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 * A buffer manager that wraps buffers in fenced buffers.
33 * \author Jose Fonseca <jrfonseca@tungstengraphics.dot.com>
37 #include "pipe/p_debug.h"
38 #include "util/u_memory.h"
40 #include "pb_buffer.h"
41 #include "pb_buffer_fenced.h"
42 #include "pb_bufmgr.h"
45 struct fenced_pb_manager
47 struct pb_manager base;
49 struct pb_manager *provider;
51 struct fenced_buffer_list *fenced_list;
55 static INLINE struct fenced_pb_manager *
56 fenced_pb_manager(struct pb_manager *mgr)
59 return (struct fenced_pb_manager *)mgr;
63 static struct pb_buffer *
64 fenced_bufmgr_create_buffer(struct pb_manager *mgr,
66 const struct pb_desc *desc)
68 struct fenced_pb_manager *fenced_mgr = fenced_pb_manager(mgr);
69 struct pb_buffer *buf;
70 struct pb_buffer *fenced_buf;
72 /* check for free buffers before allocating new ones */
73 fenced_buffer_list_check_free(fenced_mgr->fenced_list, 0);
75 buf = fenced_mgr->provider->create_buffer(fenced_mgr->provider, size, desc);
77 /* try harder to get a buffer */
78 fenced_buffer_list_check_free(fenced_mgr->fenced_list, 1);
80 buf = fenced_mgr->provider->create_buffer(fenced_mgr->provider, size, desc);
87 fenced_buf = fenced_buffer_create(fenced_mgr->fenced_list, buf);
89 pb_reference(&buf, NULL);
97 fenced_bufmgr_flush(struct pb_manager *mgr)
99 struct fenced_pb_manager *fenced_mgr = fenced_pb_manager(mgr);
101 fenced_buffer_list_check_free(fenced_mgr->fenced_list, TRUE);
103 assert(fenced_mgr->provider->flush);
104 if(fenced_mgr->provider->flush)
105 fenced_mgr->provider->flush(fenced_mgr->provider);
110 fenced_bufmgr_destroy(struct pb_manager *mgr)
112 struct fenced_pb_manager *fenced_mgr = fenced_pb_manager(mgr);
114 fenced_buffer_list_destroy(fenced_mgr->fenced_list);
116 if(fenced_mgr->provider)
117 fenced_mgr->provider->destroy(fenced_mgr->provider);
124 fenced_bufmgr_create(struct pb_manager *provider,
125 struct pipe_winsys *winsys)
127 struct fenced_pb_manager *fenced_mgr;
132 fenced_mgr = CALLOC_STRUCT(fenced_pb_manager);
136 fenced_mgr->base.destroy = fenced_bufmgr_destroy;
137 fenced_mgr->base.create_buffer = fenced_bufmgr_create_buffer;
138 fenced_mgr->base.flush = fenced_bufmgr_flush;
140 fenced_mgr->provider = provider;
141 fenced_mgr->fenced_list = fenced_buffer_list_create(winsys);
142 if(!fenced_mgr->fenced_list) {
147 return &fenced_mgr->base;