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Diffstat (limited to 'plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/internal/util/om/trace/PerfTracer.java')
-rw-r--r--plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/internal/util/om/trace/PerfTracer.java70
1 files changed, 70 insertions, 0 deletions
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/internal/util/om/trace/PerfTracer.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/internal/util/om/trace/PerfTracer.java
new file mode 100644
index 0000000000..65f54ba2a4
--- /dev/null
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/internal/util/om/trace/PerfTracer.java
@@ -0,0 +1,70 @@
+/***************************************************************************
+ * Copyright (c) 2004 - 2007 Eike Stepper, Germany.
+ * 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:
+ * Eike Stepper - initial API and implementation
+ **************************************************************************/
+package org.eclipse.net4j.internal.util.om.trace;
+
+import org.eclipse.net4j.util.om.trace.OMTracer;
+
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+
+/**
+ * @author Eike Stepper
+ */
+public class PerfTracer extends ContextTracer
+{
+ public static final long NOT_STARTED = 0L;
+
+ private ConcurrentMap<Object, Long> timers = new ConcurrentHashMap<Object, Long>();
+
+ public PerfTracer(OMTracer delegate, Class<?> context)
+ {
+ super(delegate, context);
+ }
+
+ public void start(Object object)
+ {
+ if (isEnabled())
+ {
+ timers.put(object, System.currentTimeMillis());
+ }
+ }
+
+ public long stop(Object object)
+ {
+ long duration = NOT_STARTED;
+ if (isEnabled())
+ {
+ Long timer = timers.remove(object);
+ if (timer != null)
+ {
+ duration = System.currentTimeMillis() - timer;
+ format("{0} = {1} millis", object, duration);
+ }
+ }
+
+ return duration;
+ }
+
+ public long getDuration(Object object)
+ {
+ long duration = NOT_STARTED;
+ if (isEnabled())
+ {
+ Long timer = timers.get(object);
+ if (timer != null)
+ {
+ duration = System.currentTimeMillis() - timer;
+ }
+ }
+
+ return duration;
+ }
+}

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