1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
/**
*
* Copyright 2016-2020 Netflix, Inc.
*
* Licensed under the BSD+Patent License (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://opensource.org/licenses/BSDplusPatent
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "ref.h"
int vmaf_ref_init(VmafRef **ref)
{
VmafRef *const r = *ref = malloc(sizeof(*r));
if (!r) return -ENOMEM;
memset(r, 0, sizeof(*r));
atomic_init(&r->cnt, 1);
return 0;
}
void vmaf_ref_fetch_increment(VmafRef *ref)
{
atomic_fetch_add(&ref->cnt, 1);
}
void vmaf_ref_fetch_decrement(VmafRef *ref)
{
atomic_fetch_sub(&ref->cnt, 1);
}
long vmaf_ref_load(VmafRef *ref)
{
return atomic_load(&ref->cnt);
}
int vmaf_ref_close(VmafRef *ref)
{
free(ref);
return 0;
}