1 /*
2 * Copyright (c) 1998, 2016, 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 "logging/log.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
35 uint64_t Abstract_VM_Version::_features = 0;
36 const char* Abstract_VM_Version::_features_string = "";
37
38 bool Abstract_VM_Version::_supports_cx8 = false;
39 bool Abstract_VM_Version::_supports_atomic_getset4 = false;
40 bool Abstract_VM_Version::_supports_atomic_getset8 = false;
41 bool Abstract_VM_Version::_supports_atomic_getadd4 = false;
42 bool Abstract_VM_Version::_supports_atomic_getadd8 = false;
43 unsigned int Abstract_VM_Version::_logical_processors_per_package = 1U;
44 unsigned int Abstract_VM_Version::_L1_data_cache_line_size = 0;
45
46 #ifndef HOTSPOT_VERSION_STRING
47 #error HOTSPOT_VERSION_STRING must be defined
48 #endif
49
50 #ifndef VERSION_MAJOR
51 #error VERSION_MAJOR must be defined
52 #endif
53 #ifndef VERSION_MINOR
54 #error VERSION_MINOR must be defined
55 #endif
56 #ifndef VERSION_SECURITY
57 #error VERSION_SECURITY must be defined
58 #endif
59 #ifndef VERSION_PATCH
60 #error VERSION_PATCH must be defined
61 #endif
62 #ifndef VERSION_BUILD
63 #error VERSION_BUILD must be defined
64 #endif
65
66 #ifndef VERSION_STRING
67 #error VERSION_STRING must be defined
68 #endif
69
70 #ifndef DEBUG_LEVEL
71 #error DEBUG_LEVEL must be defined
72 #endif
73
74 #define VM_RELEASE HOTSPOT_VERSION_STRING
75
76 // HOTSPOT_VERSION_STRING equals the JDK VERSION_STRING (unless overridden
77 // in a standalone build).
78 int Abstract_VM_Version::_vm_major_version = VERSION_MAJOR;
79 int Abstract_VM_Version::_vm_minor_version = VERSION_MINOR;
80 int Abstract_VM_Version::_vm_security_version = VERSION_SECURITY;
81 int Abstract_VM_Version::_vm_patch_version = VERSION_PATCH;
82 int Abstract_VM_Version::_vm_build_number = VERSION_BUILD;
83 unsigned int Abstract_VM_Version::_parallel_worker_threads = 0;
84 bool Abstract_VM_Version::_parallel_worker_threads_initialized = false;
85
86 #if defined(_LP64)
87 #define VMLP "64-Bit "
88 #else
89 #define VMLP ""
90 #endif
91
92 #ifndef VMTYPE
93 #ifdef TIERED
94 #define VMTYPE "Server"
95 #else // TIERED
96 #ifdef ZERO
97 #ifdef SHARK
98 #define VMTYPE "Shark"
99 #else // SHARK
100 #define VMTYPE "Zero"
101 #endif // SHARK
102 #else // ZERO
103 #define VMTYPE COMPILER1_PRESENT("Client") \
104 COMPILER2_PRESENT("Server")
105 #endif // ZERO
106 #endif // TIERED
107 #endif
108
109 #ifndef HOTSPOT_VM_DISTRO
110 #error HOTSPOT_VM_DISTRO must be defined
111 #endif
112 #define VMNAME HOTSPOT_VM_DISTRO " " VMLP VMTYPE " VM"
113
114 const char* Abstract_VM_Version::vm_name() {
115 return VMNAME;
116 }
117
118
119 const char* Abstract_VM_Version::vm_vendor() {
120 #ifdef VENDOR
121 return XSTR(VENDOR);
122 #else
123 return "Oracle Corporation";
124 #endif
125 }
126
127
128 const char* Abstract_VM_Version::vm_info_string() {
129 switch (Arguments::mode()) {
130 case Arguments::_int:
131 return UseSharedSpaces ? "interpreted mode, sharing" : "interpreted mode";
132 case Arguments::_mixed:
133 return UseSharedSpaces ? "mixed mode, sharing" : "mixed mode";
134 case Arguments::_comp:
135 return UseSharedSpaces ? "compiled mode, sharing" : "compiled mode";
136 };
137 ShouldNotReachHere();
138 return "";
139 }
140
141 // NOTE: do *not* use stringStream. this function is called by
142 // fatal error handler. if the crash is in native thread,
143 // stringStream cannot get resource allocated and will SEGV.
