1 // Copyright 2019 The Chromium Authors 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_THREAD_DELEGATE_POSIX_H_ 6 #define BASE_PROFILER_THREAD_DELEGATE_POSIX_H_ 7 8 #include <memory> 9 #include <vector> 10 11 #include "base/base_export.h" 12 #include "base/profiler/sampling_profiler_thread_token.h" 13 #include "base/profiler/thread_delegate.h" 14 #include "base/threading/platform_thread.h" 15 16 namespace base { 17 18 // Platform- and thread-specific implementation in support of stack sampling on 19 // POSIX. 20 class BASE_EXPORT ThreadDelegatePosix : public ThreadDelegate { 21 public: 22 static std::unique_ptr<ThreadDelegatePosix> Create( 23 SamplingProfilerThreadToken thread_token); 24 25 ~ThreadDelegatePosix() override; 26 27 ThreadDelegatePosix(const ThreadDelegatePosix&) = delete; 28 ThreadDelegatePosix& operator=(const ThreadDelegatePosix&) = delete; 29 30 // ThreadDelegate 31 PlatformThreadId GetThreadId() const override; 32 uintptr_t GetStackBaseAddress() const override; 33 std::vector<uintptr_t*> GetRegistersToRewrite( 34 RegisterContext* thread_context) override; 35 36 private: 37 ThreadDelegatePosix(PlatformThreadId id, uintptr_t base_address); 38 39 const PlatformThreadId thread_id_; 40 const uintptr_t thread_stack_base_address_; 41 }; 42 43 } // namespace base 44 45 #endif // BASE_PROFILER_THREAD_DELEGATE_POSIX_H_ 46