Mercurial > hg > truffle
annotate src/share/vm/runtime/vm_version.cpp @ 616:4f360ec815ba
6720309: G1: don't synchronously update RSet during evacuation pauses
6720334: G1: don't update RSets of collection set regions during an evacuation pause
Summary: Introduced a deferred update mechanism for delaying the rset updates during the collection pause
Reviewed-by: apetrusenko, tonyp
author | iveresov |
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date | Fri, 06 Mar 2009 13:50:14 -0800 |
parents | d1605aabd0a1 |
children | c3a720eefe82 |
rev | line source |
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0 | 1 /* |
196 | 2 * Copyright 1998-2008 Sun Microsystems, Inc. All Rights Reserved. |
0 | 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_vm_version.cpp.incl" | |
27 | |
28 const char* Abstract_VM_Version::_s_vm_release = Abstract_VM_Version::vm_release(); | |
29 const char* Abstract_VM_Version::_s_internal_vm_info_string = Abstract_VM_Version::internal_vm_info_string(); | |
30 bool Abstract_VM_Version::_supports_cx8 = false; | |
31 unsigned int Abstract_VM_Version::_logical_processors_per_package = 1U; | |
32 | |
33 #ifndef HOTSPOT_RELEASE_VERSION | |
34 #error HOTSPOT_RELEASE_VERSION must be defined | |
35 #endif | |
36 #ifndef JRE_RELEASE_VERSION | |
37 #error JRE_RELEASE_VERSION must be defined | |
38 #endif | |
39 #ifndef HOTSPOT_BUILD_TARGET | |
40 #error HOTSPOT_BUILD_TARGET must be defined | |
41 #endif | |
42 | |
43 #ifdef PRODUCT | |
44 #define VM_RELEASE HOTSPOT_RELEASE_VERSION | |
45 #else | |
46 #define VM_RELEASE HOTSPOT_RELEASE_VERSION "-" HOTSPOT_BUILD_TARGET | |
47 #endif | |
48 | |
49 // HOTSPOT_RELEASE_VERSION must follow the release version naming convention | |
50 // <major_ver>.<minor_ver>-b<nn>[-<identifier>][-<debug_target>] | |
51 int Abstract_VM_Version::_vm_major_version = 0; | |
52 int Abstract_VM_Version::_vm_minor_version = 0; | |
53 int Abstract_VM_Version::_vm_build_number = 0; | |
54 bool Abstract_VM_Version::_initialized = false; | |
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55 int Abstract_VM_Version::_parallel_worker_threads = 0; |
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56 bool Abstract_VM_Version::_parallel_worker_threads_initialized = false; |
0 | 57 |
58 void Abstract_VM_Version::initialize() { | |
59 if (_initialized) { | |
60 return; | |
61 } | |
62 char* vm_version = os::strdup(HOTSPOT_RELEASE_VERSION); | |
63 | |
64 // Expecting the next vm_version format: | |
65 // <major_ver>.<minor_ver>-b<nn>[-<identifier>] | |
66 char* vm_major_ver = vm_version; | |
67 assert(isdigit(vm_major_ver[0]),"wrong vm major version number"); | |
68 char* vm_minor_ver = strchr(vm_major_ver, '.'); | |
69 assert(vm_minor_ver != NULL && isdigit(vm_minor_ver[1]),"wrong vm minor version number"); | |
70 vm_minor_ver[0] = '\0'; // terminate vm_major_ver | |
71 vm_minor_ver += 1; | |
72 char* vm_build_num = strchr(vm_minor_ver, '-'); | |
73 assert(vm_build_num != NULL && vm_build_num[1] == 'b' && isdigit(vm_build_num[2]),"wrong vm build number"); | |
74 vm_build_num[0] = '\0'; // terminate vm_minor_ver | |
75 vm_build_num += 2; | |
76 | |
77 _vm_major_version = atoi(vm_major_ver); | |
78 _vm_minor_version = atoi(vm_minor_ver); | |
79 _vm_build_number = atoi(vm_build_num); | |
80 | |
81 os::free(vm_version); | |
82 _initialized = true; | |
83 } | |
84 | |
85 #if defined(_LP64) | |
86 #define VMLP "64-Bit " | |
87 #else | |
88 #define VMLP "" | |
89 #endif | |
90 | |
91 #ifdef KERNEL | |
92 #define VMTYPE "Kernel" | |
93 #else // KERNEL | |
94 #ifdef TIERED | |
95 #define VMTYPE "Server" | |
96 #else | |
97 #define VMTYPE COMPILER1_PRESENT("Client") \ | |
98 COMPILER2_PRESENT("Server") | |
99 #endif // TIERED | |
100 #endif // KERNEL | |
101 | |
