameters to consider for type profiling"
+ ", -1 for all");
+ FLAG_RANGE( TypeProfileParmsLimit, -1, 64);
+
+
+ // statistics
+DEVELOP_FLAG(bool, CountCompiledCalls, false, JVMFlag::DEFAULT,
+ "Count method invocations");
+
+NOTPROD_FLAG(bool, CountRuntimeCalls, false, JVMFlag::DEFAULT,
+ "Count VM runtime calls");
+
+DEVELOP_FLAG(bool, CountJNICalls, false, JVMFlag::DEFAULT,
+ "Count jni method invocations");
+
+NOTPROD_FLAG(bool, CountJVMCalls, false, JVMFlag::DEFAULT,
+ "Count jvm method invocations");
+
+NOTPROD_FLAG(bool, CountRemovableExceptions, false, JVMFlag::DEFAULT,
+ "Count exceptions that could be replaced by branches due to "
+ "inlining");
+
+NOTPROD_FLAG(bool, ICMissHistogram, false, JVMFlag::DEFAULT,
+ "Produce histogram of IC misses");
+
+
+ // interpreter
+PRODUCT_FLAG_PD(bool, RewriteBytecodes, JVMFlag::DEFAULT,
+ "Allow rewriting of bytecodes (bytecodes are not immutable)");
+
+PRODUCT_FLAG_PD(bool, RewriteFrequentPairs, JVMFlag::DEFAULT,
+ "Rewrite frequently used bytecode pairs into a single bytecode");
+
+PRODUCT_FLAG(bool, PrintInterpreter, false, JVMFlag::DIAGNOSTIC,
+ "Print the generated interpreter code");
+
+PRODUCT_FLAG(bool, UseInterpreter, true, JVMFlag::DEFAULT,
+ "Use interpreter for non-compiled methods");
+
+DEVELOP_FLAG(bool, UseFastSignatureHandlers, true, JVMFlag::DEFAULT,
+ "Use fast signature handlers for native calls");
+
+PRODUCT_FLAG(bool, UseLoopCounter, true, JVMFlag::DEFAULT,
+ "Increment invocation counter on backward branch");
+
+PRODUCT_FLAG_PD(bool, UseOnStackReplacement, JVMFlag::DEFAULT,
+ "Use on stack replacement, calls runtime if invoc. counter "
+ "overflows in loop");
+
+NOTPROD_FLAG(bool, TraceOnStackReplacement, false, JVMFlag::DEFAULT,
+ "Trace on stack replacement");
+
+PRODUCT_FLAG_PD(bool, PreferInterpreterNativeStubs, JVMFlag::DEFAULT,
+ "Use always interpreter stubs for native methods invoked via "
+ "interpreter");
+
+DEVELOP_FLAG(bool, CountBytecodes, false, JVMFlag::DEFAULT,
+ "Count number of bytecodes executed");
+
+DEVELOP_FLAG(bool, PrintBytecodeHistogram, false, JVMFlag::DEFAULT,
+ "Print histogram of the executed bytecodes");
+
+DEVELOP_FLAG(bool, PrintBytecodePairHistogram, false, JVMFlag::DEFAULT,
+ "Print histogram of the executed bytecode pairs");
+
+PRODUCT_FLAG(bool, PrintSignatureHandlers, false, JVMFlag::DIAGNOSTIC,
+ "Print code generated for native method signature handlers");
+
+DEVELOP_FLAG(bool, VerifyOops, false, JVMFlag::DEFAULT,
+ "Do plausibility checks for oops");
+
+DEVELOP_FLAG(bool, CheckUnhandledOops, false, JVMFlag::DEFAULT,
+ "Check for unhandled oops in VM code");
+
+DEVELOP_FLAG(bool, VerifyJNIFields, trueInDebug, JVMFlag::DEFAULT,
+ "Verify jfieldIDs for instance fields");
+
+NOTPROD_FLAG(bool, VerifyJNIEnvThread, false, JVMFlag::DEFAULT,
+ "Verify JNIEnv.thread == Thread::current() when entering VM "
+ "from JNI");
+
+DEVELOP_FLAG(bool, VerifyFPU, false, JVMFlag::DEFAULT,
+ "Verify FPU state (check for NaN's, etc.)");
+
+DEVELOP_FLAG(bool, VerifyThread, false, JVMFlag::DEFAULT,
+ "Watch the thread register for corruption (SPARC only)");
+
+DEVELOP_FLAG(bool, VerifyActivationFrameSize, false, JVMFlag::DEFAULT,
+ "Verify that activation frame didn't become smaller than its "
+ "minimal size");
+
+DEVELOP_FLAG(bool, TraceFrequencyInlining, false, JVMFlag::DEFAULT,
+ "Trace frequency based inlining");
+
+DEVELOP_FLAG_PD(bool, InlineIntrinsics, JVMFlag::DEFAULT,
+ "Inline intrinsics that can be statically resolved");
+
+PRODUCT_FLAG_PD(bool, ProfileInterpreter, JVMFlag::DEFAULT,
+ "Profile at the bytecode level during interpretation");
+
+DEVELOP_FLAG(bool, TraceProfileInterpreter, false, JVMFlag::DEFAULT,
+ "Trace profiling at the bytecode level during interpretation. "
+ "This outputs the profiling information collected to improve "
+ "jit compilation.");
+
+DEVELOP_FLAG_PD(bool, ProfileTraps, JVMFlag::DEFAULT,
+ "Profile deoptimization traps at the bytecode level");
+
+PRODUCT_FLAG(intx, ProfileMaturityPercentage, 20, JVMFlag::RANGE,
+ "number of method invocations/branches (expressed as % of "
+ "CompileThreshold) before using the method's profile");
+ FLAG_RANGE( ProfileMaturityPercentage, 0, 100);
+
+PRODUCT_FLAG(bool, PrintMethodData, false, JVMFlag::DIAGNOSTIC,
+ "Print the results of +ProfileInterpreter at end of run");
+
+DEVELOP_FLAG(bool, VerifyDataPointer, trueInDebug, JVMFlag::DEFAULT,
+ "Verify the method data pointer during interpreter profiling");
+
+DEVELOP_FLAG(bool, VerifyCompiledCode, false, JVMFlag::DEFAULT,
+ "Include miscellaneous runtime verifications in nmethod code; "
+ "default off because it disturbs nmethod size heuristics");
+
+NOTPROD_FLAG(bool, CrashGCForDumpingJavaThread, false, JVMFlag::DEFAULT,
+ "Manually make GC thread crash then dump java stack trace; "
+ "Test only");
+
+
+ // compilation
+PRODUCT_FLAG(bool, UseCompiler, true, JVMFlag::DEFAULT,
+ "Use Just-In-Time compilation");
+
+PRODUCT_FLAG(bool, UseCounterDecay, true, JVMFlag::DEFAULT,
+ "Adjust recompilation counters");
+
+DEVELOP_FLAG(intx, CounterHalfLifeTime, 30, JVMFlag::DEFAULT,
+ "Half-life time of invocation counters (in seconds)");
+
+DEVELOP_FLAG(intx, CounterDecayMinIntervalLength, 500, JVMFlag::DEFAULT,
+ "The minimum interval (in milliseconds) between invocation of "
+ "CounterDecay");
+
+PRODUCT_FLAG(bool, AlwaysCompileLoopMethods, false, JVMFlag::DEFAULT,
+ "When using recompilation, never interpret methods "
+ "containing loops");
+
+PRODUCT_FLAG(bool, DontCompileHugeMethods, true, JVMFlag::DEFAULT,
+ "Do not compile methods > HugeMethodLimit");
+
+
+ // Bytecode escape analysis estimation.
