66 lines
3.3 KiB
C
66 lines
3.3 KiB
C
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/*-*- 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/calls/calls.h"
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#include "libc/calls/internal.h"
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#include "libc/calls/struct/rusage.h"
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#include "libc/conv/conv.h"
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#include "libc/dce.h"
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#include "libc/nt/accounting.h"
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#include "libc/nt/runtime.h"
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#include "libc/nt/struct/filetime.h"
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#include "libc/nt/thread.h"
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#include "libc/runtime/runtime.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/rusage.h"
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#include "libc/sysv/errfuns.h"
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static textwindows noinline int getrusage$nt(int who, struct rusage *usage) {
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struct NtFileTime CreationFileTime;
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struct NtFileTime ExitFileTime;
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struct NtFileTime KernelFileTime;
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struct NtFileTime UserFileTime;
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memset(usage, 0, sizeof(*usage));
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if ((who == RUSAGE_SELF ? GetProcessTimes : GetThreadTimes)(
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(who == RUSAGE_SELF ? GetCurrentProcess : GetCurrentThread)(),
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&CreationFileTime, &ExitFileTime, &KernelFileTime, &UserFileTime)) {
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filetimetotimeval(&usage->ru_utime, UserFileTime);
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filetimetotimeval(&usage->ru_stime, KernelFileTime);
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return 0;
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} else {
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return winerr();
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}
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}
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/**
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* Returns resource usage statistics.
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*
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* @param who can be RUSAGE_{SELF,CHILDREN,THREAD}
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* @return 0 on success, or -1 w/ errno
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*/
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int getrusage(int who, struct rusage *usage) {
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if (who == 99) return enosys(); /* @see libc/sysv/consts.sh */
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if (!usage) return efault();
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if (!IsWindows()) {
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return getrusage$sysv(who, usage);
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} else {
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return getrusage$nt(who, usage);
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}
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}
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