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      1 /*
      2  * Licensed to the Apache Software Foundation (ASF) under one or more
      3  * contributor license agreements.  See the NOTICE file distributed with
      4  * this work for additional information regarding copyright ownership.
      5  * The ASF licenses this file to You under the Apache License, Version 2.0
      6  * (the "License"); you may not use this file except in compliance with
      7  * the License.  You may obtain a copy of the License at
      8  *
      9  *     http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  *  Unless required by applicable law or agreed to in writing, software
     12  *  distributed under the License is distributed on an "AS IS" BASIS,
     13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  *
     15  *  See the License for the specific language governing permissions and
     16  *  limitations under the License.
     17  */
     18 
     19 package org.apache.harmony.jpda.tests.jdwp.share;
     20 
     21 import org.apache.harmony.jpda.tests.framework.jdwp.Location;
     22 import org.apache.harmony.jpda.tests.framework.jdwp.ReplyPacket;
     23 import org.apache.harmony.jpda.tests.framework.jdwp.Value;
     24 import org.apache.harmony.jpda.tests.jdwp.share.debuggee.ProxyDebuggee;
     25 import org.apache.harmony.jpda.tests.share.JPDADebuggeeSynchronizer;
     26 
     27 public abstract class JDWPProxyTestCase extends JDWPSyncTestCase {
     28 
     29     @Override
     30     protected String getDebuggeeClassName() {
     31         return ProxyDebuggee.class.getName();
     32     }
     33 
     34     protected static class EventContext {
     35         private final long threadId;
     36         private final long frameId;
     37         private final Location location;
     38 
     39         public EventContext(long threadId, long frameId, Location location) {
     40             this.threadId = threadId;
     41             this.frameId = frameId;
     42             this.location = location;
     43         }
     44 
     45         public long getThreadId() {
     46             return threadId;
     47         }
     48 
     49         public long getFrameId() {
     50             return frameId;
     51         }
     52 
     53         public Location getLocation() {
     54             return location;
     55         }
     56     }
     57 
     58     protected EventContext stopInProxyMethod() {
     59         synchronizer.receiveMessage(JPDADebuggeeSynchronizer.SGNL_READY);
     60 
     61         // Set breakpoint.
     62         String debuggeeSignature = getDebuggeeClassSignature();
     63         long classId = getClassIDBySignature(debuggeeSignature);
     64         int requestId = debuggeeWrapper.vmMirror.setBreakpointAtMethodBegin(
     65                 classId, "breakpointMethodFromProxy");
     66 
     67         // Signal debuggee to continue execution.
     68         synchronizer.sendMessage(JPDADebuggeeSynchronizer.SGNL_CONTINUE);
     69 
     70         long eventThreadId = debuggeeWrapper.vmMirror.waitForBreakpoint(
     71                 requestId);
     72 
     73         String proxyClassSignature = "Ljava/lang/reflect/Proxy;";
     74         long proxyClassId = getClassIDBySignature(proxyClassSignature);
     75         assertTrue("No class " + proxyClassSignature, proxyClassId != -1);
     76 
     77         EventContext context = getFirstProxyFrameId(eventThreadId, proxyClassId);
     78         assertNotNull("Failed to find proxy frame", context);
     79 
     80         return context;
     81     }
     82 
     83     private EventContext getFirstProxyFrameId(long eventThreadId, long proxyClassId) {
     84         int framesCount = debuggeeWrapper.vmMirror.getFrameCount(eventThreadId);
     85         ReplyPacket reply = debuggeeWrapper.vmMirror.getThreadFrames(eventThreadId, 0, framesCount);
     86         framesCount = reply.getNextValueAsInt();
     87         for (int i = 0; i < framesCount; ++i) {
     88             long frameId = reply.getNextValueAsFrameID();
     89             Location location = reply.getNextValueAsLocation();
     90             // TODO dump frame for context.
     91             String className = getClassSignature(location.classID);
     92             String methodName = getMethodName(location.classID, location.methodID);
     93             logWriter.println("Frame #" + i + ": " + className + "." + methodName + "@" + location.index);
     94             if (location.classID != proxyClassId &&
     95                     IsProxy(location.classID, proxyClassId)) {
     96                 return new EventContext(eventThreadId, frameId, location);
     97             }
     98         }
     99         return null;
    100     }
    101 
    102     private boolean IsProxy(long typeId, long proxyClassId) {
    103         if (typeId == proxyClassId) {
    104             return true;
    105         } else if (typeId == 0) {
    106             return false;
    107         } else {
    108             return IsProxy(debuggeeWrapper.vmMirror.getSuperclassId(typeId),
    109                     proxyClassId);
    110         }
    111     }
    112 
    113     protected Value getExpectedProxyObjectValue() {
    114         String debuggeeSignature = getDebuggeeClassSignature();
    115         long classId = getClassIDBySignature(debuggeeSignature);
    116         long checkedProxyObjectFieldId = checkField(classId, "checkedProxyObject");
    117         long[] fieldIDs = new long[] { checkedProxyObjectFieldId };
    118         Value[] fieldValues = debuggeeWrapper.vmMirror.getReferenceTypeValues(classId, fieldIDs);
    119         Value value = fieldValues[0];
    120         logWriter.println("Proxy object is " + value.toString());
    121         return value;
    122     }
    123 }
    124