1 /*
   2  * Copyright (c) 1998, 2020, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 #include "util.h"
  27 #include "ClassLoaderReferenceImpl.h"
  28 #include "inStream.h"
  29 #include "outStream.h"
  30 
  31 static jboolean
  32 visibleClasses(PacketInputStream *in, PacketOutputStream *out)
  33 {
  34     JNIEnv *env = getEnv();
  35     jobject loader;
  36 
  37     loader = inStream_readClassLoaderRef(env, in);
  38     if (inStream_error(in)) {
  39         return JNI_TRUE;
  40     }
  41 
  42     WITH_LOCAL_REFS(env, 1) {
  43 
  44         jvmtiError error;
  45         jint count;
  46         jclass *classes;
  47         int i;
  48 
  49         error = allClassLoaderClasses(loader, &classes, &count);
  50         if (error != JVMTI_ERROR_NONE) {
  51             outStream_setError(out, map2jdwpError(error));
  52         } else {
  53             (void)outStream_writeInt(out, count);
  54             for (i = 0; i < count; i++) {
  55                 jbyte tag;
  56                 jclass clazz;
  57 
  58                 clazz = classes[i];
  59                 tag = referenceTypeTag(clazz);
  60 
  61                 (void)outStream_writeByte(out, tag);
  62                 (void)outStream_writeObjectRef(env, out, clazz);
  63             }
  64         }
  65 
  66         if ( classes != NULL )
  67             jvmtiDeallocate(classes);
  68 
  69      } END_WITH_LOCAL_REFS(env);
  70 
  71     return JNI_TRUE;
  72 }
  73 
  74 CommandSet ClassLoaderReference_Cmds = {
  75     1, "ClassLoaderReference",
  76     {
  77         {visibleClasses, "VisibleClasses"}
  78     }
  79 };