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// Copyright 2021 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 "base/memory/ptr_util.h"
#include "base/profiler/profiler_buildflags.h"
#include "build/build_config.h"
#if BUILDFLAG(IOS_STACK_PROFILER_ENABLED)
#include "base/profiler/stack_copier_suspend.h"
#include "base/profiler/suspendable_thread_delegate_mac.h"
#endif
namespace base {
// static
std::unique_ptr<StackSampler> StackSampler::Create(
SamplingProfilerThreadToken thread_token,
std::unique_ptr<StackUnwindData> stack_unwind_data,
UnwindersFactory core_unwinders_factory,
RepeatingClosure record_sample_callback,
StackSamplerTestDelegate* test_delegate) {
#if BUILDFLAG(IOS_STACK_PROFILER_ENABLED)
return base::WrapUnique(new StackSampler(
std::make_unique<StackCopierSuspend>(
std::make_unique<SuspendableThreadDelegateMac>(thread_token)),
std::move(stack_unwind_data), std::move(core_unwinders_factory),
std::move(record_sample_callback), test_delegate));
#else
return nullptr;
#endif
}
// static
size_t StackSampler::GetStackBufferSize() {
#if BUILDFLAG(IOS_STACK_PROFILER_ENABLED)
size_t stack_size = PlatformThread::GetDefaultThreadStackSize();
// If getrlimit somehow fails, return the default iOS main thread stack size
// of 1 MB with extra wiggle room.
return stack_size > 0 ? stack_size : 1536 * 1024;
#else
return 0;
#endif
}
} // namespace base