+int CRYPTO_atomic_or(uint64_t *val, uint64_t op, uint64_t *ret,
+ CRYPTO_RWLOCK *lock)
+{
+# if defined(__GNUC__) && defined(__ATOMIC_ACQ_REL)
+ if (__atomic_is_lock_free(sizeof(*val), val)) {
+ *ret = __atomic_or_fetch(val, op, __ATOMIC_ACQ_REL);
+ return 1;
+ }
+# elif defined(__sun) && (defined(__SunOS_5_10) || defined(__SunOS_5_11))
+ /* This will work for all future Solaris versions. */
+ if (ret != NULL) {
+ *ret = atomic_or_64_nv(val, op);
+ return 1;
+ }
+# endif
+ if (lock == NULL || !CRYPTO_THREAD_write_lock(lock))
+ return 0;
+ *val |= op;
+ *ret = *val;
+
+ if (!CRYPTO_THREAD_unlock(lock))
+ return 0;
+
+ return 1;
+}
+
+int CRYPTO_atomic_load(uint64_t *val, uint64_t *ret, CRYPTO_RWLOCK *lock)
+{
+# if defined(__GNUC__) && defined(__ATOMIC_ACQUIRE)
+ if (__atomic_is_lock_free(sizeof(*val), val)) {
+ __atomic_load(val, ret, __ATOMIC_ACQUIRE);
+ return 1;
+ }
+# elif defined(__sun) && (defined(__SunOS_5_10) || defined(__SunOS_5_11))
+ /* This will work for all future Solaris versions. */
+ if (ret != NULL) {
+ *ret = atomic_or_64_nv(val, 0);
+ return 1;
+ }
+# endif
+ if (lock == NULL || !CRYPTO_THREAD_read_lock(lock))
+ return 0;
+ *ret = *val;
+ if (!CRYPTO_THREAD_unlock(lock))
+ return 0;
+
+ return 1;
+}