1 /*
2 * Copyright (c) 1998, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "memory/universe.hpp"
27 #include "oops/oop.inline.hpp"
28 #include "runtime/arguments.hpp"
29 #include "runtime/vm_version.hpp"
30
31 const char* Abstract_VM_Version::_s_vm_release = Abstract_VM_Version::vm_release();
32 const char* Abstract_VM_Version::_s_internal_vm_info_string = Abstract_VM_Version::internal_vm_info_string();
33 bool Abstract_VM_Version::_supports_cx8 = false;
34 bool Abstract_VM_Version::_supports_atomic_getset4 = false;
35 bool Abstract_VM_Version::_supports_atomic_getset8 = false;
36 bool Abstract_VM_Version::_supports_atomic_getadd4 = false;
37 bool Abstract_VM_Version::_supports_atomic_getadd8 = false;
38 unsigned int Abstract_VM_Version::_logical_processors_per_package = 1U;
39 unsigned int Abstract_VM_Version::_L1_data_cache_line_size = 0;
40 int Abstract_VM_Version::_reserve_for_allocation_prefetch = 0;
41
42 #ifndef HOTSPOT_RELEASE_VERSION
43 #error HOTSPOT_RELEASE_VERSION must be defined
44 #endif
45
46 #ifndef JDK_MAJOR_VERSION
47 #error JDK_MAJOR_VERSION must be defined
48 #endif
49 #ifndef JDK_MINOR_VERSION
50 #error JDK_MINOR_VERSION must be defined
51 #endif
52 #ifndef JDK_MICRO_VERSION
53 #error JDK_MICRO_VERSION must be defined
54 #endif
55 #ifndef JDK_BUILD_NUMBER
56 #error JDK_BUILD_NUMBER must be defined
57 #endif
58
59 #ifndef JRE_RELEASE_VERSION
60 #error JRE_RELEASE_VERSION must be defined
61 #endif
62
63 // NOTE: Builds within Visual Studio do not define the build target in
64 // HOTSPOT_RELEASE_VERSION, so it must be done here
65 #if defined(VISUAL_STUDIO_BUILD) && !defined(PRODUCT)
66 #ifndef HOTSPOT_BUILD_TARGET
67 #error HOTSPOT_BUILD_TARGET must be defined
68 #endif
69 #define VM_RELEASE HOTSPOT_RELEASE_VERSION "-" HOTSPOT_BUILD_TARGET
70 #else
71 #define VM_RELEASE HOTSPOT_RELEASE_VERSION
72 #endif
73
74 // HOTSPOT_RELEASE_VERSION follows the JDK release version naming convention
75 // <major_ver>.<minor_ver>.<micro_ver>[-<identifier>][-<debug_target>][-b<nn>]
76 int Abstract_VM_Version::_vm_major_version = 0;
77 int Abstract_VM_Version::_vm_minor_version = 0;
78 int Abstract_VM_Version::_vm_micro_version = 0;
79 int Abstract_VM_Version::_vm_build_number = 0;
80 bool Abstract_VM_Version::_initialized = false;
81 unsigned int Abstract_VM_Version::_parallel_worker_threads = 0;
82 bool Abstract_VM_Version::_parallel_worker_threads_initialized = false;
83
84 #ifdef ASSERT
85 static void assert_digits(const char * s, const char * message) {
86 for (int i = 0; s[i] != '\0'; i++) {
87 assert(isdigit(s[i]), message);
88 }
89 }
90 #endif
91
92 static void set_version_field(int * version_field, const char * version_str,
93 const char * const assert_msg) {
94 if (version_str != NULL && *version_str != '\0') {
95 DEBUG_ONLY(assert_digits(version_str, assert_msg));
96 *version_field = atoi(version_str);
97 }
98 }
99
100 void Abstract_VM_Version::initialize() {
101 if (_initialized) {
102 return;
103 }
104
105 set_version_field(&_vm_major_version, JDK_MAJOR_VERSION, "bad major version");
106 set_version_field(&_vm_minor_version, JDK_MINOR_VERSION, "bad minor version");
107 set_version_field(&_vm_micro_version, JDK_MICRO_VERSION, "bad micro version");
108 int offset = (JDK_BUILD_NUMBER != NULL && JDK_BUILD_NUMBER[0] == 'b') ? 1 : 0;
