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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#include "base/profiler/stack_sampler.h"
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#include <pthread.h>
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#include "base/profiler/stack_copier_signal.h"
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#include "base/profiler/stack_sampler_impl.h"
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#include "base/profiler/thread_delegate_posix.h"
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#include "base/profiler/unwinder.h"
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#include "base/threading/platform_thread.h"
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namespace base {
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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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return std::make_unique<StackSamplerImpl>(
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std::make_unique<StackCopierSignal>(
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std::make_unique<ThreadDelegatePosix>(thread_token)),
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std::move(native_unwinder), module_cache, test_delegate);
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}
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size_t StackSampler::GetStackBufferSize() {
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size_t stack_size = PlatformThread::GetDefaultThreadStackSize();
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pthread_attr_t attr;
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if (stack_size == 0 && pthread_attr_init(&attr) == 0) {
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if (pthread_attr_getstacksize(&attr, &stack_size) != 0)
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stack_size = 0;
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pthread_attr_destroy(&attr);
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}
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// 1MB is default thread limit set by Android at art/runtime/thread_pool.h.
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constexpr size_t kDefaultStackLimit = 1 << 20;
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return stack_size > 0 ? stack_size : kDefaultStackLimit;
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}
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} // namespace base
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