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Annotation of XNU/iokit/Kernel/IOEventSource.cpp, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
                      3:  *
                      4:  * @APPLE_LICENSE_HEADER_START@
                      5:  * 
                      6:  * The contents of this file constitute Original Code as defined in and
                      7:  * are subject to the Apple Public Source License Version 1.1 (the
                      8:  * "License").  You may not use this file except in compliance with the
                      9:  * License.  Please obtain a copy of the License at
                     10:  * http://www.apple.com/publicsource and read it before using this file.
                     11:  * 
                     12:  * This Original Code and all software distributed under the License are
                     13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
                     14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
                     15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
                     16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
                     17:  * License for the specific language governing rights and limitations
                     18:  * under the License.
                     19:  * 
                     20:  * @APPLE_LICENSE_HEADER_END@
                     21:  */
                     22: /*
                     23: Copyright (c) 1998 Apple Computer, Inc.  All rights reserved.
                     24: 
                     25: HISTORY
                     26:     1998-7-13  Godfrey van der Linden(gvdl)
                     27:         Created.
                     28: ]*/
                     29: #include <IOKit/IOLib.h>
                     30: 
                     31: #include <IOKit/IOEventSource.h>
                     32: #include <IOKit/IOWorkLoop.h>
                     33: 
                     34: #define super OSObject
                     35: 
                     36: OSDefineMetaClass(IOEventSource, OSObject)
                     37: OSDefineAbstractStructors(IOEventSource, OSObject)
                     38: 
                     39: bool IOEventSource::init(OSObject *inOwner,
                     40:                          Action inAction = 0)
                     41: {
                     42:     if (!inOwner)
                     43:         return false;
                     44: 
                     45:     owner = inOwner;
                     46: 
                     47:     if ( !super::init() )
                     48:         return false;
                     49: 
                     50:     (void) setAction(inAction);
                     51:     enabled = true;
                     52: 
                     53:     return true;
                     54: }
                     55: 
                     56: IOEventSource::Action IOEventSource::getAction () const { return action; };
                     57: 
                     58: void IOEventSource::setAction(Action inAction)
                     59: {
                     60:     action = inAction;
                     61: }
                     62: 
                     63: IOEventSource *IOEventSource::getNext() const { return eventChainNext; };
                     64: 
                     65: void IOEventSource::setNext(IOEventSource *inNext)
                     66: {
                     67:     eventChainNext = inNext;
                     68: }
                     69: 
                     70: void IOEventSource::enable()
                     71: {
                     72:     enabled = true;
                     73:     if (workLoop)
                     74:         return workLoop->signalWorkAvailable();
                     75: }
                     76: 
                     77: void IOEventSource::disable()
                     78: {
                     79:     enabled = false;
                     80: }
                     81: 
                     82: bool IOEventSource::isEnabled() const
                     83: {
                     84:     return enabled;
                     85: }
                     86: 
                     87: void IOEventSource::setWorkLoop(IOWorkLoop *inWorkLoop)
                     88: {
                     89:     workLoop = inWorkLoop;
                     90: }
                     91: 
                     92: IOWorkLoop *IOEventSource::getWorkLoop() const
                     93: {
                     94:     return workLoop;
                     95: }
                     96: 
                     97: bool IOEventSource::onThread() const
                     98: {
                     99:     return (workLoop != 0) && workLoop->onThread();
                    100: }

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