Do not duplicate coding.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@xxxxxx>
---
man2/futex.2 | 19 +++++--------------
1 file changed, 5 insertions(+), 14 deletions(-)
diff --git a/man2/futex.2 b/man2/futex.2
index 6c02da7..2d56a20 100644
--- a/man2/futex.2
+++ b/man2/futex.2
@@ -1509,24 +1509,15 @@ fwait(int *futexp)
machine\-language instructions. For further information, see
the GCC Manual. */
- /* Maybe the futex is already available: */
-
- if (__sync_bool_compare_and_swap(futexp, 1, 0))
- return;
-
- /* No; we must wait for the futex value to be changed */
-
while (1) {
- s = futex(futexp, FUTEX_WAIT, 0, NULL, NULL, 0);
- if (s == \-1 && errno != EAGAIN)
- errExit("futex\-FUTEX_WAIT");
-
- /* Is the futex now available? */
-
+ /* Is the futex available? */
if (__sync_bool_compare_and_swap(futexp, 1, 0))
break; /* Yes */
- /* Futex is still not available; wait again */
+ /* Futex is not available; wait */
+ s = futex(futexp, FUTEX_WAIT, 0, NULL, NULL, 0);
+ if (s == \-1 && errno != EAGAIN)
+ errExit("futex\-FUTEX_WAIT");
}
}
--
2.1.4
--
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