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| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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| 58 | 58 |
| 59 static const int kSizeLimit = 1500; | 59 static const int kSizeLimit = 1500; |
| 60 | 60 |
| 61 | 61 |
| 62 Atomic32 RuntimeProfiler::state_ = 0; | 62 Atomic32 RuntimeProfiler::state_ = 0; |
| 63 // TODO(isolates): Create the semaphore lazily and clean it up when no | 63 // TODO(isolates): Create the semaphore lazily and clean it up when no |
| 64 // longer required. | 64 // longer required. |
| 65 Semaphore* RuntimeProfiler::semaphore_ = OS::CreateSemaphore(0); | 65 Semaphore* RuntimeProfiler::semaphore_ = OS::CreateSemaphore(0); |
| 66 | 66 |
| 67 #ifdef DEBUG | 67 #ifdef DEBUG |
| 68 bool RuntimeProfiler::has_been_globally_setup_ = false; | 68 bool RuntimeProfiler::has_been_globally_set_up_ = false; |
| 69 #endif | 69 #endif |
| 70 bool RuntimeProfiler::enabled_ = false; | 70 bool RuntimeProfiler::enabled_ = false; |
| 71 | 71 |
| 72 | 72 |
| 73 RuntimeProfiler::RuntimeProfiler(Isolate* isolate) | 73 RuntimeProfiler::RuntimeProfiler(Isolate* isolate) |
| 74 : isolate_(isolate), | 74 : isolate_(isolate), |
| 75 sampler_threshold_(kSamplerThresholdInit), | 75 sampler_threshold_(kSamplerThresholdInit), |
| 76 sampler_threshold_size_factor_(kSamplerThresholdSizeFactorInit), | 76 sampler_threshold_size_factor_(kSamplerThresholdSizeFactorInit), |
| 77 sampler_ticks_until_threshold_adjustment_( | 77 sampler_ticks_until_threshold_adjustment_( |
| 78 kSamplerTicksBetweenThresholdAdjustment), | 78 kSamplerTicksBetweenThresholdAdjustment), |
| 79 sampler_window_position_(0) { | 79 sampler_window_position_(0) { |
| 80 ClearSampleBuffer(); | 80 ClearSampleBuffer(); |
| 81 } | 81 } |
| 82 | 82 |
| 83 | 83 |
| 84 void RuntimeProfiler::GlobalSetup() { | 84 void RuntimeProfiler::GlobalSetup() { |
| 85 ASSERT(!has_been_globally_setup_); | 85 ASSERT(!has_been_globally_set_up_); |
| 86 enabled_ = V8::UseCrankshaft() && FLAG_opt; | 86 enabled_ = V8::UseCrankshaft() && FLAG_opt; |
| 87 #ifdef DEBUG | 87 #ifdef DEBUG |
| 88 has_been_globally_setup_ = true; | 88 has_been_globally_set_up_ = true; |
| 89 #endif | 89 #endif |
| 90 } | 90 } |
| 91 | 91 |
| 92 | 92 |
| 93 void RuntimeProfiler::Optimize(JSFunction* function) { | 93 void RuntimeProfiler::Optimize(JSFunction* function) { |
| 94 ASSERT(function->IsOptimizable()); | 94 ASSERT(function->IsOptimizable()); |
| 95 if (FLAG_trace_opt) { | 95 if (FLAG_trace_opt) { |
| 96 PrintF("[marking "); | 96 PrintF("[marking "); |
| 97 function->PrintName(); | 97 function->PrintName(); |
| 98 PrintF(" 0x%" V8PRIxPTR, reinterpret_cast<intptr_t>(function->address())); | 98 PrintF(" 0x%" V8PRIxPTR, reinterpret_cast<intptr_t>(function->address())); |
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| 238 AddSample(samples[i], kSamplerFrameWeight[i]); | 238 AddSample(samples[i], kSamplerFrameWeight[i]); |
| 239 } | 239 } |
| 240 } | 240 } |
| 241 | 241 |
| 242 | 242 |
| 243 void RuntimeProfiler::NotifyTick() { | 243 void RuntimeProfiler::NotifyTick() { |
| 244 isolate_->stack_guard()->RequestRuntimeProfilerTick(); | 244 isolate_->stack_guard()->RequestRuntimeProfilerTick(); |
| 245 } | 245 } |
| 246 | 246 |
| 247 | 247 |
| 248 void RuntimeProfiler::Setup() { | 248 void RuntimeProfiler::SetUp() { |
| 249 ASSERT(has_been_globally_setup_); | 249 ASSERT(has_been_globally_set_up_); |
| 250 ClearSampleBuffer(); | 250 ClearSampleBuffer(); |
| 251 // If the ticker hasn't already started, make sure to do so to get | 251 // If the ticker hasn't already started, make sure to do so to get |
| 252 // the ticks for the runtime profiler. | 252 // the ticks for the runtime profiler. |
| 253 if (IsEnabled()) isolate_->logger()->EnsureTickerStarted(); | 253 if (IsEnabled()) isolate_->logger()->EnsureTickerStarted(); |
| 254 } | 254 } |
| 255 | 255 |
| 256 | 256 |
| 257 void RuntimeProfiler::Reset() { | 257 void RuntimeProfiler::Reset() { |
| 258 sampler_threshold_ = kSamplerThresholdInit; | 258 sampler_threshold_ = kSamplerThresholdInit; |
| 259 sampler_threshold_size_factor_ = kSamplerThresholdSizeFactorInit; | 259 sampler_threshold_size_factor_ = kSamplerThresholdSizeFactorInit; |
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| 355 | 355 |
| 356 bool RuntimeProfilerRateLimiter::SuspendIfNecessary() { | 356 bool RuntimeProfilerRateLimiter::SuspendIfNecessary() { |
| 357 if (!RuntimeProfiler::IsSomeIsolateInJS()) { | 357 if (!RuntimeProfiler::IsSomeIsolateInJS()) { |
| 358 return RuntimeProfiler::WaitForSomeIsolateToEnterJS(); | 358 return RuntimeProfiler::WaitForSomeIsolateToEnterJS(); |
| 359 } | 359 } |
| 360 return false; | 360 return false; |
| 361 } | 361 } |
| 362 | 362 |
| 363 | 363 |
| 364 } } // namespace v8::internal | 364 } } // namespace v8::internal |
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