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src/hotspot/share/runtime/vm_version.hpp
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rev 56941 : 8233787: Break cycle in vm_version* includes
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*** 23,195 ****
*/
#ifndef SHARE_RUNTIME_VM_VERSION_HPP
#define SHARE_RUNTIME_VM_VERSION_HPP
! #include "memory/allocation.hpp"
! #include "utilities/ostream.hpp"
! #include "utilities/macros.hpp"
!
! typedef enum {
! NoDetectedVirtualization,
! XenHVM,
! KVM,
! VMWare,
! HyperV,
! PowerVM, // on AIX or Linux ppc64(le)
! PowerFullPartitionMode, // on Linux ppc64(le)
! PowerKVM
! } VirtualizationType;
!
! // VM_Version provides information about the VM.
!
! class Abstract_VM_Version: AllStatic {
! friend class VMStructs;
! friend class JVMCIVMStructs;
!
! protected:
! static const char* _s_vm_release;
! static const char* _s_internal_vm_info_string;
!
! // CPU feature flags.
! static uint64_t _features;
! static const char* _features_string;
!
! // These are set by machine-dependent initializations
! static bool _supports_cx8;
! static bool _supports_atomic_getset4;
! static bool _supports_atomic_getset8;
! static bool _supports_atomic_getadd4;
! static bool _supports_atomic_getadd8;
! static unsigned int _logical_processors_per_package;
! static unsigned int _L1_data_cache_line_size;
! static int _vm_major_version;
! static int _vm_minor_version;
! static int _vm_security_version;
! static int _vm_patch_version;
! static int _vm_build_number;
! static unsigned int _data_cache_line_flush_size;
!
! static VirtualizationType _detected_virtualization;
!
! public:
! // Called as part of the runtime services initialization which is
! // called from the management module initialization (via init_globals())
! // after argument parsing and attaching of the main thread has
! // occurred. Examines a variety of the hardware capabilities of
! // the platform to determine which features can be used to execute the
! // program.
! static void initialize() { }
!
! // This allows for early initialization of VM_Version information
! // that may be needed later in the initialization sequence but before
! // full VM_Version initialization is possible. It can not depend on any
! // other part of the VM being initialized when called. Platforms that
! // need to specialize this define VM_Version::early_initialize().
! static void early_initialize() { }
!
! // Called to initialize VM variables needing initialization
! // after command line parsing. Platforms that need to specialize
! // this should define VM_Version::init_before_ergo().
! static void init_before_ergo() {}
!
! // Name
! static const char* vm_name();
! // Vendor
! static const char* vm_vendor();
! // VM version information string printed by launcher (java -version)
! static const char* vm_info_string();
! static const char* vm_release();
! static const char* vm_platform_string();
! static const char* vm_build_user();
!
! static int vm_major_version() { return _vm_major_version; }
! static int vm_minor_version() { return _vm_minor_version; }
! static int vm_security_version() { return _vm_security_version; }
! static int vm_patch_version() { return _vm_patch_version; }
! static int vm_build_number() { return _vm_build_number; }
!
! // Gets the jvm_version_info.jvm_version defined in jvm.h
! static unsigned int jvm_version();
!
! // Internal version providing additional build information
! static const char* internal_vm_info_string();
! static const char* jre_release_version();
! static const char* jdk_debug_level();
! static const char* printable_jdk_debug_level();
!
! static uint64_t features() {
! return _features;
! }
!
! static const char* features_string() {
! return _features_string;
! }
!
! static VirtualizationType get_detected_virtualization() {
! return _detected_virtualization;
! }
!
! // platforms that need to specialize this
! // define VM_Version::print_platform_virtualization_info()
! static void print_platform_virtualization_info(outputStream*) { }
!
! // does HW support an 8-byte compare-exchange operation?
! static bool supports_cx8() {
! #ifdef SUPPORTS_NATIVE_CX8
! return true;
! #else
! return _supports_cx8;
! #endif
! }
! // does HW support atomic get-and-set or atomic get-and-add? Used
! // to guide intrinsification decisions for Unsafe atomic ops
! static bool supports_atomic_getset4() {return _supports_atomic_getset4;}
! static bool supports_atomic_getset8() {return _supports_atomic_getset8;}
! static bool supports_atomic_getadd4() {return _supports_atomic_getadd4;}
! static bool supports_atomic_getadd8() {return _supports_atomic_getadd8;}
!
! static unsigned int logical_processors_per_package() {
! return _logical_processors_per_package;
! }
!
! static unsigned int L1_data_cache_line_size() {
! return _L1_data_cache_line_size;
! }
!
! // the size in bytes of a data cache line flushed by a flush
! // operation which should be a power of two or zero if cache line
! // writeback is not supported by the current os_cpu combination
! static unsigned int data_cache_line_flush_size() {
! return _data_cache_line_flush_size;
! }
!
! // returns true if and only if cache line writeback is supported
! static bool supports_data_cache_line_flush() {
! return _data_cache_line_flush_size != 0;
! }
!
! // ARCH specific policy for the BiasedLocking
! static bool use_biased_locking() { return true; }
!
! // Number of page sizes efficiently supported by the hardware. Most chips now
! // support two sizes, thus this default implementation. Processor-specific
! // subclasses should define new versions to hide this one as needed. Note
! // that the O/S may support more sizes, but at most this many are used.
! static uint page_size_count() { return 2; }
!
! // Denominator for computing default ParallelGCThreads for machines with
! // a large number of cores.
! static uint parallel_worker_threads_denominator() { return 8; }
!
! // Does this CPU support spin wait instruction?
! static bool supports_on_spin_wait() { return false; }
!
! // Does platform support fast class initialization checks for static methods?
! static bool supports_fast_class_init_checks() { return false; }
!
! static bool print_matching_lines_from_file(const char* filename, outputStream* st, const char* keywords_to_match[]);
! };
!
#include CPU_HEADER(vm_version)
#endif // SHARE_RUNTIME_VM_VERSION_HPP
--- 23,31 ----
*/
#ifndef SHARE_RUNTIME_VM_VERSION_HPP
#define SHARE_RUNTIME_VM_VERSION_HPP
! #include "utilities/macros.hpp" // for CPU_HEADER() macro.
#include CPU_HEADER(vm_version)
#endif // SHARE_RUNTIME_VM_VERSION_HPP
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