cosmopolitan/libc/calls/getpriority-nt.c

51 lines
2.7 KiB
C

/*-*- 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 │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/bits/bits.h"
#include "libc/calls/calls.h"
#include "libc/calls/internal.h"
#include "libc/calls/kntprioritycombos.internal.h"
#include "libc/fmt/conv.h"
#include "libc/nexgen32e/ffs.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();
}
}