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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "platform/globals.h" | 5 #include "platform/globals.h" |
6 #if defined(TARGET_OS_ANDROID) | 6 #if defined(TARGET_OS_ANDROID) |
7 | 7 |
8 #include "vm/isolate.h" | 8 #include "vm/isolate.h" |
9 #include "vm/json_stream.h" | 9 #include "vm/json_stream.h" |
10 #include "vm/profiler.h" | 10 #include "vm/profiler.h" |
11 #include "vm/signal_handler.h" | 11 #include "vm/signal_handler.h" |
12 | 12 |
13 namespace dart { | 13 namespace dart { |
14 | 14 |
15 DECLARE_FLAG(bool, profile); | 15 DECLARE_FLAG(bool, profile); |
16 | 16 DECLARE_FLAG(bool, trace_profiled_isolates); |
17 | 17 |
18 static void ProfileSignalAction(int signal, siginfo_t* info, void* context_) { | 18 static void ProfileSignalAction(int signal, siginfo_t* info, void* context_) { |
19 if (signal != SIGPROF) { | 19 if (signal != SIGPROF) { |
20 return; | 20 return; |
21 } | 21 } |
22 Isolate* isolate = Isolate::Current(); | 22 Isolate* isolate = Isolate::Current(); |
23 if (isolate == NULL) { | 23 if (isolate == NULL) { |
24 return; | 24 return; |
25 } | 25 } |
26 // Thread owns no profiler locks at this point. | 26 // Thread owns no profiler locks at this point. |
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90 ASSERT(lowest != max_time); | 90 ASSERT(lowest != max_time); |
91 ASSERT(lowest > 0); | 91 ASSERT(lowest > 0); |
92 return lowest; | 92 return lowest; |
93 } | 93 } |
94 | 94 |
95 | 95 |
96 void ProfilerManager::ThreadMain(uword parameters) { | 96 void ProfilerManager::ThreadMain(uword parameters) { |
97 ASSERT(initialized_); | 97 ASSERT(initialized_); |
98 ASSERT(FLAG_profile); | 98 ASSERT(FLAG_profile); |
99 SignalHandler::Install(ProfileSignalAction); | 99 SignalHandler::Install(ProfileSignalAction); |
| 100 if (FLAG_trace_profiled_isolates) { |
| 101 OS::Print("ProfilerManager Android ready.\n"); |
| 102 } |
| 103 thread_running_ = true; |
| 104 { |
| 105 // Signal to main thread we are ready. |
| 106 ScopedMonitor startup_lock(start_stop_monitor_); |
| 107 startup_lock.Notify(); |
| 108 } |
100 ScopedMonitor lock(monitor_); | 109 ScopedMonitor lock(monitor_); |
101 while (!shutdown_) { | 110 while (!shutdown_) { |
102 int64_t current_time = OS::GetCurrentTimeMicros(); | 111 int64_t current_time = OS::GetCurrentTimeMicros(); |
103 int64_t next_sample = SampleAndRescheduleIsolates(current_time); | 112 int64_t next_sample = SampleAndRescheduleIsolates(current_time); |
104 lock.WaitMicros(next_sample); | 113 lock.WaitMicros(next_sample); |
105 } | 114 } |
| 115 if (FLAG_trace_profiled_isolates) { |
| 116 OS::Print("ProfilerManager Android exiting.\n"); |
| 117 } |
| 118 thread_running_ = false; |
| 119 { |
| 120 // Signal to main thread we are exiting. |
| 121 ScopedMonitor shutdown_lock(start_stop_monitor_); |
| 122 shutdown_lock.Notify(); |
| 123 } |
106 } | 124 } |
107 | 125 |
108 | 126 |
109 } // namespace dart | 127 } // namespace dart |
110 | 128 |
111 #endif // defined(TARGET_OS_ANDROID) | 129 #endif // defined(TARGET_OS_ANDROID) |
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