28 #include "memory/allocation.hpp"
29 #include "utilities/ostream.hpp"
30
31 // VM_Version provides information about the VM.
32
33 class Abstract_VM_Version: AllStatic {
34 protected:
35 friend class VMStructs;
36 static const char* _s_vm_release;
37 static const char* _s_internal_vm_info_string;
38 // These are set by machine-dependent initializations
39 static bool _supports_cx8;
40 static bool _supports_atomic_getset4;
41 static bool _supports_atomic_getset8;
42 static bool _supports_atomic_getadd4;
43 static bool _supports_atomic_getadd8;
44 static unsigned int _logical_processors_per_package;
45 static unsigned int _L1_data_cache_line_size;
46 static int _vm_major_version;
47 static int _vm_minor_version;
48 static int _vm_micro_version;
49 static int _vm_build_number;
50 static bool _initialized;
51 static unsigned int _parallel_worker_threads;
52 static bool _parallel_worker_threads_initialized;
53 static int _reserve_for_allocation_prefetch;
54
55 static unsigned int nof_parallel_worker_threads(unsigned int num,
56 unsigned int dem,
57 unsigned int switch_pt);
58 public:
59 static void initialize();
60
61 // Name
62 static const char* vm_name();
63 // Vendor
64 static const char* vm_vendor();
65 // VM version information string printed by launcher (java -version)
66 static const char* vm_info_string();
67 static const char* vm_release();
68 static const char* vm_platform_string();
69 static const char* vm_build_user();
70
71 static int vm_major_version() { assert(_initialized, "not initialized"); return _vm_major_version; }
72 static int vm_minor_version() { assert(_initialized, "not initialized"); return _vm_minor_version; }
73 static int vm_micro_version() { assert(_initialized, "not initialized"); return _vm_micro_version; }
74 static int vm_build_number() { assert(_initialized, "not initialized"); return _vm_build_number; }
75
76 // Gets the jvm_version_info.jvm_version defined in jvm.h
77 static unsigned int jvm_version();
78
79 // Internal version providing additional build information
80 static const char* internal_vm_info_string();
81 static const char* jre_release_version();
82
83 // does HW support an 8-byte compare-exchange operation?
84 static bool supports_cx8() {
85 #ifdef SUPPORTS_NATIVE_CX8
86 return true;
87 #else
88 return _supports_cx8;
89 #endif
90 }
91 // does HW support atomic get-and-set or atomic get-and-add? Used
92 // to guide intrinsification decisions for Unsafe atomic ops
93 static bool supports_atomic_getset4() {return _supports_atomic_getset4;}
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28 #include "memory/allocation.hpp"
29 #include "utilities/ostream.hpp"
30
31 // VM_Version provides information about the VM.
32
33 class Abstract_VM_Version: AllStatic {
34 protected:
35 friend class VMStructs;
36 static const char* _s_vm_release;
37 static const char* _s_internal_vm_info_string;
38 // These are set by machine-dependent initializations
39 static bool _supports_cx8;
40 static bool _supports_atomic_getset4;
41 static bool _supports_atomic_getset8;
42 static bool _supports_atomic_getadd4;
43 static bool _supports_atomic_getadd8;
44 static unsigned int _logical_processors_per_package;
45 static unsigned int _L1_data_cache_line_size;
46 static int _vm_major_version;
47 static int _vm_minor_version;
48 static int _vm_security_version;
49 static int _vm_build_number;
50 static bool _initialized;
51 static unsigned int _parallel_worker_threads;
52 static bool _parallel_worker_threads_initialized;
53 static int _reserve_for_allocation_prefetch;
54
55 static unsigned int nof_parallel_worker_threads(unsigned int num,
56 unsigned int dem,
57 unsigned int switch_pt);
58 public:
59 static void initialize();
60
61 // Name
62 static const char* vm_name();
63 // Vendor
64 static const char* vm_vendor();
65 // VM version information string printed by launcher (java -version)
66 static const char* vm_info_string();
67 static const char* vm_release();
68 static const char* vm_platform_string();
69 static const char* vm_build_user();
70
71 static int vm_major_version() { assert(_initialized, "not initialized"); return _vm_major_version; }
72 static int vm_minor_version() { assert(_initialized, "not initialized"); return _vm_minor_version; }
73 static int vm_security_version() { assert(_initialized, "not initialized"); return _vm_security_version; }
74 static int vm_build_number() { assert(_initialized, "not initialized"); return _vm_build_number; }
75
76 // Gets the jvm_version_info.jvm_version defined in jvm.h
77 static unsigned int jvm_version();
78
79 // Internal version providing additional build information
80 static const char* internal_vm_info_string();
81 static const char* jre_release_version();
82
83 // does HW support an 8-byte compare-exchange operation?
84 static bool supports_cx8() {
85 #ifdef SUPPORTS_NATIVE_CX8
86 return true;
87 #else
88 return _supports_cx8;
89 #endif
90 }
91 // does HW support atomic get-and-set or atomic get-and-add? Used
92 // to guide intrinsification decisions for Unsafe atomic ops
93 static bool supports_atomic_getset4() {return _supports_atomic_getset4;}
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