+PRODUCT_FLAG(bool, EstimateArgEscape, true, JVMFlag::DEFAULT,
+ "Analyze bytecodes to estimate escape state of arguments");
+
+PRODUCT_FLAG(intx, BCEATraceLevel, 0, JVMFlag::RANGE,
+ "How much tracing to do of bytecode escape analysis estimates "
+ "(0-3)");
+ FLAG_RANGE( BCEATraceLevel, 0, 3);
+
+PRODUCT_FLAG(intx, MaxBCEAEstimateLevel, 5, JVMFlag::RANGE,
+ "Maximum number of nested calls that are analyzed by BC EA");
+ FLAG_RANGE( MaxBCEAEstimateLevel, 0, max_jint);
+
+PRODUCT_FLAG(intx, MaxBCEAEstimateSize, 150, JVMFlag::RANGE,
+ "Maximum bytecode size of a method to be analyzed by BC EA");
+ FLAG_RANGE( MaxBCEAEstimateSize, 0, max_jint);
+
+PRODUCT_FLAG(intx, AllocatePrefetchStyle, 1, JVMFlag::RANGE,
+ "0 = no prefetch, "
+ "1 = generate prefetch instructions for each allocation, "
+ "2 = use TLAB watermark to gate allocation prefetch, "
+ "3 = generate one prefetch instruction per cache line");
+ FLAG_RANGE( AllocatePrefetchStyle, 0, 3);
+
+PRODUCT_FLAG(intx, AllocatePrefetchDistance, -1, JVMFlag::CONSTRAINT,
+ "Distance to prefetch ahead of allocation pointer. "
+ "-1: use system-specific value (automatically determined");
+ FLAG_CONSTRAINT( AllocatePrefetchDistance, (void*)AllocatePrefetchDistanceConstraintFunc, JVMFlag::AfterMemoryInit);
+
+PRODUCT_FLAG(intx, AllocatePrefetchLines, 3, JVMFlag::RANGE,
+ "Number of lines to prefetch ahead of array allocation pointer");
+ FLAG_RANGE( AllocatePrefetchLines, 1, 64);
+
+PRODUCT_FLAG(intx, AllocateInstancePrefetchLines, 1, JVMFlag::RANGE,
+ "Number of lines to prefetch ahead of instance allocation "
+ "pointer");
+ FLAG_RANGE( AllocateInstancePrefetchLines, 1, 64);
+
+PRODUCT_FLAG(intx, AllocatePrefetchStepSize, 16, JVMFlag::RANGE | JVMFlag::CONSTRAINT,
+ "Step size in bytes of sequential prefetch instructions");
+ FLAG_RANGE( AllocatePrefetchStepSize, 1, 512);
+ FLAG_CONSTRAINT( AllocatePrefetchStepSize, (void*)AllocatePrefetchStepSizeConstraintFunc, JVMFlag::AfterMemoryInit);
+
+PRODUCT_FLAG(intx, AllocatePrefetchInstr, 0, JVMFlag::CONSTRAINT,
+ "Select instruction to prefetch ahead of allocation pointer");
+ FLAG_CONSTRAINT( AllocatePrefetchInstr, (void*)AllocatePrefetchInstrConstraintFunc, JVMFlag::AfterMemoryInit);
+
+
+ // deoptimization
+DEVELOP_FLAG(bool, TraceDeoptimization, false, JVMFlag::DEFAULT,
+ "Trace deoptimization");
+
+DEVELOP_FLAG(bool, PrintDeoptimizationDetails, false, JVMFlag::DEFAULT,
+ "Print more information about deoptimization");
+
+DEVELOP_FLAG(bool, DebugDeoptimization, false, JVMFlag::DEFAULT,
+ "Tracing various information while debugging deoptimization");
+
+PRODUCT_FLAG(intx, SelfDestructTimer, 0, JVMFlag::RANGE,
+ "Will cause VM to terminate after a given time (in minutes) "
+ "(0 means off)");
+ FLAG_RANGE( SelfDestructTimer, 0, max_intx);
+
+PRODUCT_FLAG(intx, MaxJavaStackTraceDepth, 1024, JVMFlag::RANGE,
+ "The maximum number of lines in the stack trace for Java "
+ "exceptions (0 means all)");
+ FLAG_RANGE( MaxJavaStackTraceDepth, 0, max_jint/2);
+
+
+ // notice: the max range value here is max_jint, not max_intx
+ // because of overflow issue
+PRODUCT_FLAG(intx, GuaranteedSafepointInterval, 1000, JVMFlag::DIAGNOSTIC | JVMFlag::RANGE,
+ "Guarantee a safepoint (at least) every so many milliseconds "
+ "(0 means none)");
+ FLAG_RANGE( GuaranteedSafepointInterval, 0, max_jint);
+
+PRODUCT_FLAG(intx, SafepointTimeoutDelay, 10000, JVMFlag::RANGE,
+ "Delay in milliseconds for option SafepointTimeout");
+ FLAG_RANGE( SafepointTimeoutDelay, 0, max_intx LP64_ONLY(/MICROUNITS));
+
+PRODUCT_FLAG(intx, NmethodSweepActivity, 10, JVMFlag::RANGE,
+ "Removes cold nmethods from code cache if > 0. Higher values "
+ "result in more aggressive sweeping");
+ FLAG_RANGE( NmethodSweepActivity, 0, 2000);
+
+NOTPROD_FLAG(bool, LogSweeper, false, JVMFlag::DEFAULT,
+ "Keep a ring buffer of sweeper activity");
+
+NOTPROD_FLAG(intx, SweeperLogEntries, 1024, JVMFlag::DEFAULT,
+ "Number of records in the ring buffer of sweeper activity");
+
+NOTPROD_FLAG(intx, MemProfilingInterval, 500, JVMFlag::DEFAULT,
+ "Time between each invocation of the MemProfiler");
+
+DEVELOP_FLAG(intx, MallocCatchPtr, -1, JVMFlag::DEFAULT,
+ "Hit breakpoint when mallocing/freeing this pointer");
+
+NOTPROD_FLAG(ccstr, SuppressErrorAt, "", JVMFlag::STRINGLIST,
+ "List of assertions (file:line) to muzzle");
+
+DEVELOP_FLAG(intx, StackPrintLimit, 100, JVMFlag::DEFAULT,
+ "number of stack frames to print in VM-level stack dump");
+
+NOTPROD_FLAG(intx, MaxElementPrintSize, 256, JVMFlag::DEFAULT,
+ "maximum number of elements to print");
+
+NOTPROD_FLAG(intx, MaxSubklassPrintSize, 4, JVMFlag::DEFAULT,
+ "maximum number of subklasses to print when printing klass");
+
+PRODUCT_FLAG(intx, MaxInlineLevel, 15, JVMFlag::RANGE,
+ "maximum number of nested calls that are inlined");
+ FLAG_RANGE( MaxInlineLevel, 0, max_jint);
+
+PRODUCT_FLAG(intx, MaxRecursiveInlineLevel, 1, JVMFlag::RANGE,
+ "maximum number of nested recursive calls that are inlined");
+ FLAG_RANGE( MaxRecursiveInlineLevel, 0, max_jint);
+
+DEVELOP_FLAG(intx, MaxForceInlineLevel, 100, JVMFlag::RANGE,
+ "maximum number of nested calls that are forced for inlining "
+ "(using CompileCommand or marked w/ @ForceInline)");
+ FLAG_RANGE( MaxForceInlineLevel, 0, max_jint);
+
+PRODUCT_FLAG_PD(intx, InlineSmallCode, JVMFlag::RANGE,
+ "Only inline already compiled methods if their code size is "
+ "less than this");
+ FLAG_RANGE( InlineSmallCode, 0, max_jint);
+
+PRODUCT_FLAG(intx, MaxInlineSize, 35, JVMFlag::RANGE,
+ "The maximum bytecode size of a method to be inlined");
+ FLAG_RANGE( MaxInlineSize, 0, max_jint);
+
+PRODUCT_FLAG_PD(intx, FreqInlineSize, JVMFlag::RANGE,
+ "The maximum bytecode size of a frequent method to be inlined");
+ FLAG_RANGE( FreqInlineSize, 0, max_jint);
+
+PRODUCT_FLAG(intx, MaxTrivialSize, 6, JVMFlag::RANGE,
+ "The maximum bytecode size of a trivial method to be inlined");
+ FLAG_RANGE( MaxTrivialSize, 0, max_jint);
+
+PRODUCT_FLAG(intx, MinInliningThreshold, 250, JVMFlag::RANGE,
+ "The minimum invocation count a method needs to have to be "
+ "inlined");
+ FLAG_RANGE( MinInliningThreshold, 0, max_jint);
+
+DEVELOP_FLAG(intx, MethodHistogramCutoff, 100, JVMFlag::DEFAULT,
+ "The cutoff value for method invocation histogram (+CountCalls)");
+
+DEVELOP_FLAG(intx, DontYieldALotInterval, 10, JVMFlag::DEFAULT,
+ "Interval between which yields will be dropped (milliseconds)");
+
+NOTPROD_FLAG(intx, DeoptimizeALotInterval, 5, JVMFlag::DEFAULT,
+ "Number of exits until DeoptimizeALot kicks in");
+
+NOTPROD_FLAG(intx, ZombieALotInterval, 5, JVMFlag::DEFAULT,
+ "Number of exits until ZombieALot kicks in");
+
+PRODUCT_FLAG(uintx, MallocMaxTestWords, 0, JVMFlag::DIAGNOSTIC | JVMFlag::RANGE,
+ "If non-zero, maximum number of words that malloc/realloc can "
+ "allocate (for testing only)");
+ FLAG_RANGE( MallocMaxTestWords, 0, max_uintx);
+
+PRODUCT_FLAG(intx, TypeProfileWidth, 2, JVMFlag::RANGE,
+ "Number of receiver types to record in call/cast profile");
+ FLAG_RANGE( TypeProfileWidth, 0, 8);
+
+DEVELOP_FLAG(intx, BciProfileWidth, 2, JVMFlag::DEFAULT,
+ "Number of return bci's to record in ret profile");
+
+PRODUCT_FLAG(intx, PerMethodRecompilationCutoff, 400, JVMFlag::RANGE,
+ "After recompiling N times, stay in the interpreter (-1=>'Inf')");
+ FLAG_RANGE( PerMethodRecompilationCutoff, -1, max_intx);
+
+PRODUCT_FLAG(intx, PerBytecodeRecompilationCutoff, 200, JVMFlag::RANGE,
+ "Per-BCI limit on repeated recompilation (-1=>'Inf')");
+ FLAG_RANGE( PerBytecodeRecompilationCutoff, -1, max_intx);
+
+PRODUCT_FLAG(intx, PerMethodTrapLimit, 100, JVMFlag::RANGE,
+ "Limit on traps (of one kind) in a method (includes inlines)");
+ FLAG_RANGE( PerMethodTrapLimit, 0, max_jint);
+
+PRODUCT_FLAG(intx, PerMethodSpecTrapLimit, 5000, JVMFlag::EXPERIMENTAL | JVMFlag::RANGE,
+ "Limit on speculative traps (of one kind) in a method "
+ "(includes inlines)");
+ FLAG_RANGE( PerMethodSpecTrapLimit, 0, max_jint);
+
+PRODUCT_FLAG(intx, PerBytecodeTrapLimit, 4, JVMFlag::RANGE,
+ "Limit on traps (of one kind) at a particular BCI");
+ FLAG_RANGE( PerBytecodeTrapLimit, 0, max_jint);
+
+PRODUCT_FLAG(intx, SpecTrapLimitExtraEntries, 3, JVMFlag::EXPERIMENTAL,
+ "Extra method data trap entries for speculation");
+
+DEVELOP_FLAG(intx, InlineFrequencyRatio, 20, JVMFlag::RANGE,
+ "Ratio of call site execution to caller method invocation");
+ FLAG_RANGE( InlineFrequencyRatio, 0, max_jint);
+
+PRODUCT_FLAG_PD(intx, InlineFrequencyCount, JVMFlag::DIAGNOSTIC | JVMFlag::RANGE,
+ "Count of call site execution necessary to trigger frequent "
+ "inlining");
+ FLAG_RANGE( InlineFrequencyCount, 0, max_jint);
+
+DEVELOP_FLAG(intx, InlineThrowCount, 50, JVMFlag::RANGE,
+ "Force inlining of interpreted methods that throw this often");
+ FLAG_RANGE( InlineThrowCount, 0, max_jint);
+
+DEVELOP_FLAG(intx, InlineThrowMaxSize, 200, JVMFlag::RANGE,
+ "Force inlining of throwing methods smaller than this");
+ FLAG_RANGE( InlineThrowMaxSize, 0, max_jint);
+
+DEVELOP_FLAG(intx, ProfilerNodeSize, 1024, JVMFlag::RANGE,
+ "Size in K to allocate for the Profile Nodes of each thread");
+ FLAG_RANGE( ProfilerNodeSize, 0, 1024);
+
+PRODUCT_FLAG_PD(size_t, MetaspaceSize, JVMFlag::CONSTRAINT,
+ "Initial threshold (in bytes) at which a garbage collection "
+ "is done to reduce Metaspace usage");
+ FLAG_CONSTRAINT( MetaspaceSize, (void*)MetaspaceSizeConstraintFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG(size_t, MaxMetaspaceSize, max_uintx, JVMFlag::CONSTRAINT,
+ "Maximum size of Metaspaces (in bytes)");
+ FLAG_CONSTRAINT( MaxMetaspaceSize, (void*)MaxMetaspaceSizeConstraintFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG(size_t, CompressedClassSpaceSize, 1*G, JVMFlag::RANGE,
+ "Maximum size of class area in Metaspace when compressed "
+ "class pointers are used");
+ FLAG_RANGE( CompressedClassSpaceSize, 1*M, 3*G);
+
+PRODUCT_FLAG(uintx, MinHeapFreeRatio, 40, JVMFlag::MANAGEABLE | JVMFlag::RANGE | JVMFlag::CONSTRAINT,
+ "The minimum percentage of heap free after GC to avoid expansion."