144 const char* Abstract_VM_Version::vm_release() {
145 return VM_RELEASE;
146 }
147
148 // NOTE: do *not* use stringStream. this function is called by
149 // fatal error handlers. if the crash is in native thread,
150 // stringStream cannot get resource allocated and will SEGV.
151 const char* Abstract_VM_Version::jre_release_version() {
152 return VERSION_STRING;
153 }
154
155 #define OS LINUX_ONLY("linux") \
156 WINDOWS_ONLY("windows") \
157 SOLARIS_ONLY("solaris") \
158 AIX_ONLY("aix") \
159 BSD_ONLY("bsd")
160
161 #ifndef CPU
162 #ifdef ZERO
163 #define CPU ZERO_LIBARCH
164 #elif defined(PPC64)
165 #if defined(VM_LITTLE_ENDIAN)
166 #define CPU "ppc64le"
167 #else
168 #define CPU "ppc64"
169 #endif // PPC64
170 #else
171 #define CPU AARCH64_ONLY("aarch64") \
172 AMD64_ONLY("amd64") \
173 IA32_ONLY("x86") \
174 IA64_ONLY("ia64") \
175 S390_ONLY("s390") \
176 SPARC_ONLY("sparc")
177 #endif // !ZERO
178 #endif // !CPU
179
180 const char *Abstract_VM_Version::vm_platform_string() {
181 return OS "-" CPU;
182 }
183
184 const char* Abstract_VM_Version::internal_vm_info_string() {
185 #ifndef HOTSPOT_BUILD_USER
186 #define HOTSPOT_BUILD_USER unknown
187 #endif
188
189 #ifndef HOTSPOT_BUILD_COMPILER
190 #ifdef _MSC_VER
191 #if _MSC_VER == 1600
192 #define HOTSPOT_BUILD_COMPILER "MS VC++ 10.0 (VS2010)"
193 #elif _MSC_VER == 1700
194 #define HOTSPOT_BUILD_COMPILER "MS VC++ 11.0 (VS2012)"
195 #elif _MSC_VER == 1800
196 #define HOTSPOT_BUILD_COMPILER "MS VC++ 12.0 (VS2013)"
197 #else
198 #define HOTSPOT_BUILD_COMPILER "unknown MS VC++:" XSTR(_MSC_VER)
199 #endif
200 #elif defined(__SUNPRO_CC)
201 #if __SUNPRO_CC == 0x420
202 #define HOTSPOT_BUILD_COMPILER "Workshop 4.2"
203 #elif __SUNPRO_CC == 0x500
204 #define HOTSPOT_BUILD_COMPILER "Workshop 5.0 compat=" XSTR(__SUNPRO_CC_COMPAT)
205 #elif __SUNPRO_CC == 0x520
206 #define HOTSPOT_BUILD_COMPILER "Workshop 5.2 compat=" XSTR(__SUNPRO_CC_COMPAT)
207 #elif __SUNPRO_CC == 0x580
208 #define HOTSPOT_BUILD_COMPILER "Workshop 5.8"
209 #elif __SUNPRO_CC == 0x590
210 #define HOTSPOT_BUILD_COMPILER "Workshop 5.9"
211 #elif __SUNPRO_CC == 0x5100
212 #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u1"
213 #elif __SUNPRO_CC == 0x5120
214 #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u3"
215 #elif __SUNPRO_CC == 0x5130
216 #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u4"
217 #else
218 #define HOTSPOT_BUILD_COMPILER "unknown Workshop:" XSTR(__SUNPRO_CC)
219 #endif
220 #elif defined(__GNUC__)
221 #define HOTSPOT_BUILD_COMPILER "gcc " __VERSION__
222 #elif defined(__IBMCPP__)
223 #define HOTSPOT_BUILD_COMPILER "xlC " XSTR(__IBMCPP__)
224
225 #else
226 #define HOTSPOT_BUILD_COMPILER "unknown compiler"
227 #endif
228 #endif
229
230 #ifndef FLOAT_ARCH
231 #if defined(__SOFTFP__)
232 #define FLOAT_ARCH_STR "-sflt"
233 #else
234 #define FLOAT_ARCH_STR ""
235 #endif
236 #else
237 #define FLOAT_ARCH_STR XSTR(FLOAT_ARCH)
238 #endif
239
240 #define INTERNAL_VERSION_SUFFIX VM_RELEASE ")" \
241 " for " OS "-" CPU FLOAT_ARCH_STR \
242 " JRE (" VERSION_STRING "), built on " __DATE__ " " __TIME__ \
243 " by " XSTR(HOTSPOT_BUILD_USER) " with " HOTSPOT_BUILD_COMPILER
244
