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51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_PROFILER_NATIVE_STACK_SAMPLER_H_
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#define BASE_PROFILER_NATIVE_STACK_SAMPLER_H_
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#include "base/memory/scoped_ptr.h"
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#include "base/profiler/stack_sampling_profiler.h"
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#include "base/threading/platform_thread.h"
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namespace base {
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// NativeStackSampler is an implementation detail of StackSamplingProfiler. It
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// abstracts the native implementation required to record a stack sample for a
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// given thread.
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class NativeStackSampler {
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public:
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virtual ~NativeStackSampler();
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// Creates a stack sampler that records samples for |thread_handle|. Returns
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// null if this platform does not support stack sampling.
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static scoped_ptr<NativeStackSampler> Create(PlatformThreadId thread_id);
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// The following functions are all called on the SamplingThread (not the
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// thread being sampled).
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// Notifies the sampler that we're starting to record a new profile. Modules
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// shared across samples in the profile should be recorded in |modules|.
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virtual void ProfileRecordingStarting(
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std::vector<StackSamplingProfiler::Module>* modules) = 0;
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// Records a stack sample to |sample|.
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virtual void RecordStackSample(StackSamplingProfiler::Sample* sample) = 0;
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// Notifies the sampler that we've stopped recording the current
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// profile.
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virtual void ProfileRecordingStopped() = 0;
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protected:
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NativeStackSampler();
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private:
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DISALLOW_COPY_AND_ASSIGN(NativeStackSampler);
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};
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} // namespace base
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#endif // BASE_PROFILER_NATIVE_STACK_SAMPLER_H_
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