| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "base/profiler/stack_sampler.h" |
| |
| #include <pthread.h> |
| |
| #include "base/threading/platform_thread.h" |
| #include "build/build_config.h" |
| |
| namespace base { |
| |
| std::unique_ptr<StackSampler> StackSampler::Create( |
| SamplingProfilerThreadToken thread_token, |
| ModuleCache* module_cache, |
| std::vector<std::unique_ptr<Unwinder>> core_unwinders, |
| StackSamplerTestDelegate* test_delegate) { |
| return nullptr; |
| } |
| |
| size_t StackSampler::GetStackBufferSize() { |
| size_t stack_size = PlatformThread::GetDefaultThreadStackSize(); |
| |
| pthread_attr_t attr; |
| if (stack_size == 0 && pthread_attr_init(&attr) == 0) { |
| if (pthread_attr_getstacksize(&attr, &stack_size) != 0) |
| stack_size = 0; |
| pthread_attr_destroy(&attr); |
| } |
| |
| // Maximum limits under NPTL implementation. |
| constexpr size_t kDefaultStackLimit = 4 * (1 << 20); |
| return stack_size > 0 ? stack_size : kDefaultStackLimit; |
| } |
| |
| } // namespace base |