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sigsetops.3: Note treatment of signals used internally by NPTL 

The glibc sigfillset() function excludes the two real-time
signals used by NPTL.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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Michael Kerrisk 2015-03-22 11:54:31 +01:00
parent 59526510f2
commit 3f1982b218
1 changed files with 8 additions and 0 deletions
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@ -154,6 +154,14 @@ T} Thread safety MT-Safe
.SH CONFORMING TO
POSIX.1-2001.
.SH NOTES
When creating a filled signal set, the glibc
.BR sigfillset ()
function does not include the two real-time signals used internally
by the NPTL threading implementation.
See
.BR nptl (7)
for details.
.SS Glibc extensions
If the
.B _GNU_SOURCE