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authorJay Satiro <raysatiro@yahoo.com>2016-05-05 14:34:27 -0400
committerJay Satiro <raysatiro@yahoo.com>2016-05-05 14:34:27 -0400
commitbefa21f2cdefd3094a5ae407099d616d1f24fa4d (patch)
tree334fa132f88cfd4aa8fde7b7b42f5d157ff38647 /docs/FAQ
parent5823179523e9ad02a98ab6e184ed120ad2324481 (diff)
downloadcurl-befa21f2cdefd3094a5ae407099d616d1f24fa4d.tar.gz
FAQ: refer to thread safety guidelines
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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:
-
- https://www.openssl.org/docs/crypto/threads.html
-
- If you use a GnuTLS-powered libcurl in a multi-threaded environment, you
- need to provide locking function(s) for libgcrypt (which is used by GnuTLS
- for the crypto functions).
-
- https://web.archive.org/web/20111103083330/http://www.gnu.org/software/gnutls/manual/html_node/Multi_002dthreaded-applications.html
-
- No special locking is needed with a NSS-powered libcurl. NSS is thread-safe.
+ There may be some exceptions to thread safety depending on how libcurl was
+ built. Please review the guidelines for thread safety to learn more:
+ https://curl.haxx.se/libcurl/c/threadsafe.html
5.2 How can I receive all data into a large memory chunk?