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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.
#ifndef CONTENT_PUBLIC_COMMON_PROFILING_UTILS_H_
#define CONTENT_PUBLIC_COMMON_PROFILING_UTILS_H_
#include <string>
#include <vector>
#include "base/callback_forward.h"
#include "base/files/file.h"
#include "base/synchronization/waitable_event.h"
#include "content/common/content_export.h"
namespace content {
// Open the file that should be used by a child process to save its profiling
// data.
CONTENT_EXPORT base::File OpenProfilingFile();
// Serves WaitableEvent that should be used by the child processes to signal
// that they have finished dumping the profiling data.
class CONTENT_EXPORT WaitForProcessesToDumpProfilingInfo {
public:
WaitForProcessesToDumpProfilingInfo();
~WaitForProcessesToDumpProfilingInfo();
WaitForProcessesToDumpProfilingInfo(
const WaitForProcessesToDumpProfilingInfo& other) = delete;
WaitForProcessesToDumpProfilingInfo& operator=(
const WaitForProcessesToDumpProfilingInfo&) = delete;
// Wait for all the events served by |GetNewWaitableEvent| to signal.
void WaitForAll();
// Return a new waitable event. Calling |WaitForAll| will wait for this event
// to be signaled.
// The returned WaitableEvent is owned by this
// WaitForProcessesToDumpProfilingInfo instance.
base::WaitableEvent* GetNewWaitableEvent();
private:
// Implementation of WaitForAll that will run on the thread pool. This will
// run |quit_closure| once it's done waiting.
void WaitForAllOnThreadPool(base::OnceClosure quit_closure);
std::vector<std::unique_ptr<base::WaitableEvent>> events_;
};
} // namespace content
#endif // CONTENT_PUBLIC_COMMON_PROFILING_UTILS_H_
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