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b168057a | 1 | /* Copyright (C) 1991-2015 Free Software Foundation, Inc. |
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2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Lesser General Public | |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Lesser General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Lesser General Public | |
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15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
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17 | |
18 | #include <sys/wait.h> | |
19 | #include <errno.h> | |
20 | #include <sys/resource.h> | |
21 | #include <stddef.h> | |
22 | #include <sysdep-cancel.h> | |
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23 | |
24 | /* Wait for a child to die. When one does, put its status in *STAT_LOC | |
25 | and return its process ID. For errors, return (pid_t) -1. */ | |
0e0deb03 | 26 | pid_t |
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27 | __libc_wait (__WAIT_STATUS_DEFN stat_loc) |
28 | { | |
29 | if (SINGLE_THREAD_P) | |
30 | return INLINE_SYSCALL (wait4, 4, WAIT_ANY, stat_loc, 0, | |
31 | (struct rusage *) NULL); | |
32 | ||
33 | int oldtype = LIBC_CANCEL_ASYNC (); | |
34 | ||
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35 | pid_t result = INLINE_SYSCALL (wait4, 4, WAIT_ANY, stat_loc, 0, |
36 | (struct rusage *) NULL); | |
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37 | |
38 | LIBC_CANCEL_RESET (oldtype); | |
39 | ||
40 | return result; | |
41 | } | |
42 | ||
43 | weak_alias (__libc_wait, __wait) | |
44 | weak_alias (__libc_wait, wait) |