| // 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_MAC_H_ |
| #define BASE_PROFILER_THREAD_DELEGATE_MAC_H_ |
| |
| #include <mach/mach.h> |
| |
| #include "base/base_export.h" |
| #include "base/profiler/native_unwinder_mac.h" |
| #include "base/profiler/thread_delegate.h" |
| #include "base/sampling_heap_profiler/module_cache.h" |
| #include "base/threading/platform_thread.h" |
| |
| namespace base { |
| |
| // Platform- and thread-specific implementation in support of stack sampling on |
| // Mac. |
| class BASE_EXPORT ThreadDelegateMac : public ThreadDelegate { |
| public: |
| class ScopedSuspendThread : public ThreadDelegate::ScopedSuspendThread { |
| public: |
| explicit ScopedSuspendThread(mach_port_t thread_port); |
| ~ScopedSuspendThread() override; |
| |
| ScopedSuspendThread(const ScopedSuspendThread&) = delete; |
| ScopedSuspendThread& operator=(const ScopedSuspendThread&) = delete; |
| |
| bool WasSuccessful() const override; |
| |
| private: |
| mach_port_t thread_port_; |
| }; |
| |
| ThreadDelegateMac(mach_port_t thread_port); |
| ~ThreadDelegateMac() override; |
| |
| ThreadDelegateMac(const ThreadDelegateMac&) = delete; |
| ThreadDelegateMac& operator=(const ThreadDelegateMac&) = delete; |
| |
| // ThreadDelegate |
| std::unique_ptr<ThreadDelegate::ScopedSuspendThread> |
| CreateScopedSuspendThread() override; |
| bool GetThreadContext(x86_thread_state64_t* thread_context) override; |
| uintptr_t GetStackBaseAddress() const override; |
| bool CanCopyStack(uintptr_t stack_pointer) override; |
| std::vector<uintptr_t*> GetRegistersToRewrite( |
| x86_thread_state64_t* thread_context) override; |
| |
| private: |
| // Weak reference: Mach port for thread being profiled. |
| mach_port_t thread_port_; |
| |
| // The stack base address corresponding to |thread_port_|. |
| const uintptr_t thread_stack_base_address_; |
| }; |
| |
| } // namespace base |
| |
| #endif // BASE_PROFILER_THREAD_DELEGATE_MAC_H_ |