1 /*
2 * Copyright (c) 1998, 2011, 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 #ifdef TARGET_ARCH_x86
30 # include "vm_version_x86.hpp"
31 #endif
32 #ifdef TARGET_ARCH_sparc
33 # include "vm_version_sparc.hpp"
34 #endif
35 #ifdef TARGET_ARCH_zero
36 # include "vm_version_zero.hpp"
37 #endif
38 #ifdef TARGET_ARCH_arm
39 # include "vm_version_arm.hpp"
40 #endif
41 #ifdef TARGET_ARCH_ppc
42 # include "vm_version_ppc.hpp"
43 #endif
44
45 const char* Abstract_VM_Version::_s_vm_release = Abstract_VM_Version::vm_release();
46 const char* Abstract_VM_Version::_s_internal_vm_info_string = Abstract_VM_Version::internal_vm_info_string();
47 bool Abstract_VM_Version::_supports_cx8 = false;
48 unsigned int Abstract_VM_Version::_logical_processors_per_package = 1U;
49 int Abstract_VM_Version::_reserve_for_allocation_prefetch = 0;
50
51 #ifndef HOTSPOT_RELEASE_VERSION
52 #error HOTSPOT_RELEASE_VERSION must be defined
53 #endif
54 #ifndef JRE_RELEASE_VERSION
55 #error JRE_RELEASE_VERSION must be defined
56 #endif
57 #ifndef HOTSPOT_BUILD_TARGET
58 #error HOTSPOT_BUILD_TARGET must be defined
59 #endif
60
61 #ifdef PRODUCT
62 #define VM_RELEASE HOTSPOT_RELEASE_VERSION
63 #else
64 #define VM_RELEASE HOTSPOT_RELEASE_VERSION "-" HOTSPOT_BUILD_TARGET
65 #endif
66
67 // HOTSPOT_RELEASE_VERSION must follow the release version naming convention
68 // <major_ver>.<minor_ver>-b<nn>[-<identifier>][-<debug_target>]
69 int Abstract_VM_Version::_vm_major_version = 0;
70 int Abstract_VM_Version::_vm_minor_version = 0;
71 int Abstract_VM_Version::_vm_build_number = 0;
72 bool Abstract_VM_Version::_initialized = false;
73 int Abstract_VM_Version::_parallel_worker_threads = 0;
74 bool Abstract_VM_Version::_parallel_worker_threads_initialized = false;
75
76 void Abstract_VM_Version::initialize() {
77 if (_initialized) {
78 return;
79 }
80 char* vm_version = os::strdup(HOTSPOT_RELEASE_VERSION);
81
82 // Expecting the next vm_version format:
83 // <major_ver>.<minor_ver>-b<nn>[-<identifier>]
84 char* vm_major_ver = vm_version;
85 assert(isdigit(vm_major_ver[0]),"wrong vm major version number");
86 char* vm_minor_ver = strchr(vm_major_ver, '.');
87 assert(vm_minor_ver != NULL && isdigit(vm_minor_ver[1]),"wrong vm minor version number");
88 vm_minor_ver[0] = '\0'; // terminate vm_major_ver
89 vm_minor_ver += 1;
90 char* vm_build_num = strchr(vm_minor_ver, '-');
91 assert(vm_build_num != NULL && vm_build_num[1] == 'b' && isdigit(vm_build_num[2]),"wrong vm build number");
92 vm_build_num[0] = '\0'; // terminate vm_minor_ver
93 vm_build_num += 2;
94
95 _vm_major_version = atoi(vm_major_ver);
96 _vm_minor_version = atoi(vm_minor_ver);
97 _vm_build_number = atoi(vm_build_num);
98
99 os::free(vm_version);
100 _initialized = true;
101 }
102
103 #if defined(_LP64)
104 #define VMLP "64-Bit "
105 #else
106 #define VMLP ""
107 #endif
108
109 #ifdef KERNEL
110 #define VMTYPE "Kernel"
111 #else // KERNEL
112 #ifdef TIERED
113 #define VMTYPE "Server"
114 #else // TIERED
115 #ifdef ZERO
116 #ifdef SHARK
117 #define VMTYPE "Shark"
118 #else // SHARK
119 #define VMTYPE "Zero"
120 #endif // SHARK
121 #else // ZERO
122 #define VMTYPE COMPILER1_PRESENT("Client") \
123 COMPILER2_PRESENT("Server")
124 #endif // ZERO
125 #endif // TIERED
126 #endif // KERNEL
127
128 #ifndef HOTSPOT_VM_DISTRO
129 #error HOTSPOT_VM_DISTRO must be defined
130 #endif
131 #define VMNAME HOTSPOT_VM_DISTRO " " VMLP VMTYPE " VM"
132
133 const char* Abstract_VM_Version::vm_name() {
134 return VMNAME;
135 }
136
137
138 const char* Abstract_VM_Version::vm_vendor() {
139 #ifdef VENDOR
140 return XSTR(VENDOR);
141 #else
142 return JDK_Version::is_gte_jdk17x_version() ?
