42 lines
2.6 KiB
C
42 lines
2.6 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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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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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/wait4.h"
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#include "libc/dce.h"
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/**
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* Waits for status to change on process.
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*
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* @param pid >0 targets specific process, =0 means any proc in a group,
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* -1 means any child process, <-1 means any proc in specific group
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* @param opt_out_wstatus optionally returns status code, and *wstatus
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* may be inspected using WEXITSTATUS(), etc.
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* @param options can have WNOHANG, WUNTRACED, WCONTINUED, etc.
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* @return process id of terminated child or -1 w/ errno
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* @asyncsignalsafe
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*/
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int waitpid(int pid, int *opt_out_wstatus, int options) {
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if (!IsWindows()) {
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return wait4$sysv(pid, opt_out_wstatus, options, NULL);
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} else {
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return wait4$nt(pid, opt_out_wstatus, options, NULL);
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}
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}
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