pb_bufmgr_mm.c revision 23d340c9edbbe64a99478b922c008ae3e2ec7103
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 "pipe/p_defines.h" 37#include "pipe/p_debug.h" 38#include "pipe/p_thread.h" 39#include "pipe/p_util.h" 40#include "util/u_double_list.h" 41#include "util/u_mm.h" 42#include "pb_buffer.h" 43#include "pb_bufmgr.h" 44 45 46/** 47 * Convenience macro (type safe). 48 */ 49#define SUPER(__derived) (&(__derived)->base) 50 51 52struct mm_pb_manager 53{ 54 struct pb_manager base; 55 56 _glthread_Mutex mutex; 57 58 size_t size; 59 struct mem_block *heap; 60 61 size_t align2; 62 63 struct pb_buffer *buffer; 64 void *map; 65}; 66 67 68static INLINE struct mm_pb_manager * 69mm_pb_manager(struct pb_manager *mgr) 70{ 71 assert(mgr); 72 return (struct mm_pb_manager *)mgr; 73} 74 75 76struct mm_buffer 77{ 78 struct pb_buffer base; 79 80 struct mm_pb_manager *mgr; 81 82 struct mem_block *block; 83}; 84 85 86static INLINE struct mm_buffer * 87mm_buffer(struct pb_buffer *buf) 88{ 89 assert(buf); 90 return (struct mm_buffer *)buf; 91} 92 93 94static void 95mm_buffer_destroy(struct pb_buffer *buf) 96{ 97 struct mm_buffer *mm_buf = mm_buffer(buf); 98 struct mm_pb_manager *mm = mm_buf->mgr; 99 100 assert(buf->base.refcount == 0); 101 102 _glthread_LOCK_MUTEX(mm->mutex); 103 mmFreeMem(mm_buf->block); 104 FREE(buf); 105 _glthread_UNLOCK_MUTEX(mm->mutex); 106} 107 108 109static void * 110mm_buffer_map(struct pb_buffer *buf, 111 unsigned flags) 112{ 113 struct mm_buffer *mm_buf = mm_buffer(buf); 114 struct mm_pb_manager *mm = mm_buf->mgr; 115 116 return (unsigned char *) mm->map + mm_buf->block->ofs; 117} 118 119 120static void 121mm_buffer_unmap(struct pb_buffer *buf) 122{ 123 /* No-op */ 124} 125 126 127static void 128mm_buffer_get_base_buffer(struct pb_buffer *buf, 129 struct pb_buffer **base_buf, 130 unsigned *offset) 131{ 132 struct mm_buffer *mm_buf = mm_buffer(buf); 133 struct mm_pb_manager *mm = mm_buf->mgr; 134 pb_get_base_buffer(mm->buffer, base_buf, offset); 135 *offset += mm_buf->block->ofs; 136} 137 138 139static const struct pb_vtbl 140mm_buffer_vtbl = { 141 mm_buffer_destroy, 142 mm_buffer_map, 143 mm_buffer_unmap, 144 mm_buffer_get_base_buffer 145}; 146 147 148static struct pb_buffer * 149mm_bufmgr_create_buffer(struct pb_manager *mgr, 150 size_t size, 151 const struct pb_desc *desc) 152{ 153 struct mm_pb_manager *mm = mm_pb_manager(mgr); 154 struct mm_buffer *mm_buf; 155 156 /* We don't handle alignments larger then the one initially setup */ 157 assert(desc->alignment % (1 << mm->align2) == 0); 158 if(desc->alignment % (1 << mm->align2)) 159 return NULL; 160 161 _glthread_LOCK_MUTEX(mm->mutex); 162 163 mm_buf = CALLOC_STRUCT(mm_buffer); 164 if (!mm_buf) { 165 _glthread_UNLOCK_MUTEX(mm->mutex); 166 return