67 lines
2.2 KiB
C
67 lines
2.2 KiB
C
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// Copyright 2019 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_PROFILER_SUSPENDABLE_THREAD_DELEGATE_MAC_H_
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#define BASE_PROFILER_SUSPENDABLE_THREAD_DELEGATE_MAC_H_
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#include <mach/mach.h>
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#include "base/base_export.h"
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#include "base/profiler/module_cache.h"
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#include "base/profiler/native_unwinder_mac.h"
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#include "base/profiler/sampling_profiler_thread_token.h"
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#include "base/profiler/suspendable_thread_delegate.h"
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#include "base/threading/platform_thread.h"
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namespace base {
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// Platform- and thread-specific implementation in support of stack sampling on
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// Mac.
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class BASE_EXPORT SuspendableThreadDelegateMac
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: public SuspendableThreadDelegate {
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public:
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class ScopedSuspendThread
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: public SuspendableThreadDelegate::ScopedSuspendThread {
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public:
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explicit ScopedSuspendThread(mach_port_t thread_port);
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~ScopedSuspendThread() override;
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ScopedSuspendThread(const ScopedSuspendThread&) = delete;
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ScopedSuspendThread& operator=(const ScopedSuspendThread&) = delete;
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bool WasSuccessful() const override;
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private:
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mach_port_t thread_port_;
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};
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SuspendableThreadDelegateMac(SamplingProfilerThreadToken thread_token);
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~SuspendableThreadDelegateMac() override;
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SuspendableThreadDelegateMac(const SuspendableThreadDelegateMac&) = delete;
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SuspendableThreadDelegateMac& operator=(const SuspendableThreadDelegateMac&) =
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delete;
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// SuspendableThreadDelegate
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std::unique_ptr<SuspendableThreadDelegate::ScopedSuspendThread>
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CreateScopedSuspendThread() override;
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bool GetThreadContext(x86_thread_state64_t* thread_context) override;
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PlatformThreadId GetThreadId() const override;
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uintptr_t GetStackBaseAddress() const override;
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bool CanCopyStack(uintptr_t stack_pointer) override;
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std::vector<uintptr_t*> GetRegistersToRewrite(
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x86_thread_state64_t* thread_context) override;
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private:
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// Weak reference: Mach port for thread being profiled.
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const mach_port_t thread_port_;
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// The stack base address corresponding to |thread_port_|.
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const uintptr_t thread_stack_base_address_;
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};
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} // namespace base
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#endif // BASE_PROFILER_SUSPENDABLE_THREAD_DELEGATE_MAC_H_
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