1 /*
2  * Copyright (C) 2016 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef ART_OPENJDKJVMTI_TI_HEAP_H_
18 #define ART_OPENJDKJVMTI_TI_HEAP_H_
19 
20 #include "jvmti.h"
21 
22 namespace openjdkjvmti {
23 
24 class ObjectTagTable;
25 
26 class HeapUtil {
27  public:
HeapUtil(ObjectTagTable * tags)28   explicit HeapUtil(ObjectTagTable* tags) : tags_(tags) {
29   }
30 
31   jvmtiError GetLoadedClasses(jvmtiEnv* env, jint* class_count_ptr, jclass** classes_ptr);
32 
33   jvmtiError IterateThroughHeap(jvmtiEnv* env,
34                                 jint heap_filter,
35                                 jclass klass,
36                                 const jvmtiHeapCallbacks* callbacks,
37                                 const void* user_data);
38 
39   jvmtiError FollowReferences(jvmtiEnv* env,
40                               jint heap_filter,
41                               jclass klass,
42                               jobject initial_object,
43                               const jvmtiHeapCallbacks* callbacks,
44                               const void* user_data);
45 
46   static jvmtiError ForceGarbageCollection(jvmtiEnv* env);
47 
GetTags()48   ObjectTagTable* GetTags() {
49     return tags_;
50   }
51 
52   static void Register();
53   static void Unregister();
54 
55  private:
56   ObjectTagTable* tags_;
57 };
58 
59 class HeapExtensions {
60  public:
61   static jvmtiError JNICALL GetObjectHeapId(jvmtiEnv* env, jlong tag, jint* heap_id, ...);
62   static jvmtiError JNICALL GetHeapName(jvmtiEnv* env, jint heap_id, char** heap_name, ...);
63 
64   static jvmtiError JNICALL IterateThroughHeapExt(jvmtiEnv* env,
65                                                   jint heap_filter,
66                                                   jclass klass,
67                                                   const jvmtiHeapCallbacks* callbacks,
68                                                   const void* user_data);
69 };
70 
71 }  // namespace openjdkjvmti
72 
73 #endif  // ART_OPENJDKJVMTI_TI_HEAP_H_
74