// 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 "base/bind.h" #include "base/check.h" #include "base/profiler/native_unwinder_win.h" #include "base/profiler/stack_copier_suspend.h" #include "base/profiler/stack_sampler_impl.h" #include "base/profiler/suspendable_thread_delegate_win.h" #include "build/build_config.h" namespace base { // static std::unique_ptr StackSampler::Create( SamplingProfilerThreadToken thread_token, ModuleCache* module_cache, UnwindersFactory core_unwinders_factory, RepeatingClosure record_sample_callback, StackSamplerTestDelegate* test_delegate) { DCHECK(!core_unwinders_factory); #if defined(ARCH_CPU_X86_64) || defined(ARCH_CPU_ARM64) const auto create_unwinders = []() { std::vector> unwinders; unwinders.push_back(std::make_unique()); return unwinders; }; return std::make_unique( std::make_unique( std::make_unique(thread_token)), BindOnce(create_unwinders), module_cache, std::move(record_sample_callback), test_delegate); #else return nullptr; #endif } // static size_t StackSampler::GetStackBufferSize() { // The default Win32 reserved stack size is 1 MB and Chrome Windows threads // currently always use the default, but this allows for expansion if it // occurs. The size beyond the actual stack size consists of unallocated // virtual memory pages so carries little cost (just a bit of wasted address // space). return 2 << 20; // 2 MiB } } // namespace base