// Copyright 2019 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_THREAD_DELEGATE_H_ #define BASE_PROFILER_THREAD_DELEGATE_H_ #include #include "base/base_export.h" #include "base/profiler/register_context.h" #include "base/threading/platform_thread.h" namespace base { // Platform-specific thread and stack manipulation delegate, for use by the // platform-independent stack copying/walking implementation in // StackSamplerImpl. Provides the common interface across signal- and // suspend-based stack copy implementations. class BASE_EXPORT ThreadDelegate { public: ThreadDelegate() = default; virtual ~ThreadDelegate() = default; ThreadDelegate(const ThreadDelegate&) = delete; ThreadDelegate& operator=(const ThreadDelegate&) = delete; // Gets the platform-specific id for the thread. virtual PlatformThreadId GetThreadId() const = 0; // Gets the base address of the thread's stack. virtual uintptr_t GetStackBaseAddress() const = 0; // Returns a list of registers that should be rewritten to point into the // stack copy, if they originally pointed into the original stack. // May heap allocate. virtual std::vector GetRegistersToRewrite( RegisterContext* thread_context) = 0; }; } // namespace base #endif // BASE_PROFILER_THREAD_DELEGATE_H_