org.jvnet.hk2.tracing.TracingUtilities Maven / Gradle / Ivy
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package org.jvnet.hk2.tracing;
import com.sun.hk2.component.ExistingSingletonInhabitant;
import org.jvnet.hk2.component.Inhabitant;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.List;
/**
* Utilities for tracing hk2 usage at runtime.
*
* @author Jerome Dochez
*/
public class TracingUtilities {
private final static boolean enabled = Boolean.getBoolean("hk2.module.tracestate");
public static boolean isEnabled() {
return enabled;
}
public static class Node {
final Inhabitant t;
final long inception = System.currentTimeMillis();
long completion;
final List children = new ArrayList();
public Node(Inhabitant t) {
this.t = t;
}
public void done() {
completion = System.currentTimeMillis();
}
public long elapsed() {
return completion-inception;
}
private void dump(String prefix, PrintStream ps) {
StringBuffer buffer = new StringBuffer();
for (int i=0;i");
buffer.append(" Inhabitant : ").append(t.typeName()).append(" initialized at ").
append(inception).append(" took ").append(elapsed());
ps.println(buffer);
for (Node child : new ArrayList(children)) {
child.dump(prefix+" ", ps);
}
}
}
public static final Node rootNode = new Node(new ExistingSingletonInhabitant(new TracingUtilities()));
public static void dump(PrintStream ps) {
for (Node node : new ArrayList(rootNode.children)) {
node.dump("", ps);
}
}
public static void dump(String typeName, PrintStream ps) {
dump(typeName, rootNode, ps);
}
public static void dump(String typeName, Node node, PrintStream ps) {
for (Node child : new ArrayList(node.children)) {
if (child.t.typeName().equals(typeName)) {
child.dump("", ps);
return;
} else {
dump(typeName, child, ps);
}
}
}
}