pb_bufmgr_mm.c revision 17158c2f00f5bee29ec8239367fd5498f22e4a91
1/************************************************************************** 2 * 3 * Copyright 2006 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 * Buffer manager using the old texture memory manager. 31 * 32 * \author Jos� Fonseca <jrfonseca@tungstengraphics.com> 33 */ 34 35 36#include "linked_list.h" 37 38#include "pipe/p_defines.h" 39#include "pipe/p_debug.h" 40#include "pipe/p_thread.h" 41#include "pipe/p_util.h" 42#include "util/u_mm.h" 43#include "pb_buffer.h" 44#include "pb_bufmgr.h" 45 46 47/** 48 * Convenience macro (type safe). 49 */ 50#define SUPER(__derived) (&(__derived)->base) 51 52 53struct mm_pb_manager 54{ 55 struct pb_manager base; 56 57 _glthread_Mutex mutex; 58 59 size_t size; 60 struct mem_block *heap; 61 62 size_t align2; 63 64 struct pb_buffer *buffer; 65 void *map; 66}; 67 68 69static INLINE struct mm_pb_manager * 70mm_pb_manager(struct pb_manager *mgr) 71{ 72 assert(mgr); 73 return (struct mm_pb_manager *)mgr; 74} 75 76 77struct mm_buffer 78{ 79 struct pb_buffer base; 80 81 struct mm_pb_manager *mgr; 82 83 struct mem_block *block; 84}; 85 86 87static INLINE struct mm_buffer * 88mm_buffer(struct pb_buffer *buf) 89{ 90 assert(buf); 91 return (struct mm_buffer *)buf; 92} 93 94 95static void 96mm_buffer_destroy(struct pb_buffer *buf) 97{ 98 struct mm_buffer *mm_buf = mm_buffer(buf); 99 struct mm_pb_manager *mm = mm_buf->mgr; 100 101 assert(buf->base.refcount == 0); 102 103 _glthread_LOCK_MUTEX(mm->mutex); 104 mmFreeMem(mm_buf->block); 105 FREE(buf); 106 _glthread_UNLOCK_MUTEX(mm->mutex); 107} 108 109 110static void * 111mm_buffer_map(struct pb_buffer *buf, 112 unsigned flags) 113{ 114 struct mm_buffer *mm_buf = mm_buffer(buf); 115 struct mm_pb_manager *mm = mm_buf->mgr; 116 117 return (unsigned char *) mm->map + mm_buf->block->ofs; 118} 119 120 121static void 122mm_buffer_unmap(struct pb_buffer *buf) 123{ 124 /* No-op */ 125} 126 127 128static void 129mm_buffer_get_base_buffer(struct pb_buffer *buf, 130 struct pb_buffer **base_buf, 131 unsigned *offset) 132{ 133 struct mm_buffer *mm_buf = mm_buffer(buf); 134 struct mm_pb_manager *mm = mm_buf->mgr; 135 pb_get_base_buffer(mm->buffer, base_buf, offset); 136 *offset += mm_buf->block->ofs; 137} 138 139 140static const struct pb_vtbl 141mm_buffer_vtbl = { 142 mm_buffer_destroy, 143 mm_buffer_map, 144 mm_buffer_unmap, 145 mm_buffer_get_base_buffer 146}; 147 148 149static struct pb_buffer * 150mm_bufmgr_create_buffer(struct pb_manager *mgr, 151 size_t size, 152 const struct pb_desc *desc) 153{ 154 struct mm_pb_manager *mm = mm_pb_manager(mgr); 155 struct mm_buffer *mm_buf; 156 157 /* We don't handle alignments larger then the one initially setup */ 158 assert(desc->alignment % (1 << mm->align2) == 0); 159 if(desc->alignment % (1 << mm->align2)) 160 return NULL; 161 162 _glthread_LOCK_MUTEX(mm->mutex); 163 164 mm_buf = CALLOC_STRUCT(mm_buffer); 165 if (!mm_buf) { 166 _glthread_UNLOCK_MUTEX(mm->mutex); 167 return NULL; 168 } 169 170 mm_buf->base.base.refcount = 1; 171 mm_buf->base.base.alignment = desc->alignment; 172 mm_buf->base.base.usage = desc->usage; 173 mm_buf->base.base.size = size; 174 175 mm_buf->base.vtbl = &mm_buffer_vtbl; 176 177 mm_buf->mgr = mm; 178 179 mm_buf->block = mmAllocMem(mm->heap, size, mm->align2, 0); 180 if(!mm_buf->block) { 181 debug_printf("warning: heap full\n"); 182#if 0 183 mmDumpMemInfo(mm->heap); 184#endif 185 186 mm_buf->block = mmAllocMem(mm->heap, size, mm->align2, 0); 187 if(!mm_buf->block) { 188 assert(0); 189 FREE(mm_buf); 190 _glthread_UNLOCK_MUTEX(mm->mutex); 191 return NULL; 192 } 193 } 194 195 /* Some sanity checks */ 196 assert(0 <= mm_buf->block->ofs && mm_buf->block->ofs < mm->size); 197 assert(size <= mm_buf->block->size && mm_buf->block->ofs + mm_buf->block->size <= mm->size); 198 199 _glthread_UNLOCK_MUTEX(mm->mutex); 200 return SUPER(mm_buf); 201} 202 203 204static void 205mm_bufmgr_destroy(struct pb_manager *mgr) 206{ 207 struct mm_pb_manager *mm = mm_pb_manager(mgr); 208 209 _glthread_LOCK_MUTEX(mm->mutex); 210 211 mmDestroy(mm->heap); 212 213 pb_unmap(mm->buffer); 214 pb_reference(&mm->buffer, NULL); 215 216 _glthread_UNLOCK_MUTEX(mm->mutex); 217 218 FREE(mgr); 219} 220 221 222struct pb_manager * 223mm_bufmgr_create_from_buffer(struct pb_buffer *buffer, 224 size_t size, size_t align2) 225{ 226 struct mm_pb_manager *mm; 227 228 if(!buffer) 229 return NULL; 230 231 mm = CALLOC_STRUCT(mm_pb_manager); 232 if (!mm) 233 return NULL; 234 235 mm->base.create_buffer = mm_bufmgr_create_buffer; 236 mm->base.destroy = mm_bufmgr_destroy; 237 238 mm->size = size; 239 mm->align2 = align2; /* 64-byte alignment */ 240 241 _glthread_INIT_MUTEX(mm->mutex); 242 243 mm->buffer = buffer; 244 245 mm->map = pb_map(mm->buffer, 246 PIPE_BUFFER_USAGE_CPU_READ | 247 PIPE_BUFFER_USAGE_CPU_WRITE); 248 if(!mm->map) 249 goto failure; 250 251 mm->heap = mmInit(0, size); 252 if (!mm->heap) 253 goto failure; 254 255 return SUPER(mm); 256 257failure: 258if(mm->heap) 259 mmDestroy(mm->heap); 260 if(mm->map) 261 pb_unmap(mm->buffer); 262 if(mm) 263 FREE(mm); 264 return NULL; 265} 266 267 268struct pb_manager * 269mm_bufmgr_create(struct pb_manager *provider, 270 size_t size, size_t align2) 271{ 272 struct pb_buffer *buffer; 273 struct pb_manager *mgr; 274 struct pb_desc desc; 275 276 assert(provider); 277 assert(provider->create_buffer); 278 279 memset(&desc, 0, sizeof(desc)); 280 desc.alignment = 1 << align2; 281 282 buffer = provider->create_buffer(provider, size, &desc); 283 if (!buffer) 284 return NULL; 285 286 mgr = mm_bufmgr_create_from_buffer(buffer, size, align2); 287 if (!mgr) { 288 pb_reference(&buffer, NULL); 289 return NULL; 290 } 291 292 return mgr; 293} 294