Diffstat (limited to 'doc/crypto/threads.pod')
1 files changed, 6 insertions, 2 deletions
diff --git a/doc/crypto/threads.pod b/doc/crypto/threads.pod
index dc0e9391dc20..30c19b815fd8 100644
@@ -63,9 +63,13 @@ CRYPTO_destroy_dynlockid, CRYPTO_lock - OpenSSL thread support
-OpenSSL can safely be used in multi-threaded applications provided
-that at least two callback functions are set, locking_function and
+OpenSSL can generally be used safely in multi-threaded applications provided
+that at least two callback functions are set, the locking_function and
+Note that OpenSSL is not completely thread-safe, and unfortunately not all
+global resources have the necessary locks.
+Further, the thread-safety does not extend to things like multiple threads
+using the same B<SSL> object at the same time.
locking_function(int mode, int n, const char *file, int line) is
needed to perform locking on shared data structures.