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Justine Tunney 2020-06-15 07:18:57 -07:00
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libc/calls/getpriority-nt.c Normal file
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ This program is free software; you can redistribute it and/or modify │
│ it under the terms of the GNU General Public License as published by │
│ the Free Software Foundation; version 2 of the License. │
│ │
│ This program is distributed in the hope that it will be useful, but │
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
│ General Public License for more details. │
│ │
│ You should have received a copy of the GNU General Public License │
│ along with this program; if not, write to the Free Software │
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/bits/bits.h"
#include "libc/calls/calls.h"
#include "libc/calls/internal.h"
#include "libc/calls/kntprioritycombos.h"
#include "libc/conv/conv.h"
#include "libc/nt/enum/processcreationflags.h"
#include "libc/nt/enum/threadpriority.h"
#include "libc/nt/process.h"
#include "libc/nt/runtime.h"
#include "libc/nt/thread.h"
#include "libc/runtime/runtime.h"
#include "libc/sysv/consts/prio.h"
#include "libc/sysv/errfuns.h"
textwindows int getpriority$nt(int ignored) {
size_t i;
uint32_t tier, lg2tier, wut;
if ((tier = GetPriorityClass(GetCurrentProcess())) != 0 &&
(wut = GetThreadPriority(GetCurrentThread())) != -1u) {
lg2tier = ffs(tier);
for (i = 0; i < kNtPriorityCombosLen; ++i) {
if (kNtPriorityCombos[i].lg2tier == lg2tier &&
kNtPriorityCombos[i].wut == wut) {
return kNtPriorityCombos[i].nice;
}
}
abort();
} else {
return winerr();
}
}