245 return strcmp(DEBUG_LEVEL, "release") == 0
246 ? VMNAME " (" INTERNAL_VERSION_SUFFIX
247 : VMNAME " (" DEBUG_LEVEL " " INTERNAL_VERSION_SUFFIX;
248 }
249
250 const char *Abstract_VM_Version::vm_build_user() {
251 return HOTSPOT_BUILD_USER;
252 }
253
254 const char *Abstract_VM_Version::jdk_debug_level() {
255 return DEBUG_LEVEL;
256 }
257
258 const char *Abstract_VM_Version::printable_jdk_debug_level() {
259 // Debug level is not printed for "release" builds
260 return strcmp(DEBUG_LEVEL, "release") == 0 ? "" : DEBUG_LEVEL " ";
261 }
262
263 unsigned int Abstract_VM_Version::jvm_version() {
264 return ((Abstract_VM_Version::vm_major_version() & 0xFF) << 24) |
265 ((Abstract_VM_Version::vm_minor_version() & 0xFF) << 16) |
266 ((Abstract_VM_Version::vm_security_version() & 0xFF) << 8) |
267 (Abstract_VM_Version::vm_build_number() & 0xFF);
268 }
269
270
271 void VM_Version_init() {
272 VM_Version::initialize();
273
274 if (log_is_enabled(Info, os, cpu)) {
275 char buf[1024];
276 ResourceMark rm;
277 outputStream* log = Log(os, cpu)::info_stream();
278 os::print_cpu_info(log, buf, sizeof(buf));
279 }
280 }
281
282 unsigned int Abstract_VM_Version::nof_parallel_worker_threads(
283 unsigned int num,
284 unsigned int den,
285 unsigned int switch_pt) {
286 if (FLAG_IS_DEFAULT(ParallelGCThreads)) {
287 assert(ParallelGCThreads == 0, "Default ParallelGCThreads is not 0");
288 unsigned int threads;
289 // For very large machines, there are diminishing returns
290 // for large numbers of worker threads. Instead of
291 // hogging the whole system, use a fraction of the workers for every
292 // processor after the first 8. For example, on a 72 cpu machine
293 // and a chosen fraction of 5/8
294 // use 8 + (72 - 8) * (5/8) == 48 worker threads.
295 unsigned int ncpus = (unsigned int) os::initial_active_processor_count();
296 threads = (ncpus <= switch_pt) ?
297 ncpus :
298 (switch_pt + ((ncpus - switch_pt) * num) / den);
299 #ifndef _LP64
300 // On 32-bit binaries the virtual address space available to the JVM
301 // is usually limited to 2-3 GB (depends on the platform).
302 // Do not use up address space with too many threads (stacks and per-thread
303 // data). Note that x86 apps running on Win64 have 2 stacks per thread.
304 // GC may more generally scale down threads by max heap size (etc), but the
305 // consequences of over-provisioning threads are higher on 32-bit JVMS,
306 // so add hard limit here:
307 threads = MIN2(threads, (2*switch_pt));
308 #endif
309 return threads;
310 } else {
311 return ParallelGCThreads;
312 }
313 }
314
315 unsigned int Abstract_VM_Version::calc_parallel_worker_threads() {
316 return nof_parallel_worker_threads(5, 8, 8);
317 }
318
319
320 // Does not set the _initialized flag since it is
321 // a global flag.
322 unsigned int Abstract_VM_Version::parallel_worker_threads() {
323 if (!_parallel_worker_threads_initialized) {
324 if (FLAG_IS_DEFAULT(ParallelGCThreads)) {
325 _parallel_worker_threads = VM_Version::calc_parallel_worker_threads();
326 } else {
327 _parallel_worker_threads = ParallelGCThreads;
328 }
329 _parallel_worker_threads_initialized = true;
330 }
331 return _parallel_worker_threads;
332 }