/*
- * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1998-2000, 2009 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * @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 OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
+ * 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.
-]*/
+ * 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
OSDefineMetaClassAndAbstractStructors(IOEventSource, OSObject)
+
OSMetaClassDefineReservedUnused(IOEventSource, 0);
OSMetaClassDefineReservedUnused(IOEventSource, 1);
OSMetaClassDefineReservedUnused(IOEventSource, 2);
OSMetaClassDefineReservedUnused(IOEventSource, 6);
OSMetaClassDefineReservedUnused(IOEventSource, 7);
-bool IOEventSource::init(OSObject *inOwner,
- Action inAction = 0)
+bool
+IOEventSource::checkForWork()
+{
+ return false;
+}
+
+/* inline function implementations */
+
+#if IOKITSTATS
+
+#define IOStatisticsRegisterCounter() \
+do { \
+ reserved->counter = IOStatistics::registerEventSource(inOwner); \
+} while (0)
+
+#define IOStatisticsUnregisterCounter() \
+do { \
+ if (reserved) \
+ IOStatistics::unregisterEventSource(reserved->counter); \
+} while (0)
+
+#define IOStatisticsOpenGate() \
+do { \
+ IOStatistics::countOpenGate(reserved->counter); \
+} while (0)
+
+#define IOStatisticsCloseGate() \
+do { \
+ IOStatistics::countCloseGate(reserved->counter); \
+} while (0)
+
+#else
+
+#define IOStatisticsRegisterCounter()
+#define IOStatisticsUnregisterCounter()
+#define IOStatisticsOpenGate()
+#define IOStatisticsCloseGate()
+
+#endif /* IOKITSTATS */
+
+void
+IOEventSource::signalWorkAvailable()
+{
+ workLoop->signalWorkAvailable();
+}
+
+void
+IOEventSource::openGate()
+{
+ IOStatisticsOpenGate();
+ workLoop->openGate();
+}
+
+void
+IOEventSource::closeGate()
+{
+ workLoop->closeGate();
+ IOStatisticsCloseGate();
+}
+
+bool
+IOEventSource::tryCloseGate()
+{
+ bool res;
+ if ((res = workLoop->tryCloseGate())) {
+ 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();
+ 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 = IONew(ExpansionData, 1);
+ if (!reserved) {
+ return false;
+ }
+ }
+
+ IOStatisticsRegisterCounter();
+
+ return true;
+}
+
+void
+IOEventSource::free( void )
{
- if (!inOwner)
- return false;
+ IOStatisticsUnregisterCounter();
+
+ if ((kActionBlock & flags) && actionBlock) {
+ Block_release(actionBlock);
+ }
+
+ if (reserved) {
+ IODelete(reserved, ExpansionData, 1);
+ }
- owner = inOwner;
+ super::free();
+}
+
+void
+IOEventSource::setRefcon(void *newrefcon)
+{
+ refcon = newrefcon;
+}
- if ( !super::init() )
- return false;
+void *
+IOEventSource::getRefcon() const
+{
+ return refcon;
+}
- (void) setAction(inAction);
- enabled = true;
+IOEventSource::Action
+IOEventSource::getAction() const
+{
+ if (kActionBlock & flags) {
+ return NULL;
+ }
+ return action;
+}
- return true;
+IOEventSource::ActionBlock
+IOEventSource::getActionBlock(ActionBlock) const
+{
+ if (kActionBlock & flags) {
+ return actionBlock;
+ }
+ return NULL;
}
-IOEventSource::Action IOEventSource::getAction () const { return action; };
+void
+IOEventSource::setAction(Action inAction)
+{
+ if ((kActionBlock & flags) && actionBlock) {
+ Block_release(actionBlock);
+ }
+ action = inAction;
+}
-void IOEventSource::setAction(Action inAction)
+void
+IOEventSource::setActionBlock(ActionBlock block)
{
- action = inAction;
+ if ((kActionBlock & flags) && actionBlock) {
+ Block_release(actionBlock);
+ }
+ actionBlock = Block_copy(block);
+ flags |= kActionBlock;
}
-IOEventSource *IOEventSource::getNext() const { return eventChainNext; };
+IOEventSource *
+IOEventSource::getNext() const
+{
+ return eventChainNext;
+};
-void IOEventSource::setNext(IOEventSource *inNext)
+void
+IOEventSource::setNext(IOEventSource *inNext)
{
- eventChainNext = inNext;
+ eventChainNext = inNext;
}
-void IOEventSource::enable()
+void
+IOEventSource::enable()
{
- enabled = true;
- if (workLoop)
- return signalWorkAvailable();
+ enabled = true;
+ if (workLoop) {
+ return signalWorkAvailable();
+ }
}
-void IOEventSource::disable()
+void
+IOEventSource::disable()
{
- enabled = false;
+ enabled = false;
}
-bool IOEventSource::isEnabled() const
+bool
+IOEventSource::isEnabled() const
{
- return enabled;
+ return enabled;
}
-void IOEventSource::setWorkLoop(IOWorkLoop *inWorkLoop)
+void
+IOEventSource::setWorkLoop(IOWorkLoop *inWorkLoop)
{
- if ( !inWorkLoop )
- disable();
- workLoop = inWorkLoop;
+ if (!inWorkLoop) {
+ disable();
+ }
+ workLoop = inWorkLoop;
}
-IOWorkLoop *IOEventSource::getWorkLoop() const
+IOWorkLoop *
+IOEventSource::getWorkLoop() const
{
- return workLoop;
+ return workLoop;
}
-bool IOEventSource::onThread() const
+bool
+IOEventSource::onThread() const
{
- return (workLoop != 0) && workLoop->onThread();
+ return (workLoop != NULL) && workLoop->onThread();
}
projects / apple / xnu.git / blobdiff