repositories / deb_android-headers.git / blame
| Commit | Line | Data |
|---|---|---|
| 1e494cf4 JB |
1 | /* |
| 2 | * Copyright (C) 2007 The Android Open Source Project | |
| 3 | * | |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 5 | * you may not use this file except in compliance with the License. | |
| 6 | * You may obtain a copy of the License at | |
| 7 | * | |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 9 | * | |
| 10 | * Unless required by applicable law or agreed to in writing, software | |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 13 | * See the License for the specific language governing permissions and | |
| 14 | * limitations under the License. | |
| 15 | */ | |
| 16 | ||
| 17 | #ifndef __CUTILS_SCHED_POLICY_H | |
| 18 | #define __CUTILS_SCHED_POLICY_H | |
| 19 | ||
| 20 | #ifdef __cplusplus | |
| 21 | extern "C" { | |
| 22 | #endif | |
| 23 | ||
| 24 | /* Keep in sync with THREAD_GROUP_* in frameworks/base/core/java/android/os/Process.java */ | |
| 25 | typedef enum { | |
| 26 | SP_DEFAULT = -1, | |
| 27 | SP_BACKGROUND = 0, | |
| 28 | SP_FOREGROUND = 1, | |
| 29 | SP_SYSTEM = 2, // can't be used with set_sched_policy() | |
| 30 | SP_AUDIO_APP = 3, | |
| 31 | SP_AUDIO_SYS = 4, | |
| 32 | SP_CNT, | |
| 33 | SP_MAX = SP_CNT - 1, | |
| 34 | SP_SYSTEM_DEFAULT = SP_FOREGROUND, | |
| 35 | } SchedPolicy; | |
| 36 | ||
| 37 | /* Assign thread tid to the cgroup associated with the specified policy. | |
| 38 | * If the thread is a thread group leader, that is it's gettid() == getpid(), | |
| 39 | * then the other threads in the same thread group are _not_ affected. | |
| 40 | * On platforms which support gettid(), zero tid means current thread. | |
| 41 | * Return value: 0 for success, or -errno for error. | |
| 42 | */ | |
| 43 | extern int set_sched_policy(int tid, SchedPolicy policy); | |
| 44 | ||
| 45 | /* Return the policy associated with the cgroup of thread tid via policy pointer. | |
| 46 | * On platforms which support gettid(), zero tid means current thread. | |
| 47 | * Return value: 0 for success, or -1 for error and set errno. | |
| 48 | */ | |
| 49 | extern int get_sched_policy(int tid, SchedPolicy *policy); | |
| 50 | ||
| 51 | /* Return a displayable string corresponding to policy. | |
| 52 | * Return value: non-NULL NUL-terminated name of unspecified length; | |
| 53 | * the caller is responsible for displaying the useful part of the string. | |
| 54 | */ | |
| 55 | extern const char *get_sched_policy_name(SchedPolicy policy); | |
| 56 | ||
| 57 | #ifdef __cplusplus | |
| 58 | } | |
| 59 | #endif | |
| 60 | ||
| 61 | #endif /* __CUTILS_SCHED_POLICY_H */ |