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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.
#ifndef BASE_POWER_MONITOR_IOPM_POWER_SOURCE_SAMPLING_EVENT_SOURCE_H_
#define BASE_POWER_MONITOR_IOPM_POWER_SOURCE_SAMPLING_EVENT_SOURCE_H_
#include "base/base_export.h"
#include "base/functional/callback.h"
#include "base/mac/scoped_ionotificationportref.h"
#include "base/mac/scoped_ioobject.h"
#include "base/power_monitor/sampling_event_source.h"
namespace base {
// Generates a sampling event when a state change notification is dispatched by
// the IOPMPowerSource service.
class BASE_EXPORT IOPMPowerSourceSamplingEventSource
: public SamplingEventSource {
public:
IOPMPowerSourceSamplingEventSource();
~IOPMPowerSourceSamplingEventSource() override;
// SamplingEventSource:
bool Start(SamplingEventCallback callback) override;
TimeDelta GetSampleInterval() override;
private:
static void OnNotification(void* context,
io_service_t service,
natural_t message_type,
void* message_argument);
mac::ScopedIONotificationPortRef notify_port_;
mac::ScopedIOObject<io_service_t> service_;
mac::ScopedIOObject<io_object_t> notification_;
SamplingEventCallback callback_;
};
} // namespace base
#endif // BASE_POWER_MONITOR_IOPM_POWER_SOURCE_SAMPLING_EVENT_SOURCE_H_
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