mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 03:53:33 +00:00
c7a8cd21e9
This change improves copy_file_range(), sendfile(), splice(), openpty(), closefrom(), close_range(), fadvise() and posix_fadvise() in addition to writing tests that confirm things like errno and seeking behavior across platforms. We now less aggressively polyfill behavior with some of these functions when the platform support isn't available. Please see: https://justine.lol/cosmopolitan/functions.html
53 lines
2.9 KiB
C
53 lines
2.9 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/assert.h"
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#include "libc/errno.h"
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#include "libc/thread/thread.h"
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/**
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* Sets thread scheduler inheritance attribute, e.g.
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*
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* pthread_t id;
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* pthread_attr_t attr;
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* pthread_attr_init(&attr);
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* struct sched_param pri = {sched_get_priority_min(SCHED_OTHER)};
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* pthread_attr_setinheritsched(&attr, PTHREAD_EXPLICIT_SCHED);
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* pthread_attr_setschedpolicy(&attr, SCHED_OTHER);
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* pthread_attr_setschedparam(&attr, &pri);
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* pthread_create(&id, &attr, func, 0);
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* pthread_attr_destroy(&attr);
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* pthread_join(id, 0);
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*
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* @param inheritsched may be one of:
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* - `PTHREAD_INHERIT_SCHED` the default
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* - `PTHREAD_EXPLICIT_SCHED` to enable rescheduling
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* @return 0 on success, or errno on error
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* @raise EINVAL on bad value
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*/
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errno_t pthread_attr_setinheritsched(pthread_attr_t *attr, int inheritsched) {
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switch (inheritsched) {
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case PTHREAD_INHERIT_SCHED:
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case PTHREAD_EXPLICIT_SCHED:
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attr->inheritsched = inheritsched;
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return 0;
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default:
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assert(!"badval");
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return EINVAL;
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}
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}
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