+ " For most GCs this applies to the old generation. In G1 and"
+ " ParallelGC it applies to the whole heap.");
+ FLAG_RANGE( MinHeapFreeRatio, 0, 100);
+ FLAG_CONSTRAINT( MinHeapFreeRatio, (void*)MinHeapFreeRatioConstraintFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG(uintx, MaxHeapFreeRatio, 70, JVMFlag::MANAGEABLE | JVMFlag::RANGE | JVMFlag::CONSTRAINT,
+ "The maximum percentage of heap free after GC to avoid shrinking."
+ " For most GCs this applies to the old generation. In G1 and"
+ " ParallelGC it applies to the whole heap.");
+ FLAG_RANGE( MaxHeapFreeRatio, 0, 100);
+ FLAG_CONSTRAINT( MaxHeapFreeRatio, (void*)MaxHeapFreeRatioConstraintFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG(bool, ShrinkHeapInSteps, true, JVMFlag::DEFAULT,
+ "When disabled, informs the GC to shrink the java heap directly"
+ " to the target size at the next full GC rather than requiring"
+ " smaller steps during multiple full GCs.");
+
+PRODUCT_FLAG(intx, SoftRefLRUPolicyMSPerMB, 1000, JVMFlag::RANGE | JVMFlag::CONSTRAINT,
+ "Number of milliseconds per MB of free space in the heap");
+ FLAG_RANGE( SoftRefLRUPolicyMSPerMB, 0, max_intx);
+ FLAG_CONSTRAINT( SoftRefLRUPolicyMSPerMB, (void*)SoftRefLRUPolicyMSPerMBConstraintFunc, JVMFlag::AfterMemoryInit);
+
+PRODUCT_FLAG(size_t, MinHeapDeltaBytes, ScaleForWordSize(128*K), JVMFlag::RANGE,
+ "The minimum change in heap space due to GC (in bytes)");
+ FLAG_RANGE( MinHeapDeltaBytes, 0, max_uintx);
+
+PRODUCT_FLAG(size_t, MinMetaspaceExpansion, ScaleForWordSize(256*K), JVMFlag::RANGE,
+ "The minimum expansion of Metaspace (in bytes)");
+ FLAG_RANGE( MinMetaspaceExpansion, 0, max_uintx);
+
+PRODUCT_FLAG(uintx, MaxMetaspaceFreeRatio, 70, JVMFlag::RANGE | JVMFlag::CONSTRAINT,
+ "The maximum percentage of Metaspace free after GC to avoid "
+ "shrinking");
+ FLAG_RANGE( MaxMetaspaceFreeRatio, 0, 100);
+ FLAG_CONSTRAINT( MaxMetaspaceFreeRatio, (void*)MaxMetaspaceFreeRatioConstraintFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG(uintx, MinMetaspaceFreeRatio, 40, JVMFlag::RANGE | JVMFlag::CONSTRAINT,
+ "The minimum percentage of Metaspace free after GC to avoid "
+ "expansion");
+ FLAG_RANGE( MinMetaspaceFreeRatio, 0, 99);
+ FLAG_CONSTRAINT( MinMetaspaceFreeRatio, (void*)MinMetaspaceFreeRatioConstraintFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG(size_t, MaxMetaspaceExpansion, ScaleForWordSize(4*M), JVMFlag::RANGE,
+ "The maximum expansion of Metaspace without full GC (in bytes)");
+ FLAG_RANGE( MaxMetaspaceExpansion, 0, max_uintx);
+
+
+ // stack parameters
+PRODUCT_FLAG_PD(intx, StackYellowPages, JVMFlag::RANGE,
+ "Number of yellow zone (recoverable overflows) pages of size "
+ "4KB. If pages are bigger yellow zone is aligned up.");
+ FLAG_RANGE( StackYellowPages, MIN_STACK_YELLOW_PAGES, (DEFAULT_STACK_YELLOW_PAGES+5));
+
+PRODUCT_FLAG_PD(intx, StackRedPages, JVMFlag::RANGE,
+ "Number of red zone (unrecoverable overflows) pages of size "
+ "4KB. If pages are bigger red zone is aligned up.");
+ FLAG_RANGE( StackRedPages, MIN_STACK_RED_PAGES, (DEFAULT_STACK_RED_PAGES+2));
+
+PRODUCT_FLAG_PD(intx, StackReservedPages, JVMFlag::RANGE,
+ "Number of reserved zone (reserved to annotated methods) pages"
+ " of size 4KB. If pages are bigger reserved zone is aligned up.");
+ FLAG_RANGE( StackReservedPages, MIN_STACK_RESERVED_PAGES, (DEFAULT_STACK_RESERVED_PAGES+10));
+
+PRODUCT_FLAG(bool, RestrictReservedStack, true, JVMFlag::DEFAULT,
+ "Restrict @ReservedStackAccess to trusted classes");
+
+
+ // greater stack shadow pages can't generate instruction to bang stack
+PRODUCT_FLAG_PD(intx, StackShadowPages, JVMFlag::RANGE,
+ "Number of shadow zone (for overflow checking) pages of size "
+ "4KB. If pages are bigger shadow zone is aligned up. "
+ "This should exceed the depth of the VM and native call stack.");
+ FLAG_RANGE( StackShadowPages, MIN_STACK_SHADOW_PAGES, (DEFAULT_STACK_SHADOW_PAGES+30));
+
+PRODUCT_FLAG_PD(intx, ThreadStackSize, JVMFlag::RANGE,
+ "Thread Stack Size (in Kbytes)");
+ FLAG_RANGE( ThreadStackSize, 0, 1 * M);
+
+PRODUCT_FLAG_PD(intx, VMThreadStackSize, JVMFlag::RANGE,
+ "Non-Java Thread Stack Size (in Kbytes)");
+ FLAG_RANGE( VMThreadStackSize, 0, max_intx/(1 * K));
+
+PRODUCT_FLAG_PD(intx, CompilerThreadStackSize, JVMFlag::RANGE,
+ "Compiler Thread Stack Size (in Kbytes)");
+ FLAG_RANGE( CompilerThreadStackSize, 0, max_intx/(1 * K));
+
+DEVELOP_FLAG_PD(size_t, JVMInvokeMethodSlack, JVMFlag::DEFAULT,
+ "Stack space (bytes) required for JVM_InvokeMethod to complete");
+
+
+ // code cache parameters
+DEVELOP_FLAG_PD(uintx, CodeCacheSegmentSize, JVMFlag::RANGE | JVMFlag::CONSTRAINT,
+ "Code cache segment size (in bytes) - smallest unit of "
+ "allocation");
+ FLAG_RANGE( CodeCacheSegmentSize, 1, 1024);
+ FLAG_CONSTRAINT( CodeCacheSegmentSize, (void*)CodeCacheSegmentSizeConstraintFunc, JVMFlag::AfterErgo);
+
+DEVELOP_FLAG_PD(intx, CodeEntryAlignment, JVMFlag::CONSTRAINT,
+ "Code entry alignment for generated code (in bytes)");
+ FLAG_CONSTRAINT( CodeEntryAlignment, (void*)CodeEntryAlignmentConstraintFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG_PD(intx, OptoLoopAlignment, JVMFlag::RANGE | JVMFlag::CONSTRAINT,
+ "Align inner loops to zero relative to this modulus");
+ FLAG_RANGE( OptoLoopAlignment, 1, 16);
+ FLAG_CONSTRAINT( OptoLoopAlignment, (void*)OptoLoopAlignmentConstraintFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG_PD(uintx, InitialCodeCacheSize, JVMFlag::RANGE,
+ "Initial code cache size (in bytes)");
+ FLAG_CUSTOM_RANGE( InitialCodeCacheSize, VMPageSize);
+
+DEVELOP_FLAG_PD(uintx, CodeCacheMinimumUseSpace, JVMFlag::RANGE,
+ "Minimum code cache size (in bytes) required to start VM.");
+ FLAG_RANGE( CodeCacheMinimumUseSpace, 0, max_uintx);
+
+PRODUCT_FLAG(bool, SegmentedCodeCache, false, JVMFlag::DEFAULT,
+ "Use a segmented code cache");
+
+PRODUCT_FLAG_PD(uintx, ReservedCodeCacheSize, JVMFlag::RANGE,
+ "Reserved code cache size (in bytes) - maximum code cache size");
+ FLAG_CUSTOM_RANGE( ReservedCodeCacheSize, VMPageSize);
+
+PRODUCT_FLAG_PD(uintx, NonProfiledCodeHeapSize, JVMFlag::RANGE,
+ "Size of code heap with non-profiled methods (in bytes)");
+ FLAG_RANGE( NonProfiledCodeHeapSize, 0, max_uintx);
+
+PRODUCT_FLAG_PD(uintx, ProfiledCodeHeapSize, JVMFlag::RANGE,
+ "Size of code heap with profiled methods (in bytes)");
+ FLAG_RANGE( ProfiledCodeHeapSize, 0, max_uintx);
+
+PRODUCT_FLAG_PD(uintx, NonNMethodCodeHeapSize, JVMFlag::RANGE,
+ "Size of code heap with non-nmethods (in bytes)");
+ FLAG_CUSTOM_RANGE( NonNMethodCodeHeapSize, VMPageSize);
+
+PRODUCT_FLAG_PD(uintx, CodeCacheExpansionSize, JVMFlag::RANGE,
+ "Code cache expansion size (in bytes)");
+ FLAG_RANGE( CodeCacheExpansionSize, 32*K, max_uintx);
+
+PRODUCT_FLAG_PD(uintx, CodeCacheMinBlockLength, JVMFlag::DIAGNOSTIC | JVMFlag::RANGE,
+ "Minimum number of segments in a code cache block");
+ FLAG_RANGE( CodeCacheMinBlockLength, 1, 100);
+
+NOTPROD_FLAG(bool, ExitOnFullCodeCache, false, JVMFlag::DEFAULT,
+ "Exit the VM if we fill the code cache");
+
