88 lines
4.0 KiB
C
88 lines
4.0 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/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/macros.h"
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#include "libc/nt/accounting.h"
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#include "libc/nt/enum/status.h"
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#include "libc/nt/enum/wait.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/synchronization.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/w.h"
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#include "libc/sysv/errfuns.h"
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textwindows int wait4$nt(int pid, int *opt_out_wstatus, int options,
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struct rusage *opt_out_rusage) {
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int pids[64];
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int64_t handles[64];
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uint32_t dwExitCode;
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uint32_t i, count, timeout;
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struct NtFileTime createfiletime, exitfiletime, kernelfiletime, userfiletime;
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if (pid != -1) {
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if (!__isfdkind(pid, kFdProcess)) {
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return echild();
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}
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handles[0] = g_fds.p[pid].handle;
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pids[0] = pid;
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count = 1;
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} else {
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for (count = 0, i = g_fds.n; i--;) {
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if (g_fds.p[i].kind == kFdProcess) {
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pids[count] = i;
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handles[count] = g_fds.p[i].handle;
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if (++count == ARRAYLEN(handles)) break;
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}
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}
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if (!count) {
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return echild();
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}
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}
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for (;;) {
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dwExitCode = kNtStillActive;
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if (options & WNOHANG) {
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i = WaitForMultipleObjects(count, handles, false, 0);
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if (i == kNtWaitTimeout) return 0;
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} else {
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i = WaitForMultipleObjects(count, handles, false, -1);
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}
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if (i == kNtWaitFailed) return __winerr();
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if (!GetExitCodeProcess(handles[i], &dwExitCode)) return __winerr();
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if (dwExitCode == kNtStillActive) continue;
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if (opt_out_wstatus) { /* @see WEXITSTATUS() */
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*opt_out_wstatus = (dwExitCode & 0xff) << 8;
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}
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if (opt_out_rusage) {
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memset(opt_out_rusage, 0, sizeof(*opt_out_rusage));
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GetProcessTimes(GetCurrentProcess(), &createfiletime, &exitfiletime,
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&kernelfiletime, &userfiletime);
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FileTimeToTimeVal(&opt_out_rusage->ru_utime, userfiletime);
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FileTimeToTimeVal(&opt_out_rusage->ru_stime, kernelfiletime);
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}
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CloseHandle(g_fds.p[pids[i]].handle);
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g_fds.p[pids[i]].kind = kFdEmpty;
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return pids[i];
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}
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}
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