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--- xnu/xnu-12377.101.15/iokit/Kernel/IOTimerEventSource.cpp
+++ xnu/xnu-792.13.8/iokit/Kernel/IOTimerEventSource.cpp
@@ -1,32 +1,44 @@
/*
- * Copyright (c) 1998-2000, 2009-2010 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
- * 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
+ * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_OSREFERENCE_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
* limitations under the License.
*
- * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
*/
-
-#include <ptrauth.h>
+/*
+ * 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
+ *
+ */
+
#include <sys/cdefs.h>
__BEGIN_DECLS
@@ -41,543 +53,272 @@
#include <IOKit/IOWorkLoop.h>
#include <IOKit/IOTimeStamp.h>
-#include <IOKit/IOKitDebug.h>
-#if CONFIG_DTRACE
-#include <mach/sdt.h>
-#endif
-
-#include <libkern/Block.h>
-#include <libkern/Block_private.h>
-
#define super IOEventSource
OSDefineMetaClassAndStructors(IOTimerEventSource, IOEventSource)
-OSMetaClassDefineReservedUsedX86(IOTimerEventSource, 0);
-OSMetaClassDefineReservedUsedX86(IOTimerEventSource, 1);
-OSMetaClassDefineReservedUsedX86(IOTimerEventSource, 2);
+OSMetaClassDefineReservedUnused(IOTimerEventSource, 0);
+OSMetaClassDefineReservedUnused(IOTimerEventSource, 1);
+OSMetaClassDefineReservedUnused(IOTimerEventSource, 2);
OSMetaClassDefineReservedUnused(IOTimerEventSource, 3);
OSMetaClassDefineReservedUnused(IOTimerEventSource, 4);
OSMetaClassDefineReservedUnused(IOTimerEventSource, 5);
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.
//
-// 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.
//
-
-__inline__ void
-IOTimerEventSource::invokeAction(IOEventSource::Action _action, IOTimerEventSource * ts,
- OSObject * _owner, IOWorkLoop * _workLoop)
-{
- bool trace = (gIOKitTrace & kIOTraceTimers) ? true : false;
- void * address;
-
- if (kActionBlock & flags) {
- address = ptrauth_nop_cast(void *, _Block_get_invoke_fn((struct Block_layout *) actionBlock));
- } else {
- address = ptrauth_nop_cast(void *, _action);
- }
-
- if (trace) {
- IOTimeStampStartConstant(IODBG_TIMES(IOTIMES_ACTION),
- VM_KERNEL_ADDRHIDE(address),
- VM_KERNEL_ADDRHIDE(_owner));
- }
-
- if (kActionBlock & flags) {
- ((IOTimerEventSource::ActionBlock) actionBlock)(ts);
- } else {
- ((IOTimerEventSource::Action)_action)(_owner, ts);
- }
-
-#if CONFIG_DTRACE
- DTRACE_TMR3(iotescallout__expire, Action, address, OSObject, _owner, void, _workLoop);
-#endif
-
- if (trace) {
- IOTimeStampEndConstant(IODBG_TIMES(IOTIMES_ACTION),
- VM_KERNEL_UNSLIDE(address),
- VM_KERNEL_ADDRHIDE(_owner));
- }
-}
-
-void
-IOTimerEventSource::timeout(void *self)
-{
- IOTimerEventSource *me = (IOTimerEventSource *) self;
-
- IOStatisticsTimeout();
-
- if (me->enabled && me->action) {
- IOWorkLoop *
- wl = me->workLoop;
- if (wl) {
- IOEventSource::Action doit;
- wl->closeGate();
- IOStatisticsCloseGate();
