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_STACK_COPIER_SIGNAL_H_ 6 #define BASE_PROFILER_STACK_COPIER_SIGNAL_H_ 7 8 #include <memory> 9 10 #include "base/base_export.h" 11 #include "base/profiler/stack_copier.h" 12 13 namespace base { 14 15 class ThreadDelegate; 16 17 // Supports stack copying on platforms where a signal must be delivered to the 18 // profiled thread and the stack is copied from the signal handler. 19 class BASE_EXPORT StackCopierSignal : public StackCopier { 20 public: 21 StackCopierSignal(std::unique_ptr<ThreadDelegate> thread_delegate); 22 ~StackCopierSignal() override; 23 24 // StackCopier: 25 bool CopyStack(StackBuffer* stack_buffer, 26 uintptr_t* stack_top, 27 TimeTicks* timestamp, 28 RegisterContext* thread_context, 29 Delegate* delegate) override; 30 31 using StackCopier::CopyStackContentsAndRewritePointers; 32 33 protected: 34 std::vector<uintptr_t*> GetRegistersToRewrite( 35 RegisterContext* thread_context) override; 36 37 private: 38 std::unique_ptr<ThreadDelegate> thread_delegate_; 39 }; 40 41 } // namespace base 42 43 #endif // BASE_PROFILER_STACK_COPIER_SIGNAL_H_ 44