--- /dev/null 2015-09-16 15:21:30.000000000 -0700 +++ new/src/share/vm/jvmci/jvmciRuntime.cpp 2015-09-16 15:21:30.000000000 -0700 @@ -0,0 +1,964 @@ +/* + * Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +#include "precompiled.hpp" +#include "asm/codeBuffer.hpp" +#include "code/codeCache.hpp" +#include "compiler/compileBroker.hpp" +#include "compiler/disassembler.hpp" +#include "jvmci/jvmciRuntime.hpp" +#include "jvmci/jvmciCompilerToVM.hpp" +#include "jvmci/jvmciCompiler.hpp" +#include "jvmci/jvmciJavaClasses.hpp" +#include "jvmci/jvmciEnv.hpp" +#include "memory/oopFactory.hpp" +#include "oops/oop.inline.hpp" +#include "oops/objArrayOop.inline.hpp" +#include "prims/jvm.h" +#include "runtime/biasedLocking.hpp" +#include "runtime/interfaceSupport.hpp" +#include "runtime/reflection.hpp" +#include "runtime/sharedRuntime.hpp" +#include "utilities/debug.hpp" +#include "utilities/defaultStream.hpp" + +#if defined(_MSC_VER) +#define strtoll _strtoi64 +#endif + +jobject JVMCIRuntime::_HotSpotJVMCIRuntime_instance = NULL; +bool JVMCIRuntime::_HotSpotJVMCIRuntime_initialized = false; +const char* JVMCIRuntime::_compiler = NULL; +const char* JVMCIRuntime::_options = NULL; +bool JVMCIRuntime::_shutdown_called = false; + +void JVMCIRuntime::initialize_natives(JNIEnv *env, jclass c2vmClass) { +#ifdef _LP64 + uintptr_t heap_end = (uintptr_t) Universe::heap()->reserved_region().end(); + uintptr_t allocation_end = heap_end + ((uintptr_t)16) * 1024 * 1024 * 1024; + guarantee(heap_end < allocation_end, "heap end too close to end of address space (might lead to erroneous TLAB allocations)"); +#else + fatal("check TLAB allocation code for address space conflicts"); +#endif + + JavaThread* THREAD = JavaThread::current(); + { + ThreadToNativeFromVM trans(THREAD); + + ResourceMark rm; + HandleMark hm; + + // Ensure _non_oop_bits is initialized + Universe::non_oop_word(); + + env->RegisterNatives(c2vmClass, CompilerToVM::methods, CompilerToVM::methods_count()); + } + if (HAS_PENDING_EXCEPTION) { + abort_on_pending_exception(PENDING_EXCEPTION, "Could not register natives"); + } +} + +BasicType JVMCIRuntime::kindToBasicType(jchar ch) { + switch(ch) { + case 'z': return T_BOOLEAN; + case 'b': return T_BYTE; + case 's': return T_SHORT; + case 'c': return T_CHAR; + case 'i': return T_INT; + case 'f': return T_FLOAT; + case 'j': return T_LONG; + case 'd': return T_DOUBLE; + case 'a': return T_OBJECT; + case '-': return T_ILLEGAL; + default: + fatal(err_msg("unexpected Kind: %c", ch)); + break; + } + return T_ILLEGAL; +} + +// Simple helper to see if the caller of a runtime stub which +// entered the VM has been deoptimized + +static bool caller_is_deopted() { + JavaThread* thread = JavaThread::current(); + RegisterMap reg_map(thread, false); + frame runtime_frame = thread->last_frame(); + frame caller_frame = runtime_frame.sender(®_map); + assert(caller_frame.is_compiled_frame(), "must be compiled"); + return caller_frame.is_deoptimized_frame(); +} + +// Stress deoptimization +static void deopt_caller() { + if ( !caller_is_deopted()) { + JavaThread* thread = JavaThread::current(); + RegisterMap reg_map(thread, false); + frame runtime_frame = thread->last_frame(); + frame caller_frame = runtime_frame.sender(®_map); + Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint); + assert(caller_is_deopted(), "Must be deoptimized"); + } +} + +JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_instance(JavaThread* thread, Klass* klass)) + JRT_BLOCK; + assert(klass->is_klass(), "not a class"); + instanceKlassHandle h(thread, klass); + h->check_valid_for_instantiation(true, CHECK); + // make sure klass is initialized + h->initialize(CHECK); + // allocate instance and return via TLS + oop obj = h->allocate_instance(CHECK); + thread->set_vm_result(obj); + JRT_BLOCK_END; + + if (ReduceInitialCardMarks) { + new_store_pre_barrier(thread); + } +JRT_END + +JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_array(JavaThread* thread, Klass* array_klass, jint length)) + JRT_BLOCK; + // Note: no handle for klass needed since they are not used + // anymore after new_objArray() and no GC can happen before. + // (This may have to change if this code changes!) + assert(array_klass->is_klass(), "not a class"); + oop obj; + if (array_klass->oop_is_typeArray()) { + BasicType elt_type = TypeArrayKlass::cast(array_klass)->element_type(); + obj = oopFactory::new_typeArray(elt_type, length, CHECK); + } else { + Klass* elem_klass = ObjArrayKlass::cast(array_klass)->element_klass(); + obj = oopFactory::new_objArray(elem_klass, length, CHECK); + } + thread->set_vm_result(obj); + // This is pretty rare but this runtime patch is stressful to deoptimization + // if we deoptimize here so force a deopt to stress the path. + if (DeoptimizeALot) { + static int deopts = 0; + // Alternate between deoptimizing and raising an error (which will also cause a deopt) + if (deopts++ % 2 == 0) { + ResourceMark rm(THREAD); + THROW(vmSymbols::java_lang_OutOfMemoryError()); + } else { + deopt_caller(); + } + } + JRT_BLOCK_END; + + if (ReduceInitialCardMarks) { + new_store_pre_barrier(thread); + } +JRT_END + +void JVMCIRuntime::new_store_pre_barrier(JavaThread* thread) { + // After any safepoint, just before going back to compiled code, + // we inform the GC that we will be doing initializing writes to + // this object in the future without emitting card-marks, so + // GC may take any compensating steps. + // NOTE: Keep this code consistent with GraphKit::store_barrier. + + oop new_obj = thread->vm_result(); + if (new_obj == NULL) return; + + assert(Universe::heap()->can_elide_tlab_store_barriers(), + "compiler must check this first"); + // GC may decide to give back a safer copy of new_obj. + new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj); + thread->set_vm_result(new_obj); +} + +JRT_ENTRY(void, JVMCIRuntime::new_multi_array(JavaThread* thread, Klass* klass, int rank, jint* dims)) + assert(klass->is_klass(), "not a class"); + assert(rank >= 1, "rank must be nonzero"); + oop obj = ArrayKlass::cast(klass)->multi_allocate(rank, dims, CHECK); + thread->set_vm_result(obj); +JRT_END + +JRT_ENTRY(void, JVMCIRuntime::dynamic_new_array(JavaThread* thread, oopDesc* element_mirror, jint length)) + oop obj = Reflection::reflect_new_array(element_mirror, length, CHECK); + thread->set_vm_result(obj); +JRT_END + +JRT_ENTRY(void, JVMCIRuntime::dynamic_new_instance(JavaThread* thread, oopDesc* type_mirror)) + instanceKlassHandle klass(THREAD, java_lang_Class::as_Klass(type_mirror)); + + if (klass == NULL) { + ResourceMark rm(THREAD); + THROW(vmSymbols::java_lang_InstantiationException()); + } + + // Create new instance (the receiver) + klass->check_valid_for_instantiation(false, CHECK); + + // Make sure klass gets initialized + klass->initialize(CHECK); + + oop obj = klass->allocate_instance(CHECK); + thread->set_vm_result(obj); +JRT_END + +extern void vm_exit(int code); + +// Enter this method from compiled code handler below. This is where we transition +// to VM mode. This is done as a helper routine so that the method called directly +// from compiled code does not have to transition to VM. This allows the entry +// method to see if the nmethod that we have just looked up a handler for has +// been deoptimized while we were in the vm. This simplifies the assembly code +// cpu directories. +// +// We are entering here from exception stub (via the entry method below) +// If there is a compiled exception handler in this method, we will continue there; +// otherwise we will unwind the stack and continue at the caller of top frame method +// Note: we enter in Java using a special JRT wrapper. This wrapper allows us to +// control the area where we can allow a safepoint. After we exit the safepoint area we can +// check to see if the handler we are going to return is now in a nmethod that has +// been deoptimized. If that is the case we return the deopt blob +// unpack_with_exception entry instead. This makes life for the exception blob easier +// because making that same check and diverting is painful from assembly language. +JRT_ENTRY_NO_ASYNC(static address, exception_handler_for_pc_helper(JavaThread* thread, oopDesc* ex, address pc, nmethod*& nm)) + // Reset method handle flag. + thread->set_is_method_handle_return(false); + + Handle exception(thread, ex); + nm = CodeCache::find_nmethod(pc); + assert(nm != NULL, "this is not a compiled method"); + // Adjust the pc as needed/ + if (nm->is_deopt_pc(pc)) { + RegisterMap map(thread, false); + frame exception_frame = thread->last_frame().sender(&map); + // if the frame isn't deopted then pc must not correspond to the caller of last_frame + assert(exception_frame.is_deoptimized_frame(), "must be deopted"); + pc = exception_frame.pc(); + } +#ifdef ASSERT + assert(exception.not_null(), "NULL exceptions should be handled by