1 /**************************************************************************
3 * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
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:
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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19 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
20 * USE OR OTHER DEALINGS IN THE SOFTWARE.
22 * The above copyright notice and this permission notice (including the
23 * next paragraph) shall be included in all copies or substantial portions
27 **************************************************************************/
31 * Batch buffer pool management.
33 * \author Jose Fonseca <jrfonseca-at-tungstengraphics-dot-com>
34 * \author Thomas Hellström <thomas-at-tungstengraphics-dot-com>
38 #include "pipe/p_compiler.h"
39 #include "util/u_debug.h"
40 #include "os/os_thread.h"
41 #include "pipe/p_defines.h"
42 #include "util/u_memory.h"
43 #include "util/u_double_list.h"
45 #include "pb_buffer.h"
46 #include "pb_bufmgr.h"
50 * Convenience macro (type safe).
52 #define SUPER(__derived) (&(__derived)->base)
55 struct pool_pb_manager
57 struct pb_manager base;
67 struct list_head free;
69 struct pb_buffer *buffer;
72 struct pool_buffer *bufs;
76 static INLINE struct pool_pb_manager *
77 pool_pb_manager(struct pb_manager *mgr)
80 return (struct pool_pb_manager *)mgr;
86 struct pb_buffer base;
88 struct pool_pb_manager *mgr;
90 struct list_head head;
96 static INLINE struct pool_buffer *
97 pool_buffer(struct pb_buffer *buf)
100 return (struct pool_buffer *)buf;
106 pool_buffer_destroy(struct pb_buffer *buf)
108 struct pool_buffer *pool_buf = pool_buffer(buf);
109 struct pool_pb_manager *pool = pool_buf->mgr;
111 assert(!pipe_is_referenced(&pool_buf->base.base.reference));
113 pipe_mutex_lock(pool->mutex);
114 LIST_ADD(&pool_buf->head, &pool->free);
116 pipe_mutex_unlock(pool->mutex);
121 pool_buffer_map(struct pb_buffer *buf, unsigned flags)
123 struct pool_buffer *pool_buf = pool_buffer(buf);
124 struct pool_pb_manager *pool = pool_buf->mgr;
127 pipe_mutex_lock(pool->mutex);
128 map = (unsigned char *) pool->map + pool_buf->start;
129 pipe_mutex_unlock(pool->mutex);
135 pool_buffer_unmap(struct pb_buffer *buf)
141 static enum pipe_error
142 pool_buffer_validate(struct pb_buffer *buf,
143 struct pb_validate *vl,
146 struct pool_buffer *pool_buf = pool_buffer(buf);
147 struct pool_pb_manager *pool = pool_buf->mgr;
148 return pb_validate(pool->buffer, vl, flags);
153 pool_buffer_fence(struct pb_buffer *buf,
154 struct pipe_fence_handle *fence)
156 struct pool_buffer *pool_buf = pool_buffer(buf);
157 struct pool_pb_manager *pool = pool_buf->mgr;
158 pb_fence(pool->buffer, fence);
163 pool_buffer_get_base_buffer(struct pb_buffer *buf,
164 struct pb_buffer **base_buf,
167 struct pool_buffer *pool_buf = pool_buffer(buf);
168 struct pool_pb_manager *pool = pool_buf->mgr;
169 pb_get_base_buffer(pool->buffer, base_buf, offset);
170 *offset += pool_buf->start;
174 static const struct pb_vtbl
179 pool_buffer_validate,
181 pool_buffer_get_base_buffer
185 static struct pb_buffer *
186 pool_bufmgr_create_buffer(struct pb_manager *mgr,
188 const struct pb_desc *desc)
190 struct pool_pb_manager *pool = pool_pb_manager(mgr);
191 struct pool_buffer *pool_buf;
192 struct list_head *item;
194 assert(size == pool->bufSize);
195 assert(pool->bufAlign % desc->alignment == 0);
197 pipe_mutex_lock(pool->mutex);
199 if (pool->numFree == 0) {
200 pipe_mutex_unlock(pool->mutex);
201 debug_printf("warning: out of fixed size buffer objects\n");
205 item = pool->free.next;
207 if (item == &pool->free) {
208 pipe_mutex_unlock(pool->mutex);
209 debug_printf("error: fixed size buffer pool corruption\n");
216 pipe_mutex_unlock(pool->mutex);
218 pool_buf = LIST_ENTRY(struct pool_buffer, item, head);
219 assert(!pipe_is_referenced(&pool_buf->base.base.reference));
220 pipe_reference_init(&pool_buf->base.base.reference, 1);
221 pool_buf->base.base.alignment = desc->alignment;
222 pool_buf->base.base.usage = desc->usage;
224 return SUPER(pool_buf);
229 pool_bufmgr_flush(struct pb_manager *mgr)
236 pool_bufmgr_destroy(struct pb_manager *mgr)
238 struct pool_pb_manager *pool = pool_pb_manager(mgr);
239 pipe_mutex_lock(pool->mutex);
243 pb_unmap(pool->buffer);
244 pb_reference(&pool->buffer, NULL);
246 pipe_mutex_unlock(pool->mutex);
253 pool_bufmgr_create(struct pb_manager *provider,
256 const struct pb_desc *desc)
258 struct pool_pb_manager *pool;
259 struct pool_buffer *pool_buf;
265 pool = CALLOC_STRUCT(pool_pb_manager);
269 pool->base.destroy = pool_bufmgr_destroy;
270 pool->base.create_buffer = pool_bufmgr_create_buffer;
271 pool->base.flush = pool_bufmgr_flush;
273 LIST_INITHEAD(&pool->free);
275 pool->numTot = numBufs;
276 pool->numFree = numBufs;
277 pool->bufSize = bufSize;
278 pool->bufAlign = desc->alignment;
280 pipe_mutex_init(pool->mutex);
282 pool->buffer = provider->create_buffer(provider, numBufs*bufSize, desc);
286 pool->map = pb_map(pool->buffer,
287 PIPE_BUFFER_USAGE_CPU_READ |
288 PIPE_BUFFER_USAGE_CPU_WRITE);
292 pool->bufs = (struct pool_buffer *)CALLOC(numBufs, sizeof(*pool->bufs));
296 pool_buf = pool->bufs;
297 for (i = 0; i < numBufs; ++i) {
298 pipe_reference_init(&pool_buf->base.base.reference, 0);
299 pool_buf->base.base.alignment = 0;
300 pool_buf->base.base.usage = 0;
301 pool_buf->base.base.size = bufSize;
302 pool_buf->base.vtbl = &pool_buffer_vtbl;
303 pool_buf->mgr = pool;
304 pool_buf->start = i * bufSize;
305 LIST_ADDTAIL(&pool_buf->head, &pool->free);
315 pb_unmap(pool->buffer);
317 pb_reference(&pool->buffer, NULL);