62 lines
2.3 KiB
C++
62 lines
2.3 KiB
C++
// 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_STACK_SAMPLER_IMPL_H_
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#define BASE_PROFILER_STACK_SAMPLER_IMPL_H_
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#include <memory>
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#include "base/base_export.h"
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#include "base/profiler/frame.h"
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#include "base/profiler/register_context.h"
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#include "base/profiler/stack_copier.h"
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#include "base/profiler/stack_sampler.h"
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namespace base {
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class Unwinder;
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// Cross-platform stack sampler implementation. Delegates to StackCopier for the
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// platform-specific stack copying implementation.
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class BASE_EXPORT StackSamplerImpl : public StackSampler {
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public:
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StackSamplerImpl(std::unique_ptr<StackCopier> stack_copier,
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std::unique_ptr<Unwinder> native_unwinder,
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ModuleCache* module_cache,
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StackSamplerTestDelegate* test_delegate = nullptr);
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~StackSamplerImpl() override;
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StackSamplerImpl(const StackSamplerImpl&) = delete;
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StackSamplerImpl& operator=(const StackSamplerImpl&) = delete;
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// StackSampler:
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void AddAuxUnwinder(std::unique_ptr<Unwinder> unwinder) override;
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void RecordStackFrames(StackBuffer* stack_buffer,
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ProfileBuilder* profile_builder) override;
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// Exposes the internal function for unit testing.
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static std::vector<Frame> WalkStackForTesting(ModuleCache* module_cache,
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RegisterContext* thread_context,
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uintptr_t stack_top,
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Unwinder* native_unwinder,
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Unwinder* aux_unwinder);
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private:
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static std::vector<Frame> WalkStack(ModuleCache* module_cache,
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RegisterContext* thread_context,
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uintptr_t stack_top,
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Unwinder* native_unwinder,
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Unwinder* aux_unwinder);
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const std::unique_ptr<StackCopier> stack_copier_;
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const std::unique_ptr<Unwinder> native_unwinder_;
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std::unique_ptr<Unwinder> aux_unwinder_;
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ModuleCache* const module_cache_;
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StackSamplerTestDelegate* const test_delegate_;
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};
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} // namespace base
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#endif // BASE_PROFILER_STACK_SAMPLER_IMPL_H_
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