109 set_version_field(&_vm_build_number, &JDK_BUILD_NUMBER[offset],
110 "bad build number");
111
112 _initialized = true;
113 }
114
115 #if defined(_LP64)
116 #define VMLP "64-Bit "
117 #else
118 #define VMLP ""
119 #endif
120
121 #ifndef VMTYPE
122 #ifdef TIERED
123 #define VMTYPE "Server"
124 #else // TIERED
125 #ifdef ZERO
126 #ifdef SHARK
127 #define VMTYPE "Shark"
128 #else // SHARK
129 #define VMTYPE "Zero"
130 #endif // SHARK
131 #else // ZERO
132 #define VMTYPE COMPILER1_PRESENT("Client") \
133 COMPILER2_PRESENT("Server")
134 #endif // ZERO
135 #endif // TIERED
136 #endif
137
138 #ifndef HOTSPOT_VM_DISTRO
139 #error HOTSPOT_VM_DISTRO must be defined
140 #endif
141 #define VMNAME HOTSPOT_VM_DISTRO " " VMLP EMBEDDED_ONLY("Embedded ") VMTYPE " VM"
142
143 const char* Abstract_VM_Version::vm_name() {
144 return VMNAME;
145 }
146
147
148 const char* Abstract_VM_Version::vm_vendor() {
149 #ifdef VENDOR
150 return XSTR(VENDOR);
151 #else
152 return "Oracle Corporation";
153 #endif
154 }
155
156
157 const char* Abstract_VM_Version::vm_info_string() {
158 switch (Arguments::mode()) {
159 case Arguments::_int:
160 return UseSharedSpaces ? "interpreted mode, sharing" : "interpreted mode";
161 case Arguments::_mixed:
162 return UseSharedSpaces ? "mixed mode, sharing" : "mixed mode";
163 case Arguments::_comp:
164 return UseSharedSpaces ? "compiled mode, sharing" : "compiled mode";
165 };
166 ShouldNotReachHere();
167 return "";
168 }
169
170 // NOTE: do *not* use stringStream. this function is called by
171 // fatal error handler. if the crash is in native thread,
172 // stringStream cannot get resource allocated and will SEGV.
173 const char* Abstract_VM_Version::vm_release() {
174 return VM_RELEASE;
175 }
176
177 // NOTE: do *not* use stringStream. this function is called by
178 // fatal error handlers. if the crash is in native thread,
179 // stringStream cannot get resource allocated and will SEGV.
180 const char* Abstract_VM_Version::jre_release_version() {
181 return JRE_RELEASE_VERSION;
182 }
183
184 #define OS LINUX_ONLY("linux") \
185 WINDOWS_ONLY("windows") \
186 SOLARIS_ONLY("solaris") \
187 AIX_ONLY("aix") \
188 BSD_ONLY("bsd")
189
190 #ifndef CPU
191 #ifdef ZERO
192 #define CPU ZERO_LIBARCH
193 #else
194 #define CPU IA32_ONLY("x86") \
195 IA64_ONLY("ia64") \
196 AMD64_ONLY("amd64") \
197 PPC64_ONLY("ppc64") \
198 AARCH64_ONLY("aarch64") \
199 SPARC_ONLY("sparc")
200 #endif // ZERO
201 #endif
202
203 const char *Abstract_VM_Version::vm_platform_string() {
204 return OS "-" CPU;
205 }
206
207 const char* Abstract_VM_Version::internal_vm_info_string() {
208 #ifndef HOTSPOT_BUILD_USER
209 #define HOTSPOT_BUILD_USER unknown
210 #endif
211
212 #ifndef HOTSPOT_BUILD_COMPILER
213 #ifdef _MSC_VER
214 #if _MSC_VER == 1600
215 #define HOTSPOT_BUILD_COMPILER "MS VC++ 10.0 (VS2010)"
216 #elif _MSC_VER == 1700
217 #define HOTSPOT_BUILD_COMPILER "MS VC++ 11.0 (VS2012)"
218 #elif _MSC_VER == 1800
219 #define HOTSPOT_BUILD_COMPILER "MS VC++ 12.0 (VS2013)"
220 #else
221 #define HOTSPOT_BUILD_COMPILER "unknown MS VC++:" XSTR(_MSC_VER)
222 #endif
223 #elif defined(__SUNPRO_CC)
224 #if __SUNPRO_CC == 0x420
225 #define HOTSPOT_BUILD_COMPILER "Workshop 4.2"
226 #elif __SUNPRO_CC == 0x500
227 #define HOTSPOT_BUILD_COMPILER "Workshop 5.0 compat=" XSTR(__SUNPRO_CC_COMPAT)
