--- xnu/xnu-12377.101.15/iokit/Kernel/IOEventSource.cpp
+++ xnu/xnu-2050.18.24/iokit/Kernel/IOEventSource.cpp
@@ -2,7 +2,7 @@
  * Copyright (c) 1998-2000, 2009 Apple 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
@@ -11,10 +11,10 @@
  * 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,
@@ -22,24 +22,20 @@
  * 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@
  */
 /*
- *  Copyright (c) 1998 Apple Computer, Inc.  All rights reserved.
- *
- *  HISTORY
- *   1998-7-13	Godfrey van der Linden(gvdl)
- *       Created.
- *  ]*/
-
-#define IOKIT_ENABLE_SHARED_PTR
-
+Copyright (c) 1998 Apple Computer, Inc.  All rights reserved.
+
+HISTORY
+    1998-7-13	Godfrey van der Linden(gvdl)
+        Created.
+]*/
 #include <IOKit/IOLib.h>
 
 #include <IOKit/IOEventSource.h>
 #include <IOKit/IOWorkLoop.h>
-#include <libkern/Block.h>
 
 #define super OSObject
 
@@ -54,11 +50,7 @@
 OSMetaClassDefineReservedUnused(IOEventSource, 6);
 OSMetaClassDefineReservedUnused(IOEventSource, 7);
 
-bool
-IOEventSource::checkForWork()
-{
-	return false;
-}
+bool IOEventSource::checkForWork() { return false; }
 
 /* inline function implementations */
 
@@ -72,7 +64,7 @@
 #define IOStatisticsUnregisterCounter() \
 do { \
 	if (reserved) \
-	        IOStatistics::unregisterEventSource(reserved->counter); \
+		IOStatistics::unregisterEventSource(reserved->counter); \
 } while (0)
 
