platform_bionic/libc/bionic/pthread_setschedparam.cpp
Elliott Hughes dff08ced56 Add pthread_setschedprio.
Bug: http://b/26204555
Test: ran tests
Change-Id: Ic34062b9b6036a1ce2642a069514bab48a893338
2017-10-17 09:14:05 -07:00

52 lines
2 KiB
C++

/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <errno.h>
#include <pthread.h>
#include <sched.h>
#include "private/ErrnoRestorer.h"
int pthread_setschedparam(pthread_t t, int policy, const sched_param* param) {
ErrnoRestorer errno_restorer;
pid_t tid = pthread_gettid_np(t);
if (tid == -1) return ESRCH;
return (sched_setscheduler(tid, policy, param) == -1) ? errno : 0;
}
int pthread_setschedprio(pthread_t t, int priority) {
ErrnoRestorer errno_restorer;
pid_t tid = pthread_gettid_np(t);
if (tid == -1) return ESRCH;
sched_param param = { .sched_priority = priority };
return (sched_setparam(tid, &param) == -1) ? errno : 0;
}