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 "jvmti.h"
18
19 // Test infrastructure
20 #include "jvmti_helper.h"
21 #include "nativehelper/scoped_local_ref.h"
22 #include "nativehelper/scoped_primitive_array.h"
23 #include "test_env.h"
24
25 namespace art {
26 namespace Test1940DdmExt {
27
28 using DdmHandleChunk = jvmtiError(*)(jvmtiEnv* env,
29 jint type_in,
30 jint len_in,
31 const jbyte* data_in,
32 jint* type_out,
33 jint* len_data_out,
34 jbyte** data_out);
35
36 struct DdmsTrackingData {
37 DdmHandleChunk send_ddm_chunk;
38 jclass test_klass;
39 jmethodID publish_method;
40 };
41
42 template <typename T>
Dealloc(T * t)43 static void Dealloc(T* t) {
44 jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(t));
45 }
46
47 template <typename T, typename ...Rest>
Dealloc(T * t,Rest...rs)48 static void Dealloc(T* t, Rest... rs) {
49 Dealloc(t);
50 Dealloc(rs...);
51 }
52
Java_art_Test1940_processChunk(JNIEnv * env,jclass,jobject chunk)53 extern "C" JNIEXPORT jobject JNICALL Java_art_Test1940_processChunk(JNIEnv* env,
54 jclass,
55 jobject chunk) {
56 DdmsTrackingData* data = nullptr;
57 if (JvmtiErrorToException(
58 env, jvmti_env, jvmti_env->GetEnvironmentLocalStorage(reinterpret_cast<void**>(&data)))) {
59 return nullptr;
60 }
61 CHECK(chunk != nullptr);
62 CHECK(data != nullptr);
63 CHECK(data->send_ddm_chunk != nullptr);
64 ScopedLocalRef<jclass> chunk_class(env, env->FindClass("org/apache/harmony/dalvik/ddmc/Chunk"));
65 if (env->ExceptionCheck()) {
66 return nullptr;
67 }
68 jfieldID type_field_id = env->GetFieldID(chunk_class.get(), "type", "I");
69 jfieldID offset_field_id = env->GetFieldID(chunk_class.get(), "offset", "I");
70 jfieldID length_field_id = env->GetFieldID(chunk_class.get(), "length", "I");
71 jfieldID data_field_id = env->GetFieldID(chunk_class.get(), "data", "[B");
72 jint type = env->GetIntField(chunk, type_field_id);
73 jint off = env->GetIntField(chunk, offset_field_id);
74 jint len = env->GetIntField(chunk, length_field_id);
75 ScopedLocalRef<jbyteArray> chunk_buf(
76 env, reinterpret_cast<jbyteArray>(env->GetObjectField(chunk, data_field_id)));
77 if (env->ExceptionCheck()) {
78 return nullptr;
79 }
80 ScopedByteArrayRO byte_data(env, chunk_buf.get());
81 jint out_type;
82 jint out_size;
83 jbyte* out_data;
84 if (JvmtiErrorToException(env, jvmti_env, data->send_ddm_chunk(jvmti_env,
85 type,
86 len,
87 &byte_data[off],
88 /*out*/&out_type,
89 /*out*/&out_size,
90 /*out*/&out_data))) {
91 return nullptr;
92 } else {
93 ScopedLocalRef<jbyteArray> chunk_data(env, env->NewByteArray(out_size));
94 env->SetByteArrayRegion(chunk_data.get(), 0, out_size, out_data);
95 Dealloc(out_data);
96 ScopedLocalRef<jobject> res(env, env->NewObject(chunk_class.get(),
97 env->GetMethodID(chunk_class.get(),
98 "<init>",
99 "(I[BII)V"),
100 out_type,
101 chunk_data.get(),
102 0,
103 out_size));
104 return res.release();
105 }
106 }
107
DeallocParams(jvmtiParamInfo * params,jint n_params)108 static void DeallocParams(jvmtiParamInfo* params, jint n_params) {
109 for (jint i = 0; i < n_params; i++) {
110 Dealloc(params[i].name);
111 }
112 }
113
PublishCB(jvmtiEnv * jvmti,JNIEnv * jnienv,jint type,jint size,jbyte * bytes)114 static void JNICALL PublishCB(jvmtiEnv* jvmti, JNIEnv* jnienv, jint type, jint size, jbyte* bytes) {
115 DdmsTrackingData* data = nullptr;
116 if (JvmtiErrorToException(jnienv, jvmti,
117 jvmti->GetEnvironmentLocalStorage(reinterpret_cast<void**>(&data)))) {
118 return;
119 }
