25 #ifndef SHARE_RUNTIME_ABSTRACT_VM_VERSION_HPP
26 #define SHARE_RUNTIME_ABSTRACT_VM_VERSION_HPP
27
28 #include "memory/allStatic.hpp" // For declaration of class AllStatic
29 #include "utilities/globalDefinitions.hpp"
30
31 typedef enum {
32 NoDetectedVirtualization,
33 XenHVM,
34 XenPVHVM, // mix-mode on Linux aarch64
35 KVM,
36 VMWare,
37 HyperV,
38 HyperVRole,
39 PowerVM, // on AIX or Linux ppc64(le)
40 PowerFullPartitionMode, // on Linux ppc64(le)
41 PowerKVM
42 } VirtualizationType;
43
44 class outputStream;
45 enum class vmIntrinsicID;
46
47 // Abstract_VM_Version provides information about the VM.
48
49 class Abstract_VM_Version: AllStatic {
50 friend class VMStructs;
51 friend class JVMCIVMStructs;
52
53 protected:
54 static const char* _s_vm_release;
55 static const char* _s_internal_vm_info_string;
56
57 // CPU feature flags, can be affected by VM settings.
58 static uint64_t _features;
59
60 static const char* _features_string;
61
62 static const char* _cpu_info_string;
63
64 // Original CPU feature flags, not affected by VM settings.
115 static const char* vm_platform_string();
116 static const char* vm_variant();
117
118 static int vm_major_version() { return _vm_major_version; }
119 static int vm_minor_version() { return _vm_minor_version; }
120 static int vm_security_version() { return _vm_security_version; }
121 static int vm_patch_version() { return _vm_patch_version; }
122 static int vm_build_number() { return _vm_build_number; }
123
124 // Gets the jvm_version_info.jvm_version
125 static unsigned int jvm_version();
126
127 // Internal version providing additional build information
128 static const char* internal_vm_info_string();
129 static const char* jdk_debug_level();
130 static const char* printable_jdk_debug_level();
131
132 static const char* features_string() { return _features_string; }
133
134 static const char* cpu_info_string() { return _cpu_info_string; }
135 static const char* extract_features_string(const char* cpu_info_string,
136 size_t cpu_info_string_len,
137 size_t features_offset);
138
139 static VirtualizationType get_detected_virtualization() {
140 return _detected_virtualization;
141 }
142
143 // platforms that need to specialize this
144 // define VM_Version::print_platform_virtualization_info()
145 static void print_platform_virtualization_info(outputStream*) { }
146
147 // does HW support an 8-byte compare-exchange operation?
148 // Required to be true but still dynamically checked at runtime
149 // for platforms that don't set SUPPORTS_NATIVE_CX8
150 static bool supports_cx8() {
151 #ifdef SUPPORTS_NATIVE_CX8
152 return true;
153 #else
154 return _supports_cx8;
155 #endif
156 }
157 // does HW support atomic get-and-set or atomic get-and-add? Used
212
213 protected:
214 // VM_Version statics
215 static const size_t CPU_TYPE_DESC_BUF_SIZE = 256;
216 static const size_t CPU_DETAILED_DESC_BUF_SIZE = 4096;
217
218 static int _no_of_threads;
219 static int _no_of_cores;
220 static int _no_of_sockets;
221 static bool _initialized;
222 static char _cpu_name[CPU_TYPE_DESC_BUF_SIZE];
223 static char _cpu_desc[CPU_DETAILED_DESC_BUF_SIZE];
224
225 public:
226 static int number_of_threads(void);
227 static int number_of_cores(void);
228 static int number_of_sockets(void);
229
230 static const char* cpu_name(void);
231 static const char* cpu_description(void);
232 };
233
234 #endif // SHARE_RUNTIME_ABSTRACT_VM_VERSION_HPP
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25 #ifndef SHARE_RUNTIME_ABSTRACT_VM_VERSION_HPP
26 #define SHARE_RUNTIME_ABSTRACT_VM_VERSION_HPP
27
28 #include "memory/allStatic.hpp" // For declaration of class AllStatic
29 #include "utilities/globalDefinitions.hpp"
30
31 typedef enum {
32 NoDetectedVirtualization,
33 XenHVM,
34 XenPVHVM, // mix-mode on Linux aarch64
35 KVM,
36 VMWare,
37 HyperV,
38 HyperVRole,
39 PowerVM, // on AIX or Linux ppc64(le)
40 PowerFullPartitionMode, // on Linux ppc64(le)
41 PowerKVM
42 } VirtualizationType;
43
44 class outputStream;
45 class stringStream;
46 enum class vmIntrinsicID;
47
48 // Abstract_VM_Version provides information about the VM.
