pb_bufmgr_alt.c revision ea4ca10b1bec67c8a60db0e4e5581318ce9f62f9
1/************************************************************************** 2 * 3 * Copyright 2007-2008 Tungsten Graphics, Inc., Cedar Park, Texas. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28/** 29 * \file 30 * Allocate buffers from two alternative buffer providers. 31 * 32 * \author Jose Fonseca <jrfonseca@tungstengraphics.com> 33 */ 34 35 36#include "pipe/p_compiler.h" 37#include "pipe/p_debug.h" 38#include "pipe/p_util.h" 39 40#include "pb_buffer.h" 41#include "pb_bufmgr.h" 42 43 44struct pb_alt_manager 45{ 46 struct pb_manager base; 47 48 struct pb_manager *provider1; 49 struct pb_manager *provider2; 50}; 51 52 53static INLINE struct pb_alt_manager * 54pb_alt_manager(struct pb_manager *mgr) 55{ 56 assert(mgr); 57 return (struct pb_alt_manager *)mgr; 58} 59 60 61static struct pb_buffer * 62pb_alt_manager_create_buffer(struct pb_manager *_mgr, 63 size_t size, 64 const struct pb_desc *desc) 65{ 66 struct pb_alt_manager *mgr = pb_alt_manager(_mgr); 67 struct pb_buffer *buf; 68 69 buf = mgr->provider1->create_buffer(mgr->provider1, size, desc); 70 if(buf) 71 return buf; 72 73 buf = mgr->provider2->create_buffer(mgr->provider2, size, desc); 74 return buf; 75} 76 77 78static void 79pb_alt_manager_destroy(struct pb_manager *mgr) 80{ 81 FREE(mgr); 82} 83 84 85struct pb_manager * 86pb_alt_manager_create(struct pb_manager *provider1, 87 struct pb_manager *provider2) 88{ 89 struct pb_alt_manager *mgr; 90 91 if(!provider1 || !provider2) 92 return NULL; 93 94 mgr = CALLOC_STRUCT(pb_alt_manager); 95 if (!mgr) 96 return NULL; 97 98 mgr->base.destroy = pb_alt_manager_destroy; 99 mgr->base.create_buffer = pb_alt_manager_create_buffer; 100 mgr->provider1 = provider1; 101 mgr->provider2 = provider2; 102 103 return &mgr->base; 104} 105