+PRODUCT_FLAG(bool, UseCodeCacheFlushing, true, JVMFlag::DEFAULT,
+ "Remove cold/old nmethods from the code cache");
+
+PRODUCT_FLAG(uintx, StartAggressiveSweepingAt, 10, JVMFlag::RANGE,
+ "Start aggressive sweeping if X[%] of the code cache is free."
+ "Segmented code cache: X[%] of the non-profiled heap."
+ "Non-segmented code cache: X[%] of the total code cache");
+ FLAG_RANGE( StartAggressiveSweepingAt, 0, 100);
+
+
+ // AOT parameters
+PRODUCT_FLAG(bool, UseAOT, false, JVMFlag::EXPERIMENTAL,
+ "Use AOT compiled files");
+
+PRODUCT_FLAG(ccstr, AOTLibrary, NULL, JVMFlag::EXPERIMENTAL | JVMFlag::STRINGLIST,
+ "AOT library");
+
+PRODUCT_FLAG(bool, PrintAOT, false, JVMFlag::EXPERIMENTAL,
+ "Print used AOT klasses and methods");
+
+NOTPROD_FLAG(bool, PrintAOTStatistics, false, JVMFlag::DEFAULT,
+ "Print AOT statistics");
+
+PRODUCT_FLAG(bool, UseAOTStrictLoading, false, JVMFlag::DIAGNOSTIC,
+ "Exit the VM if any of the AOT libraries has invalid config");
+
+PRODUCT_FLAG(bool, CalculateClassFingerprint, false, JVMFlag::DEFAULT,
+ "Calculate class fingerprint");
+
+
+ // interpreter debugging
+DEVELOP_FLAG(intx, BinarySwitchThreshold, 5, JVMFlag::DEFAULT,
+ "Minimal number of lookupswitch entries for rewriting to binary "
+ "switch");
+
+DEVELOP_FLAG(intx, StopInterpreterAt, 0, JVMFlag::DEFAULT,
+ "Stop interpreter execution at specified bytecode number");
+
+DEVELOP_FLAG(intx, TraceBytecodesAt, 0, JVMFlag::DEFAULT,
+ "Trace bytecodes starting with specified bytecode number");
+
+
+ // compiler interface
+DEVELOP_FLAG(intx, CIStart, 0, JVMFlag::DEFAULT,
+ "The id of the first compilation to permit");
+
+DEVELOP_FLAG(intx, CIStop, max_jint, JVMFlag::DEFAULT,
+ "The id of the last compilation to permit");
+
+DEVELOP_FLAG(intx, CIStartOSR, 0, JVMFlag::DEFAULT,
+ "The id of the first osr compilation to permit "
+ "(CICountOSR must be on)");
+
+DEVELOP_FLAG(intx, CIStopOSR, max_jint, JVMFlag::DEFAULT,
+ "The id of the last osr compilation to permit "
+ "(CICountOSR must be on)");
+
+DEVELOP_FLAG(intx, CIBreakAtOSR, -1, JVMFlag::DEFAULT,
+ "The id of osr compilation to break at");
+
+DEVELOP_FLAG(intx, CIBreakAt, -1, JVMFlag::DEFAULT,
+ "The id of compilation to break at");
+
+PRODUCT_FLAG(ccstr, CompileOnly, "", JVMFlag::STRINGLIST,
+ "List of methods (pkg/class.name) to restrict compilation to");
+
+PRODUCT_FLAG(ccstr, CompileCommandFile, NULL, JVMFlag::DEFAULT,
+ "Read compiler commands from this file [.hotspot_compiler]");
+
+PRODUCT_FLAG(ccstr, CompilerDirectivesFile, NULL, JVMFlag::DIAGNOSTIC,
+ "Read compiler directives from this file");
+
+PRODUCT_FLAG(ccstr, CompileCommand, "", JVMFlag::STRINGLIST,
+ "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>");
+
+DEVELOP_FLAG(bool, ReplayCompiles, false, JVMFlag::DEFAULT,
+ "Enable replay of compilations from ReplayDataFile");
+
+PRODUCT_FLAG(ccstr, ReplayDataFile, NULL, JVMFlag::DEFAULT,
+ "File containing compilation replay information"
+ "[default: ./replay_pid%p.log] (%p replaced with pid)");
+
+PRODUCT_FLAG(ccstr, InlineDataFile, NULL, JVMFlag::DEFAULT,
+ "File containing inlining replay information"
+ "[default: ./inline_pid%p.log] (%p replaced with pid)");
+
+DEVELOP_FLAG(intx, ReplaySuppressInitializers, 2, JVMFlag::RANGE,
+ "Control handling of class initialization during replay: "
+ "0 - don't do anything special; "
+ "1 - treat all class initializers as empty; "
+ "2 - treat class initializers for application classes as empty; "
+ "3 - allow all class initializers to run during bootstrap but "
+ " pretend they are empty after starting replay");
+ FLAG_RANGE( ReplaySuppressInitializers, 0, 3);
+
+DEVELOP_FLAG(bool, ReplayIgnoreInitErrors, false, JVMFlag::DEFAULT,
+ "Ignore exceptions thrown during initialization for replay");
+
+PRODUCT_FLAG(bool, DumpReplayDataOnError, true, JVMFlag::DEFAULT,
+ "Record replay data for crashing compiler threads");
+
+PRODUCT_FLAG(bool, CICompilerCountPerCPU, false, JVMFlag::DEFAULT,
+ "1 compiler thread for log(N CPUs)");
+
+NOTPROD_FLAG(intx, CICrashAt, -1, JVMFlag::DEFAULT,
+ "id of compilation to trigger assert in compiler thread for "
+ "the purpose of testing, e.g. generation of replay data");
+
+NOTPROD_FLAG(bool, CIObjectFactoryVerify, false, JVMFlag::DEFAULT,
+ "enable potentially expensive verification in ciObjectFactory");
+
+PRODUCT_FLAG(bool, AbortVMOnCompilationFailure, false, JVMFlag::DIAGNOSTIC,
+ "Abort VM when method had failed to compile.");
+
+
+ // Priorities
+PRODUCT_FLAG_PD(bool, UseThreadPriorities, JVMFlag::DEFAULT,
+ "Use native thread priorities");
+
+PRODUCT_FLAG(intx, ThreadPriorityPolicy, 0, JVMFlag::RANGE,
+ "0 : Normal. "
+ " VM chooses priorities that are appropriate for normal "
+ " applications. On Solaris NORM_PRIORITY and above are mapped "
+ " to normal native priority. Java priorities below "
+ " NORM_PRIORITY map to lower native priority values. On "
+ " Windows applications are allowed to use higher native "
+ " priorities. However, with ThreadPriorityPolicy=0, VM will "
+ " not use the highest possible native priority, "
+ " THREAD_PRIORITY_TIME_CRITICAL, as it may interfere with "
+ " system threads. On Linux thread priorities are ignored "
+ " because the OS does not support static priority in "
+ " SCHED_OTHER scheduling class which is the only choice for "
+ " non-root, non-realtime applications. "
+ "1 : Aggressive. "
+ " Java thread priorities map over to the entire range of "
+ " native thread priorities. Higher Java thread priorities map "
+ " to higher native thread priorities. This policy should be "
+ " used with care, as sometimes it can cause performance "
+ " degradation in the application and/or the entire system. On "
+ " Linux/BSD/macOS this policy requires root privilege or an "
+ " extended capability.");
+ FLAG_RANGE( ThreadPriorityPolicy, 0, 1);
+
+PRODUCT_FLAG(bool, ThreadPriorityVerbose, false, JVMFlag::DEFAULT,
+ "Print priority changes");
+
+PRODUCT_FLAG(intx, CompilerThreadPriority, -1, JVMFlag::RANGE | JVMFlag::CONSTRAINT,
+ "The native priority at which compiler threads should run "
+ "(-1 means no change)");
+ FLAG_RANGE( CompilerThreadPriority, min_jint, max_jint);
+ FLAG_CONSTRAINT( CompilerThreadPriority, (void*)CompilerThreadPriorityConstraintFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG(intx, VMThreadPriority, -1, JVMFlag::RANGE,
+ "The native priority at which the VM thread should run "
+ "(-1 means no change)");
+ FLAG_RANGE( VMThreadPriority, -1, 127);
+
+PRODUCT_FLAG(intx, JavaPriority1_To_OSPriority, -1, JVMFlag::RANGE,
+ "Map Java priorities to OS priorities");
+ FLAG_RANGE( JavaPriority1_To_OSPriority, -1, 127);
+
+PRODUCT_FLAG(intx, JavaPriority2_To_OSPriority, -1, JVMFlag::RANGE,
+ "Map Java priorities to OS priorities");
+ FLAG_RANGE( JavaPriority2_To_OSPriority, -1, 127);
+
+PRODUCT_FLAG(intx, JavaPriority3_To_OSPriority, -1, JVMFlag::RANGE,
+ "Map Java priorities to OS priorities");
+ FLAG_RANGE( JavaPriority3_To_OSPriority, -1, 127);
+
+PRODUCT_FLAG(intx, JavaPriority4_To_OSPriority, -1, JVMFlag::RANGE,
+ "Map Java priorities to OS priorities");