NULL; 167 } 168 169 mm_buf->base.base.refcount = 1; 170 mm_buf->base.base.alignment = desc->alignment; 171 mm_buf->base.base.usage = desc->usage; 172 mm_buf->base.base.size = size; 173 174 mm_buf->base.vtbl = &mm_buffer_vtbl; 175 176 mm_buf->mgr = mm; 177 178 mm_buf->block = mmAllocMem(mm->heap, size, mm->align2, 0); 179 if(!mm_buf->block) { 180 debug_printf("warning: heap full\n"); 181#if 0 182 mmDumpMemInfo(mm->heap); 183#endif 184 185 mm_buf->block = mmAllocMem(mm->heap, size, mm->align2, 0); 186 if(!mm_buf->block) { 187 FREE(mm_buf); 188 _glthread_UNLOCK_MUTEX(mm->mutex); 189 return NULL; 190 } 191 } 192 193 /* Some sanity checks */ 194 assert(0 <= (unsigned)mm_buf->block->ofs && (unsigned)mm_buf->block->ofs < mm->size); 195 assert(size <= (unsigned)mm_buf->block->size && (unsigned)mm_buf->block->ofs + (unsigned)mm_buf->block->size <= mm->size); 196 197 _glthread_UNLOCK_MUTEX(mm->mutex); 198 return SUPER(mm_buf); 199} 200 201 202static void 203mm_bufmgr_destroy(struct pb_manager *mgr) 204{ 205 struct mm_pb_manager *mm = mm_pb_manager(mgr); 206 207 _glthread_LOCK_MUTEX(mm->mutex); 208 209 mmDestroy(mm->heap); 210 211 pb_unmap(mm->buffer); 212 pb_reference(&mm->buffer, NULL); 213 214 _glthread_UNLOCK_MUTEX(mm->mutex); 215 216 FREE(mgr); 217} 218 219 220struct pb_manager * 221mm_bufmgr_create_from_buffer(struct pb_buffer *buffer, 222 size_t size, size_t align2) 223{ 224 struct mm_pb_manager *mm; 225 226 if(!buffer) 227 return NULL; 228 229 mm = CALLOC_STRUCT(mm_pb_manager); 230 if (!mm) 231 return NULL; 232 233 mm->base.create_buffer = mm_bufmgr_create_buffer; 234 mm->base.destroy = mm_bufmgr_destroy; 235 236 mm->size = size; 237 mm->align2 = align2; /* 64-byte alignment */ 238 239 _glthread_INIT_MUTEX(mm->mutex); 240 241 mm->buffer = buffer; 242 243 mm->map = pb_map(mm->buffer, 244 PIPE_BUFFER_USAGE_CPU_READ | 245 PIPE_BUFFER_USAGE_CPU_WRITE); 246 if(!mm->map) 247 goto failure; 248 249 mm->heap = mmInit(0, size); 250 if (!mm->heap) 251 goto failure; 252 253 return SUPER(mm); 254 255failure: 256if(mm->heap) 257 mmDestroy(mm->heap); 258 if(mm->map) 259 pb_unmap(mm->buffer); 260 if(mm) 261 FREE(mm); 262 return NULL; 263} 264 265 266struct pb_manager * 267mm_bufmgr_create(struct pb_manager *provider, 268 size_t size, size_t align2) 269{ 270 struct pb_buffer *buffer; 271 struct pb_manager *mgr; 272 struct pb_desc desc; 273 274 assert(provider); 275 assert(provider->create_buffer); 276 277 memset(&desc, 0, sizeof(desc)); 278 desc.alignment = 1 << align2; 279 280 buffer = provider->create_buffer(provider, size, &desc); 281 if (!buffer) 282 return NULL; 283 284 mgr = mm_bufmgr_create_from_buffer(buffer, size, align2); 285 if (!mgr) { 286 pb_reference(&buffer, NULL); 287 return NULL; 288 } 289 290 return mgr; 291} 292