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--- xnu/xnu-792.2.4/iokit/Kernel/IOTimerEventSource.cpp
+++ xnu/xnu-2050.9.2/iokit/Kernel/IOTimerEventSource.cpp
@@ -1,34 +1,29 @@
/*
- * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1998-2000, 2009-2010 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_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 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.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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.
+ * 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_HEADER_END@
- */
-/*
- * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
- *
- * IOTimerEventSource.cpp
- *
- * HISTORY
- * 2-Feb-1999 Joe Liu (jliu) created.
- * 1999-10-14 Godfrey van der Linden(gvdl)
- * Revamped to use thread_call APIs
- *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#include <sys/cdefs.h>
@@ -45,6 +40,7 @@
#include <IOKit/IOWorkLoop.h>
#include <IOKit/IOTimeStamp.h>
+#include <IOKit/IOKitDebug.h>
#define super IOEventSource
OSDefineMetaClassAndStructors(IOTimerEventSource, IOEventSource)
@@ -57,19 +53,50 @@
OSMetaClassDefineReservedUnused(IOTimerEventSource, 6);
OSMetaClassDefineReservedUnused(IOTimerEventSource, 7);
+#if IOKITSTATS
+
+#define IOStatisticsInitializeCounter() \
+do { \
+ IOStatistics::setCounterType(IOEventSource::reserved->counter, kIOStatisticsTimerEventSourceCounter); \
+} while (0)
+
+#define IOStatisticsOpenGate() \
+do { \
+ IOStatistics::countOpenGate(me->IOEventSource::reserved->counter); \
+} while (0)
+
+#define IOStatisticsCloseGate() \
+do { \
+ IOStatistics::countCloseGate(me->IOEventSource::reserved->counter); \
+} while (0)
+
+#define IOStatisticsTimeout() \
+do { \
+ IOStatistics::countTimerTimeout(me->IOEventSource::reserved->counter); \
+} while (0)
+
+#else
+
+#define IOStatisticsInitializeCounter()
+#define IOStatisticsOpenGate()
+#define IOStatisticsCloseGate()
+#define IOStatisticsTimeout()
+
+#endif /* IOKITSTATS */
+
//
// reserved != 0 means IOTimerEventSource::timeoutAndRelease is being used,
// not a subclassed implementation.
//
-bool IOTimerEventSource::checkForWork() { return false; }
-
// Timeout handler function. This function is called by the kernel when
// the timeout interval expires.
//
void IOTimerEventSource::timeout(void *self)
{
IOTimerEventSource *me = (IOTimerEventSource *) self;
+
+ IOStatisticsTimeout();
if (me->enabled && me->action)
{
@@ -79,22 +106,37 @@
{
Action doit;
wl->closeGate();
+ IOStatisticsCloseGate();
doit = (Action) me->action;
if (doit && me->enabled && AbsoluteTime_to_scalar(&me->abstime))
{
- IOTimeStampConstant(IODBG_TIMES(IOTIMES_ACTION),
- (unsigned int) doit, (unsigned int) me->owner);
+ bool trace = (gIOKitTrace & kIOTraceTimers) ? true : false;
+
+ if (trace)
+ IOTimeStampStartConstant(IODBG_TIMES(IOTIMES_ACTION),
+ (uintptr_t) doit, (uintptr_t) me->owner);
+
(*doit)(me->owner, me);
+
+ if (trace)
+ IOTimeStampEndConstant(IODBG_TIMES(IOTIMES_ACTION),
+ (uintptr_t) doit, (uintptr_t) me->owner);
}
+ IOStatisticsOpenGate();
wl->openGate();
}
}
}
-void IOTimerEventSource::timeoutAndRelease(void * self, void * count)
+void IOTimerEventSource::timeoutAndRelease(void * self, void * c)
{
IOTimerEventSource *me = (IOTimerEventSource *) self;
-
+ /* The second parameter (a pointer) gets abused to carry an SInt32, so on LP64, "count"
+ must be cast to "long" before, in order to tell GCC we're not truncating a pointer. */
+ SInt32 count = (SInt32) (long) c;
+
+ IOStatisticsTimeout();
+
if (me->enabled && me->action)
{
IOWorkLoop *
@@ -103,13 +145,23 @@
{
Action doit;
wl->closeGate();
+ IOStatisticsCloseGate();
doit = (Action) me->action;
- if (doit && (me->reserved->calloutGeneration == (SInt32) count))
+ if (doit && (me->reserved->calloutGeneration == count))
{
- IOTimeStampConstant(IODBG_TIMES(IOTIMES_ACTION),
- (unsigned int) doit, (unsigned int) me->owner);
+ bool trace = (gIOKitTrace & kIOTraceTimers) ? true : false;
+
+ if (trace)
+ IOTimeStampStartConstant(IODBG_TIMES(IOTIMES_ACTION),
+ (uintptr_t) doit, (uintptr_t) me->owner);
+
(*doit)(me->owner, me);
+
+ if (trace)
+ IOTimeStampEndConstant(IODBG_TIMES(IOTIMES_ACTION),
+ (uintptr_t) doit, (uintptr_t) me->owner);
}
+ IOStatisticsOpenGate();
wl->openGate();
}
}
@@ -136,6 +188,8 @@
if (!calloutEntry)
return false;
+ IOStatisticsInitializeCounter();
+
return true;
}
@@ -216,11 +270,12 @@
IOReturn IOTimerEventSource::setTimeout(UInt32 interval, UInt32 scale_factor)
{
AbsoluteTime end;
-
+
clock_interval_to_deadline(interval, scale_factor, &end);
return wakeAtTime(end);
}
+#if !defined(__LP64__)
IOReturn IOTimerEventSource::setTimeout(mach_timespec_t interval)
{
AbsoluteTime end, nsecs;
@@ -233,6 +288,7 @@
return wakeAtTime(end);
}
+#endif
IOReturn IOTimerEventSource::setTimeout(AbsoluteTime interval)
{
@@ -267,6 +323,7 @@
return wakeAtTime(end);
}
+#if !defined(__LP64__)
IOReturn IOTimerEventSource::wakeAtTime(mach_timespec_t inAbstime)
{
AbsoluteTime end, nsecs;
@@ -279,6 +336,7 @@
return wakeAtTime(end);
}
+#endif
void IOTimerEventSource::setWorkLoop(IOWorkLoop *inWorkLoop)
{
@@ -293,7 +351,7 @@
return kIOReturnNoResources;
abstime = inAbstime;
- if ( enabled && AbsoluteTime_to_scalar(&abstime) && workLoop )
+ if ( enabled && AbsoluteTime_to_scalar(&inAbstime) && AbsoluteTime_to_scalar(&abstime) && workLoop )
{
if (reserved)
{
@@ -302,14 +360,14 @@
reserved->workLoop = workLoop;
reserved->calloutGeneration++;
if (thread_call_enter1_delayed((thread_call_t) calloutEntry,
- (void *) reserved->calloutGeneration, abstime))
+ (void *) reserved->calloutGeneration, inAbstime))
{
release();
workLoop->release();
}
}
else
- thread_call_enter_delayed((thread_call_t) calloutEntry, abstime);
+ thread_call_enter_delayed((thread_call_t) calloutEntry, inAbstime);
}
return kIOReturnSuccess;