- doit = me->action;
- if (doit && me->enabled && AbsoluteTime_to_scalar(&me->abstime)) {
- me->invokeAction(doit, me, me->owner, me->workLoop);
- }
- IOStatisticsOpenGate();
- wl->openGate();
- }
- }
-}
-
-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 *
- wl = me->reserved->workLoop;
- if (wl) {
- IOEventSource::Action doit;
- wl->closeGate();
- IOStatisticsCloseGate();
- doit = me->action;
- if (doit && (me->reserved->calloutGeneration == count)) {
- thread_call_start_iotes_invocation((thread_call_t)me->calloutEntry);
- me->invokeAction(doit, me, me->owner, me->workLoop);
- }
- IOStatisticsOpenGate();
- wl->openGate();
- }
- }
- if (me->reserved->workLoop) {
- me->reserved->workLoop->release();
- }
- me->release();
-}
-
-// -- work loop delivery
-
-bool
-IOTimerEventSource::checkForWork()
-{
- IOEventSource::Action doit;
-
- if (reserved
- && (reserved->calloutGenerationSignaled == reserved->calloutGeneration)
- && enabled && (doit = action)) {
- reserved->calloutGenerationSignaled = ~reserved->calloutGeneration;
- invokeAction(doit, this, owner, workLoop);
- }
-
- return false;
-}
-
-void
-IOTimerEventSource::timeoutSignaled(void * self, void * c)
-{
- IOTimerEventSource *me = (IOTimerEventSource *) self;
-
- me->reserved->calloutGenerationSignaled = (SInt32)(long) c;
- if (me->enabled) {
- me->signalWorkAvailable();
- }
-}
-
-// --
-
-void
-IOTimerEventSource::setTimeoutFunc()
-{
- thread_call_priority_t pri;
- uint32_t options;
-
- if (reserved) {
- panic("setTimeoutFunc already %p, %p", this, reserved);
- }
-
- // reserved != 0 means IOTimerEventSource::timeoutAndRelease is being used,
- // not a subclassed implementation
- reserved = IOMallocType(ExpansionData);
-
- reserved->calloutGenerationSignaled = ~reserved->calloutGeneration;
- // make use of an existing ivar for parameter passing
- options = (uint32_t) abstime;
- abstime = 0;
-
- thread_call_options_t tcoptions = 0;
- thread_call_func_t func = NULL;
-
- switch (kIOTimerEventSourceOptionsPriorityMask & options) {
- case kIOTimerEventSourceOptionsPriorityHigh:
- pri = THREAD_CALL_PRIORITY_HIGH;
- func = &IOTimerEventSource::timeoutAndRelease;
- break;
-
- case kIOTimerEventSourceOptionsPriorityKernel:
- pri = THREAD_CALL_PRIORITY_KERNEL;
- func = &IOTimerEventSource::timeoutAndRelease;
- break;
-
- case kIOTimerEventSourceOptionsPriorityKernelHigh:
- pri = THREAD_CALL_PRIORITY_KERNEL_HIGH;
- func = &IOTimerEventSource::timeoutAndRelease;
- break;
-
- case kIOTimerEventSourceOptionsPriorityUser:
- pri = THREAD_CALL_PRIORITY_USER;
- func = &IOTimerEventSource::timeoutAndRelease;
- break;
-
- case kIOTimerEventSourceOptionsPriorityLow:
- pri = THREAD_CALL_PRIORITY_LOW;
- func = &IOTimerEventSource::timeoutAndRelease;
- break;
-
- case kIOTimerEventSourceOptionsPriorityWorkLoop:
- pri = THREAD_CALL_PRIORITY_KERNEL;
- tcoptions |= THREAD_CALL_OPTIONS_SIGNAL;
- if (kIOTimerEventSourceOptionsAllowReenter & options) {
