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Fix doc about _setjmp.
author
Bruno Haible
<bruno@clisp.org>
Sat, 7 Jun 2008 11:49:10 +0000
(13:49 +0200)
committer
Bruno Haible
<bruno@clisp.org>
Sat, 7 Jun 2008 11:49:10 +0000
(13:49 +0200)
ChangeLog
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doc/posix-functions/_longjmp.texi
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doc/posix-functions/_setjmp.texi
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doc/posix-functions/setjmp.texi
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diff --git
a/ChangeLog
b/ChangeLog
index 2c4297fdf4364f26b5e372200ed9e772f4742ce1..d7219dd039a4f3b2b8d5d4ca81a6585c6f58e584 100644
(file)
--- a/
ChangeLog
+++ b/
ChangeLog
@@
-1,7
+1,16
@@
+2008-06-07 Bruno Haible <bruno@clisp.org>
+
+ * doc/posix-functions/_setjmp.texi: Explain the use of this function
+ regardless of POSIX.
+ * doc/posix-functions/_longjmp.texi: Likewise.
+ * doc/posix-functions/setjmp.texi: Mention HP-UX as not counting as a
+ SystemV platform in this case.
+
2008-06-06 Eric Blake <ebb9@byu.net>
Document abort() bugs.
* doc/posix-functions/abort.texi (abort): Mention anomalies.
2008-06-06 Eric Blake <ebb9@byu.net>
Document abort() bugs.
* doc/posix-functions/abort.texi (abort): Mention anomalies.
+
* doc/posix-functions/setjmp.texi (setjmp): Mingw has setjmp.
* doc/posix-functions/sigsetjmp.texi (sigsetjmp): Cygwin has
sigsetjmp.
* doc/posix-functions/setjmp.texi (setjmp): Mingw has setjmp.
* doc/posix-functions/sigsetjmp.texi (sigsetjmp): Cygwin has
sigsetjmp.
diff --git
a/doc/posix-functions/_longjmp.texi
b/doc/posix-functions/_longjmp.texi
index 7d571f88e408a67befb994817276f4f94d5e12db..271239560e3a2ece8966c3ddaa069c24c5010ab7 100644
(file)
--- a/
doc/posix-functions/_longjmp.texi
+++ b/
doc/posix-functions/_longjmp.texi
@@
-15,7
+15,10
@@
Portability problems not fixed by Gnulib:
@item
This function is missing on some platforms:
Solaris 2.5.1, mingw.
@item
This function is missing on some platforms:
Solaris 2.5.1, mingw.
-
-@item
-This function is obsolete; use @code{siglongjmp} instead.
@end itemize
@end itemize
+
+Note: A future revision of POSIX later than the 2008/2009 one may drop the
+functions @code{_setjmp} and @code{_longjmp}. Still, in 2008, on all
+systems which have @code{_setjmp}, it is the fastest way to save the
+registers but not the signal mask (up to 30 times faster than @code{setjmp}
+on some systems).
diff --git
a/doc/posix-functions/_setjmp.texi
b/doc/posix-functions/_setjmp.texi
index 7c1dc320f620c5fa859a52603acf151ea5a41e2f..abf18252244051241e836939041d6604158a2bfe 100644
(file)
--- a/
doc/posix-functions/_setjmp.texi
+++ b/
doc/posix-functions/_setjmp.texi
@@
-15,7
+15,10
@@
Portability problems not fixed by Gnulib:
@item
This function is missing on some platforms:
Solaris 2.5.1.
@item
This function is missing on some platforms:
Solaris 2.5.1.
-
-@item
-This function is obsolete; use @code{sigsetjmp} instead.
@end itemize
@end itemize
+
+Note: A future revision of POSIX later than the 2008/2009 one may drop the
+functions @code{_setjmp} and @code{_longjmp}. Still, in 2008, on all
+systems which have @code{_setjmp}, it is the fastest way to save the
+registers but not the signal mask (up to 30 times faster than @code{setjmp}
+on some systems).
diff --git
a/doc/posix-functions/setjmp.texi
b/doc/posix-functions/setjmp.texi
index f6ecc0016e44b2e19c3634f0bc306de7391cd937..3d7860b834ae108c6fef8eb96c959a21ebfa0cee 100644
(file)
--- a/
doc/posix-functions/setjmp.texi
+++ b/
doc/posix-functions/setjmp.texi
@@
-16,7
+16,8
@@
Portability problems not fixed by Gnulib:
POSIX does not specify whether @code{setjmp} saves the signal mask in the
@code{jmp_buf}. It does on BSD platforms, and on glibc platforms when
@code{_BSD_SOURCE} is defined; in this case @code{setjmp} behaves like
POSIX does not specify whether @code{setjmp} saves the signal mask in the
@code{jmp_buf}. It does on BSD platforms, and on glibc platforms when
@code{_BSD_SOURCE} is defined; in this case @code{setjmp} behaves like
-@code{sigsetjmp}, and functions @code{_setjmp} and @code{_longjmp} are
-available that don't save or restore the signal mask. On System V platforms,
-and on glibc platforms by default, @code{setjmp} doesn't save the signal mask.
+@code{sigsetjmp(.,1)}, and functions @code{_setjmp} and @code{_longjmp} are
+available that don't save or restore the signal mask. On System V platforms
+(excluding HP-UX), and on glibc platforms by default, @code{setjmp} doesn't
+save the signal mask.
@end itemize
@end itemize