/*
- * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1998-2000, 2009 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
+ * @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
+ * 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_LICENSE_OSREFERENCE_HEADER_END@
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
Copyright (c) 1998 Apple Computer, Inc. All rights reserved.
#define super OSObject
OSDefineMetaClassAndAbstractStructors(IOEventSource, OSObject)
+
OSMetaClassDefineReservedUnused(IOEventSource, 0);
OSMetaClassDefineReservedUnused(IOEventSource, 1);
OSMetaClassDefineReservedUnused(IOEventSource, 2);
OSMetaClassDefineReservedUnused(IOEventSource, 6);
OSMetaClassDefineReservedUnused(IOEventSource, 7);
+bool IOEventSource::checkForWork() { return false; }
+
/* inline function implementations */
-void IOEventSource::signalWorkAvailable() { workLoop->signalWorkAvailable(); }
-void IOEventSource::openGate() { workLoop->openGate(); }
-void IOEventSource::closeGate() { workLoop->closeGate(); }
-bool IOEventSource::tryCloseGate() { return workLoop->tryCloseGate(); }
+
+#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)
- { return workLoop->sleepGate(event, type); }
-void IOEventSource::wakeupGate(void *event, bool oneThread)
- { workLoop->wakeupGate(event, oneThread); }
+{
+ 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)
(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)
projects / apple / xnu.git / blobdiff