mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 11:37:35 +00:00
71 lines
3 KiB
C
71 lines
3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│ vi: set et 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/calls/syscall-nt.internal.h"
|
|
#include "libc/intrin/strace.h"
|
|
#include "libc/nt/enum/processcreationflags.h"
|
|
#include "libc/nt/errors.h"
|
|
#include "libc/nt/process.h"
|
|
#include "libc/nt/runtime.h"
|
|
#include "libc/proc/proc.internal.h"
|
|
#include "libc/sysv/consts/prio.h"
|
|
#include "libc/sysv/errfuns.h"
|
|
|
|
textwindows int sys_getpriority_nt(int which, unsigned pid) {
|
|
|
|
if (which != PRIO_PROCESS) {
|
|
return einval();
|
|
}
|
|
|
|
int64_t handle;
|
|
if (!(handle = __proc_handle(pid))) {
|
|
return esrch();
|
|
}
|
|
|
|
uint32_t tier;
|
|
switch ((tier = GetPriorityClass(handle))) {
|
|
case kNtRealtimePriorityClass:
|
|
return -16;
|
|
break;
|
|
case kNtHighPriorityClass:
|
|
return -10;
|
|
break;
|
|
case kNtAboveNormalPriorityClass:
|
|
return -5;
|
|
break;
|
|
case kNtNormalPriorityClass:
|
|
return 0;
|
|
break;
|
|
case kNtBelowNormalPriorityClass:
|
|
return 5;
|
|
break;
|
|
case kNtIdlePriorityClass:
|
|
return 15;
|
|
break;
|
|
case 0:
|
|
STRACE("GetPriorityClass() failed with %d", GetLastError());
|
|
if (GetLastError() == kNtErrorInvalidHandle) {
|
|
return esrch();
|
|
} else {
|
|
return eperm();
|
|
}
|
|
default:
|
|
STRACE("unknown win32 priority class %d", tier);
|
|
return 0;
|
|
}
|
|
}
|