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 "ThreadGroupReferenceImpl.h"

 28 #include "inStream.h"
 29 #include "outStream.h"
 30 
 31 static jboolean
 32 name(PacketInputStream *in, PacketOutputStream *out)
 33 {
 34     JNIEnv *env;
 35     jthreadGroup group;
 36 
 37     env = getEnv();
 38 
 39     group = inStream_readThreadGroupRef(env, in);
 40     if (inStream_error(in)) {
 41         return JNI_TRUE;
 42     }
 43 
 44     WITH_LOCAL_REFS(env, 1) {
 45 
 46         jvmtiThreadGroupInfo info;
 47 
 48         (void)memset(&info, 0, sizeof(info));
 49         threadGroupInfo(group, &info);
 50         (void)outStream_writeString(out, info.name == NULL ? "" : info.name);
 51         if ( info.name != NULL )
 52             jvmtiDeallocate(info.name);
 53 
 54     } END_WITH_LOCAL_REFS(env);
 55 
 56     return JNI_TRUE;
 57 }
 58 
 59 static jboolean
 60 parent(PacketInputStream *in, PacketOutputStream *out)
 61 {
 62     JNIEnv *env;
 63     jthreadGroup group;
 64 
 65     env = getEnv();
 66 
 67     group = inStream_readThreadGroupRef(env, in);
 68     if (inStream_error(in)) {
 69         return JNI_TRUE;
 70     }
 71 
 72     WITH_LOCAL_REFS(env, 1) {
 73 
 74         jvmtiThreadGroupInfo info;
 75 
 76         (void)memset(&info, 0, sizeof(info));
 77         threadGroupInfo(group, &info);
 78         (void)outStream_writeObjectRef(env, out, info.parent);
 79         if ( info.name != NULL )
 80             jvmtiDeallocate(info.name);
 81 
 82     } END_WITH_LOCAL_REFS(env);
 83 
 84     return JNI_TRUE;
 85 }
 86 
 87 static jboolean
 88 children(PacketInputStream *in, PacketOutputStream *out)
 89 {
 90      JNIEnv *env;
 91      jthreadGroup group;

 92 
 93      env = getEnv();
 94 
 95      group = inStream_readThreadGroupRef(env, in);
 96      if (inStream_error(in)) {
 97          return JNI_TRUE;
 98      }
 99 
100      WITH_LOCAL_REFS(env, 1) {
101 
102          jvmtiError error;


103          jint threadCount;

104          jint groupCount;
105          jthread *theThreads;

106          jthread *theGroups;
107 
108          error = JVMTI_FUNC_PTR(gdata->jvmti,GetThreadGroupChildren)(gdata->jvmti, group,












109                                               &threadCount,&theThreads,
110                                               &groupCount, &theGroups);


111          if (error != JVMTI_ERROR_NONE) {
112              outStream_setError(out, map2jdwpError(error));
113          } else {
114 
115              int i;
116 
117              /* Squish out all of the debugger-spawned threads */
118              threadCount = filterDebugThreads(theThreads, threadCount);
119 
120              (void)outStream_writeInt(out, threadCount);
121              for (i = 0; i < threadCount; i++) {
122                  (void)outStream_writeObjectRef(env, out, theThreads[i]);
123              }



124              (void)outStream_writeInt(out, groupCount);
125              for (i = 0; i < groupCount; i++) {
126                  (void)outStream_writeObjectRef(env, out, theGroups[i]);
127              }
128 
129              jvmtiDeallocate(theGroups);
130              jvmtiDeallocate(theThreads);

131          }
132 
133      } END_WITH_LOCAL_REFS(env);
134 
135      return JNI_TRUE;
136 }
137 
138 Command ThreadGroupReference_Commands[] = {
139     {name, "Name"},
140     {parent, "Parent"},
141     {children, "Children"}
142 };
143 
144 DEBUG_DISPATCH_DEFINE_CMDSET(ThreadGroupReference)
--- EOF ---