-/*******************************************************************************\r
- * Copyright (c) 2012 Association for Decentralized Information Management in\r
- * 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.common;\r
-\r
-import java.util.HashMap;\r
-import java.util.HashSet;\r
-import java.util.Map;\r
-import java.util.Set;\r
-import java.util.UUID;\r
-import java.util.concurrent.atomic.AtomicBoolean;\r
-\r
-import org.simantics.db.Resource;\r
-import org.simantics.db.WriteOnlyGraph;\r
-import org.simantics.db.common.utils.Logger;\r
-\r
-/**\r
- * A internal temporary store for database indexing-related low-level utilities\r
- * and static data.\r
- * \r
- * This will be moved to more a more logical location at some point.\r
- * \r
- * @author Antti Villberg\r
- * @author Tuukka Lehtonen\r
- * @since 1.8\r
- */\r
-public class Indexing {\r
-\r
- private static final boolean PROFILE = false;\r
-\r
- private static Set<UUID> indexPendings = new HashSet<UUID>();\r
-\r
- private static AtomicBoolean dependenciesIndexingDisabled = new AtomicBoolean();\r
-\r
- private static int indexPendingCounter = 0;\r
-\r
- private static Map<Resource, Map<Class<?>, Object>> caches = new HashMap<Resource, Map<Class<?>, Object>>(); \r
- \r
- private static boolean useIndexing = true;\r
- \r
- @SuppressWarnings("unchecked")\r
- public static <T> T getCache(Resource root, Class<T> clazz) {\r
- Map<Class<?>,Object> cache = caches.get(root);\r
- if(cache == null) return null;\r
- return (T)cache.get(clazz);\r
- }\r
- \r
- public static <T> T createCache(Resource root, T object) {\r
- Map<Class<?>,Object> cache = caches.get(root);\r
- if(cache == null) {\r
- cache = new HashMap<Class<?>,Object>();\r
- caches.put(root, cache);\r
- }\r
- cache.put(object.getClass(), object);\r
- return object;\r
- }\r
- \r
- public static void clearCaches(Resource root) {\r
- caches.remove(root);\r
- }\r
- \r
- public static UUID makeIndexPending() {\r
- synchronized (indexPendings) {\r
- UUID guid = UUID.randomUUID();\r
- indexPendings.add(guid);\r
- return guid;\r
- }\r
- }\r
-\r
- public static void releaseIndexPending(UUID guid) {\r
- synchronized (indexPendings) {\r
- indexPendings.remove(guid);\r
- if (indexPendings.isEmpty()) {\r
- indexPendings.notifyAll();\r
- indexPendingCounter++;\r
- }\r
- }\r
- }\r
-\r
- public static int getIndexPendingCounter() {\r
- synchronized (indexPendings) {\r
- return indexPendingCounter;\r
- }\r
- }\r
- \r
- public static boolean isIndexPending() {\r
- synchronized (indexPendings) {\r
- return !indexPendings.isEmpty();\r
- }\r
- }\r
-\r
- private static long totalWaitTime = 0;\r
-\r
- public static void waitIndexPending() {\r
- long startTime = PROFILE ? System.nanoTime() : 0;\r
- boolean waited = false;\r
- int time = 1;\r
- synchronized (indexPendings) {\r
- while (isIndexPending()) {\r
- try {\r
- waited = true;\r
- indexPendings.wait(time++);\r
- if (time > 10) time = 10;\r
- } catch (InterruptedException e) {\r
- Logger.defaultLogError(e);\r
- }\r
- }\r
- }\r
- if (PROFILE) {\r
- if (waited) {\r
- long endTime = System.nanoTime();\r
- long waitTime = endTime - startTime;\r
- totalWaitTime += waitTime;\r
- System.out.println("Indexing wait time " + (waitTime*1e-6) + " ms (total " + (totalWaitTime*1e-6) + " ms)");\r
- }\r
- }\r
- }\r
-\r
- /**\r
- * @param graph an active database write handle to prove one is in a write\r
- * transaction and wants to disable dependencies indexing for this\r
- * transaction only.\r
- * @return previous value\r
- */\r
- public static boolean setDependenciesIndexingDisabled(WriteOnlyGraph graph, boolean disabled) {\r
- if (graph == null)\r
- throw new NullPointerException("null write graph");\r
- // TODO: check that graph is valid once made possible\r
- return dependenciesIndexingDisabled.getAndSet(disabled);\r
- }\r
-\r
- public static boolean resetDependenciesIndexingDisabled() {\r
- return dependenciesIndexingDisabled.compareAndSet(true, false);\r
- }\r
-\r
- public static boolean isDependenciesIndexingDisabled() {\r
- if (!useIndexing)\r
- return true;\r
- return dependenciesIndexingDisabled.get();\r
- }\r
- \r
- public static void setDefaultDependenciesIndexingEnabled(boolean b) {\r
- useIndexing = b;\r
- }\r
-\r
-}\r
+/*******************************************************************************
+ * Copyright (c) 2012 Association for Decentralized Information Management in
+ * Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.db.common;
+
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.UUID;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import org.simantics.db.Resource;
+import org.simantics.db.WriteOnlyGraph;
+import org.simantics.db.common.utils.Logger;
+
+/**
+ * A internal temporary store for database indexing-related low-level utilities
+ * and static data.
