| /* vi: set sw=4 ts=4: */ |
| /* |
| * pause() for uClibc |
| * |
| * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> |
| * |
| * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. |
| */ |
| |
| #define __UCLIBC_HIDE_DEPRECATED__ |
| #include <sys/syscall.h> |
| #include <unistd.h> |
| |
| #ifdef __UCLIBC_HAS_THREADS_NATIVE__ |
| #include <sysdep-cancel.h> |
| #endif |
| |
| #include <signal.h> |
| |
| /* Suspend the process until a signal arrives. |
| This always returns -1 and sets errno to EINTR. */ |
| extern __typeof(pause) __libc_pause; |
| int |
| __libc_pause (void) |
| { |
| sigset_t set; |
| |
| /*__sigemptyset (&set); - why? */ |
| sigprocmask (SIG_BLOCK, NULL, &set); |
| |
| /* pause is a cancellation point, but so is sigsuspend. |
| So no need for anything special here. */ |
| |
| return sigsuspend (&set); |
| } |
| weak_alias (__libc_pause, pause) |
| |
| #ifdef __UCLIBC_HAS_THREADS_NATIVE__ |
| LIBC_CANCEL_HANDLED (); /* sigsuspend handles our cancellation. */ |
| #endif |
| |