86c7cc8189
This will make it easier to add additional policies (cgroups) if needed. Also added comments to the sched_policy APIs. Change-Id: I33ce1cc4deae10983241f7391294b7a512d2c47c
53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __CUTILS_SCHED_POLICY_H
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#define __CUTILS_SCHED_POLICY_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef enum {
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SP_BACKGROUND = 0,
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SP_FOREGROUND = 1,
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SP_CNT,
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SP_MAX = SP_CNT - 1,
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} SchedPolicy;
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/* Assign thread tid to the cgroup associated with the specified policy.
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* If the thread is a thread group leader, that is it's gettid() == getpid(),
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* then the other threads in the same thread group are _not_ affected.
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* Return value: 0 for success, or -errno for error.
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*/
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extern int set_sched_policy(int tid, SchedPolicy policy);
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/* Return the policy associated with the cgroup of thread tid via policy pointer.
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* Return value: 0 for success, or -1 for error and set errno.
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*/
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extern int get_sched_policy(int tid, SchedPolicy *policy);
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/* Return a displayable string corresponding to policy.
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* Return value: non-NULL NUL-terminated name of unspecified length;
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* the caller is responsible for displaying the useful part of the string.
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*/
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extern const char *get_sched_policy_name(SchedPolicy policy);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __CUTILS_SCHED_POLICY_H */
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