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