00001 /************************************************************************** 00002 * 00003 * Copyright 2007-2008 Tungsten Graphics, Inc., Cedar Park, Texas. 00004 * All Rights Reserved. 00005 * 00006 * Permission is hereby granted, free of charge, to any person obtaining a 00007 * copy of this software and associated documentation files (the 00008 * "Software"), to deal in the Software without restriction, including 00009 * without limitation the rights to use, copy, modify, merge, publish, 00010 * distribute, sub license, and/or sell copies of the Software, and to 00011 * permit persons to whom the Software is furnished to do so, subject to 00012 * the following conditions: 00013 * 00014 * The above copyright notice and this permission notice (including the 00015 * next paragraph) shall be included in all copies or substantial portions 00016 * of the Software. 00017 * 00018 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 00019 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 00020 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 00021 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 00022 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 00023 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 00024 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00025 * 00026 **************************************************************************/ 00027 00036 #include "pipe/p_compiler.h" 00037 #include "pipe/p_debug.h" 00038 #include "util/u_memory.h" 00039 00040 #include "pb_buffer.h" 00041 #include "pb_bufmgr.h" 00042 00043 00044 struct pb_alt_manager 00045 { 00046 struct pb_manager base; 00047 00048 struct pb_manager *provider1; 00049 struct pb_manager *provider2; 00050 }; 00051 00052 00053 static INLINE struct pb_alt_manager * 00054 pb_alt_manager(struct pb_manager *mgr) 00055 { 00056 assert(mgr); 00057 return (struct pb_alt_manager *)mgr; 00058 } 00059 00060 00061 static struct pb_buffer * 00062 pb_alt_manager_create_buffer(struct pb_manager *_mgr, 00063 size_t size, 00064 const struct pb_desc *desc) 00065 { 00066 struct pb_alt_manager *mgr = pb_alt_manager(_mgr); 00067 struct pb_buffer *buf; 00068 00069 buf = mgr->provider1->create_buffer(mgr->provider1, size, desc); 00070 if(buf) 00071 return buf; 00072 00073 buf = mgr->provider2->create_buffer(mgr->provider2, size, desc); 00074 return buf; 00075 } 00076 00077 00078 static void 00079 pb_alt_manager_flush(struct pb_manager *_mgr) 00080 { 00081 struct pb_alt_manager *mgr = pb_alt_manager(_mgr); 00082 00083 assert(mgr->provider1->flush); 00084 if(mgr->provider1->flush) 00085 mgr->provider1->flush(mgr->provider1); 00086 00087 assert(mgr->provider2->flush); 00088 if(mgr->provider2->flush) 00089 mgr->provider2->flush(mgr->provider2); 00090 } 00091 00092 00093 static void 00094 pb_alt_manager_destroy(struct pb_manager *mgr) 00095 { 00096 FREE(mgr); 00097 } 00098 00099 00100 struct pb_manager * 00101 pb_alt_manager_create(struct pb_manager *provider1, 00102 struct pb_manager *provider2) 00103 { 00104 struct pb_alt_manager *mgr; 00105 00106 if(!provider1 || !provider2) 00107 return NULL; 00108 00109 mgr = CALLOC_STRUCT(pb_alt_manager); 00110 if (!mgr) 00111 return NULL; 00112 00113 mgr->base.destroy = pb_alt_manager_destroy; 00114 mgr->base.create_buffer = pb_alt_manager_create_buffer; 00115 mgr->base.flush = pb_alt_manager_flush; 00116 mgr->provider1 = provider1; 00117 mgr->provider2 = provider2; 00118 00119 return &mgr->base; 00120 }