FAQ: expand the thread-safe section

... with a mention of *NOSIGNAL, based on talk in bug #1386
This commit is contained in:
Daniel Stenberg 2014-07-09 22:06:34 -05:00
parent 1cef8f0bc3
commit 6273b23a05

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@ -1099,6 +1099,12 @@ FAQ
your system has such. Note that you must never share the same handle in
multiple threads.
libcurl's implementation of timeouts might use signals (depending on what it
was built to use for name resolving), and signal handling is generally not
thread-safe. Multi-threaded Applicationss that call libcurl from different
threads (on different handles) might want to use CURLOPT_NOSIGNAL, e.g.:
curl_easy_setopt(handle, CURLOPT_NOSIGNAL, true);
If you use a OpenSSL-powered libcurl in a multi-threaded environment, you
need to provide one or two locking functions: