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 "code/codeCacheExtensions.hpp"
27 #include "logging/log.hpp"
28 #include "memory/universe.hpp"
29 #include "oops/oop.inline.hpp"
30 #include "runtime/arguments.hpp"
31 #include "runtime/vm_version.hpp"
32
33 const char* Abstract_VM_Version::_s_vm_release = Abstract_VM_Version::vm_release();
34 const char* Abstract_VM_Version::_s_internal_vm_info_string = Abstract_VM_Version::internal_vm_info_string();
35
36 uint64_t Abstract_VM_Version::_features = 0;
37 const char* Abstract_VM_Version::_features_string = "";
38
39 bool Abstract_VM_Version::_supports_cx8 = false;
40 bool Abstract_VM_Version::_supports_atomic_getset4 = false;
41 bool Abstract_VM_Version::_supports_atomic_getset8 = false;
42 bool Abstract_VM_Version::_supports_atomic_getadd4 = false;
43 bool Abstract_VM_Version::_supports_atomic_getadd8 = false;
44 unsigned int Abstract_VM_Version::_logical_processors_per_package = 1U;
45 unsigned int Abstract_VM_Version::_L1_data_cache_line_size = 0;
46
47 #ifndef HOTSPOT_VERSION_STRING
48 #error HOTSPOT_VERSION_STRING must be defined
49 #endif
50
51 #ifndef VERSION_MAJOR
52 #error VERSION_MAJOR must be defined
53 #endif
54 #ifndef VERSION_MINOR
55 #error VERSION_MINOR must be defined
56 #endif
57 #ifndef VERSION_SECURITY
58 #error VERSION_SECURITY must be defined
59 #endif
60 #ifndef VERSION_PATCH
61 #error VERSION_PATCH must be defined
62 #endif
63 #ifndef VERSION_BUILD
64 #error VERSION_BUILD must be defined
65 #endif
66
67 #ifndef VERSION_STRING
68 #error VERSION_STRING must be defined
69 #endif
70
71 #ifndef DEBUG_LEVEL
72 #error DEBUG_LEVEL must be defined
73 #endif
74
75 #define VM_RELEASE HOTSPOT_VERSION_STRING
76
77 // HOTSPOT_VERSION_STRING equals the JDK VERSION_STRING (unless overridden
78 // in a standalone build).
79 int Abstract_VM_Version::_vm_major_version = VERSION_MAJOR;
80 int Abstract_VM_Version::_vm_minor_version = VERSION_MINOR;
81 int Abstract_VM_Version::_vm_security_version = VERSION_SECURITY;
82 int Abstract_VM_Version::_vm_patch_version = VERSION_PATCH;
83 int Abstract_VM_Version::_vm_build_number = VERSION_BUILD;
84 unsigned int Abstract_VM_Version::_parallel_worker_threads = 0;
85 bool Abstract_VM_Version::_parallel_worker_threads_initialized = false;
86
87 #if defined(_LP64)
88 #define VMLP "64-Bit "
89 #else
90 #define VMLP ""
91 #endif
92
93 #ifndef VMTYPE
94 #ifdef TIERED
95 #define VMTYPE "Server"
96 #else // TIERED
97 #ifdef ZERO
98 #ifdef SHARK
99 #define VMTYPE "Shark"
100 #else // SHARK
101 #define VMTYPE "Zero"
102 #endif // SHARK
103 #else // ZERO
104 #define VMTYPE COMPILER1_PRESENT("Client") \
105 COMPILER2_PRESENT("Server")
106 #endif // ZERO
107 #endif // TIERED
108 #endif
109
110 #ifndef HOTSPOT_VM_DISTRO
111 #error HOTSPOT_VM_DISTRO must be defined
112 #endif
113 #define VMNAME HOTSPOT_VM_DISTRO " " VMLP VMTYPE " VM"
114
115 const char* Abstract_VM_Version::vm_name() {
116 return VMNAME;
117 }
118
119
120 const char* Abstract_VM_Version::vm_vendor() {
121 #ifdef VENDOR
122 return XSTR(VENDOR);
123 #else
124 return "Oracle Corporation";
125 #endif
126 }
127
128
129 const char* Abstract_VM_Version::vm_info_string() {
130 if (CodeCacheExtensions::use_pregenerated_interpreter()) {
131 return "interpreted mode, pregenerated";
132 }
133 switch (Arguments::mode()) {
134 case Arguments::_int:
135 return UseSharedSpaces ? "interpreted mode, sharing" : "interpreted mode";
136 case Arguments::_mixed:
137 if (UseSharedSpaces) {
138 if (UseAOT) {
139 return "mixed mode, aot, sharing";
140 } else {
141 return "mixed mode, sharing";
142 }
143 } else {
144 if (UseAOT) {
145 return "mixed mode, aot";
146 } else {
147 return "mixed mode";
148 }
149 }
150 case Arguments::_comp:
151 return UseSharedSpaces ? "compiled mode, sharing" : "compiled mode";
152 };
153 ShouldNotReachHere();
154 return "";
155 }
156
157 // NOTE: do *not* use stringStream. this function is called by
158 // fatal error handler. if the crash is in native thread,
159 // stringStream cannot get resource allocated and will SEGV.
160 const char* Abstract_VM_Version::vm_release() {
161 return VM_RELEASE;
162 }
163
164 // NOTE: do *not* use stringStream. this function is called by
165 // fatal error handlers. if the crash is in native thread,
166 // stringStream cannot get resource allocated and will SEGV.
167 const char* Abstract_VM_Version::jre_release_version() {
168 return VERSION_STRING;
169 }
170
171 #define OS LINUX_ONLY("linux") \
172 WINDOWS_ONLY("windows") \
173 SOLARIS_ONLY("solaris") \
174 AIX_ONLY("aix") \
175 BSD_ONLY("bsd")
176
177 #ifndef CPU
178 #ifdef ZERO
179 #define CPU ZERO_LIBARCH
180 #elif defined(PPC64)
181 #if defined(VM_LITTLE_ENDIAN)
182 #define CPU "ppc64le"
183 #else
184 #define CPU "ppc64"
185 #endif // PPC64
186 #else
187 #define CPU AARCH64_ONLY("aarch64") \
188 AMD64_ONLY("amd64") \
189 IA32_ONLY("x86") \
190 IA64_ONLY("ia64") \
191 S390_ONLY("s390") \
192 SPARC_ONLY("sparc")
193 #endif // !ZERO
194 #endif // !CPU
195
196 const char *Abstract_VM_Version::vm_platform_string() {
197 return OS "-" CPU;
198 }
199
200 const char* Abstract_VM_Version::internal_vm_info_string() {
201 #ifndef HOTSPOT_BUILD_USER
202 #define HOTSPOT_BUILD_USER unknown
203 #endif
204
205 #ifndef HOTSPOT_BUILD_COMPILER
206 #ifdef _MSC_VER
207 #if _MSC_VER == 1600
208 #define HOTSPOT_BUILD_COMPILER "MS VC++ 10.0 (VS2010)"
209 #elif _MSC_VER == 1700
210 #define HOTSPOT_BUILD_COMPILER "MS VC++ 11.0 (VS2012)"
211 #elif _MSC_VER == 1800
212 #define HOTSPOT_BUILD_COMPILER "MS VC++ 12.0 (VS2013)"
213 #else
214 #define HOTSPOT_BUILD_COMPILER "unknown MS VC++:" XSTR(_MSC_VER)
215 #endif
216 #elif defined(__SUNPRO_CC)
217 #if __SUNPRO_CC == 0x420
218 #define HOTSPOT_BUILD_COMPILER "Workshop 4.2"
219 #elif __SUNPRO_CC == 0x500
220 #define HOTSPOT_BUILD_COMPILER "Workshop 5.0 compat=" XSTR(__SUNPRO_CC_COMPAT)
221 #elif __SUNPRO_CC == 0x520
222 #define HOTSPOT_BUILD_COMPILER "Workshop 5.2 compat=" XSTR(__SUNPRO_CC_COMPAT)
223 #elif __SUNPRO_CC == 0x580
224 #define HOTSPOT_BUILD_COMPILER "Workshop 5.8"
225 #elif __SUNPRO_CC == 0x590
226 #define HOTSPOT_BUILD_COMPILER "Workshop 5.9"
227 #elif __SUNPRO_CC == 0x5100
228 #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u1"
229 #elif __SUNPRO_CC == 0x5120
230 #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u3"
231 #elif __SUNPRO_CC == 0x5130
232 #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u4"
233 #else
234 #define HOTSPOT_BUILD_COMPILER "unknown Workshop:" XSTR(__SUNPRO_CC)
235 #endif
236 #elif defined(__GNUC__)
237 #define HOTSPOT_BUILD_COMPILER "gcc " __VERSION__
238 #elif defined(__IBMCPP__)
239 #define HOTSPOT_BUILD_COMPILER "xlC " XSTR(__IBMCPP__)
240
241 #else
242 #define HOTSPOT_BUILD_COMPILER "unknown compiler"
243 #endif
244 #endif
245
246 #ifndef FLOAT_ARCH
247 #if defined(__SOFTFP__)
248 #define FLOAT_ARCH_STR "-sflt"
249 #else
250 #define FLOAT_ARCH_STR ""
251 #endif
252 #else
253 #define FLOAT_ARCH_STR XSTR(FLOAT_ARCH)
254 #endif
255
256 #define INTERNAL_VERSION_SUFFIX VM_RELEASE ")" \
257 " for " OS "-" CPU FLOAT_ARCH_STR \
258 " JRE (" VERSION_STRING "), built on " __DATE__ " " __TIME__ \
259 " by " XSTR(HOTSPOT_BUILD_USER) " with " HOTSPOT_BUILD_COMPILER
260
261 return strcmp(DEBUG_LEVEL, "release") == 0
262 ? VMNAME " (" INTERNAL_VERSION_SUFFIX
263 : VMNAME " (" DEBUG_LEVEL " " INTERNAL_VERSION_SUFFIX;
264 }
265
266 const char *Abstract_VM_Version::vm_build_user() {
267 return HOTSPOT_BUILD_USER;
268 }
269
270 const char *Abstract_VM_Version::jdk_debug_level() {
271 return DEBUG_LEVEL;
272 }
273
274 const char *Abstract_VM_Version::printable_jdk_debug_level() {
275 // Debug level is not printed for "release" builds
276 return strcmp(DEBUG_LEVEL, "release") == 0 ? "" : DEBUG_LEVEL " ";
277 }
278
279 unsigned int Abstract_VM_Version::jvm_version() {
280 return ((Abstract_VM_Version::vm_major_version() & 0xFF) << 24) |
281 ((Abstract_VM_Version::vm_minor_version() & 0xFF) << 16) |
282 ((Abstract_VM_Version::vm_security_version() & 0xFF) << 8) |
283 (Abstract_VM_Version::vm_build_number() & 0xFF);
284 }
285
286
287 void VM_Version_init() {
288 VM_Version::initialize();
289
290 if (log_is_enabled(Info, os, cpu)) {
291 char buf[1024];
292 ResourceMark rm;
293 outputStream* log = Log(os, cpu)::info_stream();
294 os::print_cpu_info(log, buf, sizeof(buf));
295 }
296 }
297
298 unsigned int Abstract_VM_Version::nof_parallel_worker_threads(
299 unsigned int num,
300 unsigned int den,
301 unsigned int switch_pt) {
302 if (FLAG_IS_DEFAULT(ParallelGCThreads)) {
303 assert(ParallelGCThreads == 0, "Default ParallelGCThreads is not 0");
304 unsigned int threads;
305 // For very large machines, there are diminishing returns
306 // for large numbers of worker threads. Instead of
307 // hogging the whole system, use a fraction of the workers for every
308 // processor after the first 8. For example, on a 72 cpu machine
309 // and a chosen fraction of 5/8
310 // use 8 + (72 - 8) * (5/8) == 48 worker threads.
311 unsigned int ncpus = (unsigned int) os::initial_active_processor_count();
312 threads = (ncpus <= switch_pt) ?
313 ncpus :
314 (switch_pt + ((ncpus - switch_pt) * num) / den);
315 #ifndef _LP64
316 // On 32-bit binaries the virtual address space available to the JVM
317 // is usually limited to 2-3 GB (depends on the platform).
318 // Do not use up address space with too many threads (stacks and per-thread
319 // data). Note that x86 apps running on Win64 have 2 stacks per thread.
320 // GC may more generally scale down threads by max heap size (etc), but the
321 // consequences of over-provisioning threads are higher on 32-bit JVMS,
322 // so add hard limit here:
323 threads = MIN2(threads, (2*switch_pt));
324 #endif
325 return threads;
326 } else {
327 return ParallelGCThreads;
328 }
329 }
330
331 unsigned int Abstract_VM_Version::calc_parallel_worker_threads() {
332 return nof_parallel_worker_threads(5, 8, 8);
333 }
334
335
336 // Does not set the _initialized flag since it is
337 // a global flag.
338 unsigned int Abstract_VM_Version::parallel_worker_threads() {
339 if (!_parallel_worker_threads_initialized) {
340 if (FLAG_IS_DEFAULT(ParallelGCThreads)) {
341 _parallel_worker_threads = VM_Version::calc_parallel_worker_threads();
342 } else {
343 _parallel_worker_threads = ParallelGCThreads;
344 }
345 _parallel_worker_threads_initialized = true;
346 }
347 return _parallel_worker_threads;
348 }