Mercurial > jdk8-mips64-public > hotspot / file revision
src/share/vm/runtime/vm_version.cpp@1af104d6cf99
src/share/vm/runtime/vm_version.cpp
Tue, 16 Aug 2011 16:59:46 -0700
- author
- kvn
- date
- Tue, 16 Aug 2011 16:59:46 -0700
- changeset 3052
- 1af104d6cf99
- parent 2708
- 1d1603768966
- child 3156
- f08d439fab8c
- permissions
- -rw-r--r--
7079329: Adjust allocation prefetching for T4
Summary: on T4 2 BIS instructions should be issued to prefetch 64 bytes
Reviewed-by: iveresov, phh, twisti
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 */
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
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;
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
61 #ifdef PRODUCT
62 #define VM_RELEASE HOTSPOT_RELEASE_VERSION
63 #else
64 #define VM_RELEASE HOTSPOT_RELEASE_VERSION "-" HOTSPOT_BUILD_TARGET
65 #endif
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;
76 void Abstract_VM_Version::initialize() {
77 if (_initialized) {
78 return;
79 }
80 char* vm_version = os::strdup(HOTSPOT_RELEASE_VERSION);
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;
95 _vm_major_version = atoi(vm_major_ver);
96 _vm_minor_version = atoi(vm_minor_ver);
97 _vm_build_number = atoi(vm_build_num);
99 os::free(vm_version);
100 _initialized = true;
101 }
103 #if defined(_LP64)
104 #define VMLP "64-Bit "
105 #else
106 #define VMLP ""
107 #endif
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
128 #ifndef HOTSPOT_VM_DISTRO
129 #error HOTSPOT_VM_DISTRO must be defined
130 #endif
131 #define VMNAME HOTSPOT_VM_DISTRO " " VMLP VMTYPE " VM"
133 const char* Abstract_VM_Version::vm_name() {
134 return VMNAME;
135 }
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 }
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 }
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 }
168 #define OS LINUX_ONLY("linux") \
169 WINDOWS_ONLY("windows") \
170 SOLARIS_ONLY("solaris")
172 #ifdef ZERO
173 #define CPU ZERO_LIBARCH
174 #else
175 #define CPU IA32_ONLY("x86") \
176 IA64_ONLY("ia64") \
177 AMD64_ONLY("amd64") \
178 ARM_ONLY("arm") \
179 PPC_ONLY("ppc") \
180 SPARC_ONLY("sparc")
181 #endif // ZERO
183 const char *Abstract_VM_Version::vm_platform_string() {
184 return OS "-" CPU;
185 }
187 const char* Abstract_VM_Version::internal_vm_info_string() {
188 #ifndef HOTSPOT_BUILD_USER
189 #define HOTSPOT_BUILD_USER unknown
190 #endif
192 #ifndef HOTSPOT_BUILD_COMPILER
193 #ifdef _MSC_VER
194 #if _MSC_VER == 1100
195 #define HOTSPOT_BUILD_COMPILER "MS VC++ 5.0"
196 #elif _MSC_VER == 1200
197 #define HOTSPOT_BUILD_COMPILER "MS VC++ 6.0"
198 #elif _MSC_VER == 1310
199 #define HOTSPOT_BUILD_COMPILER "MS VC++ 7.1 (VS2003)"
200 #elif _MSC_VER == 1400
201 #define HOTSPOT_BUILD_COMPILER "MS VC++ 8.0 (VS2005)"
202 #elif _MSC_VER == 1500
203 #define HOTSPOT_BUILD_COMPILER "MS VC++ 9.0 (VS2008)"
204 #else
205 #define HOTSPOT_BUILD_COMPILER "unknown MS VC++:" XSTR(_MSC_VER)
206 #endif
207 #elif defined(__SUNPRO_CC)
208 #if __SUNPRO_CC == 0x420
209 #define HOTSPOT_BUILD_COMPILER "Workshop 4.2"
210 #elif __SUNPRO_CC == 0x500
211 #define HOTSPOT_BUILD_COMPILER "Workshop 5.0 compat=" XSTR(__SUNPRO_CC_COMPAT)
