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