/*
* Copyright (c) 2001-2002 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. The rights granted to you under the
- * License may not be used to create, or enable the creation or
- * redistribution of, unlawful or unlicensed copies of an Apple operating
- * system, or to circumvent, violate, or enable the circumvention or
- * violation of, any terms of an Apple operating system software license
- * agreement.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
*
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
* limitations under the License.
*
- * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
-
+
#include "IOPMPowerStateQueue.h"
-#include "IOKit/IOLocks.h"
-#undef super
+
#define super IOEventSource
-OSDefineMetaClassAndStructors(IOPMPowerStateQueue, IOEventSource);
+OSDefineMetaClassAndStructors( IOPMPowerStateQueue, IOEventSource )
-#ifdef __i386__ /* ppc does this right and doesn't need these routines */
-static
-void * OSDequeueAtomic(void ** inList, SInt32 inOffset)
+IOPMPowerStateQueue * IOPMPowerStateQueue::PMPowerStateQueue(
+ OSObject * inOwner, Action inAction )
{
- void * oldListHead;
- void * newListHead;
-
- do {
- oldListHead = *inList;
- if (oldListHead == NULL) {
- break;
- }
-
- newListHead = *(void **) (((char *) oldListHead) + inOffset);
- } while (! OSCompareAndSwap((UInt32)oldListHead,
- (UInt32)newListHead, (UInt32 *)inList));
- return oldListHead;
-}
+ IOPMPowerStateQueue * me = new IOPMPowerStateQueue;
-static
-void OSEnqueueAtomic(void ** inList, void * inNewLink, SInt32 inOffset)
-{
- void * oldListHead;
- void * newListHead = inNewLink;
- void ** newLinkNextPtr = (void **) (((char *) inNewLink) + inOffset);
-
- do {
- oldListHead = *inList;
- *newLinkNextPtr = oldListHead;
- } while (! OSCompareAndSwap((UInt32)oldListHead, (UInt32)newListHead,
- (UInt32 *)inList));
-}
-#endif /* __i386__ */
+ if (me && !me->init(inOwner, inAction)) {
+ me->release();
+ return NULL;
+ }
+ return me;
+}
-IOPMPowerStateQueue *IOPMPowerStateQueue::PMPowerStateQueue(OSObject *inOwner)
+bool
+IOPMPowerStateQueue::init( OSObject * inOwner, Action inAction )
{
- IOPMPowerStateQueue *me = new IOPMPowerStateQueue;
+ if (!inAction || !(super::init(inOwner, inAction))) {
+ return false;
+ }
+
+ queue_init( &queueHead );
- if(me && !me->init(inOwner, 0) )
- {
- me->release();
- return NULL;
- }
+ queueLock = IOLockAlloc();
+ if (!queueLock) {
+ return false;
+ }
- return me;
+ return true;
}
-bool IOPMPowerStateQueue::init(OSObject *owner, Action action)
+bool
+IOPMPowerStateQueue::submitPowerEvent(
+ uint32_t eventType,
+ void * arg0,
+ uint64_t arg1 )
{
- if(!(super::init(owner, (IOEventSource::Action) action))) return false;
-
- // Queue of powerstate changes
- changes = NULL;
-#ifdef __i386__
- if (!(tmpLock = IOLockAlloc())) panic("IOPMPowerStateQueue::init can't alloc lock");
-#endif
- return true;
-}
+ PowerEventEntry * entry;
+ entry = IONew(PowerEventEntry, 1);
+ if (!entry) {
+ return false;
+ }
-bool IOPMPowerStateQueue::unIdleOccurred(IOService *inTarget, unsigned long inState)
-{
- PowerChangeEntry *new_one = NULL;
-
- new_one = (PowerChangeEntry *)IOMalloc(sizeof(PowerChangeEntry));
- if(!new_one) return false;
-
- new_one->actionType = IOPMPowerStateQueue::kUnIdle;
- new_one->state = inState;
- new_one->target = inTarget;
-
- // Change to queue
-#ifdef __i386__
- IOLockLock(tmpLock);
-#endif
- OSEnqueueAtomic((void **)&changes, (void *)new_one, 0);
-#ifdef __i386__
- IOLockUnlock(tmpLock);
-#endif
- signalWorkAvailable();
-
- return true;
+ entry->eventType = eventType;
+ entry->arg0 = arg0;
+ entry->arg1 = arg1;
+
+ IOLockLock(queueLock);
+ queue_enter(&queueHead, entry, PowerEventEntry *, chain);
+ IOLockUnlock(queueLock);
+ signalWorkAvailable();
+
+ return true;
}
-// checkForWork() is called in a gated context
-bool IOPMPowerStateQueue::checkForWork()
+bool
+IOPMPowerStateQueue::checkForWork( void )
{
- PowerChangeEntry *theNode;
- int theState;
- IOService *theTarget;
- UInt16 theAction;
-
- // Dequeue and process the state change request
-#ifdef __i386__
- IOLockLock(tmpLock);
-#endif
- if((theNode = (PowerChangeEntry *)OSDequeueAtomic((void **)&changes, 0)))
- {
-#ifdef __i386__
- IOLockUnlock(tmpLock);
-#endif
- theState = theNode->state;
- theTarget = theNode->target;
- theAction = theNode->actionType;
- IOFree((void *)theNode, sizeof(PowerChangeEntry));
-
- switch (theAction)
- {
- case kUnIdle:
- theTarget->command_received((void *)theState, 0, 0, 0);
- break;
- }
- }
-#ifdef __i386__
- else {
- IOLockUnlock(tmpLock);
- }
-#endif
- // Return true if there's more work to be done
- if(changes) return true;
- else return false;
+ IOPMPowerStateQueueAction queueAction = (IOPMPowerStateQueueAction) action;
+ PowerEventEntry * entry;
+
+ IOLockLock(queueLock);
+ while (!queue_empty(&queueHead)) {
+ queue_remove_first(&queueHead, entry, PowerEventEntry *, chain);
+ IOLockUnlock(queueLock);
+
+ (*queueAction)(owner, entry->eventType, entry->arg0, entry->arg1);
+ IODelete(entry, PowerEventEntry, 1);
+
+ IOLockLock(queueLock);
+ }
+ IOLockUnlock(queueLock);
+
+ return false;
}
projects / apple / xnu.git / blobdiff