added notification for circle cache updates to avoid the need for an additional UI timer

libretroshare/src/retroshare/rsgxscircles.h

@@ -187,6 +187,10 @@ enum class RsGxsCircleEventCode: uint8_t
 
 	/** mCircleId contains the circle id */
 	NEW_CIRCLE                = 0x06,
+
+	/** no additional information. Simply means that the info previously from the cache has changed. */
+	CACHE_DATA_UPDATED        = 0x07,
+
 };
 
 struct RsGxsCircleEvent: RsEvent

libretroshare/src/services/p3gxscircles.cc

@@ -103,6 +103,7 @@
 #define MIN_CIRCLE_LOAD_GAP		5
 #define GXS_CIRCLE_DELAY_TO_FORCE_MEMBERSHIP_UPDATE	 60	// re-check every 1 mins. Normally this shouldn't be necessary since notifications inform abotu new messages.
 #define GXS_CIRCLE_DELAY_TO_CHECK_MEMBERSHIP_UPDATE	 60	// re-check every 1 mins. Normally this shouldn't be necessary since notifications inform abotu new messages.
+#define GXS_CIRCLE_DELAY_TO_SEND_CACHE_UPDATED_EVENT 10	// do not send cache update events more often than every 10 secs.
 
 /********************************************************************************/
 /******************* Startup / Tick    ******************************************/
@@ -117,11 +118,13 @@ p3GxsCircles::p3GxsCircles(
     RsGxsCircles(static_cast<RsGxsIface&>(*this)), GxsTokenQueue(this),
     RsTickEvent(), mIdentities(identities), mPgpUtils(pgpUtils),
     mCircleMtx("p3GxsCircles"),
-    mCircleCache(DEFAULT_MEM_CACHE_SIZE, "GxsCircleCache" )
+    mCircleCache(DEFAULT_MEM_CACHE_SIZE, "GxsCircleCache" ),
+    mCacheUpdated(false)
 {
 	// Kick off Cache Testing, + Others.
 	//RsTickEvent::schedule_in(CIRCLE_EVENT_CACHETEST, CACHETEST_PERIOD);
     	mLastCacheMembershipUpdateTS = 0 ;
+        mLastCacheUpdateEvent = 0;
         
 	RsTickEvent::schedule_now(CIRCLE_EVENT_LOADIDS);
 
@@ -490,6 +493,20 @@ void	p3GxsCircles::service_tick()
 	GxsTokenQueue::checkRequests(); // GxsTokenQueue handles all requests.
     
 	rstime_t now = time(NULL);
+
+    if(mCacheUpdated && now > mLastCacheUpdateEvent + GXS_CIRCLE_DELAY_TO_SEND_CACHE_UPDATED_EVENT)
+    {
+        if(rsEvents)
+        {
+            auto ev = std::make_shared<RsGxsCircleEvent>();
+            ev->mCircleEventType = RsGxsCircleEventCode::CACHE_DATA_UPDATED;
+            rsEvents->postEvent(ev);
+        }
+
+        mLastCacheUpdateEvent = now;
+        mCacheUpdated = false;
+    }
+
 	if(now > mLastCacheMembershipUpdateTS + GXS_CIRCLE_DELAY_TO_CHECK_MEMBERSHIP_UPDATE)
 	{
 		checkCircleCache();
@@ -552,6 +569,7 @@ void p3GxsCircles::notifyChanges(std::vector<RsGxsNotify *> &changes)
 					}
 
 				mCircleCache.erase(circle_id);
+                mCacheUpdated = true;
 			}
 		}
 
@@ -577,6 +595,7 @@ void p3GxsCircles::notifyChanges(std::vector<RsGxsNotify *> &changes)
 			    {
 				    RsStackMutex stack(mCircleMtx); /********** STACK LOCKED MTX ******/
 				    mCircleCache.erase(RsGxsCircleId(*git));
+					mCacheUpdated = true;
 			    }
 		    }
 	    }
@@ -646,6 +665,7 @@ void p3GxsCircles::notifyChanges(std::vector<RsGxsNotify *> &changes)
 				{
 				    RsStackMutex stack(mCircleMtx); /********** STACK LOCKED MTX ******/
 				    mCircleCache.erase(RsGxsCircleId(*git));
+					mCacheUpdated = true;
 			    }
 
