diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/wait.c')
-rw-r--r-- | nptl/sysdeps/unix/sysv/linux/wait.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/wait.c b/nptl/sysdeps/unix/sysv/linux/wait.c new file mode 100644 index 0000000000..5846075563 --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/wait.c @@ -0,0 +1,52 @@ +/* Copyright (C) 1991, 1995, 1996, 1997, 2002 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <sys/wait.h> +#include <errno.h> +#include <sys/resource.h> +#include <stddef.h> +#include <sysdep.h> +#include <nptl/pthreadP.h> +#include <tls.h> + +/* Wait for a child to die. When one does, put its status in *STAT_LOC + and return its process ID. For errors, return (pid_t) -1. */ +__pid_t +__libc_wait (__WAIT_STATUS_DEFN stat_loc) +{ +#ifndef NOT_IN_libc + if (__builtin_expect (THREAD_GETMEM (THREAD_SELF, + header.data.multiple_threads) == 0, 1)) + return INLINE_SYSCALL (wait4, 4, WAIT_ANY, stat_loc, 0, + (struct rusage *) NULL); + + int oldtype = LIBC_CANCEL_ASYNC (); +#endif + + int result = INLINE_SYSCALL (wait4, 4, WAIT_ANY, stat_loc, 0, + (struct rusage *) NULL); + +#ifndef NOT_IN_libc + LIBC_CANCEL_RESET (oldtype); +#endif + + return result; +} + +weak_alias (__libc_wait, __wait) +weak_alias (__libc_wait, wait) |