1 /*
2 * Copyright (c) 1998, 2014, 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 int Abstract_VM_Version::_reserve_for_allocation_prefetch = 0;
40
41 #ifndef HOTSPOT_RELEASE_VERSION
42 #error HOTSPOT_RELEASE_VERSION must be defined
43 #endif
44
45 #ifndef JDK_MAJOR_VERSION
46 #error JDK_MAJOR_VERSION must be defined
47 #endif
48 #ifndef JDK_MINOR_VERSION
49 #error JDK_MINOR_VERSION must be defined
50 #endif
51 #ifndef JDK_MICRO_VERSION
52 #error JDK_MICRO_VERSION must be defined
53 #endif
54 #ifndef JDK_BUILD_NUMBER
55 #error JDK_BUILD_NUMBER must be defined
56 #endif
57
58 #ifndef JRE_RELEASE_VERSION
59 #error JRE_RELEASE_VERSION must be defined
60 #endif
61
62 // NOTE: Builds within Visual Studio do not define the build target in
63 // HOTSPOT_RELEASE_VERSION, so it must be done here
64 #if defined(VISUAL_STUDIO_BUILD) && !defined(PRODUCT)
65 #ifndef HOTSPOT_BUILD_TARGET
66 #error HOTSPOT_BUILD_TARGET must be defined
67 #endif
68 #define VM_RELEASE HOTSPOT_RELEASE_VERSION "-" HOTSPOT_BUILD_TARGET
69 #else
70 #define VM_RELEASE HOTSPOT_RELEASE_VERSION
71 #endif
72
73 // HOTSPOT_RELEASE_VERSION follows the JDK release version naming convention
74 // <major_ver>.<minor_ver>.<micro_ver>[-<identifier>][-<debug_target>][-b<nn>]
75 int Abstract_VM_Version::_vm_major_version = 0;
76 int Abstract_VM_Version::_vm_minor_version = 0;
77 int Abstract_VM_Version::_vm_micro_version = 0;
78 int Abstract_VM_Version::_vm_build_number = 0;
79 bool Abstract_VM_Version::_initialized = false;
80 int Abstract_VM_Version::_parallel_worker_threads = 0;
81 bool Abstract_VM_Version::_parallel_worker_threads_initialized = false;
82
83 #ifdef ASSERT
84 static void assert_digits(const char * s, const char * message) {
85 for (int i = 0; s[i] != '\0'; i++) {
86 assert(isdigit(s[i]), message);
87 }
88 }
89 #endif
90
91 static void set_version_field(int * version_field, const char * version_str,
92 const char * const assert_msg) {
93 if (version_str != NULL && *version_str != '\0') {
94 DEBUG_ONLY(assert_digits(version_str, assert_msg));
95 *version_field = atoi(version_str);
96 }
97 }
98
99 void Abstract_VM_Version::initialize() {
100 if (_initialized) {
101 return;
102 }
103
104 set_version_field(&_vm_major_version, JDK_MAJOR_VERSION, "bad major version");
105 set_version_field(&_vm_minor_version, JDK_MINOR_VERSION, "bad minor version");
106 set_version_field(&_vm_micro_version, JDK_MICRO_VERSION, "bad micro version");
107 int offset = (JDK_BUILD_NUMBER != NULL && JDK_BUILD_NUMBER[0] == 'b') ? 1 : 0;
108 set_version_field(&_vm_build_number, &JDK_BUILD_NUMBER[offset],
109 "bad build number");
110
111 _initialized = true;
112 }
113
114 #if defined(_LP64)
115 #define VMLP "64-Bit "
116 #else
117 #define VMLP ""
118 #endif
119
120 #ifndef VMTYPE
121 #ifdef TIERED
122 #define VMTYPE "Server"
123 #else // TIERED
124 #ifdef ZERO
125 #ifdef SHARK
126 #define VMTYPE "Shark"
127 #else // SHARK
128 #define VMTYPE "Zero"
129 #endif // SHARK
130 #else // ZERO
131 #define VMTYPE COMPILER1_PRESENT("Client") \
132 COMPILER2_PRESENT("Server")
133 #endif // ZERO
134 #endif // TIERED
