Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.impl / src / org / simantics / db / impl / query / SyncIntProcedure.java

diff --git a/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/SyncIntProcedure.java b/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/SyncIntProcedure.java
new file mode 100644 (file)
index 0000000..f26a703
--- /dev/null
+++ b/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/SyncIntProcedure.java
@@ -0,0 +1,44 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.db.impl.query;\r
+\r
+import org.simantics.db.impl.graph.ReadGraphImpl;\r
+\r
+\r
+abstract public class SyncIntProcedure implements IntProcedure, ThreadRunnable {\r
+\r
+       int barrier = 1;\r
+//     \r
+//    final private AtomicInteger barrier = new AtomicInteger(1);\r
+    \r
+    public SyncIntProcedure() {\r
+    }\r
+    \r
+    final protected void inc() {\r
+//     System.err.println("inc " + barrier.get());\r
+       ++barrier;\r
+//     barrier.incrementAndGet();\r
+    }\r
+    \r
+    final protected void dec(ReadGraphImpl graph) {\r
+//     System.err.println("dec " + barrier.get());\r
+       if((--barrier) == 0) {\r
+            run(graph);\r
+       }\r
+    }\r
+    \r
+    @Override\r
+    public void exception(ReadGraphImpl graph, Throwable t) {\r
+       throw new Error("Errors are not supported,", t);\r
+    }\r
+    \r
+}\r