generic-library/openssl
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Update multi-thread FAQ

Browse Source 
Reviewed-by: Matt Caswell <matt@openssl.org>
This commit is contained in:
Rich Salz 2015-05-04 11:54:26 -04:00 committed by Rich Salz
parent ff660b9312
commit a28ef860be
1 changed files with 8 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
FAQ
View File

@ -789,18 +789,15 @@ considered to be security issues.
* Is OpenSSL thread-safe?
Yes (with limitations: an SSL connection may not concurrently be used
by multiple threads). On Windows and many Unix systems, OpenSSL
automatically uses the multi-threaded versions of the standard
libraries. If your platform is not one of these, consult the INSTALL
file.
Provided an application sets up the thread callback functions, the
answer is yes. There are limitations; for example, an SSL connection
cannot be used concurrently by multiple threads. This is true for
most OpenSSL objects.
Multi-threaded applications must provide two callback functions to
OpenSSL by calling CRYPTO_set_locking_callback() and
CRYPTO_set_id_callback(), for all versions of OpenSSL up to and
including 0.9.8[abc...]. As of version 1.0.0, CRYPTO_set_id_callback()
and associated APIs are deprecated by CRYPTO_THREADID_set_callback()
and friends. This is described in the threads(3) manpage.
To do this, your application must call CRYPTO_set_locking_callback()
and one of the CRYPTO_THREADID_set...() API's. See the OpenSSL threads
manpage for details and "note on multi-threading" in the INSTALL file in
the source distribution.
* I've compiled a program under Windows and it crashes: why?