first cut at multi-threading version

src/ca/caPutNotify.cpp

@@ -0,0 +1,75 @@
+
+
+
+
+/*
+ * caExtraEventLabor ()
+ */
+LOCAL void caExtraEventLabor (void *pArg)
+{
+    cac                         *pcac = (cac *) pArg;
+	dbcaPutNotify               *ppnb;
+	struct event_handler_args   args;
+	
+	while (TRUE) {
+        semTakeStatus semStatus;
+
+		/*
+		 * independent lock used here in order to
+		 * avoid any possibility of blocking
+		 * the database (or indirectly blocking
+		 * one client on another client).
+		 */
+		semStatus = semMutexTakeTimeout (pcac->localIIU.putNotifyLock, 60.0 /* sec */);
+        if (semStatus!=semTakeOK) {
+            ca_printf (pcac, "cac: put notify deadlock condition detected\n");
+            (*pcac->localIIU.pdbAdapter->p_db_post_extra_labor) (pcac->localIIU.evctx);
+            break;
+        }
+		ppnb = (dbcaPutNotify *) ellGet (&pcac->localIIU.putNotifyQue);
+		semMutexGive (pcac->localIIU.putNotifyLock);
+		
+		/*
+		 * break to loop exit
+		 */
+		if (!ppnb) {
+			break;
+		}
+		
+		/*
+		 * setup arguments and call user's function
+		 */
+		args.usr = ppnb->caUserArg;
+		args.chid = ppnb->dbPutNotify.usrPvt;
+#error type must be an external type
+		args.type = ppnb->dbPutNotify.dbrType;
+		args.count = ppnb->dbPutNotify.nRequest;
+		args.dbr = NULL;
+		if (ppnb->dbPutNotify.status) {
+			if (ppnb->dbPutNotify.status == S_db_Blocked) {
+				args.status = ECA_PUTCBINPROG;
+			}
+			else {
+				args.status = ECA_PUTFAIL;
+			}
+		}
+		else {
+			args.status = ECA_NORMAL;
+		}
+		
+		LOCK (pcac);
+		(*ppnb->caUserCallback) (args);
+		UNLOCK (pcac);
+		
+		ppnb->busy = FALSE;
+	}
+	
+	/*
+	 * wakeup the TCP thread if it is waiting for a cb to complete
+	 */
+	semBinaryGive (pcac->ca_blockSem);
+}
+
+
+
+