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52 lines
1.7 KiB
C++
52 lines
1.7 KiB
C++
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// Copyright 2017 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/bind.h"
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#include "base/check.h"
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#include "base/profiler/native_unwinder_mac.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_mac.h"
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namespace base {
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namespace {
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std::vector<std::unique_ptr<Unwinder>> CreateUnwinders(
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ModuleCache* module_cache) {
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std::vector<std::unique_ptr<Unwinder>> unwinders;
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unwinders.push_back(std::make_unique<NativeUnwinderMac>(module_cache));
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return unwinders;
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}
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} // namespace
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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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UnwindersFactory core_unwinders_factory,
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RepeatingClosure record_sample_callback,
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StackSamplerTestDelegate* test_delegate) {
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DCHECK(!core_unwinders_factory);
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return std::make_unique<StackSamplerImpl>(
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std::make_unique<StackCopierSuspend>(
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std::make_unique<SuspendableThreadDelegateMac>(thread_token)),
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BindOnce(&CreateUnwinders, Unretained(module_cache)), module_cache,
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std::move(record_sample_callback), test_delegate);
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}
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// static
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size_t StackSampler::GetStackBufferSize() {
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size_t stack_size = PlatformThread::GetDefaultThreadStackSize();
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// If getrlimit somehow fails, return the default macOS main thread stack size
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// of 8 MB (DFLSSIZ in <i386/vmparam.h>) with extra wiggle room.
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return stack_size > 0 ? stack_size : 12 * 1024 * 1024;
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}
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} // namespace base
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