flow: new flow queue: flow_recycle_q

This queue will be used by the FlowManager to pass timed out flows
to another thread that will do the actual cleanup.

src/flow-private.h

@@ -78,6 +78,9 @@ FlowProto flow_proto[FLOW_PROTO_MAX];
 /** spare/unused/prealloced flows live here */
 FlowQueue flow_spare_q;
 
+/** queue to pass flows to cleanup/log thread(s) */
+FlowQueue flow_recycle_q;
+
 FlowBucket *flow_hash;
 FlowConfig flow_config;
 

src/flow.c

@@ -304,6 +304,7 @@ void FlowInitConfig(char quiet)
     SC_ATOMIC_INIT(flow_memuse);
     SC_ATOMIC_INIT(flow_prune_idx);
     FlowQueueInit(&flow_spare_q);
+    FlowQueueInit(&flow_recycle_q);
 
     unsigned int seed = RandomTimePreseed();
     /* set defaults */
@@ -470,6 +471,7 @@ void FlowShutdown(void)
     }
     (void) SC_ATOMIC_SUB(flow_memuse, flow_config.hash_size * sizeof(FlowBucket));
     FlowQueueDestroy(&flow_spare_q);
+    FlowQueueDestroy(&flow_recycle_q);
 
     SC_ATOMIC_DESTROY(flow_prune_idx);
     SC_ATOMIC_DESTROY(flow_memuse);