1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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 above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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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.
26 **************************************************************************/
30 * Implementation of malloc-based buffers to store data that can't be processed
33 * \author Jose Fonseca <jrfonseca@tungstengraphics.com>
37 #include "util/u_debug.h"
38 #include "util/u_memory.h"
39 #include "pb_buffer.h"
40 #include "pb_bufmgr.h"
45 struct pb_buffer base;
50 extern const struct pb_vtbl malloc_buffer_vtbl;
52 static INLINE struct malloc_buffer *
53 malloc_buffer(struct pb_buffer *buf)
58 assert(buf->vtbl == &malloc_buffer_vtbl);
59 return (struct malloc_buffer *)buf;
64 malloc_buffer_destroy(struct pb_buffer *buf)
66 align_free(malloc_buffer(buf)->data);
72 malloc_buffer_map(struct pb_buffer *buf,
75 return malloc_buffer(buf)->data;
80 malloc_buffer_unmap(struct pb_buffer *buf)
86 static enum pipe_error
87 malloc_buffer_validate(struct pb_buffer *buf,
88 struct pb_validate *vl,
97 malloc_buffer_fence(struct pb_buffer *buf,
98 struct pipe_fence_handle *fence)
105 malloc_buffer_get_base_buffer(struct pb_buffer *buf,
106 struct pb_buffer **base_buf,
115 malloc_buffer_vtbl = {
116 malloc_buffer_destroy,
119 malloc_buffer_validate,
121 malloc_buffer_get_base_buffer
126 pb_malloc_buffer_create(pb_size size,
127 const struct pb_desc *desc)
129 struct malloc_buffer *buf;
131 /* TODO: do a single allocation */
133 buf = CALLOC_STRUCT(malloc_buffer);
137 pipe_reference_init(&buf->base.base.reference, 1);
138 buf->base.base.alignment = desc->alignment;
139 buf->base.base.usage = desc->usage;
140 buf->base.base.size = size;
141 buf->base.vtbl = &malloc_buffer_vtbl;
143 buf->data = align_malloc(size, desc->alignment < sizeof(void*) ? sizeof(void*) : desc->alignment);
153 static struct pb_buffer *
154 pb_malloc_bufmgr_create_buffer(struct pb_manager *mgr,
156 const struct pb_desc *desc)
158 return pb_malloc_buffer_create(size, desc);
163 pb_malloc_bufmgr_flush(struct pb_manager *mgr)
170 pb_malloc_bufmgr_destroy(struct pb_manager *mgr)
176 static struct pb_manager
178 pb_malloc_bufmgr_destroy,
179 pb_malloc_bufmgr_create_buffer,
180 pb_malloc_bufmgr_flush
185 pb_malloc_bufmgr_create(void)
187 return &pb_malloc_bufmgr;