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CURLSHOPT_SHARE.md: mention multi-threading requires callbacks

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- Explain that if data is shared in multiple threads then the user must
  set mutex callbacks.

Reported-by: afengsoft@users.noreply.github.com

Fixes https://github.com/curl/curl/issues/17774
Closes https://github.com/curl/curl/pull/17782
This commit is contained in:
Jay Satiro 2025-06-30 01:53:43 -04:00
parent dc263e15e1
commit cd9d791651
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docs/libcurl/opts/CURLSHOPT_SHARE.md
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@ -35,6 +35,9 @@ CURLSHOPT_SHARE(3) multiple times with different data arguments to have
the share object share multiple types of data. Unset a type again by setting
CURLSHOPT_UNSHARE(3).
If any of the data is to be shared in multiple threads then mutex callbacks
must be set as well. See CURLSHOPT_LOCKFUNC(3) and CURLSHOPT_UNLOCKFUNC(3).
## CURL_LOCK_DATA_COOKIE
Cookie data is shared across the easy handles using this shared object. Note