X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.acorn%2Fsrc%2Forg%2Fsimantics%2Facorn%2FMainProgram.java;h=c69c7bea6fe7957bf3c408256a6d9f5cbfed16e4;hp=78ff9e8995c4162fc347edc9b51bd6f7c69ec4ff;hb=23fa194c0cf85db6c435f342600d30ddc0f8c620;hpb=dcca7344e1da6f975859fd79fbc6cead7d363042

diff --git a/bundles/org.simantics.acorn/src/org/simantics/acorn/MainProgram.java b/bundles/org.simantics.acorn/src/org/simantics/acorn/MainProgram.java
index 78ff9e899..c69c7bea6 100644
--- a/bundles/org.simantics.acorn/src/org/simantics/acorn/MainProgram.java
+++ b/bundles/org.simantics.acorn/src/org/simantics/acorn/MainProgram.java
@@ -20,9 +20,13 @@ import org.simantics.acorn.lru.ClusterStreamChunk;
 import org.simantics.acorn.lru.ClusterUpdateOperation;
 import org.simantics.db.service.ClusterUID;
 import org.simantics.utils.logging.TimeLogger;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class MainProgram implements Runnable, Closeable {
 
+	private static final Logger LOGGER = LoggerFactory.getLogger(MainProgram.class);
+	
 	private static final int CLUSTER_THREADS = 4;
 	private static final int CHUNK_CACHE_SIZE = 100;
 
@@ -250,7 +254,45 @@ public class MainProgram implements Runnable, Closeable {
 			deathBarrier.release();
 		}
 	}
+	
+	static interface MainProgramRunnable {
+		
+		public void run() throws Exception;
+		public void done();
+		
+	}
 
+	public Exception runIdle(MainProgramRunnable runnable) {
+		try {
+			long startTime = System.currentTimeMillis();
+			while (true) {
+				boolean hasMutex = false;
+				try {
+					synchronized (MainProgram.this) {
+						if (hasMutex = mutex.tryAcquire()) {
+							if (operations.isEmpty()) {
+								runnable.run();
+								return null;
+							}
+						}
+					}
+					long endTime = System.currentTimeMillis(); 
+					if ((endTime - startTime) > 100) {
+						startTime = endTime; 
+						LOGGER.info("MainProgram.runIdle() retry mutex acquire!");
+					}
+				} catch (Exception e) {
+					return e;
+				} finally {
+					if (hasMutex)
+						mutex.release();
+				}
+			}
+		} finally {
+			runnable.done();
+		}
+	}
+	
 	/*
 	 * Mutex for streamLRU is assumed here
 	 * 
@@ -277,7 +319,7 @@ public class MainProgram implements Runnable, Closeable {
 
 		ClusterStreamChunk last = operations.isEmpty() ? null : operations.getLast();
         if (!alive) {
-            System.err.println("Trying to commit operation after MainProgram is closed! Operation is " + last);
+            LOGGER.error("Trying to commit operation after MainProgram is closed! Operation is " + last);
 //          return;
         }
 		if(last != null) last.commit();
@@ -286,7 +328,7 @@ public class MainProgram implements Runnable, Closeable {
 
 	public synchronized void schedule(ClusterUpdateOperation operation) throws IllegalAcornStateException {
 	    if (!alive) {
-	        System.err.println("Trying to schedule operation after MainProgram is closed! Operation is " + operation);
+	        LOGGER.error("Trying to schedule operation after MainProgram is closed! Operation is " + operation);
 //	        return;
 	    }
 		clusters.streamLRU.acquireMutex();