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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef BASE_PROFILER_CPU_PROFILER_H_ |
| 6 #define BASE_PROFILER_CPU_PROFILER_H_ |
| 7 |
| 8 #include <map> |
| 9 |
| 10 #include "base/base_export.h" |
| 11 #include "base/memory/scoped_ptr.h" |
| 12 #include "base/strings/string16.h" |
| 13 #include "base/synchronization/waitable_event.h" |
| 14 #include "base/timer/timer.h" |
| 15 |
| 16 #if defined(OS_WIN) |
| 17 struct _CONTEXT; |
| 18 #endif |
| 19 |
| 20 namespace base { |
| 21 |
| 22 class SamplingThread : public PlatformThread::Delegate { |
| 23 public: |
| 24 SamplingThread(); |
| 25 ~SamplingThread() override; |
| 26 |
| 27 // Implementation of PlatformThread::Delegate: |
| 28 void ThreadMain() override; |
| 29 |
| 30 void Stop(); |
| 31 |
| 32 void GetSamples(); |
| 33 |
| 34 private: |
| 35 bool thread_running_; |
| 36 |
| 37 base::WaitableEvent waitable_event_; |
| 38 |
| 39 DISALLOW_COPY_AND_ASSIGN(SamplingThread); |
| 40 }; |
| 41 |
| 42 #if defined(OS_WIN) |
| 43 struct StackTraceEntry { |
| 44 DWORD64 rsp; |
| 45 DWORD64 rip; |
| 46 HMODULE module; |
| 47 }; |
| 48 #endif |
| 49 |
| 50 class BASE_EXPORT CpuProfiler { |
| 51 public: |
| 52 static void Initialize(const std::map<std::string, std::string>& params); |
| 53 static CpuProfiler* GetInstance(); |
| 54 static bool IsPlatformSupported(); |
| 55 static void Stop(); |
| 56 |
| 57 std::string GetStringParam(const std::string& key); |
| 58 int GetIntParam(const std::string& key); |
| 59 int64 GetInt64Param(const std::string& key); |
| 60 |
| 61 void OnTimer(); |
| 62 |
| 63 private: |
| 64 CpuProfiler(); |
| 65 ~CpuProfiler(); |
| 66 |
| 67 void SetParams(const std::map<std::string, std::string>& params); |
| 68 |
| 69 void GetThreadIds(); |
| 70 |
| 71 #if defined(OS_WIN) |
| 72 void ProcessStack(StackTraceEntry* stack, int stack_depth); |
| 73 |
| 74 HANDLE main_thread_; |
| 75 int main_thread_stack_depth_; |
| 76 StackTraceEntry main_thread_stack_[64]; |
| 77 |
| 78 std::map<HMODULE, base::string16> modules_; |
| 79 #endif |
| 80 |
| 81 static CpuProfiler* g_instance_; |
| 82 |
| 83 std::map<std::string, std::string> params_; |
| 84 |
| 85 scoped_ptr<SamplingThread> sampling_thread_; |
| 86 PlatformThreadHandle sampling_thread_handle_; |
| 87 |
| 88 DISALLOW_COPY_AND_ASSIGN(CpuProfiler); |
| 89 }; |
| 90 |
| 91 } // namespace base |
| 92 |
| 93 #endif // BASE_PROFILER_CPU_PROFILER_H_ |
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