+ *
+ * This will be moved to more a more logical location at some point.
+ *
+ * @author Antti Villberg
+ * @author Tuukka Lehtonen
+ * @since 1.8
+ */
+public class Indexing {
+
+ private static final boolean PROFILE = false;
+
+ private static Set<UUID> indexPendings = new HashSet<UUID>();
+
+ private static AtomicBoolean dependenciesIndexingDisabled = new AtomicBoolean();
+
+ private static int indexPendingCounter = 0;
+
+ private static Map<Resource, Map<Class<?>, Object>> caches = new HashMap<Resource, Map<Class<?>, Object>>();
+
+ private static boolean useIndexing = true;
+
+ @SuppressWarnings("unchecked")
+ public static <T> T getCache(Resource root, Class<T> clazz) {
+ Map<Class<?>,Object> cache = caches.get(root);
+ if(cache == null) return null;
+ return (T)cache.get(clazz);
+ }
+
+ public static <T> T createCache(Resource root, T object) {
+ Map<Class<?>,Object> cache = caches.get(root);
+ if(cache == null) {
+ cache = new HashMap<Class<?>,Object>();
+ caches.put(root, cache);
+ }
+ cache.put(object.getClass(), object);
+ return object;
+ }
+
+ public static void clearCaches(Resource root) {
+ caches.remove(root);
+ }
+
+ public static UUID makeIndexPending() {
+ synchronized (indexPendings) {
+ UUID guid = UUID.randomUUID();
+ indexPendings.add(guid);
+ return guid;
+ }
+ }
+
+ public static void releaseIndexPending(UUID guid) {
+ synchronized (indexPendings) {
+ indexPendings.remove(guid);
+ if (indexPendings.isEmpty()) {
+ indexPendings.notifyAll();
+ indexPendingCounter++;
+ }
+ }
+ }
+
+ public static int getIndexPendingCounter() {
+ synchronized (indexPendings) {
+ return indexPendingCounter;
+ }
+ }
+
+ public static boolean isIndexPending() {
+ synchronized (indexPendings) {
+ return !indexPendings.isEmpty();
+ }
+ }
+
+ private static long totalWaitTime = 0;
+
+ public static void waitIndexPending() {
+ long startTime = PROFILE ? System.nanoTime() : 0;
+ boolean waited = false;
+ int time = 1;
+ synchronized (indexPendings) {
+ while (isIndexPending()) {
+ try {
+ waited = true;
+ indexPendings.wait(time++);
+ if (time > 10) time = 10;
+ } catch (InterruptedException e) {
+ Logger.defaultLogError(e);
+ }
+ }
+ }
+ if (PROFILE) {
+ if (waited) {
+ long endTime = System.nanoTime();
+ long waitTime = endTime - startTime;
+ totalWaitTime += waitTime;
+ System.out.println("Indexing wait time " + (waitTime*1e-6) + " ms (total " + (totalWaitTime*1e-6) + " ms)");
+ }
+ }
+ }
+
+ /**
+ * @param graph an active database write handle to prove one is in a write
+ * transaction and wants to disable dependencies indexing for this
+ * transaction only.
+ * @return previous value
+ */
+ public static boolean setDependenciesIndexingDisabled(WriteOnlyGraph graph, boolean disabled) {
+ if (graph == null)
+ throw new NullPointerException("null write graph");
+ // TODO: check that graph is valid once made possible
+ return dependenciesIndexingDisabled.getAndSet(disabled);
+ }
+
+ public static boolean resetDependenciesIndexingDisabled() {
+ return dependenciesIndexingDisabled.compareAndSet(true, false);
+ }
+
+ public static boolean isDependenciesIndexingDisabled() {
+ if (!useIndexing)
+ return true;
+ return dependenciesIndexingDisabled.get();
+ }
+
+ public static void setDefaultDependenciesIndexingEnabled(boolean b) {
+ useIndexing = b;
+ }
+
+}
Code Review / simantics / platform.git / blobdiff