forked from chromium/chromium
-
Notifications
You must be signed in to change notification settings - Fork 0
/
native_stack_sampler.h
50 lines (36 loc) · 1.61 KB
/
native_stack_sampler.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_PROFILER_NATIVE_STACK_SAMPLER_H_
#define BASE_PROFILER_NATIVE_STACK_SAMPLER_H_
#include "base/memory/scoped_ptr.h"
#include "base/profiler/stack_sampling_profiler.h"
#include "base/threading/platform_thread.h"
namespace base {
// NativeStackSampler is an implementation detail of StackSamplingProfiler. It
// abstracts the native implementation required to record a stack sample for a
// given thread.
class NativeStackSampler {
public:
virtual ~NativeStackSampler();
// Creates a stack sampler that records samples for |thread_handle|. Returns
// null if this platform does not support stack sampling.
static scoped_ptr<NativeStackSampler> Create(PlatformThreadId thread_id);
// The following functions are all called on the SamplingThread (not the
// thread being sampled).
// Notifies the sampler that we're starting to record a new profile. Modules
// shared across samples in the profile should be recorded in |modules|.
virtual void ProfileRecordingStarting(
std::vector<StackSamplingProfiler::Module>* modules) = 0;
// Records a stack sample to |sample|.
virtual void RecordStackSample(StackSamplingProfiler::Sample* sample) = 0;
// Notifies the sampler that we've stopped recording the current
// profile.
virtual void ProfileRecordingStopped() = 0;
protected:
NativeStackSampler();
private:
DISALLOW_COPY_AND_ASSIGN(NativeStackSampler);
};
} // namespace base
#endif // BASE_PROFILER_NATIVE_STACK_SAMPLER_H_