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| author | Bruno Haible <bruno@clisp.org> | 2020-06-28 22:10:32 +0200 |
|---|---|---|
| committer | Bruno Haible <bruno@clisp.org> | 2020-06-28 22:12:49 +0200 |
| commit | 3f70affe3ee2c5378965c8bf9d235af54837ec15 (patch) | |
| tree | c2d6ee902683e31e99c868aba301cdcf982c0efc /doc | |
| parent | 70872213ef6614cf52d5978a5fdf8b9e628fc786 (diff) | |
| download | gnulib-3f70affe3ee2c5378965c8bf9d235af54837ec15.tar.gz | |
doc: Add a note about sigprocmask vs. pthread_sigmask.
* doc/posix-functions/sigprocmask.texi: Add note.
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/posix-functions/sigprocmask.texi | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/posix-functions/sigprocmask.texi b/doc/posix-functions/sigprocmask.texi index 20b5405e00..1a1379a21d 100644 --- a/doc/posix-functions/sigprocmask.texi +++ b/doc/posix-functions/sigprocmask.texi @@ -16,3 +16,10 @@ mingw, MSVC 14. Portability problems not fixed by Gnulib: @itemize @end itemize + +Note: Although @code{sigprocmask} officially has undefined behaviour in +multi-threaded programs, in practice it is essentially equivalent to +@code{pthread_sigmask}, with only a difference regarding the error +return convention. It's simpler to use @code{sigprocmask}, since it does +not require linking with @code{-lpthread} on some platforms: +glibc, NetBSD, OpenBSD, AIX, IRIX. |