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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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| 107 Isolate* isolate_; | 107 Isolate* isolate_; |
| 108 | 108 |
| 109 int sampler_threshold_; | 109 int sampler_threshold_; |
| 110 int sampler_threshold_size_factor_; | 110 int sampler_threshold_size_factor_; |
| 111 | 111 |
| 112 // The JSFunctions in the sampler window are not GC safe. Old-space | 112 // The JSFunctions in the sampler window are not GC safe. Old-space |
| 113 // pointers are not cleared during mark-sweep collection and therefore | 113 // pointers are not cleared during mark-sweep collection and therefore |
| 114 // the window might contain stale pointers. The window is updated on | 114 // the window might contain stale pointers. The window is updated on |
| 115 // scavenges and (parts of it) cleared on mark-sweep and | 115 // scavenges and (parts of it) cleared on mark-sweep and |
| 116 // mark-sweep-compact. | 116 // mark-sweep-compact. |
| 117 JSFunction* sampler_window_[kSamplerWindowSize]; | 117 Object* sampler_window_[kSamplerWindowSize]; |
| 118 int sampler_window_position_; | 118 int sampler_window_position_; |
| 119 int sampler_window_weight_[kSamplerWindowSize]; | 119 int sampler_window_weight_[kSamplerWindowSize]; |
| 120 | 120 |
| 121 // Support for pending 'optimize soon' requests. | 121 // Support for pending 'optimize soon' requests. |
| 122 PendingListNode* optimize_soon_list_; | 122 PendingListNode* optimize_soon_list_; |
| 123 | 123 |
| 124 // Possible state values: | 124 // Possible state values: |
| 125 // -1 => the profiler thread is waiting on the semaphore | 125 // -1 => the profiler thread is waiting on the semaphore |
| 126 // 0 or positive => the number of isolates running JavaScript code. | 126 // 0 or positive => the number of isolates running JavaScript code. |
| 127 static Atomic32 state_; | 127 static Atomic32 state_; |
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| 165 | 165 |
| 166 void RuntimeProfiler::IsolateExitedJS(Isolate* isolate) { | 166 void RuntimeProfiler::IsolateExitedJS(Isolate* isolate) { |
| 167 Atomic32 new_state = NoBarrier_AtomicIncrement(&state_, -1); | 167 Atomic32 new_state = NoBarrier_AtomicIncrement(&state_, -1); |
| 168 ASSERT(new_state >= 0); | 168 ASSERT(new_state >= 0); |
| 169 USE(new_state); | 169 USE(new_state); |
| 170 } | 170 } |
| 171 | 171 |
| 172 } } // namespace v8::internal | 172 } } // namespace v8::internal |
| 173 | 173 |
| 174 #endif // V8_RUNTIME_PROFILER_H_ | 174 #endif // V8_RUNTIME_PROFILER_H_ |
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