diff options
Diffstat (limited to 'libc/sysdeps/linux/common/pause.c')
| -rw-r--r-- | libc/sysdeps/linux/common/pause.c | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/libc/sysdeps/linux/common/pause.c b/libc/sysdeps/linux/common/pause.c index 19ba30706..cd0ea4a77 100644 --- a/libc/sysdeps/linux/common/pause.c +++ b/libc/sysdeps/linux/common/pause.c @@ -10,18 +10,30 @@ #define __UCLIBC_HIDE_DEPRECATED__ #include <sys/syscall.h> #include <unistd.h> -#include <signal.h> -#ifdef __LINUXTHREADS_OLD__ -extern __typeof(pause) weak_function pause; -strong_alias(pause, __libc_pause) +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include <sysdep-cancel.h> #endif -#ifdef __NR_pause -_syscall0(int, pause) -#else -int pause(void) +#include <signal.h> + +/* Suspend the process until a signal arrives. + This always returns -1 and sets errno to EINTR. */ +int +__libc_pause (void) { - return __sigpause(sigblock(0), 0); + sigset_t set; + + __sigemptyset (&set); + 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 |