102 #ifndef HOTSPOT_VM_DISTRO | |
103 #error HOTSPOT_VM_DISTRO must be defined | |
104 #endif | |
105 #define VMNAME HOTSPOT_VM_DISTRO " " VMLP VMTYPE " VM" | |
106 | |
107 const char* Abstract_VM_Version::vm_name() { | |
108 return VMNAME; | |
109 } | |
110 | |
111 | |
112 const char* Abstract_VM_Version::vm_vendor() { | |
113 #ifdef VENDOR | |
114 return XSTR(VENDOR); | |
115 #else | |
116 return "Sun Microsystems Inc."; | |
117 #endif | |
118 } | |
119 | |
120 | |
121 const char* Abstract_VM_Version::vm_info_string() { | |
122 switch (Arguments::mode()) { | |
123 case Arguments::_int: | |
124 return UseSharedSpaces ? "interpreted mode, sharing" : "interpreted mode"; | |
125 case Arguments::_mixed: | |
126 return UseSharedSpaces ? "mixed mode, sharing" : "mixed mode"; | |
127 case Arguments::_comp: | |
128 return UseSharedSpaces ? "compiled mode, sharing" : "compiled mode"; | |
129 }; | |
130 ShouldNotReachHere(); | |
131 return ""; | |
132 } | |
133 | |
134 // NOTE: do *not* use stringStream. this function is called by | |
135 // fatal error handler. if the crash is in native thread, | |
136 // stringStream cannot get resource allocated and will SEGV. | |
137 const char* Abstract_VM_Version::vm_release() { | |
138 return VM_RELEASE; | |
139 } | |
140 | |
141 #define OS LINUX_ONLY("linux") \ | |
142 WINDOWS_ONLY("windows") \ | |
143 SOLARIS_ONLY("solaris") | |
144 | |
145 #define CPU IA32_ONLY("x86") \ | |
146 IA64_ONLY("ia64") \ | |
147 AMD64_ONLY("amd64") \ | |
148 SPARC_ONLY("sparc") | |
149 | |
150 const char *Abstract_VM_Version::vm_platform_string() { | |
151 return OS "-" CPU; | |
152 } | |
153 | |
154 const char* Abstract_VM_Version::internal_vm_info_string() { | |
155 #ifndef HOTSPOT_BUILD_USER | |
156 #define HOTSPOT_BUILD_USER unknown | |
157 #endif | |
158 | |
159 #ifndef HOTSPOT_BUILD_COMPILER | |
160 #ifdef _MSC_VER | |
161 #if _MSC_VER == 1100 | |
162 #define HOTSPOT_BUILD_COMPILER "MS VC++ 5.0" | |
163 #elif _MSC_VER == 1200 | |
164 #define HOTSPOT_BUILD_COMPILER "MS VC++ 6.0" | |
165 #elif _MSC_VER == 1310 | |
166 #define HOTSPOT_BUILD_COMPILER "MS VC++ 7.1" | |
167 #elif _MSC_VER == 1400 | |
168 #define HOTSPOT_BUILD_COMPILER "MS VC++ 8.0" | |
169 #else | |
170 #define HOTSPOT_BUILD_COMPILER "unknown MS VC++:" XSTR(_MSC_VER) | |
171 #endif | |
172 #elif defined(__SUNPRO_CC) | |
173 #if __SUNPRO_CC == 0x420 | |
174 #define HOTSPOT_BUILD_COMPILER "Workshop 4.2" | |
175 #elif __SUNPRO_CC == 0x500 | |
176 #define HOTSPOT_BUILD_COMPILER "Workshop 5.0 compat=" XSTR(__SUNPRO_CC_COMPAT) | |
177 #elif __SUNPRO_CC == 0x520 | |
178 #define HOTSPOT_BUILD_COMPILER "Workshop 5.2 compat=" XSTR(__SUNPRO_CC_COMPAT) | |
179 #elif __SUNPRO_CC == 0x580 | |
180 #define HOTSPOT_BUILD_COMPILER "Workshop 5.8" | |
181 #elif __SUNPRO_CC == 0x590 | |
182 #define HOTSPOT_BUILD_COMPILER "Workshop 5.9" | |
183 #else | |
184 #define HOTSPOT_BUILD_COMPILER "unknown Workshop:" XSTR(__SUNPRO_CC) | |
185 #endif | |
186 #elif defined(__GNUC__) | |
187 #define HOTSPOT_BUILD_COMPILER "gcc " __VERSION__ | |
188 #else | |
189 #define HOTSPOT_BUILD_COMPILER "unknown compiler" | |
190 #endif | |
191 #endif | |
192 | |
193 | |
194 return VMNAME " (" VM_RELEASE ") for " OS "-" CPU | |
195 " JRE (" JRE_RELEASE_VERSION "), built on " __DATE__ " " __TIME__ | |
196 " by " XSTR(HOTSPOT_BUILD_USER) " with " HOTSPOT_BUILD_COMPILER; | |
197 } | |
198 | |
199 unsigned int Abstract_VM_Version::jvm_version() { | |
200 return ((Abstract_VM_Version::vm_major_version() & 0xFF) << 24) | | |
201 ((Abstract_VM_Version::vm_minor_version() & 0xFF) << 16) | | |
202 (Abstract_VM_Version::vm_build_number() & 0xFF); | |
203 } | |
204 | |
205 | |
206 void VM_Version_init() { | |
207 VM_Version::initialize(); | |
208 | |
209 #ifndef PRODUCT | |