143 "Oracle Corporation" : "Sun Microsystems Inc.";
144 #endif
145 }
146
147
148 const char* Abstract_VM_Version::vm_info_string() {
149 switch (Arguments::mode()) {
150 case Arguments::_int:
151 return UseSharedSpaces ? "interpreted mode, sharing" : "interpreted mode";
152 case Arguments::_mixed:
153 return UseSharedSpaces ? "mixed mode, sharing" : "mixed mode";
154 case Arguments::_comp:
155 return UseSharedSpaces ? "compiled mode, sharing" : "compiled mode";
156 };
157 ShouldNotReachHere();
158 return "";
159 }
160
161 // NOTE: do *not* use stringStream. this function is called by
162 // fatal error handler. if the crash is in native thread,
163 // stringStream cannot get resource allocated and will SEGV.
164 const char* Abstract_VM_Version::vm_release() {
165 return VM_RELEASE;
166 }
167
168 #define OS LINUX_ONLY("linux") \
169 WINDOWS_ONLY("windows") \
170 SOLARIS_ONLY("solaris") \
171 BSD_ONLY("bsd")
172
173 #ifdef ZERO
174 #define CPU ZERO_LIBARCH
175 #else
176 #define CPU IA32_ONLY("x86") \
177 IA64_ONLY("ia64") \
178 AMD64_ONLY("amd64") \
179 ARM_ONLY("arm") \
180 PPC_ONLY("ppc") \
181 SPARC_ONLY("sparc")
182 #endif // ZERO
183
184 const char *Abstract_VM_Version::vm_platform_string() {
185 return OS "-" CPU;
186 }
187
188 const char* Abstract_VM_Version::internal_vm_info_string() {
189 #ifndef HOTSPOT_BUILD_USER
190 #define HOTSPOT_BUILD_USER unknown
191 #endif
192
193 #ifndef HOTSPOT_BUILD_COMPILER
194 #ifdef _MSC_VER
195 #if _MSC_VER == 1100
196 #define HOTSPOT_BUILD_COMPILER "MS VC++ 5.0"
197 #elif _MSC_VER == 1200
198 #define HOTSPOT_BUILD_COMPILER "MS VC++ 6.0"
199 #elif _MSC_VER == 1310
200 #define HOTSPOT_BUILD_COMPILER "MS VC++ 7.1 (VS2003)"
201 #elif _MSC_VER == 1400
202 #define HOTSPOT_BUILD_COMPILER "MS VC++ 8.0 (VS2005)"
203 #elif _MSC_VER == 1500
204 #define HOTSPOT_BUILD_COMPILER "MS VC++ 9.0 (VS2008)"
205 #else
206 #define HOTSPOT_BUILD_COMPILER "unknown MS VC++:" XSTR(_MSC_VER)
207 #endif
208 #elif defined(__SUNPRO_CC)
209 #if __SUNPRO_CC == 0x420
210 #define HOTSPOT_BUILD_COMPILER "Workshop 4.2"
211 #elif __SUNPRO_CC == 0x500
212 #define HOTSPOT_BUILD_COMPILER "Workshop 5.0 compat=" XSTR(__SUNPRO_CC_COMPAT)
213 #elif __SUNPRO_CC == 0x520
214 #define HOTSPOT_BUILD_COMPILER "Workshop 5.2 compat=" XSTR(__SUNPRO_CC_COMPAT)
215 #elif __SUNPRO_CC == 0x580
216 #define HOTSPOT_BUILD_COMPILER "Workshop 5.8"
217 #elif __SUNPRO_CC == 0x590
218 #define HOTSPOT_BUILD_COMPILER "Workshop 5.9"
219 #elif __SUNPRO_CC == 0x5100
220 #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u1"
221 #else
222 #define HOTSPOT_BUILD_COMPILER "unknown Workshop:" XSTR(__SUNPRO_CC)
223 #endif
224 #elif defined(__GNUC__)
