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bindresvport.3: Reformat thread-safety information 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2014-06-12 13:02:36 +02:00
parent 929a50b5d6
commit 1ff0c44502
1 changed files with 18 additions and 8 deletions
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26
man3/bindresvport.3
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@ -90,17 +90,27 @@ is not NULL and
is not
.BR AF_INET .
.SH ATTRIBUTES
.SS Multithreading (see pthreads(7))
Before glibc 2.17, the
For an explanation of the terms used in this section, see
.BR attributes (7).
.TS
allbox;
lb lb lb
l l lw23.
Interface Attribute Value
T{
.BR bindresvport ()
function uses a static variable that is not protected,
so it is not thread-safe.
Since glibc 2.17,
T} Thread safety T{
glibc >= 2.17: MT-Safe
.\" commit f6da27e53695ad1cc0e2a9490358decbbfdff5e5
the
.br
glibc < 2.17: MT-Unsafe
T}
.TE
.PP
The
.BR bindresvport ()
function uses a lock to protect the static variable, so it is thread-safe.
function uses a static variable that was not protected by a lock
before glibc 2.17, rendering the function MT-Unsafe.
.SH CONFORMING TO
Not in POSIX.1-2001.
Present on the BSDs, Solaris, and many other systems.