/* * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */package sun.tracing;import java.lang.reflect.Method;import java.lang.reflect.InvocationTargetException;import java.util.HashMap;import java.util.HashSet;import java.util.Set;import com.sun.tracing.ProviderFactory;import com.sun.tracing.Provider;import com.sun.tracing.Probe;/** * Factory class to create tracing Providers. * * This factory creates a "multiplex provider", which is a provider that * encapsulates a list of providers and whose probes trigger a corresponding * trigger in each of the encapsulated providers' probes. * * This is used when there are multiple tracing frameworks activated at once. * A user-defined provider gets implementation for each of the activated * frameworks and this multiplex framework is what is ultimately passed * back to the user. All probe triggers are multiplexed to each * active framework. * * @since 1.7 */public class MultiplexProviderFactory extends ProviderFactory { private Set<ProviderFactory> factories; public MultiplexProviderFactory(Set<ProviderFactory> factories) { this.factories = factories; } public <T extends Provider> T createProvider(Class<T> cls) { HashSet<Provider> providers = new HashSet<Provider>(); for (ProviderFactory factory : factories) { providers.add(factory.createProvider(cls)); } MultiplexProvider provider = new MultiplexProvider(cls, providers); provider.init(); return provider.newProxyInstance(); }}class MultiplexProvider extends ProviderSkeleton { private Set<Provider> providers; protected ProbeSkeleton createProbe(Method m) { return new MultiplexProbe(m, providers); } MultiplexProvider(Class<? extends Provider> type, Set<Provider> providers) { super(type); this.providers = providers; } public void dispose() { for (Provider p : providers) { p.dispose(); } super.dispose(); }}class MultiplexProbe extends ProbeSkeleton { private Set<Probe> probes; MultiplexProbe(Method m, Set<Provider> providers) { super(m.getParameterTypes()); probes = new HashSet<Probe>(); for (Provider p : providers) { Probe probe = p.getProbe(m); if (probe != null) { probes.add(probe); } } } public boolean isEnabled() { for (Probe p : probes) { if (p.isEnabled()) { return true; } } return false; } public void uncheckedTrigger(Object[] args) { for (Probe p : probes) { try { // try the fast path ProbeSkeleton ps = (ProbeSkeleton)p; ps.uncheckedTrigger(args); } catch (ClassCastException e) { // Probe.trigger takes an "Object ..." varargs parameter, // so we can't call it directly. try { Method m = Probe.class.getMethod( "trigger", Class.forName("[java.lang.Object")); m.invoke(p, args); } catch (Exception e1) { assert false; // This shouldn't happen } } } }}
/*
* Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.tracing;
import java.lang.reflect.Method;
import java.lang.reflect.InvocationTargetException;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Set;
import com.sun.tracing.ProviderFactory;
import com.sun.tracing.Provider;
import com.sun.tracing.Probe;
/**
* Factory class to create tracing Providers.
*
* This factory creates a "multiplex provider", which is a provider that
* encapsulates a list of providers and whose probes trigger a corresponding
* trigger in each of the encapsulated providers' probes.
*
* This is used when there are multiple tracing frameworks activated at once.
* A user-defined provider gets implementation for each of the activated
* frameworks and this multiplex framework is what is ultimately passed
* back to the user. All probe triggers are multiplexed to each
* active framework.
*
* @since 1.7
*/
public class MultiplexProviderFactory extends ProviderFactory {
private Set<ProviderFactory> factories;
public MultiplexProviderFactory(Set<ProviderFactory> factories) {
this.factories = factories;
}
public <T extends Provider> T createProvider(Class<T> cls) {
HashSet<Provider> providers = new HashSet<Provider>();
for (ProviderFactory factory : factories) {
providers.add(factory.createProvider(cls));
}
MultiplexProvider provider = new MultiplexProvider(cls, providers);
provider.init();
return provider.newProxyInstance();
}
}
class MultiplexProvider extends ProviderSkeleton {
private Set<Provider> providers;
protected ProbeSkeleton createProbe(Method m) {
return new MultiplexProbe(m, providers);
}
MultiplexProvider(Class<? extends Provider> type, Set<Provider> providers) {
super(type);
this.providers = providers;
}
public void dispose() {
for (Provider p : providers) {
p.dispose();
}
super.dispose();
}
}
class MultiplexProbe extends ProbeSkeleton {
private Set<Probe> probes;
MultiplexProbe(Method m, Set<Provider> providers) {
super(m.getParameterTypes());
probes = new HashSet<Probe>();
for (Provider p : providers) {
Probe probe = p.getProbe(m);
if (probe != null) {
probes.add(probe);
}
}
}
public boolean isEnabled() {
for (Probe p : probes) {
if (p.isEnabled()) {
return true;
}
}
return false;
}
public void uncheckedTrigger(Object[] args) {
for (Probe p : probes) {
try {
// try the fast path
ProbeSkeleton ps = (ProbeSkeleton)p;
ps.uncheckedTrigger(args);
} catch (ClassCastException e) {
// Probe.trigger takes an "Object ..." varargs parameter,
// so we can't call it directly.
try {
Method m = Probe.class.getMethod(
"trigger", Class.forName("[java.lang.Object"));
m.invoke(p, args);
} catch (Exception e1) {
assert false; // This shouldn't happen
}
}
}
}
}