[git commit future 1/1] sysconf.c: the clock_getres function is good for NPTL as well

[Bernhard Reutner-Fischer]

On Sat, Mar 19, 2011 at 11:51:25AM -0700, Khem Raj wrote:
>
>commit: http://git.uclibc.org/uClibc/commit/?id=0fd8c2345dd601d8c139291001df531f2517b491
>branch: http://git.uclibc.org/uClibc/commit/?id=refs/heads/future
>
>Even if glibc reuses the syscall (bloat), we can reuse the function.
>Make sure, that we use it only if it is provided by the syscall
>and the function is really around (UCLIBC_HAS_REALTIME disables it),
>else we get into a loop.
>
>Signed-off-by: Peter S. Mazinger <ps.m at gmx.net>
>---
> libc/unistd/sysconf.c |   15 +++------------
> 1 files changed, 3 insertions(+), 12 deletions(-)
>
>diff --git a/libc/unistd/sysconf.c b/libc/unistd/sysconf.c
>index 2859ddd..b9aacff 100644
>--- a/libc/unistd/sysconf.c
>+++ b/libc/unistd/sysconf.c
>@@ -984,22 +984,13 @@ long int sysconf(int name)
> #endif
> 
>     case _SC_MONOTONIC_CLOCK:
>-#ifdef __NR_clock_getres
>-    /* Check using the clock_getres system call.  */
>-# ifdef __UCLIBC_HAS_THREADS_NATIVE__
>-    {
>-      struct timespec ts;
>-      INTERNAL_SYSCALL_DECL (err);
>-      int r;
>-      r = INTERNAL_SYSCALL (clock_getres, err, 2, CLOCK_MONOTONIC, &ts);
>-      return INTERNAL_SYSCALL_ERROR_P (r, err) ? -1 : _POSIX_VERSION;
>-    }
>-# else
>+#if defined __UCLIBC_HAS_REALTIME__ && defined __NR_clock_getres
>       if (clock_getres(CLOCK_MONOTONIC, NULL) >= 0)
>         return _POSIX_VERSION;
> 
>       RETURN_NEG_1;
>-# endif
>+#else
>+      RETURN_NEG_1;

nitpick: just NEG_1 once.
i.e.


	case _SC_MONOTONIC_CLOCK:
#if defined __UCLIBC_HAS_REALTIME__ && defined __NR_clock_getres
	if (clock_getres(CLOCK_MONOTONIC, NULL) >= 0)
		return _POSIX_VERSION;
# endif
	 RETURN_NEG_1;

> #endif
> 
> #ifdef __UCLIBC_HAS_THREADS_NATIVE__