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pthreads.7: Rework, and fix small error in, thread-safe function list 

Integrate the changes that occurred in POSIX.1-2008 into the
main list (to be consistent with the list, elsewhere on this
page, of functions that are cancellation points).

Also, fix an error that said that strerror() was added to
the list in POSIX.1-2008.  It was strsignal() that was
added.  (strerror() was already in the list in POSIX.1-2001.)

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2008-11-11 10:08:21 -05:00
parent 940c8ce244
commit 447cd9e76e
1 changed files with 10 additions and 12 deletions
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22
man7/pthreads.7
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@ -132,8 +132,9 @@ A thread-safe function is one that can be safely
(i.e., it will deliver the same results regardless of whether it is)
called from multiple threads at the same time.
POSIX.1-2001 requires that all functions specified in the standard
shall be thread-safe, except for the following functions:
POSIX.1-2001 and POSIX.1-2008 require that all functions specified
in the standard shall be thread-safe,
except for the following functions:
.in +4n
.nf
@ -155,14 +156,14 @@ dbm_store()
dirname()
dlerror()
drand48()
ecvt()
ecvt() [POSIX.1-2001 only (function removed in POSIX.1-2008)]
encrypt()
endgrent()
endpwent()
endutxent()
fcvt()
fcvt() [POSIX.1-2001 only (function removed in POSIX.1-2008)]
ftw()
gcvt()
gcvt() [POSIX.1-2001 only (function removed in POSIX.1-2008)]
getc_unlocked()
getchar_unlocked()
getdate()
@ -170,8 +171,8 @@ getenv()
getgrent()
getgrgid()
getgrnam()
gethostbyaddr()
gethostbyname()
gethostbyaddr() [POSIX.1-2001 only (function removed in POSIX.1-2008)]
gethostbyname() [POSIX.1-2001 only (function removed in POSIX.1-2008)]
gethostent()
getlogin()
getnetbyaddr()
@ -218,7 +219,9 @@ setkey()
setpwent()
setutxent()
strerror()
strsignal() [Added in POSIX.1-2008]
strtok()
system() [Added in POSIX.1-2008]
tmpnam() if passed a non-NULL argument
ttyname()
unsetenv()
@ -228,11 +231,6 @@ wcstombs()
wctomb()
.fi
.in
.PP
POSIX.1-2008 removes ecvt(), fcvt(), gcvt(), gethostbyname(),
and gethostbyaddr() from the above list
(because those functions are removed from the standard), and adds
strerror() and system().
.SS Cancellation Points
POSIX.1 specifies that certain functions must,
and certain other functions may, be cancellation points.