blob: 1ebf69ac6fea734baacb68d9b2eb39fe15d2f7e4 [file] [log] [blame]
/*
* Copyright (C) 2017 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#import "config.h"
#if HAVE(APPLE_LOW_POWER_MODE_SUPPORT)
#import "LowPowerModeNotifier.h"
#import "Logging.h"
#import <Foundation/NSProcessInfo.h>
#import <wtf/MainThread.h>
@interface WebLowPowerModeObserver : NSObject
@property (nonatomic) WebCore::LowPowerModeNotifier* notifier;
@property (nonatomic, readonly) BOOL isLowPowerModeEnabled;
@end
@implementation WebLowPowerModeObserver {
}
- (WebLowPowerModeObserver *)initWithNotifier:(WebCore::LowPowerModeNotifier&)notifier
{
self = [super init];
if (!self)
return nil;
_notifier = &notifier;
_isLowPowerModeEnabled = [NSProcessInfo processInfo].lowPowerModeEnabled;
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_didReceiveLowPowerModeChange) name:NSProcessInfoPowerStateDidChangeNotification object:nil];
return self;
}
- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self name:NSProcessInfoPowerStateDidChangeNotification object:nil];
[super dealloc];
}
- (void)_didReceiveLowPowerModeChange
{
_isLowPowerModeEnabled = [NSProcessInfo processInfo].lowPowerModeEnabled;
// We need to make sure we notify the client on the main thread.
callOnMainThread([self, protectedSelf = RetainPtr<WebLowPowerModeObserver>(self)] {
if (_notifier)
notifyLowPowerModeChanged(*_notifier, _isLowPowerModeEnabled);
});
}
@end
namespace WebCore {
LowPowerModeNotifier::LowPowerModeNotifier(LowPowerModeChangeCallback&& callback)
: m_observer(adoptNS([[WebLowPowerModeObserver alloc] initWithNotifier:*this]))
, m_callback(WTFMove(callback))
{
}
LowPowerModeNotifier::~LowPowerModeNotifier()
{
m_observer.get().notifier = nil;
}
bool LowPowerModeNotifier::isLowPowerModeEnabled() const
{
return m_observer.get().isLowPowerModeEnabled;
}
void LowPowerModeNotifier::notifyLowPowerModeChanged(bool enabled)
{
m_callback(enabled);
}
void notifyLowPowerModeChanged(LowPowerModeNotifier& notifier, bool enabled)
{
RELEASE_LOG(PerformanceLogging, "Low power mode state has changed to %d", enabled);
notifier.notifyLowPowerModeChanged(enabled);
}
} // namespace WebCore
#endif // PLATFORM(APPLE_LOW_POWER_MODE_SUPPORT)