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/*
* Copyright (C) 2006, 2010 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 COMPUTER, INC. ``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 COMPUTER, INC. OR
* 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"
#import "SharedTimer.h"
#import <IOKit/IOMessage.h>
#import <IOKit/pwr_mgt/IOPMLib.h>
#import <wtf/Assertions.h>
#import <wtf/Noncopyable.h>
#import <wtf/PassOwnPtr.h>
#import <wtf/UnusedParam.h>
#include <stdio.h>
// On Snow Leopard and newer we'll ask IOKit to deliver notifications on a queue.
#ifdef BUILDING_ON_LEOPARD
#define IOKIT_WITHOUT_LIBDISPATCH 1
#endif
namespace WebCore {
static CFRunLoopTimerRef sharedTimer;
static void (*sharedTimerFiredFunction)();
static void timerFired(CFRunLoopTimerRef, void*);
#if !defined(IOKIT_WITHOUT_LIBDISPATCH) && defined(BUILDING_ON_SNOW_LEOPARD)
extern "C" void IONotificationPortSetDispatchQueue(IONotificationPortRef notify, dispatch_queue_t queue);
#endif
class PowerObserver {
WTF_MAKE_NONCOPYABLE(PowerObserver);
public:
static PassOwnPtr<PowerObserver> create()
{
return adoptPtr(new PowerObserver);
}
~PowerObserver();
private:
PowerObserver();
static void didReceiveSystemPowerNotification(void* context, io_service_t, uint32_t messageType, void* messageArgument);
void didReceiveSystemPowerNotification(io_service_t, uint32_t messageType, void* messageArgument);
void restartSharedTimer();
io_connect_t m_powerConnection;
IONotificationPortRef m_notificationPort;
io_object_t m_notifierReference;
#ifdef IOKIT_WITHOUT_LIBDISPATCH
CFRunLoopSourceRef m_runLoopSource;
#else
dispatch_queue_t m_dispatchQueue;
#endif
};
PowerObserver::PowerObserver()
: m_powerConnection(0)
, m_notificationPort(0)
, m_notifierReference(0)
#ifdef IOKIT_WITHOUT_LIBDISPATCH
, m_runLoopSource(0)
#else
, m_dispatchQueue(dispatch_queue_create("com.apple.WebKit.PowerObserver", 0))
#endif
{
m_powerConnection = IORegisterForSystemPower(this, &m_notificationPort, didReceiveSystemPowerNotification, &m_notifierReference);
if (!m_powerConnection)
return;
#ifdef IOKIT_WITHOUT_LIBDISPATCH
m_runLoopSource = IONotificationPortGetRunLoopSource(m_notificationPort);
CFRunLoopAddSource(CFRunLoopGetMain(), m_runLoopSource, kCFRunLoopCommonModes);
#else
IONotificationPortSetDispatchQueue(m_notificationPort, m_dispatchQueue);
#endif
}
PowerObserver::~PowerObserver()
{
if (!m_powerConnection)
return;
#ifdef IOKIT_WITHOUT_LIBDISPATCH
CFRunLoopRemoveSource(CFRunLoopGetMain(), m_runLoopSource, kCFRunLoopCommonModes);
#else
dispatch_release(m_dispatchQueue);
#endif
IODeregisterForSystemPower(&m_notifierReference);
IOServiceClose(m_powerConnection);
IONotificationPortDestroy(m_notificationPort);
}
void PowerObserver::didReceiveSystemPowerNotification(void* context, io_service_t service, uint32_t messageType, void* messageArgument)
{
static_cast<PowerObserver*>(context)->didReceiveSystemPowerNotification(service, messageType, messageArgument);
}
void PowerObserver::didReceiveSystemPowerNotification(io_service_t, uint32_t messageType, void* messageArgument)
{
IOAllowPowerChange(m_powerConnection, reinterpret_cast<long>(messageArgument));
// We only care about the "wake from sleep" message.
if (messageType != kIOMessageSystemWillPowerOn)
return;
#ifdef IOKIT_WITHOUT_LIBDISPATCH
restartSharedTimer();
#else
// We need to restart the timer on the main thread.
CFRunLoopPerformBlock(CFRunLoopGetMain(), kCFRunLoopCommonModes, ^() {
restartSharedTimer();
});
#endif
}
void PowerObserver::restartSharedTimer()
{
ASSERT(CFRunLoopGetCurrent() == CFRunLoopGetMain());
if (!sharedTimer)
return;
stopSharedTimer();
timerFired(0, 0);
}
static PowerObserver* PowerObserver;
void setSharedTimerFiredFunction(void (*f)())
{
ASSERT(!sharedTimerFiredFunction || sharedTimerFiredFunction == f);
sharedTimerFiredFunction = f;
}
static void timerFired(CFRunLoopTimerRef, void*)
{
// FIXME: We can remove this global catch-all if we fix <rdar://problem/5299018>.
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
sharedTimerFiredFunction();
[pool drain];
}
void setSharedTimerFireTime(double fireTime)
{
ASSERT(sharedTimerFiredFunction);
if (sharedTimer) {
CFRunLoopTimerInvalidate(sharedTimer);
CFRelease(sharedTimer);
}
CFAbsoluteTime fireDate = fireTime - kCFAbsoluteTimeIntervalSince1970;
sharedTimer = CFRunLoopTimerCreate(0, fireDate, 0, 0, 0, timerFired, 0);
CFRunLoopAddTimer(CFRunLoopGetCurrent(), sharedTimer, kCFRunLoopCommonModes);
if (!PowerObserver)
PowerObserver = PowerObserver::create().leakPtr();
}
void stopSharedTimer()
{
if (sharedTimer) {
CFRunLoopTimerInvalidate(sharedTimer);
CFRelease(sharedTimer);
sharedTimer = 0;
}
}
} // namespace WebCore
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