+ FLAG_RANGE( JavaPriority4_To_OSPriority, -1, 127);
+
+PRODUCT_FLAG(intx, JavaPriority5_To_OSPriority, -1, JVMFlag::RANGE,
+ "Map Java priorities to OS priorities");
+ FLAG_RANGE( JavaPriority5_To_OSPriority, -1, 127);
+
+PRODUCT_FLAG(intx, JavaPriority6_To_OSPriority, -1, JVMFlag::RANGE,
+ "Map Java priorities to OS priorities");
+ FLAG_RANGE( JavaPriority6_To_OSPriority, -1, 127);
+
+PRODUCT_FLAG(intx, JavaPriority7_To_OSPriority, -1, JVMFlag::RANGE,
+ "Map Java priorities to OS priorities");
+ FLAG_RANGE( JavaPriority7_To_OSPriority, -1, 127);
+
+PRODUCT_FLAG(intx, JavaPriority8_To_OSPriority, -1, JVMFlag::RANGE,
+ "Map Java priorities to OS priorities");
+ FLAG_RANGE( JavaPriority8_To_OSPriority, -1, 127);
+
+PRODUCT_FLAG(intx, JavaPriority9_To_OSPriority, -1, JVMFlag::RANGE,
+ "Map Java priorities to OS priorities");
+ FLAG_RANGE( JavaPriority9_To_OSPriority, -1, 127);
+
+PRODUCT_FLAG(intx, JavaPriority10_To_OSPriority, -1, JVMFlag::RANGE,
+ "Map Java priorities to OS priorities");
+ FLAG_RANGE( JavaPriority10_To_OSPriority, -1, 127);
+
+PRODUCT_FLAG(bool, UseCriticalJavaThreadPriority, false, JVMFlag::EXPERIMENTAL,
+ "Java thread priority 10 maps to critical scheduling priority");
+
+PRODUCT_FLAG(bool, UseCriticalCompilerThreadPriority, false, JVMFlag::EXPERIMENTAL,
+ "Compiler thread(s) run at critical scheduling priority");
+
+DEVELOP_FLAG(intx, NewCodeParameter, 0, JVMFlag::DEFAULT,
+ "Testing Only: Create a dedicated integer parameter before "
+ "putback");
+
+
+ // new oopmap storage allocation
+DEVELOP_FLAG(intx, MinOopMapAllocation, 8, JVMFlag::DEFAULT,
+ "Minimum number of OopMap entries in an OopMapSet");
+
+
+ // Background Compilation
+DEVELOP_FLAG(intx, LongCompileThreshold, 50, JVMFlag::DEFAULT,
+ "Used with +TraceLongCompiles");
+
+
+ // recompilation
+PRODUCT_FLAG_PD(intx, CompileThreshold, JVMFlag::CONSTRAINT,
+ "number of interpreted method invocations before (re-)compiling");
+ FLAG_CONSTRAINT( CompileThreshold, (void*)CompileThresholdConstraintFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG(double, CompileThresholdScaling, 1.0, JVMFlag::RANGE,
+ "Factor to control when first compilation happens "
+ "(both with and without tiered compilation): "
+ "values greater than 1.0 delay counter overflow, "
+ "values between 0 and 1.0 rush counter overflow, "
+ "value of 1.0 leaves compilation thresholds unchanged "
+ "value of 0.0 is equivalent to -Xint. "
+ ""
+ "Flag can be set as per-method option. "
+ "If a value is specified for a method, compilation thresholds "
+ "for that method are scaled by both the value of the global flag "
+ "and the value of the per-method flag.");
+ FLAG_RANGE( CompileThresholdScaling, 0.0, DBL_MAX);
+
+PRODUCT_FLAG(intx, Tier0InvokeNotifyFreqLog, 7, JVMFlag::RANGE,
+ "Interpreter (tier 0) invocation notification frequency");
+ FLAG_RANGE( Tier0InvokeNotifyFreqLog, 0, 30);
+
+PRODUCT_FLAG(intx, Tier2InvokeNotifyFreqLog, 11, JVMFlag::RANGE,
+ "C1 without MDO (tier 2) invocation notification frequency");
+ FLAG_RANGE( Tier2InvokeNotifyFreqLog, 0, 30);
+
+PRODUCT_FLAG(intx, Tier3InvokeNotifyFreqLog, 10, JVMFlag::RANGE,
+ "C1 with MDO profiling (tier 3) invocation notification "
+ "frequency");
+ FLAG_RANGE( Tier3InvokeNotifyFreqLog, 0, 30);
+
+PRODUCT_FLAG(intx, Tier23InlineeNotifyFreqLog, 20, JVMFlag::RANGE,
+ "Inlinee invocation (tiers 2 and 3) notification frequency");
+ FLAG_RANGE( Tier23InlineeNotifyFreqLog, 0, 30);
+
+PRODUCT_FLAG(intx, Tier0BackedgeNotifyFreqLog, 10, JVMFlag::RANGE,
+ "Interpreter (tier 0) invocation notification frequency");
+ FLAG_RANGE( Tier0BackedgeNotifyFreqLog, 0, 30);
+
+PRODUCT_FLAG(intx, Tier2BackedgeNotifyFreqLog, 14, JVMFlag::RANGE,
+ "C1 without MDO (tier 2) invocation notification frequency");
+ FLAG_RANGE( Tier2BackedgeNotifyFreqLog, 0, 30);
+
+PRODUCT_FLAG(intx, Tier3BackedgeNotifyFreqLog, 13, JVMFlag::RANGE,
+ "C1 with MDO profiling (tier 3) invocation notification "
+ "frequency");
+ FLAG_RANGE( Tier3BackedgeNotifyFreqLog, 0, 30);
+
+PRODUCT_FLAG(intx, Tier2CompileThreshold, 0, JVMFlag::RANGE,
+ "threshold at which tier 2 compilation is invoked");
+ FLAG_RANGE( Tier2CompileThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier2BackEdgeThreshold, 0, JVMFlag::RANGE,
+ "Back edge threshold at which tier 2 compilation is invoked");
+ FLAG_RANGE( Tier2BackEdgeThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier3InvocationThreshold, 200, JVMFlag::RANGE,
+ "Compile if number of method invocations crosses this "
+ "threshold");
+ FLAG_RANGE( Tier3InvocationThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier3MinInvocationThreshold, 100, JVMFlag::RANGE,
+ "Minimum invocation to compile at tier 3");
+ FLAG_RANGE( Tier3MinInvocationThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier3CompileThreshold, 2000, JVMFlag::RANGE,
+ "Threshold at which tier 3 compilation is invoked (invocation "
+ "minimum must be satisfied)");
+ FLAG_RANGE( Tier3CompileThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier3BackEdgeThreshold, 60000, JVMFlag::RANGE,
+ "Back edge threshold at which tier 3 OSR compilation is invoked");
+ FLAG_RANGE( Tier3BackEdgeThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier3AOTInvocationThreshold, 10000, JVMFlag::RANGE,
+ "Compile if number of method invocations crosses this "
+ "threshold if coming from AOT");
+ FLAG_RANGE( Tier3AOTInvocationThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier3AOTMinInvocationThreshold, 1000, JVMFlag::RANGE,
+ "Minimum invocation to compile at tier 3 if coming from AOT");
+ FLAG_RANGE( Tier3AOTMinInvocationThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier3AOTCompileThreshold, 15000, JVMFlag::RANGE,
+ "Threshold at which tier 3 compilation is invoked (invocation "
+ "minimum must be satisfied) if coming from AOT");
+ FLAG_RANGE( Tier3AOTCompileThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier3AOTBackEdgeThreshold, 120000, JVMFlag::RANGE,
+ "Back edge threshold at which tier 3 OSR compilation is invoked "
+ "if coming from AOT");
+ FLAG_RANGE( Tier3AOTBackEdgeThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier0AOTInvocationThreshold, 200, JVMFlag::DIAGNOSTIC | JVMFlag::RANGE,
+ "Switch to interpreter to profile if the number of method "
+ "invocations crosses this threshold if coming from AOT "
+ "(applicable only with "
+ "CompilationMode=high-only|high-only-quick-internal)");
+ FLAG_RANGE( Tier0AOTInvocationThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier0AOTMinInvocationThreshold, 100, JVMFlag::DIAGNOSTIC | JVMFlag::RANGE,
+ "Minimum number of invocations to switch to interpreter "
+ "to profile if coming from AOT "
+ "(applicable only with "
+ "CompilationMode=high-only|high-only-quick-internal)");
+ FLAG_RANGE( Tier0AOTMinInvocationThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier0AOTCompileThreshold, 2000, JVMFlag::DIAGNOSTIC | JVMFlag::RANGE,
+ "Threshold at which to switch to interpreter to profile "
+ "if coming from AOT "
+ "(invocation minimum must be satisfied, "
+ "applicable only with "