throw_exception"); + assert(exception->is_oop(), "just checking"); + // Check that exception is a subclass of Throwable, otherwise we have a VerifyError + if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { + if (ExitVMOnVerifyError) vm_exit(-1); + ShouldNotReachHere(); + } +#endif + + // Check the stack guard pages and reenable them if necessary and there is + // enough space on the stack to do so. Use fast exceptions only if the guard + // pages are enabled. + bool guard_pages_enabled = thread->stack_yellow_zone_enabled(); + if (!guard_pages_enabled) guard_pages_enabled = thread->reguard_stack(); + + if (JvmtiExport::can_post_on_exceptions()) { + // To ensure correct notification of exception catches and throws + // we have to deoptimize here. If we attempted to notify the + // catches and throws during this exception lookup it's possible + // we could deoptimize on the way out of the VM and end back in + // the interpreter at the throw site. This would result in double + // notifications since the interpreter would also notify about + // these same catches and throws as it unwound the frame. + + RegisterMap reg_map(thread); + frame stub_frame = thread->last_frame(); + frame caller_frame = stub_frame.sender(®_map); + + // We don't really want to deoptimize the nmethod itself since we + // can actually continue in the exception handler ourselves but I + // don't see an easy way to have the desired effect. + Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint); + assert(caller_is_deopted(), "Must be deoptimized"); + + return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); + } + + // ExceptionCache is used only for exceptions at call sites and not for implicit exceptions + if (guard_pages_enabled) { + address fast_continuation = nm->handler_for_exception_and_pc(exception, pc); + if (fast_continuation != NULL) { + // Set flag if return address is a method handle call site. + thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); + return fast_continuation; + } + } + + // If the stack guard pages are enabled, check whether there is a handler in + // the current method. Otherwise (guard pages disabled), force an unwind and + // skip the exception cache update (i.e., just leave continuation==NULL). + address continuation = NULL; + if (guard_pages_enabled) { + + // New exception handling mechanism can support inlined methods + // with exception handlers since the mappings are from PC to PC + + // debugging support + // tracing + if (TraceExceptions) { + ttyLocker ttyl; + ResourceMark rm; + tty->print_cr("Exception <%s> (" INTPTR_FORMAT ") thrown in compiled method <%s> at PC " INTPTR_FORMAT " for thread " INTPTR_FORMAT "", + exception->print_value_string(), p2i((address)exception()), nm->method()->print_value_string(), p2i(pc), p2i(thread)); + } + // for AbortVMOnException flag + NOT_PRODUCT(Exceptions::debug_check_abort(exception)); + + // Clear out the exception oop and pc since looking up an + // exception handler can cause class loading, which might throw an + // exception and those fields are expected to be clear during + // normal bytecode execution. + thread->clear_exception_oop_and_pc(); + + continuation = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, false, false); + // If an exception was thrown during exception dispatch, the exception oop may have changed + thread->set_exception_oop(exception()); + thread->set_exception_pc(pc); + + // the exception cache is used only by non-implicit exceptions + if (continuation != NULL && !SharedRuntime::deopt_blob()->contains(continuation)) { + nm->add_handler_for_exception_and_pc(exception, pc, continuation); + } + } + + // Set flag if return address is a method handle call site. + thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); + + if (TraceExceptions) { + ttyLocker ttyl; + ResourceMark rm; + tty->print_cr("Thread " PTR_FORMAT " continuing at PC " PTR_FORMAT " for exception thrown at PC " PTR_FORMAT, + p2i(thread), p2i(continuation), p2i(pc)); + } + + return continuation; +JRT_END + +// Enter this method from compiled code only if there is a Java exception handler +// in the method handling the exception. +// We are entering here from exception stub. We don't do a normal VM transition here. +// We do it in a helper. This is so we can check to see if the nmethod we have just +// searched for an exception handler has been deoptimized in the meantime. +address JVMCIRuntime::exception_handler_for_pc(JavaThread* thread) { + oop