49
50 class Abstract_VM_Version: AllStatic {
51 friend class VMStructs;
52 friend class JVMCIVMStructs;
53
54 protected:
55 static const char* _s_vm_release;
56 static const char* _s_internal_vm_info_string;
57
58 // CPU feature flags, can be affected by VM settings.
59 static uint64_t _features;
60
61 static const char* _features_string;
62
63 static const char* _cpu_info_string;
64
65 // Original CPU feature flags, not affected by VM settings.
116 static const char* vm_platform_string();
117 static const char* vm_variant();
118
119 static int vm_major_version() { return _vm_major_version; }
120 static int vm_minor_version() { return _vm_minor_version; }
121 static int vm_security_version() { return _vm_security_version; }
122 static int vm_patch_version() { return _vm_patch_version; }
123 static int vm_build_number() { return _vm_build_number; }
124
125 // Gets the jvm_version_info.jvm_version
126 static unsigned int jvm_version();
127
128 // Internal version providing additional build information
129 static const char* internal_vm_info_string();
130 static const char* jdk_debug_level();
131 static const char* printable_jdk_debug_level();
132
133 static const char* features_string() { return _features_string; }
134
135 static const char* cpu_info_string() { return _cpu_info_string; }
136
137 static VirtualizationType get_detected_virtualization() {
138 return _detected_virtualization;
139 }
140
141 // platforms that need to specialize this
142 // define VM_Version::print_platform_virtualization_info()
143 static void print_platform_virtualization_info(outputStream*) { }
144
145 // does HW support an 8-byte compare-exchange operation?
146 // Required to be true but still dynamically checked at runtime
147 // for platforms that don't set SUPPORTS_NATIVE_CX8
148 static bool supports_cx8() {
149 #ifdef SUPPORTS_NATIVE_CX8
150 return true;
151 #else
152 return _supports_cx8;
153 #endif
154 }
155 // does HW support atomic get-and-set or atomic get-and-add? Used
210
211 protected:
212 // VM_Version statics
213 static const size_t CPU_TYPE_DESC_BUF_SIZE = 256;
214 static const size_t CPU_DETAILED_DESC_BUF_SIZE = 4096;
215
216 static int _no_of_threads;
217 static int _no_of_cores;
218 static int _no_of_sockets;
219 static bool _initialized;
220 static char _cpu_name[CPU_TYPE_DESC_BUF_SIZE];
221 static char _cpu_desc[CPU_DETAILED_DESC_BUF_SIZE];
222
223 public:
224 static int number_of_threads(void);
225 static int number_of_cores(void);
226 static int number_of_sockets(void);
227
228 static const char* cpu_name(void);
229 static const char* cpu_description(void);
230
231 static void get_cpu_features_name(void* features_buffer, stringStream& ss) { return; }
232 static void get_missing_features_name(void* features_buffer, stringStream& ss) { return; }
233
234 // Returns number of bytes required to store cpu features representation
235 static int cpu_features_size() { return 0; }
236
237 // Stores arch dependent cpu features representation in the provided buffer.
238 // Size of the buffer must be same as returned by cpu_features_size()
239 static void store_cpu_features(void* buf) { return; }
240
241 // features_to_test is an opaque object that stores arch specific representation of cpu features
242 static bool supports_features(void* features_to_test) { return false; };
243 };
244
245 #endif // SHARE_RUNTIME_ABSTRACT_VM_VERSION_HPP
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