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155b378a39
The organization of the source files is now much more rational. Old experiments that didn't work out are now deleted. Naming of things like files is now more intuitive.
51 lines
3.1 KiB
C
51 lines
3.1 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2022 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/errno.h"
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#include "libc/thread/posixthread.internal.h"
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#include "libc/thread/thread2.h"
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/**
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* Changes scheduling of thread, e.g.
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*
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* struct sched_param p = {sched_get_priority_min(SCHED_OTHER)};
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* pthread_setschedparam(thread, SCHED_OTHER, &p);
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*
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* @param policy may be one of:
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* - `SCHED_OTHER` the default policy
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* - `SCHED_FIFO` for real-time scheduling (usually needs root)
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* - `SCHED_RR` for round-robin scheduling (usually needs root)
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* - `SCHED_IDLE` for lowest effort (Linux and FreeBSD only)
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* - `SCHED_BATCH` for "batch" style execution of processes if
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* supported (Linux), otherwise it's treated as `SCHED_OTHER`
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* @raise ENOSYS on XNU, Windows, OpenBSD
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* @raise EPERM if not authorized to use scheduler in question (e.g.
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* trying to use a real-time scheduler as non-root on Linux) or
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* possibly because pledge() was used and isn't allowing this
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* @see sched_get_priority_min()
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* @see sched_get_priority_max()
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* @see sched_setscheduler()
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*/
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int pthread_setschedparam(pthread_t thread, int policy,
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const struct sched_param *param) {
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struct PosixThread *pt = (struct PosixThread *)thread;
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if (!param) return EINVAL;
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pt->attr.schedpolicy = policy;
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pt->attr.schedparam = param->sched_priority;
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return _pthread_reschedule(pt);
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}
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