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Issue 9666052: Landing for pliard@chromium.org: Remove static initializers in v8. (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: Created 8 years, 9 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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1083 } 1083 }
1084 1084
1085 static void RestoreSignalHandler() { 1085 static void RestoreSignalHandler() {
1086 if (signal_handler_installed_) { 1086 if (signal_handler_installed_) {
1087 sigaction(SIGPROF, &old_signal_handler_, 0); 1087 sigaction(SIGPROF, &old_signal_handler_, 0);
1088 signal_handler_installed_ = false; 1088 signal_handler_installed_ = false;
1089 } 1089 }
1090 } 1090 }
1091 1091
1092 static void AddActiveSampler(Sampler* sampler) { 1092 static void AddActiveSampler(Sampler* sampler) {
1093 ScopedLock lock(mutex_); 1093 ScopedLock lock(mutex_.Pointer());
1094 SamplerRegistry::AddActiveSampler(sampler); 1094 SamplerRegistry::AddActiveSampler(sampler);
1095 if (instance_ == NULL) { 1095 if (instance_ == NULL) {
1096 // Start a thread that will send SIGPROF signal to VM threads, 1096 // Start a thread that will send SIGPROF signal to VM threads,
1097 // when CPU profiling will be enabled. 1097 // when CPU profiling will be enabled.
1098 instance_ = new SignalSender(sampler->interval()); 1098 instance_ = new SignalSender(sampler->interval());
1099 instance_->Start(); 1099 instance_->Start();
1100 } else { 1100 } else {
1101 ASSERT(instance_->interval_ == sampler->interval()); 1101 ASSERT(instance_->interval_ == sampler->interval());
1102 } 1102 }
1103 } 1103 }
1104 1104
1105 static void RemoveActiveSampler(Sampler* sampler) { 1105 static void RemoveActiveSampler(Sampler* sampler) {
1106 ScopedLock lock(mutex_); 1106 ScopedLock lock(mutex_.Pointer());
1107 SamplerRegistry::RemoveActiveSampler(sampler); 1107 SamplerRegistry::RemoveActiveSampler(sampler);
1108 if (SamplerRegistry::GetState() == SamplerRegistry::HAS_NO_SAMPLERS) { 1108 if (SamplerRegistry::GetState() == SamplerRegistry::HAS_NO_SAMPLERS) {
1109 RuntimeProfiler::StopRuntimeProfilerThreadBeforeShutdown(instance_); 1109 RuntimeProfiler::StopRuntimeProfilerThreadBeforeShutdown(instance_);
1110 delete instance_; 1110 delete instance_;
1111 instance_ = NULL; 1111 instance_ = NULL;
1112 RestoreSignalHandler(); 1112 RestoreSignalHandler();
1113 } 1113 }
1114 } 1114 }
1115 1115
1116 // Implement Thread::Run(). 1116 // Implement Thread::Run().
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1199 #endif // DEBUG 1199 #endif // DEBUG
1200 USE(result); 1200 USE(result);
1201 #endif // ANDROID 1201 #endif // ANDROID
1202 } 1202 }
1203 1203
1204 const int vm_tgid_; 1204 const int vm_tgid_;
1205 const int interval_; 1205 const int interval_;
1206 RuntimeProfilerRateLimiter rate_limiter_; 1206 RuntimeProfilerRateLimiter rate_limiter_;
1207 1207
1208 // Protects the process wide state below. 1208 // Protects the process wide state below.
1209 static Mutex* mutex_; 1209 static LazyMutex mutex_;
1210 static SignalSender* instance_; 1210 static SignalSender* instance_;
1211 static bool signal_handler_installed_; 1211 static bool signal_handler_installed_;
1212 static struct sigaction old_signal_handler_; 1212 static struct sigaction old_signal_handler_;
1213 1213
1214 private: 1214 private:
1215 DISALLOW_COPY_AND_ASSIGN(SignalSender); 1215 DISALLOW_COPY_AND_ASSIGN(SignalSender);
1216 }; 1216 };
1217 1217
1218 1218
1219 Mutex* SignalSender::mutex_ = OS::CreateMutex(); 1219 LazyMutex SignalSender::mutex_ = LAZY_MUTEX_INITIALIZER;
1220 SignalSender* SignalSender::instance_ = NULL; 1220 SignalSender* SignalSender::instance_ = NULL;
1221 struct sigaction SignalSender::old_signal_handler_; 1221 struct sigaction SignalSender::old_signal_handler_;
1222 bool SignalSender::signal_handler_installed_ = false; 1222 bool SignalSender::signal_handler_installed_ = false;
1223 1223
1224 1224
1225 Sampler::Sampler(Isolate* isolate, int interval) 1225 Sampler::Sampler(Isolate* isolate, int interval)
1226 : isolate_(isolate), 1226 : isolate_(isolate),
1227 interval_(interval), 1227 interval_(interval),
1228 profiling_(false), 1228 profiling_(false),
1229 active_(false), 1229 active_(false),
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1246 1246
1247 1247
1248 void Sampler::Stop() { 1248 void Sampler::Stop() {
1249 ASSERT(IsActive()); 1249 ASSERT(IsActive());
1250 SignalSender::RemoveActiveSampler(this); 1250 SignalSender::RemoveActiveSampler(this);
1251 SetActive(false); 1251 SetActive(false);
1252 } 1252 }
1253 1253
1254 1254
1255 } } // namespace v8::internal 1255 } } // namespace v8::internal
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