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Side by Side Diff: src/runtime-profiler.h

Issue 9227007: Version 3.8.6 (Closed) Base URL: http://v8.googlecode.com/svn/trunk/
Patch Set: Created 8 years, 11 months ago
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1 // Copyright 2010 the V8 project authors. All rights reserved. 1 // Copyright 2010 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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39 class Object; 39 class Object;
40 class Semaphore; 40 class Semaphore;
41 41
42 class RuntimeProfiler { 42 class RuntimeProfiler {
43 public: 43 public:
44 explicit RuntimeProfiler(Isolate* isolate); 44 explicit RuntimeProfiler(Isolate* isolate);
45 45
46 static void GlobalSetup(); 46 static void GlobalSetup();
47 47
48 static inline bool IsEnabled() { 48 static inline bool IsEnabled() {
49 ASSERT(has_been_globally_setup_); 49 ASSERT(has_been_globally_set_up_);
50 return enabled_; 50 return enabled_;
51 } 51 }
52 52
53 void OptimizeNow(); 53 void OptimizeNow();
54 54
55 void NotifyTick(); 55 void NotifyTick();
56 56
57 void Setup(); 57 void SetUp();
58 void Reset(); 58 void Reset();
59 void TearDown(); 59 void TearDown();
60 60
61 Object** SamplerWindowAddress(); 61 Object** SamplerWindowAddress();
62 int SamplerWindowSize(); 62 int SamplerWindowSize();
63 63
64 // Rate limiting support. 64 // Rate limiting support.
65 65
66 // VM thread interface. 66 // VM thread interface.
67 // 67 //
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119 int sampler_window_position_; 119 int sampler_window_position_;
120 int sampler_window_weight_[kSamplerWindowSize]; 120 int sampler_window_weight_[kSamplerWindowSize];
121 121
122 // Possible state values: 122 // Possible state values:
123 // -1 => the profiler thread is waiting on the semaphore 123 // -1 => the profiler thread is waiting on the semaphore
124 // 0 or positive => the number of isolates running JavaScript code. 124 // 0 or positive => the number of isolates running JavaScript code.
125 static Atomic32 state_; 125 static Atomic32 state_;
126 static Semaphore* semaphore_; 126 static Semaphore* semaphore_;
127 127
128 #ifdef DEBUG 128 #ifdef DEBUG
129 static bool has_been_globally_setup_; 129 static bool has_been_globally_set_up_;
130 #endif 130 #endif
131 static bool enabled_; 131 static bool enabled_;
132 }; 132 };
133 133
134 134
135 // Rate limiter intended to be used in the profiler thread. 135 // Rate limiter intended to be used in the profiler thread.
136 class RuntimeProfilerRateLimiter BASE_EMBEDDED { 136 class RuntimeProfilerRateLimiter BASE_EMBEDDED {
137 public: 137 public:
138 RuntimeProfilerRateLimiter() {} 138 RuntimeProfilerRateLimiter() {}
139 139
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166 166
167 void RuntimeProfiler::IsolateExitedJS(Isolate* isolate) { 167 void RuntimeProfiler::IsolateExitedJS(Isolate* isolate) {
168 Atomic32 new_state = NoBarrier_AtomicIncrement(&state_, -1); 168 Atomic32 new_state = NoBarrier_AtomicIncrement(&state_, -1);
169 ASSERT(new_state >= 0); 169 ASSERT(new_state >= 0);
170 USE(new_state); 170 USE(new_state);
171 } 171 }
172 172
173 } } // namespace v8::internal 173 } } // namespace v8::internal
174 174
175 #endif // V8_RUNTIME_PROFILER_H_ 175 #endif // V8_RUNTIME_PROFILER_H_
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