+typedef struct blockingState {
+ robj **keys; /* The key we are waiting to terminate a blocking
+ * operation such as BLPOP. Otherwise NULL. */
+ int count; /* Number of blocking keys */
+ time_t timeout; /* Blocking operation timeout. If UNIX current time
+ * is >= timeout then the operation timed out. */
+ robj *target; /* The key that should receive the element,
+ * for BRPOPLPUSH. */
+} blockingState;
+