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      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_RUNTIME_OPENJDKJVMTI_TI_HEAP_H_
     18 #define ART_RUNTIME_OPENJDKJVMTI_TI_HEAP_H_
     19 
     20 #include "jvmti.h"
     21 
     22 namespace openjdkjvmti {
     23 
     24 class ObjectTagTable;
     25 
     26 class HeapUtil {
     27  public:
     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 
     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_RUNTIME_OPENJDKJVMTI_TI_HEAP_H_
     74