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 #include "909-attach-agent/attach.h"
18
19 #include <jni.h>
20 #include <stdio.h>
21 #include <string.h>
22
23 #include "android-base/macros.h"
24
25 #include "jvmti.h"
26
27 namespace art {
28 namespace Test909AttachAgent {
29
Println(const char * c)30 static void Println(const char* c) {
31 fprintf(stdout, "%s\n", c);
32 fflush(stdout);
33 }
34
35 static constexpr jint kArtTiVersion = JVMTI_VERSION_1_2 | 0x40000000;
36
OnAttach(JavaVM * vm,char * options ATTRIBUTE_UNUSED,void * reserved ATTRIBUTE_UNUSED)37 jint OnAttach(JavaVM* vm,
38 char* options ATTRIBUTE_UNUSED,
39 void* reserved ATTRIBUTE_UNUSED) {
40 Println("Attached Agent for test 909-attach-agent");
41 jvmtiEnv* env = nullptr;
42 jvmtiEnv* env2 = nullptr;
43
44 #define CHECK_CALL_SUCCESS(c) \
45 do { \
46 if ((c) != JNI_OK) { \
47 Println("call " #c " did not succeed"); \
48 return -1; \
49 } \
50 } while (false)
51
52 if (vm->GetEnv(reinterpret_cast<void**>(&env), kArtTiVersion) == JNI_OK) {
53 Println("Created env for kArtTiVersion");
54 CHECK_CALL_SUCCESS(env->DisposeEnvironment());
55 env = nullptr;
56 } else {
57 Println("Failed to create env for kArtTiVersion");
58 return -1;
59 }
60 if (vm->GetEnv(reinterpret_cast<void**>(&env), JVMTI_VERSION_1_0) != JNI_OK) {
61 Println("Unable to create env for JVMTI_VERSION_1_0");
62 return 0;
63 }
64 CHECK_CALL_SUCCESS(vm->GetEnv(reinterpret_cast<void**>(&env2), JVMTI_VERSION_1_0));
65 if (env == env2) {
66 Println("GetEnv returned same environment twice!");
67 return -1;
68 }
69 unsigned char* local_data = nullptr;
70 CHECK_CALL_SUCCESS(env->Allocate(8, &local_data));
71 strcpy(reinterpret_cast<char*>(local_data), "hello!!");
72 CHECK_CALL_SUCCESS(env->SetEnvironmentLocalStorage(local_data));
73 unsigned char* get_data = nullptr;
74 CHECK_CALL_SUCCESS(env->GetEnvironmentLocalStorage(reinterpret_cast<void**>(&get_data)));
75 if (get_data != local_data) {
76 Println("Got different data from local storage then what was set!");
77 return -1;
78 }
79 CHECK_CALL_SUCCESS(env2->GetEnvironmentLocalStorage(reinterpret_cast<void**>(&get_data)));
80 if (get_data != nullptr) {
81 Println("env2 did not have nullptr local storage.");
82 return -1;
83 }
84 CHECK_CALL_SUCCESS(env->Deallocate(local_data));
85 jint version = 0;
86 CHECK_CALL_SUCCESS(env->GetVersionNumber(&version));
87 if ((version & JVMTI_VERSION_1) != JVMTI_VERSION_1) {
88 Println("Unexpected version number!");
89 return -1;
90 }
91 CHECK_CALL_SUCCESS(env->DisposeEnvironment());
92 CHECK_CALL_SUCCESS(env2->DisposeEnvironment());
93 #undef CHECK_CALL_SUCCESS
94 return JNI_OK;
95 }
96
97 } // namespace Test909AttachAgent
98 } // namespace art
99