X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/8ad349bb6ed4a0be06e34c92be0d98b92e078db4..7ee9d059c4eecf68ae4f8b0fb99ae2471eda79af:/iokit/Kernel/IOEventSource.cpp

diff --git a/iokit/Kernel/IOEventSource.cpp b/iokit/Kernel/IOEventSource.cpp
index 464c89d62..95046dacd 100644
--- a/iokit/Kernel/IOEventSource.cpp
+++ b/iokit/Kernel/IOEventSource.cpp
@@ -1,31 +1,29 @@
 /*
- * 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.
@@ -42,6 +40,7 @@ HISTORY
 #define super OSObject
 
 OSDefineMetaClassAndAbstractStructors(IOEventSource, OSObject)
+
 OSMetaClassDefineReservedUnused(IOEventSource, 0);
 OSMetaClassDefineReservedUnused(IOEventSource, 1);
 OSMetaClassDefineReservedUnused(IOEventSource, 2);
@@ -51,15 +50,88 @@ OSMetaClassDefineReservedUnused(IOEventSource, 5);
 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)
@@ -75,9 +147,28 @@ bool IOEventSource::init(OSObject *inOwner,
     (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)