228 #elif __SUNPRO_CC == 0x520
229 #define HOTSPOT_BUILD_COMPILER "Workshop 5.2 compat=" XSTR(__SUNPRO_CC_COMPAT)
230 #elif __SUNPRO_CC == 0x580
231 #define HOTSPOT_BUILD_COMPILER "Workshop 5.8"
232 #elif __SUNPRO_CC == 0x590
233 #define HOTSPOT_BUILD_COMPILER "Workshop 5.9"
234 #elif __SUNPRO_CC == 0x5100
235 #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u1"
236 #elif __SUNPRO_CC == 0x5120
237 #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u3"
238 #else
239 #define HOTSPOT_BUILD_COMPILER "unknown Workshop:" XSTR(__SUNPRO_CC)
240 #endif
241 #elif defined(__GNUC__)
242 #define HOTSPOT_BUILD_COMPILER "gcc " __VERSION__
243 #elif defined(__IBMCPP__)
244 #define HOTSPOT_BUILD_COMPILER "xlC " XSTR(__IBMCPP__)
245
246 #else
247 #define HOTSPOT_BUILD_COMPILER "unknown compiler"
248 #endif
249 #endif
250
251 #ifndef FLOAT_ARCH
252 #if defined(__SOFTFP__)
253 #define FLOAT_ARCH_STR "-sflt"
254 #else
255 #define FLOAT_ARCH_STR ""
256 #endif
257 #else
258 #define FLOAT_ARCH_STR XSTR(FLOAT_ARCH)
259 #endif
260
261 return VMNAME " (" VM_RELEASE ") for " OS "-" CPU FLOAT_ARCH_STR
262 " JRE (" JRE_RELEASE_VERSION "), built on " __DATE__ " " __TIME__
263 " by " XSTR(HOTSPOT_BUILD_USER) " with " HOTSPOT_BUILD_COMPILER;
264 }
265
266 const char *Abstract_VM_Version::vm_build_user() {
267 return HOTSPOT_BUILD_USER;
268 }
269
270 unsigned int Abstract_VM_Version::jvm_version() {
271 return ((Abstract_VM_Version::vm_major_version() & 0xFF) << 24) |
272 ((Abstract_VM_Version::vm_minor_version() & 0xFF) << 16) |
273 ((Abstract_VM_Version::vm_micro_version() & 0xFF) << 8) |
274 (Abstract_VM_Version::vm_build_number() & 0xFF);
275 }
276
277
278 void VM_Version_init() {
279 VM_Version::initialize();
280
281 #ifndef PRODUCT
282 if (PrintMiscellaneous && Verbose) {
283 os::print_cpu_info(tty);
284 }
285 #endif
286 }
287
288 unsigned int Abstract_VM_Version::nof_parallel_worker_threads(
289 unsigned int num,
290 unsigned int den,
291 unsigned int switch_pt) {
292 if (FLAG_IS_DEFAULT(ParallelGCThreads)) {
293 assert(ParallelGCThreads == 0, "Default ParallelGCThreads is not 0");
294 // For very large machines, there are diminishing returns
295 // for large numbers of worker threads. Instead of
296 // hogging the whole system, use a fraction of the workers for every
297 // processor after the first 8. For example, on a 72 cpu machine
298 // and a chosen fraction of 5/8
299 // use 8 + (72 - 8) * (5/8) == 48 worker threads.
300 unsigned int ncpus = (unsigned int) os::active_processor_count();
301 return (ncpus <= switch_pt) ?
302 ncpus :
303 (switch_pt + ((ncpus - switch_pt) * num) / den);
304 } else {
305 return ParallelGCThreads;
306 }
307 }
308
309 unsigned int Abstract_VM_Version::calc_parallel_worker_threads() {
310 return nof_parallel_worker_threads(5, 8, 8);
311 }
312
313
314 // Does not set the _initialized flag since it is
315 // a global flag.
316 unsigned int Abstract_VM_Version::parallel_worker_threads() {
317 if (!_parallel_worker_threads_initialized) {
318 if (FLAG_IS_DEFAULT(ParallelGCThreads)) {
319 _parallel_worker_threads = VM_Version::calc_parallel_worker_threads();
320 } else {
321 _parallel_worker_threads = ParallelGCThreads;
322 }
323 _parallel_worker_threads_initialized = true;
324 }
325 return _parallel_worker_threads;
326 }