| // Copyright 2017 The Chromium Authors |
| // 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 <memory> |
| |
| #include "base/check.h" |
| #include "base/functional/bind.h" |
| #include "base/memory/ptr_util.h" |
| #include "base/profiler/frame_pointer_unwinder.h" |
| #include "base/profiler/stack_copier_suspend.h" |
| #include "base/profiler/suspendable_thread_delegate_mac.h" |
| #include "base/profiler/unwinder.h" |
| |
| namespace base { |
| |
| namespace { |
| |
| std::vector<std::unique_ptr<Unwinder>> CreateUnwinders() { |
| std::vector<std::unique_ptr<Unwinder>> unwinders; |
| unwinders.push_back(std::make_unique<FramePointerUnwinder>()); |
| return unwinders; |
| } |
| |
| } // namespace |
| |
| // static |
| std::unique_ptr<StackSampler> StackSampler::Create( |
| SamplingProfilerThreadToken thread_token, |
| ModuleCache* module_cache, |
| UnwindersFactory core_unwinders_factory, |
| RepeatingClosure record_sample_callback, |
| StackSamplerTestDelegate* test_delegate) { |
| DCHECK(!core_unwinders_factory); |
| return base::WrapUnique(new StackSampler( |
| std::make_unique<StackCopierSuspend>( |
| std::make_unique<SuspendableThreadDelegateMac>(thread_token)), |
| BindOnce(&CreateUnwinders), module_cache, |
| std::move(record_sample_callback), test_delegate)); |
| } |
| |
| // static |
| size_t StackSampler::GetStackBufferSize() { |
| size_t stack_size = PlatformThread::GetDefaultThreadStackSize(); |
| |
| // If getrlimit somehow fails, return the default macOS main thread stack size |
| // of 8 MB (DFLSSIZ in <i386/vmparam.h>) with extra wiggle room. |
| return stack_size > 0 ? stack_size : 12 * 1024 * 1024; |
| } |
| |
| } // namespace base |