- break;
- }
- func = &IOTimerEventSource::timeoutSignaled;
- break;
-
- default:
- break;
- }
-
- assertf(func, "IOTimerEventSource options 0x%x", options);
- if (!func) {
- return; // init will fail
- }
- if (THREAD_CALL_OPTIONS_SIGNAL & tcoptions) {
- flags |= kActive;
- } else {
- flags |= kPassive;
- }
-
- if (!(kIOTimerEventSourceOptionsAllowReenter & options)) {
- tcoptions |= THREAD_CALL_OPTIONS_ONCE;
- }
-
- calloutEntry = (void *) thread_call_allocate_with_options(func,
- (thread_call_param_t) this, pri, tcoptions);
- assert(calloutEntry);
-}
-
-bool
-IOTimerEventSource::init(OSObject *inOwner, Action inAction)
-{
- if (!super::init(inOwner, (IOEventSource::Action) inAction)) {
- return false;
- }
-
- setTimeoutFunc();
- if (!calloutEntry) {
- return false;
- }
-
- IOStatisticsInitializeCounter();
-
- return true;
-}
-
-bool
-IOTimerEventSource::init(uint32_t options, OSObject *inOwner, Action inAction)
-{
- // make use of an existing ivar for parameter passing
- abstime = options;
- return init(inOwner, inAction);
-}
-
-IOTimerEventSource *
-IOTimerEventSource::timerEventSource(uint32_t inOptions, OSObject *inOwner, Action inAction)
-{
- IOTimerEventSource *me = new IOTimerEventSource;
-
- if (me && !me->init(inOptions, inOwner, inAction)) {
- me->release();
- return NULL;
- }
-
- return me;
-}
-
-IOTimerEventSource *
-IOTimerEventSource::timerEventSource(uint32_t options, OSObject *inOwner, ActionBlock _action)
-{
- IOTimerEventSource * tes;
- tes = IOTimerEventSource::timerEventSource(options, inOwner, (Action) NULL);
- if (tes) {
- tes->setActionBlock((IOEventSource::ActionBlock) _action);
- }
-
- return tes;
-}
-
-#define _thread_call_cancel(tc) ((kActive & flags) ? thread_call_cancel_wait((tc)) : thread_call_cancel((tc)))
+void IOTimerEventSource::timeout(void *self)
+{
+ IOTimerEventSource *me = (IOTimerEventSource *) self;
+
+ if (me->enabled && me->action)
+ {
+ IOWorkLoop *
+ wl = me->workLoop;
+ if (wl)
+ {
+ Action doit;
+ wl->closeGate();
+ 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);
+ (*doit)(me->owner, me);
+ }
+ wl->openGate();
+ }
+ }
+}
+
+void IOTimerEventSource::timeoutAndRelease(void * self, void * count)
+{
+ IOTimerEventSource *me = (IOTimerEventSource *) self;
+
+ if (me->enabled && me->action)
+ {
+ IOWorkLoop *
+ wl = me->reserved->workLoop;
+ if (wl)
+ {
+ Action doit;
+ wl->closeGate();
+ doit = (Action) me->action;
+ if (doit && (me->reserved->calloutGeneration == (SInt32) count))
+ {
+ IOTimeStampConstant(IODBG_TIMES(IOTIMES_ACTION),
+ (unsigned int) doit, (unsigned int) me->owner);
+ (*doit)(me->owner, me);
+ }
+ wl->openGate();
+ }
+ }
+
+ me->reserved->workLoop->release();
+ me->release();
+}
+
+void IOTimerEventSource::setTimeoutFunc()
+{
+ // reserved != 0 means IOTimerEventSource::timeoutAndRelease is being used,
+ // not a subclassed implementation
+ reserved = IONew(ExpansionData, 1);
