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 "code/codeCacheExtensions.hpp"
27 #include "memory/universe.hpp"
28 #include "oops/oop.inline.hpp"
29 #include "runtime/arguments.hpp"
30 #include "runtime/vm_version.hpp"
31
32 const char* Abstract_VM_Version::_s_vm_release = Abstract_VM_Version::vm_release();
33 const char* Abstract_VM_Version::_s_internal_vm_info_string = Abstract_VM_Version::internal_vm_info_string();
34 bool Abstract_VM_Version::_supports_cx8 = false;
35 bool Abstract_VM_Version::_supports_atomic_getset4 = false;
36 bool Abstract_VM_Version::_supports_atomic_getset8 = false;
37 bool Abstract_VM_Version::_supports_atomic_getadd4 = false;
38 bool Abstract_VM_Version::_supports_atomic_getadd8 = false;
39 unsigned int Abstract_VM_Version::_logical_processors_per_package = 1U;
40 unsigned int Abstract_VM_Version::_L1_data_cache_line_size = 0;
41 int Abstract_VM_Version::_reserve_for_allocation_prefetch = 0;
42
43 #ifndef HOTSPOT_RELEASE_VERSION
44 #error HOTSPOT_RELEASE_VERSION must be defined
45 #endif
46
47 #ifndef JDK_MAJOR_VERSION
48 #error JDK_MAJOR_VERSION must be defined
49 #endif
50 #ifndef JDK_MINOR_VERSION
51 #error JDK_MINOR_VERSION must be defined
52 #endif
53 #ifndef JDK_MICRO_VERSION
54 #error JDK_MICRO_VERSION must be defined
55 #endif
56 #ifndef JDK_BUILD_NUMBER
57 #error JDK_BUILD_NUMBER must be defined
58 #endif
59
60 #ifndef JRE_RELEASE_VERSION
61 #error JRE_RELEASE_VERSION must be defined
62 #endif
63
64 // NOTE: Builds within Visual Studio do not define the build target in
65 // HOTSPOT_RELEASE_VERSION, so it must be done here
66 #if defined(VISUAL_STUDIO_BUILD) && !defined(PRODUCT)
67 #ifndef HOTSPOT_BUILD_TARGET
68 #error HOTSPOT_BUILD_TARGET must be defined
69 #endif
70 #define VM_RELEASE HOTSPOT_RELEASE_VERSION "-" HOTSPOT_BUILD_TARGET
71 #else
72 #define VM_RELEASE HOTSPOT_RELEASE_VERSION
73 #endif
74
75 // HOTSPOT_RELEASE_VERSION follows the JDK release version naming convention
76 // <major_ver>.<minor_ver>.<micro_ver>[-<identifier>][-<debug_target>][-b<nn>]
77 int Abstract_VM_Version::_vm_major_version = 0;
78 int Abstract_VM_Version::_vm_minor_version = 0;
79 int Abstract_VM_Version::_vm_micro_version = 0;
80 int Abstract_VM_Version::_vm_build_number = 0;
81 bool Abstract_VM_Version::_initialized = false;
82 unsigned int Abstract_VM_Version::_parallel_worker_threads = 0;
83 bool Abstract_VM_Version::_parallel_worker_threads_initialized = false;
84
85 #ifdef ASSERT
86 static void assert_digits(const char * s, const char * message) {
87 for (int i = 0; s[i] != '\0'; i++) {
88 assert(isdigit(s[i]), "%s", message);
89 }
90 }
91 #endif
92
93 static void set_version_field(int * version_field, const char * version_str,
