1/*
2 * Copyright (C) 2024 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include "cpu_utils.h"
17
18#include <cerrno>
19#include <sched.h>
20#include <unistd.h>
21
22#include "media_log.h"
23
24namespace OHOS {
25namespace Media {
26void SlowDown()
27{
28    cpu_set_t cpuSet;
29    CPU_ZERO(&cpuSet);
30    for (int cpu = CPU_IDX_0; cpu <= CPU_IDX_6; cpu++) {
31        CPU_SET(cpu, &cpuSet);
32    }
33    if (sched_setaffinity(0, sizeof(cpuSet), &cpuSet) < 0) {
34        MEDIA_ERR_LOG("set thread affinity failed, errno %{public}d", errno);
35    }
36}
37
38void ResetCpu()
39{
40    cpu_set_t cpuSet;
41    CPU_ZERO(&cpuSet);
42
43    if (sched_setaffinity(0, sizeof(cpuSet), &cpuSet) < 0) {
44        MEDIA_ERR_LOG("set thread affinity failed, errno %{public}d", errno);
45        return;
46    }
47}
48} // namespace Media
49} // namespace OHOS
50