| // Copyright 2019 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/profiler/native_unwinder_android.h" |
| #include "base/profiler/stack_copier_signal.h" |
| #include "base/profiler/stack_sampler_impl.h" |
| #include "base/profiler/thread_delegate_android.h" |
| #include "base/threading/platform_thread.h" |
| |
| namespace base { |
| |
| std::unique_ptr<StackSampler> StackSampler::Create( |
| PlatformThreadId thread_id, |
| ModuleCache* module_cache, |
| StackSamplerTestDelegate* test_delegate) { |
| return std::make_unique<StackSamplerImpl>( |
| std::make_unique<StackCopierSignal>( |
| std::make_unique<ThreadDelegateAndroid>(thread_id)), |
| std::make_unique<NativeUnwinderAndroid>(), module_cache, test_delegate); |
| } |
| |
| 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); |
| } |
| |
| // 1MB is default thread limit set by Android at art/runtime/thread_pool.h. |
| constexpr size_t kDefaultStackLimit = 1 << 20; |
| return stack_size > 0 ? stack_size : kDefaultStackLimit; |
| } |
| |
| } // namespace base |