94 const char * const assert_msg) {
95 if (version_str != NULL && *version_str != '\0') {
96 DEBUG_ONLY(assert_digits(version_str, assert_msg));
97 *version_field = atoi(version_str);
98 }
99 }
100
101 void Abstract_VM_Version::initialize() {
102 if (_initialized) {
103 return;
104 }
105
106 set_version_field(&_vm_major_version, JDK_MAJOR_VERSION, "bad major version");
107 set_version_field(&_vm_minor_version, JDK_MINOR_VERSION, "bad minor version");
108 set_version_field(&_vm_micro_version, JDK_MICRO_VERSION, "bad micro version");
109 int offset = (JDK_BUILD_NUMBER != NULL && JDK_BUILD_NUMBER[0] == 'b') ? 1 : 0;
110 set_version_field(&_vm_build_number, &JDK_BUILD_NUMBER[offset],
111 "bad build number");
112
113 _initialized = true;
114 }
115
116 #if defined(_LP64)
117 #define VMLP "64-Bit "
118 #else
119 #define VMLP ""
120 #endif
121
122 #ifndef VMTYPE
123 #ifdef TIERED
124 #define VMTYPE "Server"
125 #else // TIERED
126 #ifdef ZERO
127 #ifdef SHARK
128 #define VMTYPE "Shark"
129 #else // SHARK
130 #define VMTYPE "Zero"
131 #endif // SHARK
132 #else // ZERO
133 #define VMTYPE COMPILER1_PRESENT("Client") \
134 COMPILER2_PRESENT("Server")
135 #endif // ZERO
136 #endif // TIERED
137 #endif
138
139 #ifndef HOTSPOT_VM_DISTRO
140 #error HOTSPOT_VM_DISTRO must be defined
141 #endif
142 #define VMNAME HOTSPOT_VM_DISTRO " " VMLP EMBEDDED_ONLY("Embedded ") VMTYPE " VM"
143
144 const char* Abstract_VM_Version::vm_name() {
145 return VMNAME;
146 }
147
148
149 const char* Abstract_VM_Version::vm_vendor() {
150 #ifdef VENDOR
151 return XSTR(VENDOR);
152 #else
153 return "Oracle Corporation";
154 #endif
155 }
156
157 const char* Abstract_VM_Version::vm_info_string() {
158 if (CodeCacheExtensions::use_pregenerated_interpreter()) {
159 return "interpreted mode, pregenerated";
160 }
161 switch (Arguments::mode()) {
162 case Arguments::_int:
163 return UseSharedSpaces ? "interpreted mode, sharing" : "interpreted mode";
164 case Arguments::_mixed:
165 return UseSharedSpaces ? "mixed mode, sharing" : "mixed mode";
166 case Arguments::_comp:
167 return UseSharedSpaces ? "compiled mode, sharing" : "compiled mode";
168 };
169 ShouldNotReachHere();
170 return "";
171 }
172
173 // NOTE: do *not* use stringStream. this function is called by
174 // fatal error handler. if the crash is in native thread,
175 // stringStream cannot get resource allocated and will SEGV.
176 const char* Abstract_VM_Version::vm_release() {
177 return VM_RELEASE;
178 }
179
180 // NOTE: do *not* use stringStream. this function is called by
181 // fatal error handlers. if the crash is in native thread,
182 // stringStream cannot get resource allocated and will SEGV.
