1 /*
2  * Copyright 2023 Code Intelligence GmbH
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 #include <iostream>
18 
19 #include "slicer/writer.h"
20 
21 class JazzerJvmtiAllocator : public dex::Writer::Allocator {
22  public:
JazzerJvmtiAllocator(jvmtiEnv * jvmti_env)23   JazzerJvmtiAllocator(jvmtiEnv* jvmti_env) : jvmti_env_(jvmti_env) {}
24 
Allocate(size_t size)25   virtual void* Allocate(size_t size) {
26     unsigned char* alloc = nullptr;
27     jvmtiError error_num = jvmti_env_->Allocate(size, &alloc);
28 
29     if (error_num != JVMTI_ERROR_NONE) {
30       std::cerr << "JazzerJvmtiAllocator Allocation error. JVMTI error: "
31                 << error_num << std::endl;
32     }
33 
34     return (void*)alloc;
35   }
36 
Free(void * ptr)37   virtual void Free(void* ptr) {
38     if (ptr == nullptr) {
39       return;
40     }
41 
42     jvmtiError error_num = jvmti_env_->Deallocate((unsigned char*)ptr);
43 
44     if (error_num != JVMTI_ERROR_NONE) {
45       std::cout << "JazzerJvmtiAllocator Free error. JVMTI error: " << error_num
46                 << std::endl;
47     }
48   }
49 
50  private:
51   jvmtiEnv* jvmti_env_;
52 };
53