xnu-792.21.3.tar.gz

[apple/xnu.git] / iokit / Kernel / IOPMWorkArbiter.cpp

diff --git a/iokit/Kernel/IOPMWorkArbiter.cpp b/iokit/Kernel/IOPMWorkArbiter.cpp
deleted file mode 100644 (file)
index 44c9842..0000000
--- a/iokit/Kernel/IOPMWorkArbiter.cpp
+++ /dev/null
@@ -1,159 +0,0 @@
-/*
- * Copyright (c) 2001-2002 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_OSREFERENCE_LICENSE_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.
- * 
- * 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_OSREFERENCE_LICENSE_HEADER_END@
- */
- 
-#include "IOPMWorkArbiter.h"
-#include "IOKit/IOLocks.h"
-#undef super
-#define super IOEventSource
-OSDefineMetaClassAndStructors(IOPMWorkArbiter, IOEventSource);
-
-/*************************************************************************/
-static
-void *    _dequeue(void ** inList, SInt32 inOffset)
-{
-    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;
-}
-
-/*************************************************************************/
-static
-void    _enqueue(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));
-}
-
-/*************************************************************************/
-IOPMWorkArbiter *IOPMWorkArbiter::pmWorkArbiter(
-    IOPMrootDomain *inOwner)
-{
-    IOPMWorkArbiter     *me = new IOPMWorkArbiter;
-
-    if(me && !me->init((OSObject *)inOwner, 0) )
-    {
-        me->release();
-        return NULL;
-    }
-
-    return me;
-}
-
-/*************************************************************************/
-bool IOPMWorkArbiter::init(OSObject *owner, Action action)
-{
-    if(!(super::init(owner, (IOEventSource::Action) action))) 
-        return false;
-        
-    events = NULL;
-    fRootDomain = (IOPMrootDomain *)owner;
-    
-    if (!(tmpLock = IOLockAlloc())) {
-        panic("IOPMWorkArbiter::init can't alloc lock");
-    }
-    return true;
-}
-
-
-/*************************************************************************/
-bool IOPMWorkArbiter::clamshellStateChangeOccurred(uint32_t messageValue)
-{
-    PMEventEntry                 *new_one = NULL;
-
-    new_one = (PMEventEntry *)IOMalloc(sizeof(PMEventEntry));
-    if(!new_one) return false;
-    
-    new_one->actionType = IOPMWorkArbiter::kRootDomainClamshellChanged;
-    new_one->target = (IOService *)fRootDomain;
-    new_one->intArgument = messageValue;
-       new_one->target->retain();
-    
-    IOLockLock(tmpLock);
-    _enqueue((void **)&events, (void *)new_one, 0);
-    IOLockUnlock(tmpLock);
-    signalWorkAvailable();
-
-    return true;
-}
-
-
-/*************************************************************************/
-// checkForWork() is called in a gated context
-bool IOPMWorkArbiter::checkForWork()
-{
-    PMEventEntry                *theNode;
-    IOService                   *theTarget;
-    UInt16                      theAction;
-    
-    // Dequeue and process the state change request
-    IOLockLock(tmpLock);
-    if((theNode = (PMEventEntry *)_dequeue((void **)&events, 0)))
-    {
-      IOLockUnlock(tmpLock);
-        theTarget = theNode->target;
-        theAction = theNode->actionType;
-
-        switch (theAction)
-        {
-            case kRootDomainClamshellChanged:
-                theTarget->messageClients(
-                                kIOPMMessageClamshellStateChange, 
-                                (void *)theNode->intArgument);
-                break;
-        }
-
-               if (theTarget)
-                       theTarget->release();
-        IOFree((void *)theNode, sizeof(PMEventEntry));
-    }
-    else {
-      IOLockUnlock(tmpLock);
-    }
-    // Return true if there's more work to be done
-    if(events) return true;
-    else return false;
-}
-
-