183 const char* Abstract_VM_Version::jre_release_version() {
184 return JRE_RELEASE_VERSION;
185 }
186
187 #define OS LINUX_ONLY("linux") \
188 WINDOWS_ONLY("windows") \
189 SOLARIS_ONLY("solaris") \
190 AIX_ONLY("aix") \
191 BSD_ONLY("bsd")
192
193 #ifndef CPU
194 #ifdef ZERO
195 #define CPU ZERO_LIBARCH
196 #else
197 #define CPU IA32_ONLY("x86") \
198 IA64_ONLY("ia64") \
199 AMD64_ONLY("amd64") \
200 PPC64_ONLY("ppc64") \
201 AARCH64_ONLY("aarch64") \
202 SPARC_ONLY("sparc")
203 #endif // ZERO
204 #endif
205
206 const char *Abstract_VM_Version::vm_platform_string() {
207 return OS "-" CPU;
208 }
209
210 const char* Abstract_VM_Version::internal_vm_info_string() {
211 #ifndef HOTSPOT_BUILD_USER
212 #define HOTSPOT_BUILD_USER unknown
213 #endif
214
215 #ifndef HOTSPOT_BUILD_COMPILER
216 #ifdef _MSC_VER
217 #if _MSC_VER == 1600
218 #define HOTSPOT_BUILD_COMPILER "MS VC++ 10.0 (VS2010)"
219 #elif _MSC_VER == 1700
220 #define HOTSPOT_BUILD_COMPILER "MS VC++ 11.0 (VS2012)"
221 #elif _MSC_VER == 1800
222 #define HOTSPOT_BUILD_COMPILER "MS VC++ 12.0 (VS2013)"
223 #else
224 #define HOTSPOT_BUILD_COMPILER "unknown MS VC++:" XSTR(_MSC_VER)
225 #endif
226 #elif defined(__SUNPRO_CC)
227 #if __SUNPRO_CC == 0x420
228 #define HOTSPOT_BUILD_COMPILER "Workshop 4.2"
229 #elif __SUNPRO_CC == 0x500
230 #define HOTSPOT_BUILD_COMPILER "Workshop 5.0 compat=" XSTR(__SUNPRO_CC_COMPAT)
231 #elif __SUNPRO_CC == 0x520
232 #define HOTSPOT_BUILD_COMPILER "Workshop 5.2 compat=" XSTR(__SUNPRO_CC_COMPAT)
233 #elif __SUNPRO_CC == 0x580
234 #define HOTSPOT_BUILD_COMPILER "Workshop 5.8"
235 #elif __SUNPRO_CC == 0x590
236 #define HOTSPOT_BUILD_COMPILER "Workshop 5.9"
237 #elif __SUNPRO_CC == 0x5100
238 #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u1"
239 #elif __SUNPRO_CC == 0x5120
240 #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u3"
241 #else
242 #define HOTSPOT_BUILD_COMPILER "unknown Workshop:" XSTR(__SUNPRO_CC)
243 #endif
244 #elif defined(__GNUC__)
245 #define HOTSPOT_BUILD_COMPILER "gcc " __VERSION__
246 #elif defined(__IBMCPP__)
247 #define HOTSPOT_BUILD_COMPILER "xlC " XSTR(__IBMCPP__)
248
249 #else
250 #define HOTSPOT_BUILD_COMPILER "unknown compiler"
251 #endif
252 #endif
253
254 #ifndef FLOAT_ARCH
255 #if defined(__SOFTFP__)
256 #define FLOAT_ARCH_STR "-sflt"
257 #else
258 #define FLOAT_ARCH_STR ""
259 #endif
260 #else
261 #define FLOAT_ARCH_STR XSTR(FLOAT_ARCH)
262 #endif
263
264 return VMNAME " (" VM_RELEASE ") for " OS "-" CPU FLOAT_ARCH_STR
265 " JRE (" JRE_RELEASE_VERSION "), built on " __DATE__ " " __TIME__
266 " by " XSTR(HOTSPOT_BUILD_USER) " with " HOTSPOT_BUILD_COMPILER;
267 }
268
269 const char *Abstract_VM_Version::vm_build_user() {
270 return HOTSPOT_BUILD_USER;
271 }
272
273 unsigned int Abstract_VM_Version::jvm_version() {
274 return ((Abstract_VM_Version::vm_major_version() & 0xFF) << 24) |
275 ((Abstract_VM_Version::vm_minor_version() & 0xFF) << 16) |
276 ((Abstract_VM_Version::vm_micro_version() & 0xFF) << 8) |
277 (Abstract_VM_Version::vm_build_number() & 0xFF);
278 }
279
280
281 void VM_Version_init() {
282 VM_Version::initialize();
283
284 #ifndef PRODUCT
285 if (PrintMiscellaneous && Verbose) {
286 char buf[512];
287 os::print_cpu_info(tty, buf, sizeof(buf));
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 }