+ /* check if we already have the lock
+ * (could happen if a RAND_poll() implementation calls RAND_status()) */
+ if (crypto_lock_rand)
+ {
+ CRYPTO_r_lock(CRYPTO_LOCK_RAND2);
+ do_not_lock = (locking_thread == CRYPTO_thread_id());
+ CRYPTO_r_unlock(CRYPTO_LOCK_RAND2);
+ }
+ else
+ do_not_lock = 0;
+
+ if (!do_not_lock)
+ {
+ CRYPTO_w_lock(CRYPTO_LOCK_RAND);
+
+ /* prevent ssleay_rand_bytes() from trying to obtain the lock again */
+ CRYPTO_w_lock(CRYPTO_LOCK_RAND2);
+ locking_thread = CRYPTO_thread_id();
+ CRYPTO_w_unlock(CRYPTO_LOCK_RAND2);
+ crypto_lock_rand = 1;
+ }
+