120 ScopedLocalRef<jbyteArray> res(jnienv, jnienv->NewByteArray(size));
121 jnienv->SetByteArrayRegion(res.get(), 0, size, bytes);
122 jnienv->CallStaticVoidMethod(data->test_klass, data->publish_method, type, res.get());
123 }
124
Java_art_Test1940_initializeTest(JNIEnv * env,jclass,jclass method_klass,jobject publish_method)125 extern "C" JNIEXPORT void JNICALL Java_art_Test1940_initializeTest(JNIEnv* env,
126 jclass,
127 jclass method_klass,
128 jobject publish_method) {
129 void* old_data = nullptr;
130 if (JvmtiErrorToException(env, jvmti_env, jvmti_env->GetEnvironmentLocalStorage(&old_data))) {
131 return;
132 } else if (old_data != nullptr) {
133 ScopedLocalRef<jclass> rt_exception(env, env->FindClass("java/lang/RuntimeException"));
134 env->ThrowNew(rt_exception.get(), "Environment already has local storage set!");
135 return;
136 }
137 DdmsTrackingData* data = nullptr;
138 if (JvmtiErrorToException(env,
139 jvmti_env,
140 jvmti_env->Allocate(sizeof(DdmsTrackingData),
141 reinterpret_cast<unsigned char**>(&data)))) {
142 return;
143 }
144 memset(data, 0, sizeof(DdmsTrackingData));
145 data->test_klass = reinterpret_cast<jclass>(env->NewGlobalRef(method_klass));
146 data->publish_method = env->FromReflectedMethod(publish_method);
147 if (env->ExceptionCheck()) {
148 return;
149 }
150 // Get the extensions.
151 jint n_ext = 0;
152 jvmtiExtensionFunctionInfo* infos = nullptr;
153 if (JvmtiErrorToException(env, jvmti_env, jvmti_env->GetExtensionFunctions(&n_ext, &infos))) {
154 return;
155 }
156 for (jint i = 0; i < n_ext; i++) {
157 jvmtiExtensionFunctionInfo* cur_info = &infos[i];
158 if (strcmp("com.android.art.internal.ddm.process_chunk", cur_info->id) == 0) {
159 data->send_ddm_chunk = reinterpret_cast<DdmHandleChunk>(cur_info->func);
160 }
161 // Cleanup the cur_info
162 DeallocParams(cur_info->params, cur_info->param_count);
163 Dealloc(cur_info->id, cur_info->short_description, cur_info->params, cur_info->errors);
164 }
165 // Cleanup the array.
166 Dealloc(infos);
167 if (data->send_ddm_chunk == nullptr) {
168 ScopedLocalRef<jclass> rt_exception(env, env->FindClass("java/lang/RuntimeException"));
169 env->ThrowNew(rt_exception.get(), "Unable to find memory tracking extensions.");
170 return;
171 }
172 if (JvmtiErrorToException(env, jvmti_env, jvmti_env->SetEnvironmentLocalStorage(data))) {
173 return;
174 }
175
176 jint event_index = -1;
177 bool found_event = false;
178 jvmtiExtensionEventInfo* events = nullptr;
179 if (JvmtiErrorToException(env, jvmti_env, jvmti_env->GetExtensionEvents(&n_ext, &events))) {
180 return;
181 }
182 for (jint i = 0; i < n_ext; i++) {
183 jvmtiExtensionEventInfo* cur_info = &events[i];
184 if (strcmp("com.android.art.internal.ddm.publish_chunk", cur_info->id) == 0) {
185 found_event = true;
186 event_index = cur_info->extension_event_index;
187 }
188 // Cleanup the cur_info
189 DeallocParams(cur_info->params, cur_info->param_count);
190 Dealloc(cur_info->id, cur_info->short_description, cur_info->params);
191 }
192 // Cleanup the array.
193 Dealloc(events);
194 if (!found_event) {
195 ScopedLocalRef<jclass> rt_exception(env, env->FindClass("java/lang/RuntimeException"));
196 env->ThrowNew(rt_exception.get(), "Unable to find ddms extension event.");
197 return;
198 }
199 JvmtiErrorToException(env,
200 jvmti_env,
201 jvmti_env->SetExtensionEventCallback(
202 event_index, reinterpret_cast<jvmtiExtensionEvent>(PublishCB)));
203 return;
204 }
205
206 } // namespace Test1940DdmExt
207 } // namespace art
208