+ calloutEntry = (void *) thread_call_allocate((thread_call_func_t) &IOTimerEventSource::timeoutAndRelease,
+ (thread_call_param_t) this);
+}
+
+bool IOTimerEventSource::init(OSObject *inOwner, Action inAction)
+{
+ if (!super::init(inOwner, (IOEventSource::Action) inAction) )
+ return false;
+
+ setTimeoutFunc();
+ if (!calloutEntry)
+ return false;
+
+ return true;
+}
IOTimerEventSource *
IOTimerEventSource::timerEventSource(OSObject *inOwner, Action inAction)
{
- return IOTimerEventSource::timerEventSource(
- kIOTimerEventSourceOptionsPriorityKernelHigh,
- inOwner, inAction);
-}
-
-void
-IOTimerEventSource::free()
-{
- if (calloutEntry) {
- __assert_only bool freed;
-
- cancelTimeout();
-
- freed = thread_call_free((thread_call_t) calloutEntry);
- assert(freed);
- }
-
- if (reserved) {
- IOFreeType(reserved, ExpansionData);
- }
-
- super::free();
-}
-
-void
-IOTimerEventSource::cancelTimeout()
-{
- if (reserved) {
- reserved->calloutGeneration++;
- }
- bool active = _thread_call_cancel((thread_call_t) calloutEntry);
- AbsoluteTime_to_scalar(&abstime) = 0;
- if (active && reserved && (kPassive & flags)) {
- release();
- workLoop->release();
- }
-}
-
-void
-IOTimerEventSource::enable()
-{
- super::enable();
- if (kIOReturnSuccess != wakeAtTime(abstime)) {
- super::disable(); // Problem re-scheduling timeout ignore enable
- }
-}
-
-void
-IOTimerEventSource::disable()
-{
- if (reserved) {
- reserved->calloutGeneration++;
- }
- bool active = _thread_call_cancel((thread_call_t) calloutEntry);
- super::disable();
- if (active && reserved && (kPassive & flags)) {
- release();
- workLoop->release();
- }
-}
-
-IOReturn
-IOTimerEventSource::setTimeoutTicks(UInt32 ticks)
-{
- return setTimeout(ticks, kTickScale);
-}
-
-IOReturn
-IOTimerEventSource::setTimeoutMS(UInt32 ms)
-{
- return setTimeout(ms, kMillisecondScale);
-}
-
-IOReturn
-IOTimerEventSource::setTimeoutUS(UInt32 us)
-{
- return setTimeout(us, kMicrosecondScale);
-}
-
-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;
-
- clock_interval_to_absolutetime_interval
- (interval.tv_nsec, kNanosecondScale, &nsecs);
- clock_interval_to_deadline
- (interval.tv_sec, NSEC_PER_SEC, &end);
- ADD_ABSOLUTETIME(&end, &nsecs);
-
- return wakeAtTime(end);
-}
-#endif
-
-IOReturn
-IOTimerEventSource::setTimeout(AbsoluteTime interval)
-{
- AbsoluteTime end;
- clock_absolutetime_interval_to_deadline(interval, &end);
- return wakeAtTime(end);
-}
-
-IOReturn
-IOTimerEventSource::setTimeout(uint32_t options,
- AbsoluteTime abstime, AbsoluteTime leeway)
-{
- AbsoluteTime end;
- if (options & kIOTimeOptionsContinuous) {
- clock_continuoustime_interval_to_deadline(abstime, &end);
- } else {
- clock_absolutetime_interval_to_deadline(abstime, &end);
- }
-
- return wakeAtTime(options, end, leeway);
-}
-
-IOReturn
-IOTimerEventSource::wakeAtTimeTicks(UInt32 ticks)
-{
- return wakeAtTime(ticks, kTickScale);
-}
-
-IOReturn
-IOTimerEventSource::wakeAtTimeMS(UInt32 ms)