+ "CompilationMode=high-only|high-only-quick-internal)");
+ FLAG_RANGE( Tier0AOTCompileThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier0AOTBackEdgeThreshold, 60000, JVMFlag::DIAGNOSTIC | JVMFlag::RANGE,
+ "Back edge threshold at which to switch to interpreter "
+ "to profile if coming from AOT "
+ "(applicable only with "
+ "CompilationMode=high-only|high-only-quick-internal)");
+ FLAG_RANGE( Tier0AOTBackEdgeThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier4InvocationThreshold, 5000, JVMFlag::RANGE,
+ "Compile if number of method invocations crosses this "
+ "threshold");
+ FLAG_RANGE( Tier4InvocationThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier4MinInvocationThreshold, 600, JVMFlag::RANGE,
+ "Minimum invocation to compile at tier 4");
+ FLAG_RANGE( Tier4MinInvocationThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier4CompileThreshold, 15000, JVMFlag::RANGE,
+ "Threshold at which tier 4 compilation is invoked (invocation "
+ "minimum must be satisfied)");
+ FLAG_RANGE( Tier4CompileThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier4BackEdgeThreshold, 40000, JVMFlag::RANGE,
+ "Back edge threshold at which tier 4 OSR compilation is invoked");
+ FLAG_RANGE( Tier4BackEdgeThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier40InvocationThreshold, 5000, JVMFlag::DIAGNOSTIC | JVMFlag::RANGE,
+ "Compile if number of method invocations crosses this "
+ "threshold (applicable only with "
+ "CompilationMode=high-only|high-only-quick-internal)");
+ FLAG_RANGE( Tier40InvocationThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier40MinInvocationThreshold, 600, JVMFlag::DIAGNOSTIC | JVMFlag::RANGE,
+ "Minimum number of invocations to compile at tier 4 "
+ "(applicable only with "
+ "CompilationMode=high-only|high-only-quick-internal)");
+ FLAG_RANGE( Tier40MinInvocationThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier40CompileThreshold, 10000, JVMFlag::DIAGNOSTIC | JVMFlag::RANGE,
+ "Threshold at which tier 4 compilation is invoked (invocation "
+ "minimum must be satisfied, applicable only with "
+ "CompilationMode=high-only|high-only-quick-internal)");
+ FLAG_RANGE( Tier40CompileThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier40BackEdgeThreshold, 15000, JVMFlag::DIAGNOSTIC | JVMFlag::RANGE,
+ "Back edge threshold at which tier 4 OSR compilation is invoked "
+ "(applicable only with "
+ "CompilationMode=high-only|high-only-quick-internal)");
+ FLAG_RANGE( Tier40BackEdgeThreshold, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier0Delay, 5, JVMFlag::DIAGNOSTIC | JVMFlag::RANGE,
+ "If C2 queue size grows over this amount per compiler thread "
+ "do not start profiling in the interpreter "
+ "(applicable only with "
+ "CompilationMode=high-only|high-only-quick-internal)");
+ FLAG_RANGE( Tier0Delay, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier3DelayOn, 5, JVMFlag::RANGE,
+ "If C2 queue size grows over this amount per compiler thread "
+ "stop compiling at tier 3 and start compiling at tier 2");
+ FLAG_RANGE( Tier3DelayOn, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier3DelayOff, 2, JVMFlag::RANGE,
+ "If C2 queue size is less than this amount per compiler thread "
+ "allow methods compiled at tier 2 transition to tier 3");
+ FLAG_RANGE( Tier3DelayOff, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier3LoadFeedback, 5, JVMFlag::RANGE,
+ "Tier 3 thresholds will increase twofold when C1 queue size "
+ "reaches this amount per compiler thread");
+ FLAG_RANGE( Tier3LoadFeedback, 0, max_jint);
+
+PRODUCT_FLAG(intx, Tier4LoadFeedback, 3, JVMFlag::RANGE,
+ "Tier 4 thresholds will increase twofold when C2 queue size "
+ "reaches this amount per compiler thread");
+ FLAG_RANGE( Tier4LoadFeedback, 0, max_jint);
+
+PRODUCT_FLAG(intx, TieredCompileTaskTimeout, 50, JVMFlag::RANGE,
+ "Kill compile task if method was not used within "
+ "given timeout in milliseconds");
+ FLAG_RANGE( TieredCompileTaskTimeout, 0, max_intx);
+
+PRODUCT_FLAG(intx, TieredStopAtLevel, 4, JVMFlag::RANGE,
+ "Stop at given compilation level");
+ FLAG_RANGE( TieredStopAtLevel, 0, 4);
+
+PRODUCT_FLAG(intx, Tier0ProfilingStartPercentage, 200, JVMFlag::RANGE,
+ "Start profiling in interpreter if the counters exceed tier 3 "
+ "thresholds (tier 4 thresholds with "
+ "CompilationMode=high-only|high-only-quick-internal)"
+ "by the specified percentage");
+ FLAG_RANGE( Tier0ProfilingStartPercentage, 0, max_jint);
+
+PRODUCT_FLAG(uintx, IncreaseFirstTierCompileThresholdAt, 50, JVMFlag::RANGE,
+ "Increase the compile threshold for C1 compilation if the code "
+ "cache is filled by the specified percentage");
+ FLAG_RANGE( IncreaseFirstTierCompileThresholdAt, 0, 99);
+
+PRODUCT_FLAG(intx, TieredRateUpdateMinTime, 1, JVMFlag::RANGE,
+ "Minimum rate sampling interval (in milliseconds)");
+ FLAG_RANGE( TieredRateUpdateMinTime, 0, max_intx);
+
+PRODUCT_FLAG(intx, TieredRateUpdateMaxTime, 25, JVMFlag::RANGE,
+ "Maximum rate sampling interval (in milliseconds)");
+ FLAG_RANGE( TieredRateUpdateMaxTime, 0, max_intx);
+
+PRODUCT_FLAG(ccstr, CompilationMode, "default", JVMFlag::DEFAULT,
+ "Compilation modes: "
+ "default: normal tiered compilation; "
+ "quick-only: C1-only mode; "
+ "high-only: C2/JVMCI-only mode; "
+ "high-only-quick-internal: C2/JVMCI-only mode, "
+ "with JVMCI compiler compiled with C1.");
+
+PRODUCT_FLAG_PD(bool, TieredCompilation, JVMFlag::DEFAULT,
+ "Enable tiered compilation");
+
+PRODUCT_FLAG(bool, PrintTieredEvents, false, JVMFlag::DEFAULT,
+ "Print tiered events notifications");
+
+PRODUCT_FLAG_PD(intx, OnStackReplacePercentage, JVMFlag::CONSTRAINT,
+ "NON_TIERED number of method invocations/branches (expressed as "
+ "% of CompileThreshold) before (re-)compiling OSR code");
+ FLAG_CONSTRAINT( OnStackReplacePercentage, (void*)OnStackReplacePercentageConstraintFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG(intx, InterpreterProfilePercentage, 33, JVMFlag::RANGE,
+ "NON_TIERED number of method invocations/branches (expressed as "
+ "% of CompileThreshold) before profiling in the interpreter");
+ FLAG_RANGE( InterpreterProfilePercentage, 0, 100);
+
+DEVELOP_FLAG(intx, DesiredMethodLimit, 8000, JVMFlag::DEFAULT,
+ "The desired maximum method size (in bytecodes) after inlining");
+
+DEVELOP_FLAG(intx, HugeMethodLimit, 8000, JVMFlag::DEFAULT,
+ "Don't compile methods larger than this if "
+ "+DontCompileHugeMethods");
+
+
+ // Properties for Java libraries
+PRODUCT_FLAG(uint64_t, MaxDirectMemorySize, 0, JVMFlag::RANGE,
+ "Maximum total size of NIO direct-buffer allocations");
+ FLAG_RANGE( MaxDirectMemorySize, 0, max_jlong);
+
+
+ // Flags used for temporary code during development
+PRODUCT_FLAG(bool, UseNewCode, false, JVMFlag::DIAGNOSTIC,
+ "Testing Only: Use the new version while testing");
+
+PRODUCT_FLAG(bool, UseNewCode2, false, JVMFlag::DIAGNOSTIC,
+ "Testing Only: Use the new version while testing");
+
+PRODUCT_FLAG(bool, UseNewCode3, false, JVMFlag::DIAGNOSTIC,
+ "Testing Only: Use the new version while testing");
+
+
+ // flags for performance data collection