212 #elif __SUNPRO_CC == 0x520
213 #define HOTSPOT_BUILD_COMPILER "Workshop 5.2 compat=" XSTR(__SUNPRO_CC_COMPAT)
214 #elif __SUNPRO_CC == 0x580
215 #define HOTSPOT_BUILD_COMPILER "Workshop 5.8"
216 #elif __SUNPRO_CC == 0x590
217 #define HOTSPOT_BUILD_COMPILER "Workshop 5.9"
218 #elif __SUNPRO_CC == 0x5100
219 #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u1"
220 #else
221 #define HOTSPOT_BUILD_COMPILER "unknown Workshop:" XSTR(__SUNPRO_CC)
222 #endif
223 #elif defined(__GNUC__)
224 #define HOTSPOT_BUILD_COMPILER "gcc " __VERSION__
225 #else
226 #define HOTSPOT_BUILD_COMPILER "unknown compiler"
227 #endif
228 #endif
230 #ifndef FLOAT_ARCH
231 #if defined(__SOFTFP__)
232 #define FLOAT_ARCH "-sflt"
233 #elif defined(E500V2)
234 #define FLOAT_ARCH "-e500v2"
235 #elif defined(ARM)
236 #define FLOAT_ARCH "-vfp"
237 #elif defined(PPC)
238 #define FLOAT_ARCH "-hflt"
239 #else
240 #define FLOAT_ARCH ""
241 #endif
242 #endif
244 return VMNAME " (" VM_RELEASE ") for " OS "-" CPU FLOAT_ARCH
245 " JRE (" JRE_RELEASE_VERSION "), built on " __DATE__ " " __TIME__
246 " by " XSTR(HOTSPOT_BUILD_USER) " with " HOTSPOT_BUILD_COMPILER;
247 }
249 const char *Abstract_VM_Version::vm_build_user() {
250 return HOTSPOT_BUILD_USER;
251 }
253 unsigned int Abstract_VM_Version::jvm_version() {
254 return ((Abstract_VM_Version::vm_major_version() & 0xFF) << 24) |
255 ((Abstract_VM_Version::vm_minor_version() & 0xFF) << 16) |
256 (Abstract_VM_Version::vm_build_number() & 0xFF);
257 }
260 void VM_Version_init() {
261 VM_Version::initialize();
263 #ifndef PRODUCT
264 if (PrintMiscellaneous && Verbose) {
265 os::print_cpu_info(tty);
266 }
267 #endif
268 }
270 unsigned int Abstract_VM_Version::nof_parallel_worker_threads(
271 unsigned int num,
272 unsigned int den,
273 unsigned int switch_pt) {
274 if (FLAG_IS_DEFAULT(ParallelGCThreads)) {
275 assert(ParallelGCThreads == 0, "Default ParallelGCThreads is not 0");
276 // For very large machines, there are diminishing returns
277 // for large numbers of worker threads. Instead of
278 // hogging the whole system, use a fraction of the workers for every
279 // processor after the first 8. For example, on a 72 cpu machine
280 // and a chosen fraction of 5/8
281 // use 8 + (72 - 8) * (5/8) == 48 worker threads.
282 unsigned int ncpus = (unsigned int) os::active_processor_count();
283 return (ncpus <= switch_pt) ?
284 ncpus :
285 (switch_pt + ((ncpus - switch_pt) * num) / den);
286 } else {
287 return ParallelGCThreads;
288 }
289 }
291 unsigned int Abstract_VM_Version::calc_parallel_worker_threads() {
292 return nof_parallel_worker_threads(5, 8, 8);
293 }
296 // Does not set the _initialized flag since it is
297 // a global flag.
298 unsigned int Abstract_VM_Version::parallel_worker_threads() {
299 if (!_parallel_worker_threads_initialized) {
300 if (FLAG_IS_DEFAULT(ParallelGCThreads)) {
301 _parallel_worker_threads = VM_Version::calc_parallel_worker_threads();
302 } else {
303 _parallel_worker_threads = ParallelGCThreads;
304 }
305 _parallel_worker_threads_initialized = true;
306 }
307 return _parallel_worker_threads;
308 }