-{
- return wakeAtTime(ms, kMillisecondScale);
-}
-
-IOReturn
-IOTimerEventSource::wakeAtTimeUS(UInt32 us)
-{
- return wakeAtTime(us, kMicrosecondScale);
-}
-
-IOReturn
-IOTimerEventSource::wakeAtTime(UInt32 inAbstime, UInt32 scale_factor)
-{
- AbsoluteTime end;
- clock_interval_to_absolutetime_interval(inAbstime, scale_factor, &end);
-
- return wakeAtTime(end);
-}
-
-#if !defined(__LP64__)
-IOReturn
-IOTimerEventSource::wakeAtTime(mach_timespec_t inAbstime)
-{
- AbsoluteTime end, nsecs;
-
- clock_interval_to_absolutetime_interval
- (inAbstime.tv_nsec, kNanosecondScale, &nsecs);
- clock_interval_to_absolutetime_interval
- (inAbstime.tv_sec, kSecondScale, &end);
- ADD_ABSOLUTETIME(&end, &nsecs);
-
- return wakeAtTime(end);
-}
-#endif
-
-void
-IOTimerEventSource::setWorkLoop(IOWorkLoop *inWorkLoop)
-{
- super::setWorkLoop(inWorkLoop);
- if (enabled && AbsoluteTime_to_scalar(&abstime) && workLoop) {
- wakeAtTime(abstime);
- }
-}
-
-IOReturn
-IOTimerEventSource::wakeAtTime(AbsoluteTime inAbstime)
-{
- return wakeAtTime(0, inAbstime, 0);
-}
-
-IOReturn
-IOTimerEventSource::wakeAtTime(uint32_t options, AbsoluteTime inAbstime, AbsoluteTime leeway)
-{
- if (!action) {
- return kIOReturnNoResources;
- }
-
- abstime = inAbstime;
- if (enabled && AbsoluteTime_to_scalar(&inAbstime) && AbsoluteTime_to_scalar(&abstime) && workLoop) {
- uint32_t tcoptions = 0;
-
- if (kIOTimeOptionsWithLeeway & options) {
- tcoptions |= THREAD_CALL_DELAY_LEEWAY;
- }
- if (kIOTimeOptionsContinuous & options) {
- tcoptions |= THREAD_CALL_CONTINUOUS;
- }
-
- if (reserved) {
- if (kPassive & flags) {
- retain();
- workLoop->retain();
- }
- reserved->workLoop = workLoop;
- reserved->calloutGeneration++;
- if (thread_call_enter_delayed_with_leeway((thread_call_t) calloutEntry,
- (void *)(uintptr_t) reserved->calloutGeneration, inAbstime, leeway, tcoptions)
- && (kPassive & flags)) {
- release();
- workLoop->release();
- }
- } else {
- thread_call_enter_delayed_with_leeway((thread_call_t) calloutEntry,
- NULL, inAbstime, leeway, tcoptions);
- }
- }
-
- return kIOReturnSuccess;
-}
+ IOTimerEventSource *me = new IOTimerEventSource;
+
+ if (me && !me->init(inOwner, inAction)) {
+ me->release();
+ return 0;
+ }
+
+ return me;
+}
+
+void IOTimerEventSource::free()
+{
+ if (calloutEntry) {
+ cancelTimeout();
+ thread_call_free((thread_call_t) calloutEntry);
+ }
+
+ if (reserved)
+ IODelete(reserved, ExpansionData, 1);
+
+ super::free();
+}
+
+void IOTimerEventSource::cancelTimeout()
+{
+ if (reserved)
+ reserved->calloutGeneration++;
+ bool active = thread_call_cancel((thread_call_t) calloutEntry);
+ AbsoluteTime_to_scalar(&abstime) = 0;
+ if (active && reserved)
+ {
+ release();
+ workLoop->release();
+ }
+}
+
+void IOTimerEventSource::enable()
+{
+ super::enable();
+ if (kIOReturnSuccess != wakeAtTime(abstime))
+ super::disable(); // Problem re-scheduling timeout ignore enable
+}
+
