121 lines
3.5 KiB
Java
121 lines
3.5 KiB
Java
/*
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* Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.tracing;
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import java.lang.reflect.Method;
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import java.io.PrintStream;
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import java.util.HashMap;
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import com.sun.tracing.ProviderFactory;
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import com.sun.tracing.Provider;
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import com.sun.tracing.ProviderName;
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import com.sun.tracing.Probe;
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import com.sun.tracing.ProbeName;
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/**
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* Factory class to create tracing Providers.
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*
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* This factory will create tracing instances that print to a PrintStream
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* when activated.
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*
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* @since 1.7
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*/
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public class PrintStreamProviderFactory extends ProviderFactory {
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private PrintStream stream;
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public PrintStreamProviderFactory(PrintStream stream) {
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this.stream = stream;
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}
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public <T extends Provider> T createProvider(Class<T> cls) {
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PrintStreamProvider provider = new PrintStreamProvider(cls, stream);
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provider.init();
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return provider.newProxyInstance();
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}
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}
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class PrintStreamProvider extends ProviderSkeleton {
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private PrintStream stream;
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private String providerName;
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protected ProbeSkeleton createProbe(Method m) {
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String probeName = getAnnotationString(m, ProbeName.class, m.getName());
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return new PrintStreamProbe(this, probeName, m.getParameterTypes());
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}
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PrintStreamProvider(Class<? extends Provider> type, PrintStream stream) {
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super(type);
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this.stream = stream;
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this.providerName = getProviderName();
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}
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PrintStream getStream() {
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return stream;
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}
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String getName() {
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return providerName;
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}
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}
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class PrintStreamProbe extends ProbeSkeleton {
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private PrintStreamProvider provider;
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private String name;
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PrintStreamProbe(PrintStreamProvider p, String name, Class<?>[] params) {
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super(params);
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this.provider = p;
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this.name = name;
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}
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public boolean isEnabled() {
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return true;
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}
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public void uncheckedTrigger(Object[] args) {
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StringBuffer sb = new StringBuffer();
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sb.append(provider.getName());
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sb.append(".");
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sb.append(name);
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sb.append("(");
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boolean first = true;
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for (Object o : args) {
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if (first == false) {
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sb.append(",");
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} else {
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first = false;
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}
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sb.append(o.toString());
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}
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sb.append(")");
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provider.getStream().println(sb.toString());
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}
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}
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