diff options
| author | Peter S. Mazinger <ps.m@gmx.net> | 2011-04-23 20:46:59 +0200 |
|---|---|---|
| committer | Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> | 2012-06-15 14:00:42 +0200 |
| commit | 62c208d68fb07d85e42780394576b6b40aae7d53 (patch) | |
| tree | c3ea8096678c8aea315396ac10b795bf666607b4 /libc/sysdeps/linux | |
| parent | 95c40e9fafcba415cf50611f8dc7c425f078f376 (diff) | |
pause.c: add back usage of pause syscall
No idea why it was removed when NPTL was added,
but glibc uses it as well.
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Diffstat (limited to 'libc/sysdeps/linux')
| -rw-r--r-- | libc/sysdeps/linux/common/pause.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/libc/sysdeps/linux/common/pause.c b/libc/sysdeps/linux/common/pause.c index 8a4d82177..32fe839c0 100644 --- a/libc/sysdeps/linux/common/pause.c +++ b/libc/sysdeps/linux/common/pause.c @@ -7,16 +7,24 @@ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. */ -#define __need_NULL -#include <stddef.h> +#include <sys/syscall.h> #include <unistd.h> -#include <signal.h> #include <cancel.h> +#ifdef __NR_pause +/* even if it is not obvious, glibc uses the pause syscall, see syscalls.list */ +# define __NR___pause_nocancel __NR_pause +static _syscall0(int, __NC(pause)) +CANCELLABLE_SYSCALL(int, pause, (void), ()) +#else +# define __need_NULL +# include <stddef.h> +# include <signal.h> + int -#ifdef __LINUXTHREADS_OLD__ +# ifdef __LINUXTHREADS_OLD__ weak_function -#endif +# endif pause(void) { sigset_t set; @@ -30,3 +38,4 @@ pause(void) } lt_strong_alias(pause) LIBC_CANCEL_HANDLED (); /* sigsuspend handles our cancellation. */ +#endif |