+PRODUCT_FLAG(bool, UsePerfData, true, JVMFlag::DEFAULT,
+ "Flag to disable jvmstat instrumentation for performance testing "
+ "and problem isolation purposes");
+
+PRODUCT_FLAG(bool, PerfDataSaveToFile, false, JVMFlag::DEFAULT,
+ "Save PerfData memory to hsperfdata_<pid> file on exit");
+
+PRODUCT_FLAG(ccstr, PerfDataSaveFile, NULL, JVMFlag::DEFAULT,
+ "Save PerfData memory to the specified absolute pathname. "
+ "The string %p in the file name (if present) "
+ "will be replaced by pid");
+
+PRODUCT_FLAG(intx, PerfDataSamplingInterval, 50, JVMFlag::RANGE | JVMFlag::CONSTRAINT,
+ "Data sampling interval (in milliseconds)");
+ //TODO: to avoid circular dependency, the min/max cannot be declared in header file
+ //FLAG_RANGE( PerfDataSamplingInterval, PeriodicTask::min_interval, max_jint);
+ FLAG_CONSTRAINT( PerfDataSamplingInterval, (void*)PerfDataSamplingIntervalFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG(bool, PerfDisableSharedMem, false, JVMFlag::DEFAULT,
+ "Store performance data in standard memory");
+
+PRODUCT_FLAG(intx, PerfDataMemorySize, 32*K, JVMFlag::RANGE,
+ "Size of performance data memory region. Will be rounded "
+ "up to a multiple of the native os page size.");
+ FLAG_RANGE( PerfDataMemorySize, 128, 32*64*K);
+
+PRODUCT_FLAG(intx, PerfMaxStringConstLength, 1024, JVMFlag::RANGE,
+ "Maximum PerfStringConstant string length before truncation");
+ FLAG_RANGE( PerfMaxStringConstLength, 32, 32*K);
+
+PRODUCT_FLAG(bool, PerfAllowAtExitRegistration, false, JVMFlag::DEFAULT,
+ "Allow registration of atexit() methods");
+
+PRODUCT_FLAG(bool, PerfBypassFileSystemCheck, false, JVMFlag::DEFAULT,
+ "Bypass Win32 file system criteria checks (Windows Only)");
+
+PRODUCT_FLAG(intx, UnguardOnExecutionViolation, 0, JVMFlag::RANGE,
+ "Unguard page and retry on no-execute fault (Win32 only) "
+ "0=off, 1=conservative, 2=aggressive");
+ FLAG_RANGE( UnguardOnExecutionViolation, 0, 2);
+
+
+ // Serviceability Support
+PRODUCT_FLAG(bool, ManagementServer, false, JVMFlag::DEFAULT,
+ "Create JMX Management Server");
+
+PRODUCT_FLAG(bool, DisableAttachMechanism, false, JVMFlag::DEFAULT,
+ "Disable mechanism that allows tools to attach to this VM");
+
+PRODUCT_FLAG(bool, StartAttachListener, false, JVMFlag::DEFAULT,
+ "Always start Attach Listener at VM startup");
+
+PRODUCT_FLAG(bool, EnableDynamicAgentLoading, true, JVMFlag::DEFAULT,
+ "Allow tools to load agents with the attach mechanism");
+
+PRODUCT_FLAG(bool, PrintConcurrentLocks, false, JVMFlag::MANAGEABLE,
+ "Print java.util.concurrent locks in thread dump");
+
+
+ // Shared spaces
+PRODUCT_FLAG(bool, UseSharedSpaces, true, JVMFlag::DEFAULT,
+ "Use shared spaces for metadata");
+
+PRODUCT_FLAG(bool, VerifySharedSpaces, false, JVMFlag::DEFAULT,
+ "Verify integrity of shared spaces");
+
+PRODUCT_FLAG(bool, RequireSharedSpaces, false, JVMFlag::DEFAULT,
+ "Require shared spaces for metadata");
+
+PRODUCT_FLAG(bool, DumpSharedSpaces, false, JVMFlag::DEFAULT,
+ "Special mode: JVM reads a class list, loads classes, builds "
+ "shared spaces, and dumps the shared spaces to a file to be "
+ "used in future JVM runs");
+
+PRODUCT_FLAG(bool, DynamicDumpSharedSpaces, false, JVMFlag::DEFAULT,
+ "Dynamic archive");
+
+PRODUCT_FLAG(bool, PrintSharedArchiveAndExit, false, JVMFlag::DEFAULT,
+ "Print shared archive file contents");
+
+PRODUCT_FLAG(bool, PrintSharedDictionary, false, JVMFlag::DEFAULT,
+ "If PrintSharedArchiveAndExit is true, also print the shared "
+ "dictionary");
+
+PRODUCT_FLAG(size_t, SharedBaseAddress, LP64_ONLY(32*G)NOT_LP64(LINUX_ONLY(2*G) NOT_LINUX(0)), JVMFlag::RANGE,
+ "Address to allocate shared memory region for class data");
+ FLAG_RANGE( SharedBaseAddress, 0, SIZE_MAX);
+
+PRODUCT_FLAG(ccstr, SharedArchiveConfigFile, NULL, JVMFlag::DEFAULT,
+ "Data to add to the CDS archive file");
+
+PRODUCT_FLAG(uintx, SharedSymbolTableBucketSize, 4, JVMFlag::RANGE,
+ "Average number of symbols per bucket in shared table");
+ FLAG_RANGE( SharedSymbolTableBucketSize, 2, 246);
+
+PRODUCT_FLAG(bool, AllowArchivingWithJavaAgent, false, JVMFlag::DIAGNOSTIC,
+ "Allow Java agent to be run with CDS dumping");
+
+PRODUCT_FLAG(bool, PrintMethodHandleStubs, false, JVMFlag::DIAGNOSTIC,
+ "Print generated stub code for method handles");
+
+DEVELOP_FLAG(bool, TraceMethodHandles, false, JVMFlag::DEFAULT,
+ "trace internal method handle operations");
+
+PRODUCT_FLAG(bool, VerifyMethodHandles, trueInDebug, JVMFlag::DIAGNOSTIC,
+ "perform extra checks when constructing method handles");
+
+PRODUCT_FLAG(bool, ShowHiddenFrames, false, JVMFlag::DIAGNOSTIC,
+ "show method handle implementation frames (usually hidden)");
+
+PRODUCT_FLAG(bool, TrustFinalNonStaticFields, false, JVMFlag::EXPERIMENTAL,
+ "trust final non-static declarations for constant folding");
+
+PRODUCT_FLAG(bool, FoldStableValues, true, JVMFlag::DIAGNOSTIC,
+ "Optimize loads from stable fields (marked w/ @Stable)");
+
+DEVELOP_FLAG(bool, TraceInvokeDynamic, false, JVMFlag::DEFAULT,
+ "trace internal invoke dynamic operations");
+
+PRODUCT_FLAG(int, UseBootstrapCallInfo, 1, JVMFlag::DIAGNOSTIC,
+ "0: when resolving InDy or ConDy, force all BSM arguments to be "
+ "resolved before the bootstrap method is called; 1: when a BSM "
+ "that may accept a BootstrapCallInfo is detected, use that API "
+ "to pass BSM arguments, which allows the BSM to delay their "
+ "resolution; 2+: stress test the BCI API by calling more BSMs "
+ "via that API, instead of with the eagerly-resolved array.");
+
+PRODUCT_FLAG(bool, PauseAtStartup, false, JVMFlag::DIAGNOSTIC,
+ "Causes the VM to pause at startup time and wait for the pause "
+ "file to be removed (default: ./vm.paused.<pid>)");
+
+PRODUCT_FLAG(ccstr, PauseAtStartupFile, NULL, JVMFlag::DIAGNOSTIC,
+ "The file to create and for whose removal to await when pausing "
+ "at startup. (default: ./vm.paused.<pid>)");
+
+PRODUCT_FLAG(bool, PauseAtExit, false, JVMFlag::DIAGNOSTIC,
+ "Pause and wait for keypress on exit if a debugger is attached");
+
+PRODUCT_FLAG(bool, ExtendedDTraceProbes, false, JVMFlag::DEFAULT,
+ "Enable performance-impacting dtrace probes");
+
+PRODUCT_FLAG(bool, DTraceMethodProbes, false, JVMFlag::DEFAULT,
+ "Enable dtrace probes for method-entry and method-exit");
+
+PRODUCT_FLAG(bool, DTraceAllocProbes, false, JVMFlag::DEFAULT,
+ "Enable dtrace probes for object allocation");
+
+PRODUCT_FLAG(bool, DTraceMonitorProbes, false, JVMFlag::DEFAULT,
+ "Enable dtrace probes for monitor events");
+
+PRODUCT_FLAG(bool, RelaxAccessControlCheck, false, JVMFlag::DEFAULT,
+ "Relax the access control checks in the verifier");
+
+PRODUCT_FLAG(uintx, StringTableSize, defaultStringTableSize, JVMFlag::RANGE,
+ "Number of buckets in the interned String table "
+ "(will be rounded to nearest higher power of 2)");
+ FLAG_RANGE( StringTableSize, minimumStringTableSize, 16777216ul);
+
+PRODUCT_FLAG(uintx, SymbolTableSize, defaultSymbolTableSize, JVMFlag::EXPERIMENTAL | JVMFlag::RANGE,
+ "Number of buckets in the JVM internal Symbol table");
+ FLAG_RANGE( SymbolTableSize, minimumSymbolTableSize, 16777216ul);