135 #endif
136
137 #ifndef HOTSPOT_VM_DISTRO
138 #error HOTSPOT_VM_DISTRO must be defined
139 #endif
140 #define VMNAME HOTSPOT_VM_DISTRO " " VMLP EMBEDDED_ONLY("Embedded ") VMTYPE " VM"
141
142 const char* Abstract_VM_Version::vm_name() {
143 return VMNAME;
144 }
145
146
147 const char* Abstract_VM_Version::vm_vendor() {
148 #ifdef VENDOR
149 return XSTR(VENDOR);
150 #else
151 return "Oracle Corporation";
152 #endif
153 }
154
155
156 const char* Abstract_VM_Version::vm_info_string() {
157 switch (Arguments::mode()) {
158 case Arguments::_int:
159 return UseSharedSpaces ? "interpreted mode, sharing" : "interpreted mode";
160 case Arguments::_mixed:
161 return UseSharedSpaces ? "mixed mode, sharing" : "mixed mode";
162 case Arguments::_comp:
163 return UseSharedSpaces ? "compiled mode, sharing" : "compiled mode";
164 };
165 ShouldNotReachHere();
166 return "";
167 }
168
169 // NOTE: do *not* use stringStream. this function is called by
170 // fatal error handler. if the crash is in native thread,
171 // stringStream cannot get resource allocated and will SEGV.
172 const char* Abstract_VM_Version::vm_release() {
173 return VM_RELEASE;
174 }
175
176 // NOTE: do *not* use stringStream. this function is called by
177 // fatal error handlers. if the crash is in native thread,
178 // stringStream cannot get resource allocated and will SEGV.
179 const char* Abstract_VM_Version::jre_release_version() {
180 return JRE_RELEASE_VERSION;
181 }
182
183 #define OS LINUX_ONLY("linux") \
184 WINDOWS_ONLY("windows") \
185 SOLARIS_ONLY("solaris") \
186 AIX_ONLY("aix") \
187 BSD_ONLY("bsd")
188
189 #ifdef ZERO
190 #define CPU ZERO_LIBARCH
191 #else
192 #define CPU IA32_ONLY("x86") \
193 IA64_ONLY("ia64") \
194 AMD64_ONLY("amd64") \
195 ARM_ONLY("arm") \
196 PPC32_ONLY("ppc") \
197 PPC64_ONLY("ppc64") \
198 SPARC_ONLY("sparc")
199 #endif // ZERO
200
201 const char *Abstract_VM_Version::vm_platform_string() {
202 return OS "-" CPU;
203 }
204
205 const char* Abstract_VM_Version::internal_vm_info_string() {
206 #ifndef HOTSPOT_BUILD_USER
207 #define HOTSPOT_BUILD_USER unknown
208 #endif
209
210 #ifndef HOTSPOT_BUILD_COMPILER
211 #ifdef _MSC_VER
212 #if _MSC_VER == 1600
213 #define HOTSPOT_BUILD_COMPILER "MS VC++ 10.0 (VS2010)"
214 #elif _MSC_VER == 1700
215 #define HOTSPOT_BUILD_COMPILER "MS VC++ 11.0 (VS2012)"
216 #elif _MSC_VER == 1800
217 #define HOTSPOT_BUILD_COMPILER "MS VC++ 12.0 (VS2013)"
218 #else
219 #define HOTSPOT_BUILD_COMPILER "unknown MS VC++:" XSTR(_MSC_VER)
220 #endif
221 #elif defined(__SUNPRO_CC)
222 #if __SUNPRO_CC == 0x420
223 #define HOTSPOT_BUILD_COMPILER "Workshop 4.2"
224 #elif __SUNPRO_CC == 0x500
225 #define HOTSPOT_BUILD_COMPILER "Workshop 5.0 compat=" XSTR(__SUNPRO_CC_COMPAT)
226 #elif __SUNPRO_CC == 0x520
227 #define HOTSPOT_BUILD_COMPILER "Workshop 5.2 compat=" XSTR(__SUNPRO_CC_COMPAT)
228 #elif __SUNPRO_CC == 0x580
229 #define HOTSPOT_BUILD_COMPILER "Workshop 5.8"
230 #elif __SUNPRO_CC == 0x590
231 #define HOTSPOT_BUILD_COMPILER "Workshop 5.9"
232 #elif __SUNPRO_CC == 0x5100
233 #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u1"