+void IOTimerEventSource::disable()
+{
+ if (reserved)
+ reserved->calloutGeneration++;
+ bool active = thread_call_cancel((thread_call_t) calloutEntry);
+ super::disable();
+ if (active && reserved)
+ {
+ release();
+ workLoop->release();
+ }
+}
+
+IOReturn IOTimerEventSource::setTimeoutTicks(UInt32 ticks)
+{
+ return setTimeout(ticks, kTickScale);
+}
+
+IOReturn IOTimerEventSource::setTimeoutMS(UInt32 ms)
+{
+ return setTimeout(ms, kMillisecondScale);
+}
+
+IOReturn IOTimerEventSource::setTimeoutUS(UInt32 us)
+{
+ return setTimeout(us, kMicrosecondScale);
+}
+
+IOReturn IOTimerEventSource::setTimeout(UInt32 interval, UInt32 scale_factor)
+{
+ AbsoluteTime end;
+
+ clock_interval_to_deadline(interval, scale_factor, &end);
+ return wakeAtTime(end);
+}
+
+IOReturn IOTimerEventSource::setTimeout(mach_timespec_t interval)
+{
+ AbsoluteTime end, nsecs;
+
+ clock_interval_to_absolutetime_interval
+ (interval.tv_nsec, kNanosecondScale, &nsecs);
+ clock_interval_to_deadline
+ (interval.tv_sec, NSEC_PER_SEC, &end);
+ ADD_ABSOLUTETIME(&end, &nsecs);
+
+ return wakeAtTime(end);
+}
+
+IOReturn IOTimerEventSource::setTimeout(AbsoluteTime interval)
+{
+ AbsoluteTime end;
+
+ clock_get_uptime(&end);
+ ADD_ABSOLUTETIME(&end, &interval);
+
+ return wakeAtTime(end);
+}
+
+IOReturn IOTimerEventSource::wakeAtTimeTicks(UInt32 ticks)
+{
+ return wakeAtTime(ticks, kTickScale);
+}
+
+IOReturn IOTimerEventSource::wakeAtTimeMS(UInt32 ms)
+{
+ return wakeAtTime(ms, kMillisecondScale);
+}
+
+IOReturn IOTimerEventSource::wakeAtTimeUS(UInt32 us)
+{
+ return wakeAtTime(us, kMicrosecondScale);
+}
+
+IOReturn IOTimerEventSource::wakeAtTime(UInt32 inAbstime, UInt32 scale_factor)
+{
+ AbsoluteTime end;
+ clock_interval_to_absolutetime_interval(inAbstime, scale_factor, &end);
+
+ return wakeAtTime(end);
+}
+
+IOReturn IOTimerEventSource::wakeAtTime(mach_timespec_t inAbstime)
+{
+ AbsoluteTime end, nsecs;
+
+ clock_interval_to_absolutetime_interval
+ (inAbstime.tv_nsec, kNanosecondScale, &nsecs);
+ clock_interval_to_absolutetime_interval
+ (inAbstime.tv_sec, kSecondScale, &end);
+ ADD_ABSOLUTETIME(&end, &nsecs);
+
+ return wakeAtTime(end);
+}
+
+void IOTimerEventSource::setWorkLoop(IOWorkLoop *inWorkLoop)
+{
+ super::setWorkLoop(inWorkLoop);
+ if ( enabled && AbsoluteTime_to_scalar(&abstime) && workLoop )
+ wakeAtTime(abstime);
+}
+
+IOReturn IOTimerEventSource::wakeAtTime(AbsoluteTime inAbstime)
+{
+ if (!action)
+ return kIOReturnNoResources;
+
+ abstime = inAbstime;
+ if ( enabled && AbsoluteTime_to_scalar(&abstime) && workLoop )
+ {
+ if (reserved)
+ {
+ retain();
+ workLoop->retain();
+ reserved->workLoop = workLoop;
+ reserved->calloutGeneration++;
+ if (thread_call_enter1_delayed((thread_call_t) calloutEntry,
+ (void *) reserved->calloutGeneration, abstime))
+ {
+ release();
+ workLoop->release();
+ }
+ }
+ else
+ thread_call_enter_delayed((thread_call_t) calloutEntry, abstime);
+ }
+
+ return kIOReturnSuccess;
+}