Repo created

TMessagesProj/jni/voip/webrtc/base/profiler/stack_sampler_android.cc

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+// 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/stack_copier_signal.h"
+#include "base/profiler/stack_sampler_impl.h"
+#include "base/profiler/thread_delegate_posix.h"
+#include "base/profiler/unwinder.h"
+#include "base/threading/platform_thread.h"
+
+namespace base {
+
+std::unique_ptr<StackSampler> StackSampler::Create(
+    SamplingProfilerThreadToken thread_token,
+    ModuleCache* module_cache,
+    StackSamplerTestDelegate* test_delegate,
+    std::unique_ptr<Unwinder> native_unwinder) {
+  return std::make_unique<StackSamplerImpl>(
+      std::make_unique<StackCopierSignal>(
+          std::make_unique<ThreadDelegatePosix>(thread_token)),
+      std::move(native_unwinder), 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