210 if (PrintMiscellaneous && Verbose) { | |
211 os::print_cpu_info(tty); | |
212 } | |
213 #endif | |
214 } | |
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215 |
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216 unsigned int Abstract_VM_Version::nof_parallel_worker_threads( |
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217 unsigned int num, |
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218 unsigned int den, |
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219 unsigned int switch_pt) { |
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220 if (FLAG_IS_DEFAULT(ParallelGCThreads)) { |
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221 assert(ParallelGCThreads == 0, "Default ParallelGCThreads is not 0"); |
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222 // For very large machines, there are diminishing returns |
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223 // for large numbers of worker threads. Instead of |
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224 // hogging the whole system, use a fraction of the workers for every |
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225 // processor after the first 8. For example, on a 72 cpu machine |
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226 // and a chosen fraction of 5/8 |
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227 // use 8 + (72 - 8) * (5/8) == 48 worker threads. |
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228 unsigned int ncpus = (unsigned int) os::active_processor_count(); |
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229 return (ncpus <= switch_pt) ? |
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230 ncpus : |
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231 (switch_pt + ((ncpus - switch_pt) * num) / den); |
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232 } else { |
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233 return ParallelGCThreads; |
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234 } |
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235 } |
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236 |
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237 unsigned int Abstract_VM_Version::calc_parallel_worker_threads() { |
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238 return nof_parallel_worker_threads(5, 8, 8); |
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239 } |
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240 |
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241 |
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242 // Does not set the _initialized flag since it is |
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243 // a global flag. |
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244 unsigned int Abstract_VM_Version::parallel_worker_threads() { |
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245 if (!_parallel_worker_threads_initialized) { |
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246 if (FLAG_IS_DEFAULT(ParallelGCThreads)) { |
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247 _parallel_worker_threads = VM_Version::calc_parallel_worker_threads(); |
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248 } else { |
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249 _parallel_worker_threads = ParallelGCThreads; |
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250 } |
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251 _parallel_worker_threads_initialized = true; |
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252 } |
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253 return _parallel_worker_threads; |
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254 } |