             }
@@ -700,7 +720,6 @@ bool p3GxsCircles::getCircleDetails(
                     		}
 		    }
 
-
 		    return true;
 	    }
     }
@@ -1462,6 +1481,7 @@ bool p3GxsCircles::cache_load_for_token(uint32_t token)
 		    RsTickEvent::schedule_in(CIRCLE_EVENT_RELOADIDS, GXSID_LOAD_CYCLE, id.toStdString());
 	    }
 
+		mCacheUpdated = true;
     }
 
     return true;
@@ -1498,6 +1518,8 @@ bool p3GxsCircles::locked_processLoadingCacheEntry(RsGxsCircleCache& cache)
 				if(mIdentities->haveKey(pit->first))
 				{
 					pit->second.subscription_flags |= GXS_EXTERNAL_CIRCLE_FLAGS_KEY_AVAILABLE;
+
+                    mCacheUpdated = true;
 #ifdef DEBUG_CIRCLES
 					std::cerr << "    Key is now available!"<< std::endl;
 #endif
@@ -1749,6 +1771,8 @@ bool p3GxsCircles::locked_checkCircleCacheForAutoSubscribe(RsGxsCircleCache &cac
         
 		cache.mGroupStatus &= ~GXS_SERV::GXS_GRP_STATUS_UNPROCESSED;
 
+        mCacheUpdated = true;
+		
 		return true;
 	}
 	else 
@@ -1771,6 +1795,7 @@ bool p3GxsCircles::locked_checkCircleCacheForAutoSubscribe(RsGxsCircleCache &cac
         
 		cache.mGroupStatus &= ~GXS_SERV::GXS_GRP_STATUS_UNPROCESSED;
         
+        mCacheUpdated = true;
 		return true ;
 	}
 }
@@ -2427,6 +2452,7 @@ bool p3GxsCircles::processMembershipRequests(uint32_t token)
                     else
                     	std::cerr << " (EE) unknown subscription order type: " << item->subscription_type ;
                     
+					mCacheUpdated = true;
 #ifdef DEBUG_CIRCLES
                     std::cerr << " UPDATING" << std::endl;
 #endif
@@ -2441,6 +2467,7 @@ bool p3GxsCircles::processMembershipRequests(uint32_t token)
             }
             
             data.mLastUpdatedMembershipTS = time(NULL) ;
+			mCacheUpdated = true;
 	}
     
     RsStackMutex stack(mCircleMtx); /********** STACK LOCKED MTX ******/

libretroshare/src/services/p3gxscircles.h

@@ -345,6 +345,8 @@ public:
 	uint32_t mDummyIdToken;
 	std::list<RsGxsId> mDummyPgpLinkedIds;
 	std::list<RsGxsId> mDummyOwnIds;
+    bool mCacheUpdated ;
+    rstime_t mLastCacheUpdateEvent;
 
 	RS_SET_CONTEXT_DEBUG_LEVEL(2)
 };

retroshare-gui/src/gui/Identity/IdDialog.cpp

@@ -429,6 +429,7 @@ void IdDialog::handleEvent_main_thread(std::shared_ptr<const RsEvent> event)
 		case RsGxsCircleEventCode::CIRCLE_MEMBERSHIP_LEAVE:
 		case RsGxsCircleEventCode::CIRCLE_MEMBERSHIP_JOIN:
 		case RsGxsCircleEventCode::CIRCLE_MEMBERSHIP_REVOQUED:
+		case RsGxsCircleEventCode::CACHE_DATA_UPDATED:
 
 			updateCircles();
 		default: