/* 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