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- // Copyright 2021 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 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/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;
- 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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