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-rw-r--r--manual/threads.texi10
1 files changed, 10 insertions, 0 deletions
diff --git a/manual/threads.texi b/manual/threads.texi
index 87fda7d8e7..0192eecf25 100644
--- a/manual/threads.texi
+++ b/manual/threads.texi
@@ -669,6 +669,16 @@ The system does not have sufficient memory.
@end table
@end deftypefun
+@comment semaphore.h
+@comment POSIX-proposed
+@deftypefun int sem_clockwait (sem_t *@var{sem}, clockid_t @var{clockid},
+ const struct timespec *@var{abstime})
+Behaves like @code{sem_timedwait} except the time @var{abstime} is measured
+against the clock specified by @var{clockid} rather than
+@code{CLOCK_REALTIME}. Currently, @var{clockid} must be either
+@code{CLOCK_MONOTONIC} or @code{CLOCK_REALTIME}.
+@end deftypefun
+
@c FIXME these are undocumented:
@c pthread_atfork
@c pthread_attr_destroy