00001 /*======================================================================= 00002 * Copyright 1991-1996, Silicon Graphics, Inc. 00003 * ALL RIGHTS RESERVED 00004 * 00005 * UNPUBLISHED -- Rights reserved under the copyright laws of the United 00006 * States. Use of a copyright notice is precautionary only and does not 00007 * imply publication or disclosure. 00008 * 00009 * U.S. GOVERNMENT RESTRICTED RIGHTS LEGEND: 00010 * Use, duplication or disclosure by the Government is subject to restrictions 00011 * as set forth in FAR 52.227.19(c)(2) or subparagraph (c)(1)(ii) of the Rights 00012 * in Technical Data and Computer Software clause at DFARS 252.227-7013 and/or 00013 * in similar or successor clauses in the FAR, or the DOD or NASA FAR 00014 * Supplement. Contractor/manufacturer is Silicon Graphics, Inc., 00015 * 2011 N. Shoreline Blvd. Mountain View, CA 94039-7311. 00016 * 00017 * THE CONTENT OF THIS WORK CONTAINS CONFIDENTIAL AND PROPRIETARY 00018 * INFORMATION OF SILICON GRAPHICS, INC. ANY DUPLICATION, MODIFICATION, 00019 * DISTRIBUTION, OR DISCLOSURE IN ANY FORM, IN WHOLE, OR IN PART, IS STRICTLY 00020 * PROHIBITED WITHOUT THE PRIOR EXPRESS WRITTEN PERMISSION OF SILICON 00021 * GRAPHICS, INC. 00022 **=======================================================================*/ 00023 /*======================================================================= 00024 ** Author : Paul S. Strauss (MMM yyyy) 00025 ** Modified by : Gavin Bell (MMM yyyy) 00026 **=======================================================================*/ 00027 /*======================================================================= 00028 *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.), *** 00029 *** AND IS DISTRIBUTED UNDER A LICENSE AGREEMENT. *** 00030 *** *** 00031 *** REPRODUCTION, DISCLOSURE, OR USE, IN WHOLE OR IN PART, OTHER THAN AS *** 00032 *** SPECIFIED IN THE LICENSE ARE NOT TO BE UNDERTAKEN EXCEPT WITH PRIOR *** 00033 *** WRITTEN AUTHORIZATION OF FEI S.A.S. *** 00034 *** *** 00035 *** RESTRICTED RIGHTS LEGEND *** 00036 *** USE, DUPLICATION, OR DISCLOSURE BY THE GOVERNMENT OF THE CONTENT OF THIS *** 00037 *** WORK OR RELATED DOCUMENTATION IS SUBJECT TO RESTRICTIONS AS SET FORTH IN *** 00038 *** SUBPARAGRAPH (C)(1) OF THE COMMERCIAL COMPUTER SOFTWARE RESTRICTED RIGHT *** 00039 *** CLAUSE AT FAR 52.227-19 OR SUBPARAGRAPH (C)(1)(II) OF THE RIGHTS IN *** 00040 *** TECHNICAL DATA AND COMPUTER SOFTWARE CLAUSE AT DFARS 52.227-7013. *** 00041 *** *** 00042 *** COPYRIGHT (C) 1996-2020 BY FEI S.A.S, *** 00043 *** BORDEAUX, FRANCE *** 00044 *** ALL RIGHTS RESERVED *** 00045 **=======================================================================*/ 00046 /*======================================================================= 00047 ** Modified by : VSG (MMM YYYY) 00048 **=======================================================================*/ 00049 00050 00051 #ifndef _SO_CACHE_ELEMENT_ 00052 #define _SO_CACHE_ELEMENT_ 00053 00054 #include <Inventor/SbBasic.h> 00055 #include <Inventor/elements/SoSubElement.h> 00056 #include <Inventor/threads/SbThreadLocalStorage.h> 00057 00058 class SoCache; 00059 00072 SoEXTENDER_Documented class SoCacheElement : public SoElement { 00073 00074 SO_ELEMENT_HEADER(SoCacheElement); 00075 00076 public: 00080 static void set(SoState *state, SoCache *cache); 00081 00085 SoCache * getCache() const { return cache; } 00086 00090 static SbBool anyOpen(SoState *state); 00091 00095 static void closeAnyOpen(SoState* state); 00096 00101 static void invalidate(SoState *state); 00102 00106 virtual void pop(SoState *state, const SoElement *prevTopElement); 00107 00111 SoCacheElement * getNextCacheElement() const 00112 { return (SoCacheElement *) getNextInStack(); } 00113 00114 private: 00115 00117 virtual void init(SoState *state); 00118 00124 virtual SbBool matches(const SoElement* elt) const; 00125 00129 virtual SoElement* copyMatchInfo() const; 00130 00131 private: 00132 // Initializes the SoCacheElement class 00133 static void initClass(); 00134 static void exitClass(); 00135 00136 // Adds the given element to the elements used lists of all 00137 // currently open caches in the state 00138 static void addElement(SoState *state, const SoElement *elt); 00139 00140 // Adds a dependency on the given cache to all currently open 00141 // caches in the state 00142 static void addCacheDependency(SoState *state, SoCache *cache); 00143 00144 // Sets invalidated bit, and returns its old value. Used by 00145 // SoGLCacheList so auto-caching doesn't cache too much. 00146 static SbBool setInvalid(SbBool newValue); 00147 00148 // returns the current cache, from the top of the stack. Does not 00149 // cause a cache dependence like getConstElement(). 00150 static SoCache * getCurrentCache(SoState *state) 00151 {return state->getElementNoPush<SoCacheElement>()->cache;} 00152 00154 static void flagDelayedPath(SoState* state); 00155 00156 static SbBool listIsOpen(SoState* state); 00157 00158 struct MTstruct 00159 { 00160 bool invalidated; 00161 }; 00162 00163 SB_THREAD_TLS_HEADER(); 00164 00165 private: 00166 virtual ~SoCacheElement(); 00167 00168 private: 00169 SoCache* cache; // Stores pointer to cache 00170 00171 friend class SoElement; 00172 }; 00173 00174 #endif /* _SO_CACHE_ELEMENT_ */ 00175 00176 00177