225 #define HOTSPOT_BUILD_COMPILER "gcc " __VERSION__
226 #else
227 #define HOTSPOT_BUILD_COMPILER "unknown compiler"
228 #endif
229 #endif
230
231 #ifndef FLOAT_ARCH
232 #if defined(__SOFTFP__)
233 #define FLOAT_ARCH "-sflt"
234 #elif defined(E500V2)
235 #define FLOAT_ARCH "-e500v2"
236 #elif defined(ARM)
237 #define FLOAT_ARCH "-vfp"
238 #elif defined(PPC)
239 #define FLOAT_ARCH "-hflt"
240 #else
241 #define FLOAT_ARCH ""
242 #endif
243 #endif
244
245 return VMNAME " (" VM_RELEASE ") for " OS "-" CPU FLOAT_ARCH
246 " JRE (" JRE_RELEASE_VERSION "), built on " __DATE__ " " __TIME__
247 " by " XSTR(HOTSPOT_BUILD_USER) " with " HOTSPOT_BUILD_COMPILER;
248 }
249
250 const char *Abstract_VM_Version::vm_build_user() {
251 return HOTSPOT_BUILD_USER;
252 }
253
254 unsigned int Abstract_VM_Version::jvm_version() {
255 return ((Abstract_VM_Version::vm_major_version() & 0xFF) << 24) |
256 ((Abstract_VM_Version::vm_minor_version() & 0xFF) << 16) |
257 (Abstract_VM_Version::vm_build_number() & 0xFF);
258 }
259
260
261 void VM_Version_init() {
262 VM_Version::initialize();
263
264 #ifndef PRODUCT
265 if (PrintMiscellaneous && Verbose) {
266 os::print_cpu_info(tty);
267 }
268 #endif
269 }
270
271 unsigned int Abstract_VM_Version::nof_parallel_worker_threads(
272 unsigned int num,
273 unsigned int den,
274 unsigned int switch_pt) {
275 if (FLAG_IS_DEFAULT(ParallelGCThreads)) {
276 assert(ParallelGCThreads == 0, "Default ParallelGCThreads is not 0");
277 // For very large machines, there are diminishing returns
278 // for large numbers of worker threads. Instead of
279 // hogging the whole system, use a fraction of the workers for every
280 // processor after the first 8. For example, on a 72 cpu machine
281 // and a chosen fraction of 5/8
282 // use 8 + (72 - 8) * (5/8) == 48 worker threads.
283 unsigned int ncpus = (unsigned int) os::active_processor_count();
284 return (ncpus <= switch_pt) ?
285 ncpus :
286 (switch_pt + ((ncpus - switch_pt) * num) / den);
287 } else {
288 return ParallelGCThreads;
289 }
290 }
291
292 unsigned int Abstract_VM_Version::calc_parallel_worker_threads() {
293 return nof_parallel_worker_threads(5, 8, 8);
294 }
295
296
297 // Does not set the _initialized flag since it is
298 // a global flag.
299 unsigned int Abstract_VM_Version::parallel_worker_threads() {
300 if (!_parallel_worker_threads_initialized) {
301 if (FLAG_IS_DEFAULT(ParallelGCThreads)) {
302 _parallel_worker_threads = VM_Version::calc_parallel_worker_threads();
303 } else {
304 _parallel_worker_threads = ParallelGCThreads;
305 }
306 _parallel_worker_threads_initialized = true;
307 }
308 return _parallel_worker_threads;
309 }