 #define IOStatisticsOpenGate() \
@@ -94,205 +86,133 @@
 
 #endif /* IOKITSTATS */
 
-void
-IOEventSource::signalWorkAvailable()
-{
-	workLoop->signalWorkAvailable();
-}
-
-void
-IOEventSource::openGate()
-{
+void IOEventSource::signalWorkAvailable() 
+{ 
+	workLoop->signalWorkAvailable(); 
+}
+
+void IOEventSource::openGate() 
+{ 
 	IOStatisticsOpenGate();
-	workLoop->openGate();
-}
-
-void
-IOEventSource::closeGate()
-{
-	workLoop->closeGate();
-	IOStatisticsCloseGate();
-}
-
-bool
-IOEventSource::tryCloseGate()
-{
-	bool res;
+	workLoop->openGate(); 
+}
+
+void IOEventSource::closeGate()	
+{ 
+	workLoop->closeGate(); 
+	IOStatisticsCloseGate(); 
+}
+
+bool IOEventSource::tryCloseGate() 
+{ 
+	bool res; 
 	if ((res = workLoop->tryCloseGate())) {
-		IOStatisticsCloseGate();
+		IOStatisticsCloseGate(); 
 	}
-	return res;
-}
-
-int
-IOEventSource::sleepGate(void *event, UInt32 type)
-{
-	int res;
-	IOStatisticsOpenGate();
-	res = workLoop->sleepGate(event, type);
-	IOStatisticsCloseGate();
-	return res;
-}
-
-int
-IOEventSource::sleepGate(void *event, AbsoluteTime deadline, UInt32 type)
-{
-	int res;
-	IOStatisticsOpenGate();
+	return res; 
+}
+
+int IOEventSource::sleepGate(void *event, UInt32 type)
+{ 
+	bool res; 
+	IOStatisticsOpenGate(); 
+	res = workLoop->sleepGate(event, type); 
+	IOStatisticsCloseGate(); 
+	return res; 
+}
+
+int IOEventSource::sleepGate(void *event, AbsoluteTime deadline, UInt32 type)
+{ 
+	bool res; 
+	IOStatisticsOpenGate(); 
 	res = workLoop->sleepGate(event, deadline, type);
-	IOStatisticsCloseGate();
-	return res;
-}
-
-void
-IOEventSource::wakeupGate(void *event, bool oneThread)
-{
-	workLoop->wakeupGate(event, oneThread);
-}
-
-
-bool
-IOEventSource::init(OSObject *inOwner,
-    Action inAction)
-{
-	if (!inOwner) {
-		return false;
-	}
-
-	owner = inOwner;
-
-	if (!super::init()) {
-		return false;
-	}
-
-	(void) setAction(inAction);
-	enabled = true;
-
-	if (!reserved) {
-		reserved = IOMallocType(ExpansionData);
-	}
-
-	IOStatisticsRegisterCounter();
-
-	return true;
-}
-
-void
-IOEventSource::free( void )
-{
-	IOStatisticsUnregisterCounter();
-
-	if ((kActionBlock & flags) && actionBlock) {
-		Block_release(actionBlock);
-	}
-
-	if (reserved) {
-		IOFreeType(reserved, ExpansionData);
-	}
-
-	super::free();
-}
-
-void
-IOEventSource::setRefcon(void *newrefcon)
-{
-	refcon = newrefcon;
-}
-
-void *
-IOEventSource::getRefcon() const
-{
-	return refcon;
-}
-
-IOEventSource::Action
-IOEventSource::getAction() const
-{
-	if (kActionBlock & flags) {
-		return NULL;
-	}
-	return action;
-}
-
-IOEventSource::ActionBlock
-IOEventSource::getActionBlock(ActionBlock) const
-{
-	if (kActionBlock & flags) {
-		return actionBlock;
-	}
-	return NULL;
-}
-
-void
-IOEventSource::setAction(Action inAction)
-{
-	if ((kActionBlock & flags) && actionBlock) {
-		Block_release(actionBlock);
-	}
-	action = inAction;
-	flags &= ~kActionBlock;
-}
-
-void
-IOEventSource::setActionBlock(ActionBlock block)
-{
-	if ((kActionBlock & flags) && actionBlock) {
-		Block_release(actionBlock);
-	}
-	actionBlock = Block_copy(block);
-	flags |= kActionBlock;
-}
-
-IOEventSource *
-IOEventSource::getNext() const
-{
-	return eventChainNext;
-};
-
-void
-IOEventSource::setNext(IOEventSource *inNext)
-{
-	eventChainNext = inNext;
-}
-
-void
-IOEventSource::enable()
-{
-	enabled = true;
-	if (workLoop) {
-		return signalWorkAvailable();
-	}
-}
-
-void
-IOEventSource::disable()
-{
-	enabled = false;
-}
-
-bool
-IOEventSource::isEnabled() const
-{
-	return enabled;
-}
-
-void
-IOEventSource::setWorkLoop(IOWorkLoop *inWorkLoop)
-{
-	if (!inWorkLoop) {
-		disable();
-	}
-	workLoop = inWorkLoop;
-}
-
-IOWorkLoop *
-IOEventSource::getWorkLoop() const
-{
-	return workLoop;
-}
-
-bool
-IOEventSource::onThread() const
-{
-	return (workLoop != NULL) && workLoop->onThread();
-}
+	IOStatisticsCloseGate(); 
+	return res; 
+}
+  
+void IOEventSource::wakeupGate(void *event, bool oneThread) { workLoop->wakeupGate(event, oneThread); }
+
+
+bool IOEventSource::init(OSObject *inOwner,
+                         Action inAction)
+{
+    if (!inOwner)
+        return false;
+
+    owner = inOwner;
+
+    if ( !super::init() )
+        return false;
+
+    (void) setAction(inAction);
+    enabled = true;
+
+    if(!reserved) {
+        reserved = IONew(ExpansionData, 1);
+        if (!reserved) {
+            return false;
+        }
+    }
+
+    IOStatisticsRegisterCounter();
+		
+    return true;
+}
+
+void IOEventSource::free( void )
+{
+    IOStatisticsUnregisterCounter();
+	
+    if (reserved)
+		IODelete(reserved, ExpansionData, 1);
+
+    super::free();
+}
+
+IOEventSource::Action IOEventSource::getAction () const { return action; };
+
+void IOEventSource::setAction(Action inAction)
+{
+    action = inAction;
+}
+
+IOEventSource *IOEventSource::getNext() const { return eventChainNext; };
+
+void IOEventSource::setNext(IOEventSource *inNext)
+{
+    eventChainNext = inNext;
+}
+
+void IOEventSource::enable()
+{
+    enabled = true;
+    if (workLoop)
+        return signalWorkAvailable();
+}
+
+void IOEventSource::disable()
+{
+    enabled = false;
+}
+
+bool IOEventSource::isEnabled() const
+{
+    return enabled;
+}
+
+void IOEventSource::setWorkLoop(IOWorkLoop *inWorkLoop)
+{
+    if ( !inWorkLoop )
+        disable();
+    workLoop = inWorkLoop;
+}
+
+IOWorkLoop *IOEventSource::getWorkLoop() const
+{
+    return workLoop;
+}
+
+bool IOEventSource::onThread() const
+{
+    return (workLoop != 0) && workLoop->onThread();
+}