that at least two callback functions are set.
locking_function(int mode, int n, const char *file, int line) is
-needed to perform locking on shared data stuctures. Multi-threaded
-applications will crash at random if it is not set.
+needed to perform locking on shared data structures.
+(Note that OpenSSL uses a number of global data structures that
+will be implicitly shared whenever multiple threads use OpenSSL.)
+Multi-threaded applications will crash at random if it is not set.
locking_function() must be able to handle up to CRYPTO_num_locks()
different mutex locks. It sets the B<n>-th lock if B<mode> &
lock. Multi-threaded applications might crash at random if it is not set.
dyn_lock_function(int mode, CRYPTO_dynlock *l, const char *file, int line)
-is needed to perform locking off dynamic lock nunmbered n. Multi-threaded
+is needed to perform locking off dynamic lock numbered n. Multi-threaded
applications might crash at random if it is not set.
dyn_destroy_function(CRYPTO_dynlock *l, const char *file, int line) is
describing what should be done with the lock. n is the number of the
lock as returned from CRYPTO_get_new_dynlockid(). mode can be combined
from the following values. These values are pairwise exclusive, with
-undefined behavior if misused (for example, CRYPTO_READ and CRYPTO_WRITE
+undefined behaviour if misused (for example, CRYPTO_READ and CRYPTO_WRITE
should not be used together):
CRYPTO_LOCK 0x01