sync.h revision 3be33e46187bfb1e42099bb4ba061a494356576c 
1/*
2 *  sync.h
3 *
4 *   Copyright 2012 Google, Inc
5 *
6 *  Licensed under the Apache License, Version 2.0 (the "License");
7 *  you may not use this file except in compliance with the License.
8 *  You may obtain a copy of the License at
9 *
10 *      http://www.apache.org/licenses/LICENSE-2.0
11 *
12 *  Unless required by applicable law or agreed to in writing, software
13 *  distributed under the License is distributed on an "AS IS" BASIS,
14 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 *  See the License for the specific language governing permissions and
16 *  limitations under the License.
17 */
18
19#ifndef __SYS_CORE_SYNC_H
20#define __SYS_CORE_SYNC_H
21
22#include <sys/cdefs.h>
23#include <stdint.h>
24
25__BEGIN_DECLS
26
27// XXX: These structs are copied from the header "linux/sync.h".
28struct sync_fence_info_data {
29 uint32_t len;
30 char name[32];
31 int32_t status;
32 uint8_t pt_info[0];
33};
34
35struct sync_pt_info {
36 uint32_t len;
37 char obj_name[32];
38 char driver_name[32];
39 int32_t status;
40 uint64_t timestamp_ns;
41 uint8_t driver_data[0];
42};
43
44/* timeout in msecs */
45int sync_wait(int fd, unsigned int timeout);
46int sync_merge(const char *name, int fd1, int fd2);
47struct sync_fence_info_data *sync_fence_info(int fd);
48struct sync_pt_info *sync_pt_info(struct sync_fence_info_data *info,
49                                  struct sync_pt_info *itr);
50void sync_fence_info_free(struct sync_fence_info_data *info);
51
52/* sw_sync is mainly inteded for testing and should not be complied into
53 * production kernels
54 */
55
56int sw_sync_timeline_create(void);
57int sw_sync_timeline_inc(int fd, unsigned count);
58int sw_sync_fence_create(int fd, const char *name, unsigned value);
59
60__END_DECLS
61
62#endif /* __SYS_CORE_SYNC_H */
63