43 lines
1.4 KiB
C++
43 lines
1.4 KiB
C++
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// Copyright 2015 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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#include "base/profiler/stack_sampler.h"
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#include "base/profiler/native_unwinder_win.h"
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#include "base/profiler/stack_copier_suspend.h"
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#include "base/profiler/stack_sampler_impl.h"
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#include "base/profiler/suspendable_thread_delegate_win.h"
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#include "build/build_config.h"
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namespace base {
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// static
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std::unique_ptr<StackSampler> StackSampler::Create(
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SamplingProfilerThreadToken thread_token,
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ModuleCache* module_cache,
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StackSamplerTestDelegate* test_delegate,
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std::unique_ptr<Unwinder> native_unwinder) {
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DCHECK(!native_unwinder);
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#if defined(ARCH_CPU_X86_64) || defined(ARCH_CPU_ARM64)
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return std::make_unique<StackSamplerImpl>(
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std::make_unique<StackCopierSuspend>(
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std::make_unique<SuspendableThreadDelegateWin>(thread_token)),
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std::make_unique<NativeUnwinderWin>(), module_cache, test_delegate);
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#else
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return nullptr;
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#endif
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}
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// static
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size_t StackSampler::GetStackBufferSize() {
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// The default Win32 reserved stack size is 1 MB and Chrome Windows threads
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// currently always use the default, but this allows for expansion if it
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// occurs. The size beyond the actual stack size consists of unallocated
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// virtual memory pages so carries little cost (just a bit of wasted address
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// space).
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return 2 << 20; // 2 MiB
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}
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} // namespace base
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