68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
// Copyright 2021 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/profiler/stack_sampler.h"
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#include "base/memory/ptr_util.h"
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#include "base/profiler/profiler_buildflags.h"
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#include "build/build_config.h"
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#if BUILDFLAG(IOS_STACK_PROFILER_ENABLED)
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#include "base/check.h"
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#include "base/functional/bind.h"
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#include "base/profiler/frame_pointer_unwinder.h"
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#include "base/profiler/stack_copier_suspend.h"
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#include "base/profiler/suspendable_thread_delegate_mac.h"
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#endif
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namespace base {
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#if BUILDFLAG(IOS_STACK_PROFILER_ENABLED)
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namespace {
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std::vector<std::unique_ptr<Unwinder>> CreateUnwinders() {
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std::vector<std::unique_ptr<Unwinder>> unwinders;
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if (__builtin_available(iOS 12.0, *)) {
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unwinders.push_back(std::make_unique<FramePointerUnwinder>());
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}
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return unwinders;
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}
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} // namespace
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#endif
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// static
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std::unique_ptr<StackSampler> StackSampler::Create(
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SamplingProfilerThreadToken thread_token,
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ModuleCache* module_cache,
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UnwindersFactory core_unwinders_factory,
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RepeatingClosure record_sample_callback,
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StackSamplerTestDelegate* test_delegate) {
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DCHECK(!core_unwinders_factory);
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#if BUILDFLAG(IOS_STACK_PROFILER_ENABLED)
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return base::WrapUnique(new StackSampler(
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std::make_unique<StackCopierSuspend>(
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std::make_unique<SuspendableThreadDelegateMac>(thread_token)),
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BindOnce(&CreateUnwinders), module_cache,
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std::move(record_sample_callback), test_delegate));
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#else
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return nullptr;
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#endif
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}
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// static
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size_t StackSampler::GetStackBufferSize() {
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#if BUILDFLAG(IOS_STACK_PROFILER_ENABLED)
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size_t stack_size = PlatformThread::GetDefaultThreadStackSize();
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// If getrlimit somehow fails, return the default iOS main thread stack size
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// of 1 MB with extra wiggle room.
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return stack_size > 0 ? stack_size : 1536 * 1024;
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#else
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return 0;
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#endif
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}
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} // namespace base
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