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00001 /* 00002 * 00003 * Copyright (C) 2000 Silicon Graphics, Inc. All Rights Reserved. 00004 * 00005 * This library is free software; you can redistribute it and/or 00006 * modify it under the terms of the GNU Lesser General Public 00007 * License as published by the Free Software Foundation; either 00008 * version 2.1 of the License, or (at your option) any later version. 00009 * 00010 * This library is distributed in the hope that it will be useful, 00011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 * Lesser General Public License for more details. 00014 * 00015 * Further, this software is distributed without any warranty that it is 00016 * free of the rightful claim of any third person regarding infringement 00017 * or the like. Any license provided herein, whether implied or 00018 * otherwise, applies only to this software file. Patent licenses, if 00019 * any, provided herein do not apply to combinations of this program with 00020 * other software, or any other product whatsoever. 00021 * 00022 * You should have received a copy of the GNU Lesser General Public 00023 * License along with this library; if not, write to the Free Software 00024 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00025 * 00026 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, 00027 * Mountain View, CA 94043, or: 00028 * 00029 * http://www.sgi.com 00030 * 00031 * For further information regarding this notice, see: 00032 * 00033 * http://oss.sgi.com/projects/GenInfo/NoticeExplan/ 00034 * 00035 */ 00036 00037 00038 /* 00039 * Copyright (C) 1990,91 Silicon Graphics, Inc. 00040 * 00041 _______________________________________________________________________ 00042 ______________ S I L I C O N G R A P H I C S I N C . ____________ 00043 | 00044 | $Revision: 1.1.1.1 $ 00045 | 00046 | Description: 00047 | Manager for scheduling and triggering sensors. The manager 00048 | maintains a queue of delay sensors (derived from SoDelayQueueSensor) 00049 | and timer sensors (derived from SoTimerQueueSensor). 00050 | 00051 | Classes 00052 | SoSensorManager 00053 | 00054 | Author(s) : Nick Thompson, Gavin Bell 00055 | 00056 ______________ S I L I C O N G R A P H I C S I N C . ____________ 00057 _______________________________________________________________________ 00058 */ 00059 00060 #ifndef _SO_SENSOR_MANAGER_ 00061 #define _SO_SENSOR_MANAGER_ 00062 00063 #include <Inventor/misc/SoBasic.h> 00064 #include <Inventor/SbTime.h> 00065 00066 class SoSensor; 00067 class SoDelayQueueSensor; 00068 class SoTimerQueueSensor; 00069 class SoTimerSensor; 00070 class SoAlarmSensor; 00071 00072 SoINTERNAL class INVENTOR_API SoSensorManager { 00073 public: 00074 00076 SoSensorManager(); 00077 ~SoSensorManager(); 00078 00081 void setChangedCallback(void (*funcArg)(void *), void *data) 00082 { changedFunc = funcArg; changedFuncData = data; } 00083 00085 void insertDelaySensor(SoDelayQueueSensor *s); 00086 void insertTimerSensor(SoTimerQueueSensor *s); 00087 void removeDelaySensor(SoDelayQueueSensor *s); 00088 void removeTimerSensor(SoTimerQueueSensor *s); 00089 00092 void rescheduleTimer(SoTimerSensor *s); 00093 void removeRescheduledTimer(SoTimerQueueSensor *s); 00094 00098 void setDelaySensorTimeout(const SbTime &t); 00099 const SbTime &getDelaySensorTimeout(); 00100 00105 void processDelayQueue(SbBool isIdle); 00106 00108 void processImmediateQueue(); 00109 00111 void processTimerQueue(); 00112 00114 SbBool isDelaySensorPending() 00115 { return (delayQueue != NULL); } 00116 00120 SbBool isTimerSensorPending(SbTime &tm); 00121 00124 int doSelect(int nfds, fd_set *readfds, fd_set *writefds, 00125 fd_set *exceptfds, 00126 struct timeval *userTimeOut); 00127 private: 00128 SoSensor *delayQueue; 00129 SoSensor *timerQueue; 00130 SoSensor *rescheduleQueue; 00131 00134 SbTime delayQTimeout; 00135 SoAlarmSensor *delayQTimeoutSensor; 00136 static void delayQTimeoutCB(void *, SoSensor *); 00137 00143 int processingQueue; 00144 00145 uint32_t delayQCount; 00146 00148 void insert(SoSensor *s, SoSensor *&head); 00149 void remove(SoSensor *s, SoSensor *&head); 00150 00152 void (*changedFunc)(void *); 00153 void *changedFuncData; 00154 00156 void notifyChanged(); 00157 }; 00158 00159 #endif /* _SO_SENSOR_MANAGER_ */