54 lines
2.7 KiB
C
54 lines
2.7 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 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/bits/safemacros.internal.h"
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#include "libc/calls/internal.h"
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#include "libc/calls/kntprioritycombos.internal.h"
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#include "libc/nt/process.h"
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#include "libc/nt/runtime.h"
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#include "libc/nt/thread.h"
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static textwindows struct NtPriorityCombo findntprio(int nice) {
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size_t l, r, m;
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l = 0;
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r = kNtPriorityCombosLen;
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while (l < r) {
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m = (l + r) >> 1;
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if (kNtPriorityCombos[m].nice > nice) {
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r = m;
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} else {
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l = m + 1;
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}
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}
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return kNtPriorityCombos[max(0, l - 1)];
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}
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textwindows int setpriority$nt(int nice) {
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uint32_t tier;
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struct NtPriorityCombo p;
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p = findntprio(nice);
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tier = 1 << (p.lg2tier - 1);
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if (SetPriorityClass(GetCurrentProcess(), tier) &&
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SetThreadPriority(GetCurrentThread(), p.wut)) {
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return p.nice;
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} else {
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return __winerr();
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}
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}
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