exception = thread->exception_oop(); + address pc = thread->exception_pc(); + // Still in Java mode + DEBUG_ONLY(ResetNoHandleMark rnhm); + nmethod* nm = NULL; + address continuation = NULL; + { + // Enter VM mode by calling the helper + ResetNoHandleMark rnhm; + continuation = exception_handler_for_pc_helper(thread, exception, pc, nm); + } + // Back in JAVA, use no oops DON'T safepoint + + // Now check to see if the compiled method we were called from is now deoptimized. + // If so we must return to the deopt blob and deoptimize the nmethod + if (nm != NULL && caller_is_deopted()) { + continuation = SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); + } + + assert(continuation != NULL, "no handler found"); + return continuation; +} + +JRT_ENTRY(void, JVMCIRuntime::create_null_exception(JavaThread* thread)) + SharedRuntime::throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); + thread->set_vm_result(PENDING_EXCEPTION); + CLEAR_PENDING_EXCEPTION; +JRT_END + +JRT_ENTRY(void, JVMCIRuntime::create_out_of_bounds_exception(JavaThread* thread, jint index)) + char message[jintAsStringSize]; + sprintf(message, "%d", index); + SharedRuntime::throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), message); + thread->set_vm_result(PENDING_EXCEPTION); + CLEAR_PENDING_EXCEPTION; +JRT_END + +JRT_ENTRY_NO_ASYNC(void, JVMCIRuntime::monitorenter(JavaThread* thread, oopDesc* obj, BasicLock* lock)) + IF_TRACE_jvmci_3 { + char type[O_BUFLEN]; + obj->klass()->name()->as_C_string(type, O_BUFLEN); + markOop mark = obj->mark(); + TRACE_jvmci_3("%s: entered locking slow case with obj=" INTPTR_FORMAT ", type=%s, mark=" INTPTR_FORMAT ", lock=" INTPTR_FORMAT, thread->name(), p2i(obj), type, p2i(mark), p2i(lock)); + tty->flush(); + } +#ifdef ASSERT + if (PrintBiasedLockingStatistics) { + Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); + } +#endif + Handle h_obj(thread, obj); + assert(h_obj()->is_oop(), "must be NULL or an object"); + if (UseBiasedLocking) { + // Retry fast entry if bias is revoked to avoid unnecessary inflation + ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); + } else { + if (JVMCIUseFastLocking) { + // When using fast locking, the compiled code has already tried the fast case + ObjectSynchronizer::slow_enter(h_obj, lock, THREAD); + } else { + ObjectSynchronizer::fast_enter(h_obj, lock, false, THREAD); + } + } + TRACE_jvmci_3("%s: exiting locking slow with obj=" INTPTR_FORMAT, thread->name(), p2i(obj)); +JRT_END + +JRT_LEAF(void, JVMCIRuntime::monitorexit(JavaThread* thread, oopDesc* obj, BasicLock* lock)) + assert(thread == JavaThread::current(), "threads must correspond"); + assert(thread->last_Java_sp(), "last_Java_sp must be set"); + // monitorexit is non-blocking (leaf routine) => no exceptions can be thrown + EXCEPTION_MARK; + +#ifdef DEBUG + if (!obj->is_oop()) { + ResetNoHandleMark rhm; + nmethod* method = thread->last_frame().cb()->as_nmethod_or_null(); + if (method != NULL) { + tty->print_cr("ERROR in monitorexit in method %s wrong obj " INTPTR_FORMAT, method->name(), p2i(obj)); + } + thread->print_stack_on(tty); + assert(false, "invalid lock object pointer dected"); + } +#endif + + if (JVMCIUseFastLocking) { + // When using fast locking, the compiled code has already tried the fast case + ObjectSynchronizer::slow_exit(obj, lock, THREAD); + } else { + ObjectSynchronizer::fast_exit(obj, lock, THREAD); + } + IF_TRACE_jvmci_3 { + char type[O_BUFLEN]; + obj->klass()->name()->as_C_string(type, O_BUFLEN); + TRACE_jvmci_3("%s: exited locking slow case with obj=" INTPTR_FORMAT ", type=%s, mark=" INTPTR_FORMAT ", lock=" INTPTR_FORMAT, thread->name(), p2i(obj), type, p2i(obj->mark()), p2i(lock)); + tty->flush(); + } +JRT_END + +JRT_LEAF(void, JVMCIRuntime::log_object(JavaThread* thread, oopDesc* obj, jint flags)) + bool string = mask_bits_are_true(flags, LOG_OBJECT_STRING); + bool addr = mask_bits_are_true(flags, LOG_OBJECT_ADDRESS); + bool newline = mask_bits_are_true(flags, LOG_OBJECT_NEWLINE); + if (!string) { + if (!addr && obj->is_oop_or_null(true)) { + char buf[O_BUFLEN]; + tty->print("%s@" INTPTR_FORMAT, obj->klass()->name()->as_C_string(buf, O_BUFLEN), p2i(obj)); + } else { + tty->print(INTPTR_FORMAT, p2i(obj)); + } + } else { + ResourceMark rm; + assert(obj != NULL && java_lang_String::is_instance(obj), "must be"); + char *buf = java_lang_String::as_utf8_string(obj); + tty->print_raw(buf); + } + if (newline) { + tty->cr(); + } +JRT_END + +JRT_LEAF(void, JVMCIRuntime::write_barrier_pre(JavaThread* thread, oopDesc* obj)) + thread->satb_mark_queue().enqueue(obj); +JRT_END + +JRT_LEAF(void, JVMCIRuntime::write_barrier_post(JavaThread* thread, void* card_addr)) + thread->dirty_card_queue().enqueue(card_addr); +JRT_END + +JRT_LEAF(jboolean, JVMCIRuntime::validate_object(JavaThread* thread, oopDesc* parent, oopDesc* child)) + bool ret = true; + if(!Universe::heap()->is_in_closed_subset(parent)) { + tty->print_cr("Parent Object " INTPTR_FORMAT " not in heap", p2i(parent)); + parent->print(); + ret=false; + } + if(!Universe::heap()->is_in_closed_subset(child)) { + tty->print_cr("Child Object " INTPTR_FORMAT " not in heap", p2i(child)); + child->print(); + ret=false; + } + return (jint)ret; +JRT_END + +JRT_ENTRY(void, JVMCIRuntime::vm_error(JavaThread* thread, jlong where, jlong format, jlong value)) + ResourceMark rm; + const char *error_msg = where == 0L ? "" : (char*) (address) where; + char *detail_msg = NULL; + if (format != 0L) { + const char* buf = (char*) (address) format; + size_t detail_msg_length = strlen(buf) * 2; + detail_msg = (char *) NEW_RESOURCE_ARRAY(u_char, detail_msg_length); + jio_snprintf(detail_msg, detail_msg_length, buf, value); + } + report_vm_error(__FILE__, __LINE__, error_msg, detail_msg); +JRT_END + +JRT_LEAF(oopDesc*, JVMCIRuntime::load_and_clear_exception(JavaThread* thread)) + oop exception = thread->exception_oop(); + assert(exception != NULL, "npe"); + thread->set_exception_oop(NULL); + thread->set_exception_pc(0); + return exception; +JRT_END + +PRAGMA_DIAG_PUSH +PRAGMA_FORMAT_NONLITERAL_IGNORED +JRT_LEAF(void, JVMCIRuntime::log_printf(JavaThread* thread, oopDesc* format, jlong v1, jlong v2, jlong v3)) + ResourceMark rm; + assert(format != NULL && java_lang_String::is_instance(format), "must be"); + char *buf = java_lang_String::as_utf8_string(format); + tty->print((const char*)buf, v1, v2, v3); +JRT_END +PRAGMA_DIAG_POP + +static void decipher(jlong v, bool ignoreZero) { + if (v != 0 || !ignoreZero) { + void* p = (void *)(address) v; + CodeBlob* cb = CodeCache::find_blob(p); + if (cb) { + if (cb->is_nmethod()) { + char buf[O_BUFLEN]; + tty->print("%s [" INTPTR_FORMAT "+" JLONG_FORMAT "]", cb->as_nmethod_or_null()->method()->name_and_sig_as_C_string(buf, O_BUFLEN), p2i(cb->code_begin()), (jlong)((address)v - cb->code_begin())); + return; + } + cb->print_value_on(tty); + return; + } + if (Universe::heap()->is_in(p)) { + oop obj = oop(p); + obj->print_value_on(tty); + return; + } + tty->print(INTPTR_FORMAT " [long: " JLONG_FORMAT ", double %lf, char %c]",p2i((void *)v), (jlong)v, (jdouble)v, (char)v); + } +} + +PRAGMA_DIAG_PUSH +PRAGMA_FORMAT_NONLITERAL_IGNORED +JRT_LEAF(void, JVMCIRuntime::vm_message(jboolean vmError, jlong format, jlong v1, jlong v2, jlong v3)) + ResourceMark rm; + const char *buf = (const char*) (address) format; + if (vmError) { + if (buf != NULL) { + fatal(err_msg(buf, v1, v2, v3)); + } else { + fatal(""); + } + } else if (buf != NULL) { + tty->print(buf, v1, v2, v3); + } else { + assert(v2 == 0, "v2 != 0"); + assert(v3 == 0, "v3 != 0"); + decipher(v1, false); + } +JRT_END +PRAGMA_DIAG_POP + +JRT_LEAF(void, JVMCIRuntime::log_primitive(JavaThread* thread, jchar typeChar, jlong value, jboolean newline)) + union { + jlong l; + jdouble d; + jfloat f; + } uu; + uu.l = value; + switch (typeChar) { + case 'z': tty->print(value == 0 ? "false" : "true"); break; + case 'b': tty->print("%d", (jbyte) value); break; + case 'c': tty->print("%c", (jchar) value); break; + case 's': tty->print("%d", (jshort) value); break; + case 'i': tty->print("%d", (jint) value); break; + case 'f': tty->print("%f", uu.f); break; + case 'j': tty->print(JLONG_FORMAT, value); break; + case 'd': tty->print("%lf", uu.d); break; + default: assert(false, "unknown typeChar"); break; + } + if (newline) { + tty->cr(); + } +JRT_END + +JRT_ENTRY(jint, JVMCIRuntime::identity_hash_code(JavaThread* thread, oopDesc* obj)) + return (jint) obj->identity_hash(); +JRT_END + +JRT_ENTRY(jboolean, JVMCIRuntime::thread_is_interrupted(JavaThread* thread, oopDesc* receiver, jboolean clear_interrupted)) + // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. + // This locking requires thread_in_vm which is why this method cannot be JRT_LEAF. + Handle receiverHandle(thread, receiver); + MutexLockerEx ml(thread->threadObj() == (void*)receiver ? NULL : Threads_lock); + JavaThread* receiverThread = java_lang_Thread::thread(receiverHandle()); + if (receiverThread == NULL) { + // The other thread may exit during this process, which is ok so return false. + return JNI_FALSE; + } else { + return (jint) Thread::is_interrupted(receiverThread, clear_interrupted != 0); + } +JRT_END + +JRT_ENTRY(jint, JVMCIRuntime::test_deoptimize_call_int(JavaThread* thread, int value)) + deopt_caller(); + return value; +JRT_END + +// private static JVMCIRuntime JVMCI.initializeRuntime() +JVM_ENTRY(jobject, JVM_GetJVMCIRuntime(JNIEnv *env, jclass c)) + if (!EnableJVMCI) { + THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled") + } + JVMCIRuntime::initialize_HotSpotJVMCIRuntime(CHECK_NULL); + jobject ret = JVMCIRuntime::get_HotSpotJVMCIRuntime_jobject(CHECK_NULL); + return ret; +JVM_END + +Handle JVMCIRuntime::callStatic(const char* className, const char* methodName, const char* signature, JavaCallArguments* args, TRAPS) { + guarantee(!_HotSpotJVMCIRuntime_initialized, "cannot reinitialize HotSpotJVMCIRuntime"); + + TempNewSymbol name = SymbolTable::new_symbol(className, CHECK_(Handle())); + KlassHandle klass = SystemDictionary::resolve_or_fail(name, true, CHECK_(Handle())); + TempNewSymbol runtime = SymbolTable::new_symbol(methodName, CHECK_(Handle())); + TempNewSymbol sig = SymbolTable::new_symbol(signature, CHECK_(Handle())); + JavaValue result(T_OBJECT); + if (args == NULL) { + JavaCalls::call_static(&result, klass, runtime, sig, CHECK_(Handle())); + } else { + JavaCalls::call_static(&result, klass, runtime, sig, args, CHECK_(Handle())); + } + return Handle((oop)result.get_jobject()); +} + +static bool jvmci_options_file_exists() { + const char* home = Arguments::get_java_home(); + size_t path_len = strlen(home) + strlen("/lib/jvmci/options") + 1; + char path[JVM_MAXPATHLEN]; + char sep = os::file_separator()[0]; + jio_snprintf(path, JVM_MAXPATHLEN, "%s%clib%cjvmci%coptions", home, sep, sep, sep); + struct stat st; + return os::stat(path, &st) == 0; +} + +void JVMCIRuntime::initialize_HotSpotJVMCIRuntime(TRAPS) { + if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) { +#ifdef ASSERT + // This should only be called in the context of the JVMCI class being initialized + TempNewSymbol name = SymbolTable::new_symbol("jdk/internal/jvmci/runtime/JVMCI", CHECK); + Klass* k = SystemDictionary::resolve_or_null(name, CHECK); + instanceKlassHandle klass = InstanceKlass::cast(k); + assert(klass->is_being_initialized() && klass->is_reentrant_initialization(THREAD), + "HotSpotJVMCIRuntime initialization should only be triggered through JVMCI initialization"); +#endif + + bool parseOptionsFile = jvmci_options_file_exists(); + if (_options != NULL || parseOptionsFile) { + JavaCallArguments args; + oop options = java_lang_String::create_oop_from_str(_options, CHECK); + args.push_oop(options); + args.push_int(parseOptionsFile); + callStatic("jdk/internal/jvmci/options/OptionsParser", + "parseOptionsFromVM", + "(Ljava/lang/String;Z)Ljava/lang/Boolean;", &args, CHECK); + } + + if (_compiler != NULL) { + JavaCallArguments args; + oop compiler = java_lang_String::create_oop_from_str(_compiler, CHECK); + args.push_oop(compiler); + callStatic("jdk/internal/jvmci/hotspot/HotSpotJVMCICompilerConfig", + "selectCompiler", + "(Ljava/lang/String;)Ljava/lang/Boolean;", &args, CHECK); + } + + Handle result = callStatic("jdk/internal/jvmci/hotspot/HotSpotJVMCIRuntime", + "runtime", + "()Ljdk/internal/jvmci/hotspot/HotSpotJVMCIRuntime;", NULL, CHECK); + _HotSpotJVMCIRuntime_initialized = true; + _HotSpotJVMCIRuntime_instance = JNIHandles::make_global(result()); + } +} + +void JVMCIRuntime::initialize_JVMCI(TRAPS) { + if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) { + callStatic("jdk/internal/jvmci/runtime/JVMCI", + "getRuntime", + "()Ljdk/internal/jvmci/runtime/JVMCIRuntime;", NULL, CHECK); + } + assert(_HotSpotJVMCIRuntime_initialized == true, "what?"); +} + +void JVMCIRuntime::metadata_do(void f(Metadata*)) { + // For simplicity, the existence of HotSpotJVMCIMetaAccessContext in + // the SystemDictionary well known classes should ensure the other + // classes have already been loaded, so make sure their order in the + // table enforces that. + assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_internal_jvmci_hotspot_HotSpotResolvedJavaMethodImpl) < + SystemDictionary::WK_KLASS_ENUM_NAME(jdk_internal_jvmci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier"); + assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_internal_jvmci_hotspot_HotSpotConstantPool) < + SystemDictionary::WK_KLASS_ENUM_NAME(jdk_internal_jvmci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier"); + assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_internal_jvmci_hotspot_HotSpotResolvedObjectTypeImpl) < + SystemDictionary::WK_KLASS_ENUM_NAME(jdk_internal_jvmci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier"); + + if (HotSpotJVMCIMetaAccessContext::klass() == NULL || + !HotSpotJVMCIMetaAccessContext::klass()->is_linked()) { + // Nothing could be registered yet + return; + } + + // WeakReference[] + objArrayOop allContexts = HotSpotJVMCIMetaAccessContext::allContexts(); + if (allContexts == NULL) { + return; + } + + // These must be loaded at this point but the linking state doesn't matter. + assert(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass() != NULL, "must be loaded"); + assert(SystemDictionary::HotSpotConstantPool_klass() != NULL, "must be loaded"); + assert(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass() != NULL, "must be loaded"); + + for (int i = 0; i < allContexts->length(); i++) { + oop ref = allContexts->obj_at(i); + if (ref != NULL) { + oop referent = java_lang_ref_Reference::referent(ref); + if (referent != NULL) { + // Chunked Object[] with last element pointing to next chunk + objArrayOop metadataRoots = HotSpotJVMCIMetaAccessContext::metadataRoots(referent); + while (metadataRoots != NULL) { + for (int typeIndex = 0; typeIndex < metadataRoots->length() - 1; typeIndex++) { + oop reference = metadataRoots->obj_at(typeIndex); + if (reference == NULL) { + continue; + } + oop metadataRoot = java_lang_ref_Reference::referent(reference); + if (metadataRoot == NULL) { + continue; + } + if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass())) { + Method* method = CompilerToVM::asMethod(metadataRoot); + f(method); + } else if (metadataRoot->is_a(SystemDictionary::HotSpotConstantPool_klass())) { + ConstantPool* constantPool = CompilerToVM::asConstantPool(metadataRoot); + f(constantPool); + } else if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass())) { + Klass* klass = CompilerToVM::asKlass(metadataRoot); + f(klass); + } else { + metadataRoot->print(); + ShouldNotReachHere(); + } + } + metadataRoots = (objArrayOop)metadataRoots->obj_at(metadataRoots->length() - 1); + assert(metadataRoots == NULL || metadataRoots->is_objArray(), "wrong type"); + } + } + } + } +} + +// private static void CompilerToVM.init() +JVM_ENTRY(void, JVM_InitializeJVMCINatives(JNIEnv *env, jclass c2vmClass)) + JVMCIRuntime::initialize_natives(env, c2vmClass); +JVM_END + +/** + * Closure for parsing a line from a *.properties file in jre/lib/jvmci/properties. + * The line must match the regular expression "[^=]+=.*". That is one or more + * characters other than '=' followed by '=' followed by zero or more characters. + * Everything before the '=' is the property name and everything after '=' is the value. + * Lines that start with '#' are treated as comments and ignored. + * No special processing of whitespace or any escape characters is performed. + * The last definition of a property "wins" (i.e., it overrides all earlier + * definitions of the property). + */ +class JVMCIPropertiesFileClosure : public ParseClosure { + SystemProperty** _plist; +public: + JVMCIPropertiesFileClosure(SystemProperty** plist) : _plist(plist) {} + void do_line(char* line) { + if (line[0] == '#') { + // skip comment + return; + } + size_t len = strlen(line); + char* sep = strchr(line, '='); + if (sep == NULL) { + warn_and_abort("invalid format: could not find '=' character"); + return; + } + if (sep == line) { + warn_and_abort("invalid format: name cannot be empty"); + return; + } + *sep = '\0'; + const char* name = line; + char* value = sep + 1; + Arguments::PropertyList_unique_add(_plist, name, value); + } +}; + +void JVMCIRuntime::parse_properties(SystemProperty** plist) { + char jvmciDir[JVM_MAXPATHLEN]; + const char* fileSep = os::file_separator(); + jio_snprintf(jvmciDir, sizeof(jvmciDir), "%s%slib%sjvmci", + Arguments::get_java_home(), fileSep, fileSep, fileSep); + DIR* dir = os::opendir(jvmciDir); + if (dir != NULL) { + struct dirent *entry; + char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(jvmciDir), mtInternal); + JVMCIPropertiesFileClosure closure(plist); + const unsigned suffix_len = (unsigned)strlen(".properties"); + while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL && !closure.is_aborted()) { + const char* name = entry->d_name; + if (strlen(name) > suffix_len && strcmp(name + strlen(name) - suffix_len, ".properties") == 0) { + char propertiesFilePath[JVM_MAXPATHLEN]; + jio_snprintf(propertiesFilePath, sizeof(propertiesFilePath), "%s%s%s",jvmciDir, fileSep, name); + JVMCIRuntime::parse_lines(propertiesFilePath, &closure, false); + } + } + FREE_C_HEAP_ARRAY(char, dbuf); + os::closedir(dir); + } +} + +#define CHECK_WARN_ABORT_(message) THREAD); \ + if (HAS_PENDING_EXCEPTION) { \ + warning(message); \ + char buf[512]; \ + jio_snprintf(buf, 512, "Uncaught exception at %s:%d", __FILE__, __LINE__); \ + JVMCIRuntime::abort_on_pending_exception(PENDING_EXCEPTION, buf); \ + return; \ + } \ + (void)(0 + +void JVMCIRuntime::save_compiler(const char* compiler) { + assert(compiler != NULL, "npe"); + assert(_compiler == NULL, "cannot reassign JVMCI compiler"); + _compiler = compiler; +} + +void JVMCIRuntime::save_options(const char* options) { + assert(options != NULL, "npe"); + assert(_options == NULL, "cannot reassign JVMCI options"); + _options = options; +} + +void JVMCIRuntime::shutdown() { + if (_HotSpotJVMCIRuntime_instance != NULL) { + _shutdown_called = true; + JavaThread* THREAD = JavaThread::current(); + HandleMark hm(THREAD); + Handle receiver = get_HotSpotJVMCIRuntime(CHECK_ABORT); + JavaValue result(T_VOID); + JavaCallArguments args; + args.push_oop(receiver); + JavaCalls::call_special(&result, receiver->klass(), vmSymbols::shutdown_method_name(), vmSymbols::void_method_signature(), &args, CHECK_ABORT); + } +} + +void JVMCIRuntime::call_printStackTrace(Handle exception, Thread* thread) { + assert(exception->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected"); + JavaValue result(T_VOID); + JavaCalls::call_virtual(&result, + exception, + KlassHandle(thread, + SystemDictionary::Throwable_klass()), + vmSymbols::printStackTrace_name(), + vmSymbols::void_method_signature(), + thread); +} + +void JVMCIRuntime::abort_on_pending_exception(Handle exception, const char* message, bool dump_core) { + Thread* THREAD = Thread::current(); + CLEAR_PENDING_EXCEPTION; + tty->print_raw_cr(message); + call_printStackTrace(exception, THREAD); + + // Give other aborting threads to also print their stack traces. + // This can be very useful when debugging class initialization + // failures. + os::sleep(THREAD, 200, false); + + vm_abort(dump_core); +} + +void JVMCIRuntime::parse_lines(char* path, ParseClosure* closure, bool warnStatFailure) { + struct stat st; + if (os::stat(path, &st) == 0 && (st.st_mode & S_IFREG) == S_IFREG) { // exists & is regular file + int file_handle = os::open(path, 0, 0); + if (file_handle != -1) { + char* buffer = NEW_C_HEAP_ARRAY(char, st.st_size + 1, mtInternal); + int num_read; + num_read = (int) os::read(file_handle, (char*) buffer, st.st_size); + if (num_read == -1) { + warning("Error reading file %s due to %s", path, strerror(errno)); + } else if (num_read != st.st_size) { + warning("Only read %d of " SIZE_FORMAT " bytes from %s", num_read, (size_t) st.st_size, path); + } + os::close(file_handle); + closure->set_filename(path); + if (num_read == st.st_size) { + buffer[num_read] = '\0'; + + char* line = buffer; + while (line - buffer < num_read && !closure->is_aborted()) { + // find line end (\r, \n or \r\n) + char* nextline = NULL; + char* cr = strchr(line, '\r'); + char* lf = strchr(line, '\n'); + if (cr != NULL && lf != NULL) { + char* min = MIN2(cr, lf); + *min = '\0'; + if (lf == cr + 1) { + nextline = lf + 1; + } else { + nextline = min + 1; + } + } else if (cr != NULL) { + *cr = '\0'; + nextline = cr + 1; + } else if (lf != NULL) { + *lf = '\0'; + nextline = lf + 1; + } + // trim left + while (*line == ' ' || *line == '\t') line++; + char* end = line + strlen(line); + // trim right + while (end > line && (*(end -1) == ' ' || *(end -1) == '\t')) end--; + *end = '\0'; + // skip comments and empty lines + if (*line != '#' && strlen(line) > 0) { + closure->parse_line(line); + } + if (nextline != NULL) { + line = nextline; + } else { + // File without newline at the end + break; + } + } + } + FREE_C_HEAP_ARRAY(char, buffer); + } else { + warning("Error opening file %s due to %s", path, strerror(errno)); + } + } else if (warnStatFailure) { + warning("Could not stat file %s due to %s", path, strerror(errno)); + } +}