1 /*
2  * Copyright © 2011 Red Hat
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice (including the next
12  * paragraph) shall be included in all copies or substantial portions of the
13  * Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21  * IN THE SOFTWARE.
22  *
23  * Authors:
24  *    Jerome Glisse <j.glisse@gmail.com>
25  */
26 #ifndef RBO_H
27 #define RBO_H
28 
29 #include "list.h"
30 
31 struct rbo {
32     struct list_head    list;
33     int                 fd;
34     unsigned            refcount;
35     unsigned            mapcount;
36     unsigned            handle;
37     unsigned            size;
38     unsigned            alignment;
39     void                *data;
40 };
41 
42 struct rbo *rbo(int fd, unsigned handle, unsigned size,
43                 unsigned alignment, void *ptr);
44 int rbo_map(struct rbo *bo);
45 void rbo_unmap(struct rbo *bo);
46 struct rbo *rbo_incref(struct rbo *bo);
47 struct rbo *rbo_decref(struct rbo *bo);
48 int rbo_wait(struct rbo *bo);
49 
50 #endif
51