X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/e5568f75972dfc723778653c11cb6b4dc825716a..b7266188b87f3620ec3f9f717e57194a7dd989fe:/iokit/Kernel/IOTimerEventSource.cpp diff --git a/iokit/Kernel/IOTimerEventSource.cpp b/iokit/Kernel/IOTimerEventSource.cpp index fc6f7d091..ed45f6ab9 100644 --- a/iokit/Kernel/IOTimerEventSource.cpp +++ b/iokit/Kernel/IOTimerEventSource.cpp @@ -1,23 +1,29 @@ /* * Copyright (c) 1998-2000 Apple Computer, 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@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. @@ -57,6 +63,11 @@ OSMetaClassDefineReservedUnused(IOTimerEventSource, 5); OSMetaClassDefineReservedUnused(IOTimerEventSource, 6); OSMetaClassDefineReservedUnused(IOTimerEventSource, 7); +// +// 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 @@ -66,22 +77,62 @@ void IOTimerEventSource::timeout(void *self) { IOTimerEventSource *me = (IOTimerEventSource *) self; - if (me->enabled) { - Action doit = (Action) me->action; + 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), + (uintptr_t) doit, (uintptr_t) me->owner); + (*doit)(me->owner, me); + } + wl->openGate(); + } + } +} - if (doit) { - IOTimeStampConstant(IODBG_TIMES(IOTIMES_ACTION), - (unsigned int) doit, (unsigned int) me->owner); - me->closeGate(); - (*doit)(me->owner, me); - me->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; + + 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 == count)) + { + IOTimeStampConstant(IODBG_TIMES(IOTIMES_ACTION), + (uintptr_t) doit, (uintptr_t) me->owner); + (*doit)(me->owner, me); + } + wl->openGate(); } } + + me->reserved->workLoop->release(); + me->release(); } void IOTimerEventSource::setTimeoutFunc() { - calloutEntry = (void *) thread_call_allocate((thread_call_func_t) timeout, + // 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); } @@ -117,13 +168,23 @@ void IOTimerEventSource::free() thread_call_free((thread_call_t) calloutEntry); } + if (reserved) + IODelete(reserved, ExpansionData, 1); + super::free(); } void IOTimerEventSource::cancelTimeout() { - thread_call_cancel((thread_call_t) calloutEntry); + 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() @@ -135,13 +196,20 @@ void IOTimerEventSource::enable() void IOTimerEventSource::disable() { - thread_call_cancel((thread_call_t) calloutEntry); + 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, NSEC_PER_SEC/hz); + return setTimeout(ticks, kTickScale); } IOReturn IOTimerEventSource::setTimeoutMS(UInt32 ms) @@ -157,11 +225,12 @@ IOReturn IOTimerEventSource::setTimeoutUS(UInt32 us) 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; @@ -174,6 +243,7 @@ IOReturn IOTimerEventSource::setTimeout(mach_timespec_t interval) return wakeAtTime(end); } +#endif IOReturn IOTimerEventSource::setTimeout(AbsoluteTime interval) { @@ -187,7 +257,7 @@ IOReturn IOTimerEventSource::setTimeout(AbsoluteTime interval) IOReturn IOTimerEventSource::wakeAtTimeTicks(UInt32 ticks) { - return wakeAtTime(ticks, NSEC_PER_SEC/hz); + return wakeAtTime(ticks, kTickScale); } IOReturn IOTimerEventSource::wakeAtTimeMS(UInt32 ms) @@ -200,26 +270,35 @@ IOReturn IOTimerEventSource::wakeAtTimeUS(UInt32 us) return wakeAtTime(us, kMicrosecondScale); } -IOReturn IOTimerEventSource::wakeAtTime(UInt32 abstime, UInt32 scale_factor) +IOReturn IOTimerEventSource::wakeAtTime(UInt32 inAbstime, UInt32 scale_factor) { AbsoluteTime end; - clock_interval_to_absolutetime_interval(abstime, scale_factor, &end); + clock_interval_to_absolutetime_interval(inAbstime, scale_factor, &end); return wakeAtTime(end); } -IOReturn IOTimerEventSource::wakeAtTime(mach_timespec_t abstime) +#if !defined(__LP64__) +IOReturn IOTimerEventSource::wakeAtTime(mach_timespec_t inAbstime) { AbsoluteTime end, nsecs; clock_interval_to_absolutetime_interval - (abstime.tv_nsec, kNanosecondScale, &nsecs); + (inAbstime.tv_nsec, kNanosecondScale, &nsecs); clock_interval_to_absolutetime_interval - (abstime.tv_sec, kSecondScale, &end); + (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) { @@ -227,8 +306,24 @@ IOReturn IOTimerEventSource::wakeAtTime(AbsoluteTime inAbstime) return kIOReturnNoResources; abstime = inAbstime; - if ( enabled && AbsoluteTime_to_scalar(&abstime) ) - thread_call_enter_delayed((thread_call_t) calloutEntry, abstime); + if ( enabled && AbsoluteTime_to_scalar(&inAbstime) && 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, inAbstime)) + { + release(); + workLoop->release(); + } + } + else + thread_call_enter_delayed((thread_call_t) calloutEntry, inAbstime); + } return kIOReturnSuccess; }