+
+PRODUCT_FLAG(bool, UseStringDeduplication, false, JVMFlag::DEFAULT,
+ "Use string deduplication");
+
+PRODUCT_FLAG(uintx, StringDeduplicationAgeThreshold, 3, JVMFlag::RANGE,
+ "A string must reach this age (or be promoted to an old region) "
+ "to be considered for deduplication");
+ //TODO: to avoid circular dependency, the min/max cannot be declared in header file
+ //FLAG_RANGE( StringDeduplicationAgeThreshold, 1, markWord::max_age);
+
+PRODUCT_FLAG(bool, StringDeduplicationResizeALot, false, JVMFlag::DIAGNOSTIC,
+ "Force table resize every time the table is scanned");
+
+PRODUCT_FLAG(bool, StringDeduplicationRehashALot, false, JVMFlag::DIAGNOSTIC,
+ "Force table rehash every time the table is scanned");
+
+PRODUCT_FLAG(bool, WhiteBoxAPI, false, JVMFlag::DIAGNOSTIC,
+ "Enable internal testing APIs");
+
+PRODUCT_FLAG(intx, SurvivorAlignmentInBytes, 0, JVMFlag::EXPERIMENTAL | JVMFlag::RANGE | JVMFlag::CONSTRAINT,
+ "Default survivor space alignment in bytes");
+ FLAG_RANGE( SurvivorAlignmentInBytes, 8, 256);
+ FLAG_CONSTRAINT( SurvivorAlignmentInBytes, (void*)SurvivorAlignmentInBytesConstraintFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG(ccstr, DumpLoadedClassList, NULL, JVMFlag::DEFAULT,
+ "Dump the names all loaded classes, that could be stored into "
+ "the CDS archive, in the specified file");
+
+PRODUCT_FLAG(ccstr, SharedClassListFile, NULL, JVMFlag::DEFAULT,
+ "Override the default CDS class list");
+
+PRODUCT_FLAG(ccstr, SharedArchiveFile, NULL, JVMFlag::DEFAULT,
+ "Override the default location of the CDS archive file");
+
+PRODUCT_FLAG(ccstr, ArchiveClassesAtExit, NULL, JVMFlag::DEFAULT,
+ "The path and name of the dynamic archive file");
+
+PRODUCT_FLAG(ccstr, ExtraSharedClassListFile, NULL, JVMFlag::DEFAULT,
+ "Extra classlist for building the CDS archive file");
+
+PRODUCT_FLAG(intx, ArchiveRelocationMode, 0, JVMFlag::DIAGNOSTIC | JVMFlag::RANGE,
+ "(0) first map at preferred address, and if "
+ "unsuccessful, map at alternative address (default); "
+ "(1) always map at alternative address; "
+ "(2) always map at preferred address, and if unsuccessful, "
+ "do not map the archive");
+ FLAG_RANGE( ArchiveRelocationMode, 0, 2);
+
+PRODUCT_FLAG(size_t, ArrayAllocatorMallocLimit, SOLARIS_ONLY(64*K) NOT_SOLARIS((size_t)-1), JVMFlag::EXPERIMENTAL,
+ "Allocation less than this value will be allocated "
+ "using malloc. Larger allocations will use mmap.");
+
+PRODUCT_FLAG(bool, AlwaysAtomicAccesses, false, JVMFlag::EXPERIMENTAL,
+ "Accesses to all variables should always be atomic");
+
+PRODUCT_FLAG(bool, UseUnalignedAccesses, false, JVMFlag::DIAGNOSTIC,
+ "Use unaligned memory accesses in Unsafe");
+
+PRODUCT_FLAG_PD(bool, PreserveFramePointer, JVMFlag::DEFAULT,
+ "Use the FP register for holding the frame pointer "
+ "and not as a general purpose register.");
+
+PRODUCT_FLAG(bool, CheckIntrinsics, true, JVMFlag::DIAGNOSTIC,
+ "When a class C is loaded, check that "
+ "(1) all intrinsics defined by the VM for class C are present "
+ "in the loaded class file and are marked with the "
+ "@HotSpotIntrinsicCandidate annotation, that "
+ "(2) there is an intrinsic registered for all loaded methods "
+ "that are annotated with the @HotSpotIntrinsicCandidate "
+ "annotation, and that "
+ "(3) no orphan methods exist for class C (i.e., methods for "
+ "which the VM declares an intrinsic but that are not declared "
+ "in the loaded class C. "
+ "Check (3) is available only in debug builds.");
+
+PRODUCT_FLAG_PD(intx, InitArrayShortSize, JVMFlag::DIAGNOSTIC | JVMFlag::RANGE | JVMFlag::CONSTRAINT,
+ "Threshold small size (in bytes) for clearing arrays. "
+ "Anything this size or smaller may get converted to discrete "
+ "scalar stores.");
+ FLAG_RANGE( InitArrayShortSize, 0, max_intx);
+ FLAG_CONSTRAINT( InitArrayShortSize, (void*)InitArrayShortSizeConstraintFunc, JVMFlag::AfterErgo);
+
+PRODUCT_FLAG(bool, CompilerDirectivesIgnoreCompileCommands, false, JVMFlag::DIAGNOSTIC,
+ "Disable backwards compatibility for compile commands.");
+
+PRODUCT_FLAG(bool, CompilerDirectivesPrint, false, JVMFlag::DIAGNOSTIC,
+ "Print compiler directives on installation.");
+
+PRODUCT_FLAG(int, CompilerDirectivesLimit, 50, JVMFlag::DIAGNOSTIC,
+ "Limit on number of compiler directives.");
+
+PRODUCT_FLAG(ccstr, AllocateHeapAt, NULL, JVMFlag::DEFAULT,
+ "Path to the directoy where a temporary file will be created "
+ "to use as the backing store for Java Heap.");
+
+PRODUCT_FLAG(ccstr, AllocateOldGenAt, NULL, JVMFlag::EXPERIMENTAL,
+ "Path to the directoy where a temporary file will be "
+ "created to use as the backing store for old generation."
+ "File of size Xmx is pre-allocated for performance reason, so"
+ "we need that much space available");
+
+DEVELOP_FLAG(int, VerifyMetaspaceInterval, DEBUG_ONLY(500) NOT_DEBUG(0), JVMFlag::DEFAULT,
+ "Run periodic metaspace verifications (0 - none, "
+ "1 - always, >1 every nth interval)");
+
+PRODUCT_FLAG(bool, ShowRegistersOnAssert, true, JVMFlag::DIAGNOSTIC,
+ "On internal errors, include registers in error report.");
+
+PRODUCT_FLAG(bool, UseSwitchProfiling, true, JVMFlag::DIAGNOSTIC,
+ "leverage profiling for table/lookup switch");
+
+DEVELOP_FLAG(bool, TraceMemoryWriteback, false, JVMFlag::DEFAULT,
+ "Trace memory writeback operations");
+
+JFR_ONLY(PRODUCT_FLAG(bool, FlightRecorder, false, JVMFlag::DEFAULT,
+ "(Deprecated) Enable Flight Recorder");)
+
+JFR_ONLY(PRODUCT_FLAG(ccstr, FlightRecorderOptions, NULL, JVMFlag::DEFAULT,
+ "Flight Recorder options");)
+
+JFR_ONLY(PRODUCT_FLAG(ccstr, StartFlightRecording, NULL, JVMFlag::DEFAULT,
+ "Start flight recording with options");)
+
+PRODUCT_FLAG(bool, UseFastUnorderedTimeStamps, false, JVMFlag::EXPERIMENTAL,
+ "Use platform unstable time where supported for timestamps only");
+
+PRODUCT_FLAG(bool, UseNewFieldLayout, true, JVMFlag::DEFAULT,
+ "(Deprecated) Use new algorithm to compute field layouts");
+
+PRODUCT_FLAG(bool, UseEmptySlotsInSupers, true, JVMFlag::DEFAULT,
+ "Allow allocating fields in empty slots of super-classes");
+
+
+#ifdef _LP64
+PRODUCT_FLAG(bool, UseCompressedOops, false, JVMFlag::LP64,
+ "Use 32-bit object references in 64-bit VM. "
+ "lp64_product means flag is always constant in 32 bit VM");
+
+PRODUCT_FLAG(bool, UseCompressedClassPointers, false, JVMFlag::LP64,
+ "Use 32-bit class pointers in 64-bit VM. "
+ "lp64_product means flag is always constant in 32 bit VM");
+
+PRODUCT_FLAG(intx, ObjectAlignmentInBytes, 8, JVMFlag::LP64 | JVMFlag::RANGE | JVMFlag::CONSTRAINT,
+ "Default object alignment in bytes, 8 is minimum");
+ FLAG_RANGE( ObjectAlignmentInBytes, 8, 256);
+ FLAG_CONSTRAINT( ObjectAlignmentInBytes, (void*)ObjectAlignmentInBytesConstraintFunc, JVMFlag::AtParse);
+
+#elif defined(IS_DECLARING_FLAG)
+const bool UseCompressedOops = false; // !JVMFlag::LP64
+const bool UseCompressedClassPointers = false; // !JVMFlag::LP64
+const intx ObjectAlignmentInBytes = 8; // !JVMFlag::LP64
+#endif // _LP64
#endif // SHARE_RUNTIME_GLOBALS_HPP
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