234 #elif __SUNPRO_CC == 0x5120
235 #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u3"
236 #else
237 #define HOTSPOT_BUILD_COMPILER "unknown Workshop:" XSTR(__SUNPRO_CC)
238 #endif
239 #elif defined(__GNUC__)
240 #define HOTSPOT_BUILD_COMPILER "gcc " __VERSION__
241 #elif defined(__IBMCPP__)
242 #define HOTSPOT_BUILD_COMPILER "xlC " XSTR(__IBMCPP__)
243
244 #else
245 #define HOTSPOT_BUILD_COMPILER "unknown compiler"
246 #endif
247 #endif
248
249 #ifndef FLOAT_ARCH
250 #if defined(__SOFTFP__)
251 #define FLOAT_ARCH_STR "-sflt"
252 #elif defined(E500V2)
253 #define FLOAT_ARCH_STR "-e500v2"
254 #elif defined(ARM)
255 #define FLOAT_ARCH_STR "-vfp"
256 #elif defined(PPC32)
257 #define FLOAT_ARCH_STR "-hflt"
258 #else
259 #define FLOAT_ARCH_STR ""
260 #endif
261 #else
262 #define FLOAT_ARCH_STR XSTR(FLOAT_ARCH)
263 #endif
264
265 return VMNAME " (" VM_RELEASE ") for " OS "-" CPU FLOAT_ARCH_STR
266 " JRE (" JRE_RELEASE_VERSION "), built on " __DATE__ " " __TIME__
267 " by " XSTR(HOTSPOT_BUILD_USER) " with " HOTSPOT_BUILD_COMPILER;
268 }
269
270 const char *Abstract_VM_Version::vm_build_user() {
271 return HOTSPOT_BUILD_USER;
272 }
273
274 unsigned int Abstract_VM_Version::jvm_version() {
275 return ((Abstract_VM_Version::vm_major_version() & 0xFF) << 24) |
276 ((Abstract_VM_Version::vm_minor_version() & 0xFF) << 16) |
277 ((Abstract_VM_Version::vm_micro_version() & 0xFF) << 8) |
278 (Abstract_VM_Version::vm_build_number() & 0xFF);
279 }
280
281
282 void VM_Version_init() {
283 VM_Version::initialize();
284
285 #ifndef PRODUCT
286 if (PrintMiscellaneous && Verbose) {
287 os::print_cpu_info(tty);
288 }
289 #endif
290 }
291
292 unsigned int Abstract_VM_Version::nof_parallel_worker_threads(
293 unsigned int num,
294 unsigned int den,
295 unsigned int switch_pt) {
296 if (FLAG_IS_DEFAULT(ParallelGCThreads)) {
297 assert(ParallelGCThreads == 0, "Default ParallelGCThreads is not 0");
298 // For very large machines, there are diminishing returns
299 // for large numbers of worker threads. Instead of
300 // hogging the whole system, use a fraction of the workers for every
301 // processor after the first 8. For example, on a 72 cpu machine
302 // and a chosen fraction of 5/8
303 // use 8 + (72 - 8) * (5/8) == 48 worker threads.
304 unsigned int ncpus = (unsigned int) os::active_processor_count();
305 return (ncpus <= switch_pt) ?
306 ncpus :
307 (switch_pt + ((ncpus - switch_pt) * num) / den);
308 } else {
309 return ParallelGCThreads;
310 }
311 }
312
313 unsigned int Abstract_VM_Version::calc_parallel_worker_threads() {
314 return nof_parallel_worker_threads(5, 8, 8);
315 }
316
317
318 // Does not set the _initialized flag since it is
319 // a global flag.
320 unsigned int Abstract_VM_Version::parallel_worker_threads() {
321 if (!_parallel_worker_threads_initialized) {
322 if (FLAG_IS_DEFAULT(ParallelGCThreads)) {
323 _parallel_worker_threads = VM_Version::calc_parallel_worker_threads();
324 } else {
325 _parallel_worker_threads = ParallelGCThreads;
326 }
327 _parallel_worker_threads_initialized = true;
328 }
329 return _parallel_worker_threads;
330 }