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// Copyright (c) 2012 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_BROWSER_PROFILER_CONTROLLER_IMPL_H_
#define CONTENT_BROWSER_PROFILER_CONTROLLER_IMPL_H_
#include "base/memory/singleton.h"
#include "base/process/process.h"
#include "content/common/content_export.h"
#include "content/public/browser/profiler_controller.h"
#include "content/public/common/process_type.h"
namespace tracked_objects {
struct ProcessDataSnapshot;
}
namespace content {
// ProfilerController's implementation.
class ProfilerControllerImpl : public ProfilerController {
public:
static ProfilerControllerImpl* GetInstance();
// Normally instantiated when the child process is launched. Only one instance
// should be created per process.
ProfilerControllerImpl();
virtual ~ProfilerControllerImpl();
// Notify the |subscriber_| that it should expect at least |pending_processes|
// additional calls to OnProfilerDataCollected(). OnPendingProcess() may be
// called repeatedly; the last call will have |end| set to true, indicating
// that there is no longer a possibility for the count of pending processes to
// increase. This is called on the UI thread.
void OnPendingProcesses(int sequence_number, int pending_processes, bool end);
// Send the |profiler_data| back to the |subscriber_|.
// This can be called from any thread.
void OnProfilerDataCollected(
int sequence_number,
const tracked_objects::ProcessDataSnapshot& profiler_data,
int process_type);
// ProfilerController implementation:
virtual void Register(ProfilerSubscriber* subscriber) OVERRIDE;
virtual void Unregister(const ProfilerSubscriber* subscriber) OVERRIDE;
virtual void GetProfilerData(int sequence_number) OVERRIDE;
private:
friend struct DefaultSingletonTraits<ProfilerControllerImpl>;
// Contact child processes and get their profiler data.
void GetProfilerDataFromChildProcesses(int sequence_number);
ProfilerSubscriber* subscriber_;
DISALLOW_COPY_AND_ASSIGN(ProfilerControllerImpl);
};
} // namespace content
#endif // CONTENT_BROWSER_PROFILER_CONTROLLER_IMPL_H_
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