ualarm.3: ATTRIBUTES: Note function that is thread-safe

The function ualarm() is thread safe.

Signed-off-by: Peng Haitao <penght@cn.fujitsu.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

diff --git a/man3/ualarm.3 b/man3/ualarm.3
index 7a9165c796e7569e8be872a02cb8d6ac941ba270..e69d2ff7b2ffc8e931fd4180e2c50cce0a990b04 100644 (file)
--- a/man3/ualarm.3
+++ b/man3/ualarm.3
@@ -21,7 +21,7 @@
 .\" <http://www.gnu.org/licenses/>.
 .\" %%%LICENSE_END
 .\"
-.TH UALARM 3  2013-04-18 "" "Linux Programmer's Manual"
+.TH UALARM 3  2013-12-23 "" "Linux Programmer's Manual"
 .SH NAME
 ualarm \- schedule signal after given number of microseconds
 .SH SYNOPSIS
@@ -89,6 +89,11 @@ Interrupted by a signal.
 .B EINVAL
 \fIusecs\fP or \fIinterval\fP is not smaller than 1000000.
 (On systems where that is considered an error.)
+.SH ATTRIBUTES
+.SS Multithreading (see pthreads(7))
+The
+.BR ualarm ()
+function is thread-safe.
 .SH CONFORMING TO
 4.3BSD, POSIX.1-2001.
 POSIX.1-2001 marks