1 /*
2  * Copyright (C) 2013 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 #include <pthread.h>
18 
19 #include <cstdio>
20 #include <iostream>
21 #include <vector>
22 
23 #include "android-base/logging.h"
24 #include "jni.h"
25 #include "jvmti.h"
26 
27 #include "scoped_local_ref.h"
28 #include "scoped_primitive_array.h"
29 
30 // Test infrastructure
31 #include "jvmti_helper.h"
32 #include "test_env.h"
33 
34 namespace art {
35 namespace Test1901Bytecodes {
36 
37 extern "C" JNIEXPORT jbyteArray JNICALL Java_art_Test1901_getBytecodes(JNIEnv* env,
38                                                                        jclass,
39                                                                        jobject jmethod) {
40   jmethodID method = env->FromReflectedMethod(jmethod);
41   if (env->ExceptionCheck()) {
42     return nullptr;
43   }
44   unsigned char* bytecodes = nullptr;
45   jint bytecodes_size = 0;
46   if (JvmtiErrorToException(env,
47                             jvmti_env,
48                             jvmti_env->GetBytecodes(method, &bytecodes_size, &bytecodes))) {
49     return nullptr;
50   }
51   jbyteArray out = env->NewByteArray(bytecodes_size);
52   if (env->ExceptionCheck()) {
53     return nullptr;
54   } else if (bytecodes_size == 0) {
55     return out;
56   }
57   jbyte* bytes = env->GetByteArrayElements(out, /* is_copy */ nullptr);
58   memcpy(bytes, bytecodes, bytecodes_size);
59   env->ReleaseByteArrayElements(out, bytes, 0);
60   return out;
61 }
62 
63 }  // namespace Test1901Bytecodes
64 }  // namespace art
65