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e16a7d8f3b
`et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
57 lines
3.2 KiB
C
57 lines
3.2 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 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/calls/calls.h"
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#include "libc/calls/syscall-nt.internal.h"
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#include "libc/calls/syscall-sysv.internal.h"
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#include "libc/dce.h"
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#include "libc/intrin/describeflags.internal.h"
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#include "libc/intrin/strace.internal.h"
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/**
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* Sets nice value of thing.
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*
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* On Windows, there's only six priority classes. We define them as -16
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* (realtime), -10 (high), -5 (above), 0 (normal), 5 (below), 15 (idle)
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* which are the only values that'll roundtrip getpriority/setpriority.
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*
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* @param which can be one of:
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* - `PRIO_PROCESS` is supported universally
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* - `PRIO_PGRP` is supported on unix
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* - `PRIO_USER` is supported on unix
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* @param who is the pid, pgid, or uid, 0 meaning current
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* @param value ∈ [-NZERO,NZERO) which is clamped automatically
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* @return 0 on success, or -1 w/ errno
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* @raise EINVAL if `which` was invalid or unsupported
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* @error EACCES if `value` lower that `RLIMIT_NICE`
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* @error EACCES on Linux without `CAP_SYS_NICE`
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* @raise EPERM if access to process was denied
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* @raise ESRCH if the process didn't exist
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* @see getpriority()
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*/
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int setpriority(int which, unsigned who, int value) {
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int rc;
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if (!IsWindows()) {
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rc = sys_setpriority(which, who, value);
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} else {
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rc = sys_setpriority_nt(which, who, value);
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}
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STRACE("setpriority(%s, %u, %d) → %d% m", DescribeWhichPrio(which), who,
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value, rc);
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return rc;
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}
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