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CURLOPT_NOSIGNAL might be a MUST to make threaded use work, like on AIX 5.2 

due to the use of the static variable for sigsetjmp()
This commit is contained in:
Daniel Stenberg 2006-02-09 22:25:41 +00:00
parent 12f5c67bf5
commit 3b19c7d0d9
1 changed files with 8 additions and 6 deletions
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14
docs/libcurl/libcurl-tutorial.3
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@ -5,7 +5,7 @@
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
.\" * Copyright (C) 1998 - 2005, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" * Copyright (C) 1998 - 2006, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
@ -267,11 +267,13 @@ GnuTLS
http://www.gnu.org/software/gnutls/manual/html_node/Multi_002dthreaded-applications.html
When using multiple threads you should set the CURLOPT_NOSIGNAL option to
TRUE for all handles. Everything will work fine except that timeouts are not
honored during the DNS lookup - which you can work around by building libcurl
with c-ares support. c-ares is a library that provides asynchronous name
resolves. Unfortunately, c-ares does not yet support IPv6.
When using multiple threads you should set the CURLOPT_NOSIGNAL option to TRUE
for all handles. Everything will or might work fine except that timeouts are
not honored during the DNS lookup - which you can work around by building
libcurl with c-ares support. c-ares is a library that provides asynchronous
name resolves. Unfortunately, c-ares does not yet fully support IPv6. On some
platforms, libcurl simply will not function properly multi-threaded unless
this option is set.
Also, note that CURLOPT_DNS_USE_GLOBAL_CACHE is not thread-safe.