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 "scoped_local_ref.h"
22 #include "test_env.h"
23
24 namespace art {
25 namespace Test1900TrackAlloc {
26
27 typedef jvmtiError (*GetGlobalState)(jvmtiEnv* env, jlong* allocated);
28
29 struct AllocTrackingData {
30 GetGlobalState get_global_state;
31 };
32
33 template <typename T>
Dealloc(T * t)34 static void Dealloc(T* t) {
35 jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(t));
36 }
37
38 template <typename T, typename ...Rest>
Dealloc(T * t,Rest...rs)39 static void Dealloc(T* t, Rest... rs) {
40 Dealloc(t);
41 Dealloc(rs...);
42 }
43
Java_art_Test1900_doDeallocate(JNIEnv * env,jclass,jlong jvmti_env_ptr,jlong ptr)44 extern "C" JNIEXPORT void JNICALL Java_art_Test1900_doDeallocate(JNIEnv* env,
45 jclass,
46 jlong jvmti_env_ptr,
47 jlong ptr) {
48 JvmtiErrorToException(env,
49 reinterpret_cast<jvmtiEnv*>(jvmti_env_ptr),
50 reinterpret_cast<jvmtiEnv*>(jvmti_env_ptr)->Deallocate(
51 reinterpret_cast<unsigned char*>(static_cast<intptr_t>(ptr))));
52 }
53
Java_art_Test1900_doAllocate(JNIEnv * env,jclass,jlong jvmti_env_ptr,jlong size)54 extern "C" JNIEXPORT jlong JNICALL Java_art_Test1900_doAllocate(JNIEnv* env,
55 jclass,
56 jlong jvmti_env_ptr,
57 jlong size) {
58 unsigned char* res = nullptr;
59 JvmtiErrorToException(env,
60 reinterpret_cast<jvmtiEnv*>(jvmti_env_ptr),
61 reinterpret_cast<jvmtiEnv*>(jvmti_env_ptr)->Allocate(size, &res));
62 return static_cast<jlong>(reinterpret_cast<intptr_t>(res));
63 }
64
Java_art_Test1900_getAmountAllocated(JNIEnv * env,jclass)65 extern "C" JNIEXPORT jlong JNICALL Java_art_Test1900_getAmountAllocated(JNIEnv* env, jclass) {
66 AllocTrackingData* data = nullptr;
67 if (JvmtiErrorToException(
68 env, jvmti_env, jvmti_env->GetEnvironmentLocalStorage(reinterpret_cast<void**>(&data)))) {
69 return -1;
70 }
71 if (data == nullptr || data->get_global_state == nullptr) {
72 ScopedLocalRef<jclass> rt_exception(env, env->FindClass("java/lang/RuntimeException"));
73 env->ThrowNew(rt_exception.get(), "Alloc tracking data not initialized.");
74 return -1;
75 }
76 jlong allocated = -1;
77 JvmtiErrorToException(env, jvmti_env, data->get_global_state(jvmti_env, &allocated));
78 return allocated;
79 }
80
DeallocParams(jvmtiParamInfo * params,jint n_params)81 static void DeallocParams(jvmtiParamInfo* params, jint n_params) {
82 for (jint i = 0; i < n_params; i++) {
83 Dealloc(params[i].name);
84 }
85 }
86
Java_art_Test1900_getDefaultJvmtiEnv(JNIEnv *,jclass)87 extern "C" JNIEXPORT jlong JNICALL Java_art_Test1900_getDefaultJvmtiEnv(JNIEnv*, jclass) {
88 return static_cast<jlong>(reinterpret_cast<intptr_t>(jvmti_env));
89 }
90
Java_art_Test1900_destroyJvmtiEnv(JNIEnv * env,jclass,jlong jvmti_env_ptr)91 extern "C" JNIEXPORT void Java_art_Test1900_destroyJvmtiEnv(JNIEnv* env,
92 jclass,
93 jlong jvmti_env_ptr) {
94 JvmtiErrorToException(env,
95 jvmti_env,
96 reinterpret_cast<jvmtiEnv*>(jvmti_env_ptr)->DisposeEnvironment());
97 }
98
Java_art_Test1900_newJvmtiEnv(JNIEnv * env,jclass)99 extern "C" JNIEXPORT jlong Java_art_Test1900_newJvmtiEnv(JNIEnv* env, jclass) {
100 JavaVM* vm = nullptr;
101 if (env->GetJavaVM(&vm) != 0) {
102 ScopedLocalRef<jclass> rt_exception(env, env->FindClass("java/lang/RuntimeException"));
103 env->ThrowNew(rt_exception.get(), "Unable to get JavaVM");
104 return -1;
105 }
106 jvmtiEnv* new_env = nullptr;
107 if (vm->GetEnv(reinterpret_cast<void**>(&new_env), JVMTI_VERSION_1_0) != 0) {
108 ScopedLocalRef<jclass> rt_exception(env, env->FindClass("java/lang/RuntimeException"));
109 env->ThrowNew(rt_exception.get(), "Unable to create new jvmtiEnv");
110 return -1;
111 }
112 return static_cast<jlong>(reinterpret_cast<intptr_t>(new_env));
113 }
114
Java_art_Test1900_initializeTest(JNIEnv * env,jclass)115 extern "C" JNIEXPORT void JNICALL Java_art_Test1900_initializeTest(JNIEnv* env, jclass) {
116 void* old_data = nullptr;
117 if (JvmtiErrorToException(env, jvmti_env, jvmti_env->GetEnvironmentLocalStorage(&old_data))) {
118 return;
119 } else if (old_data != nullptr) {
120 ScopedLocalRef<jclass> rt_exception(env, env->FindClass("java/lang/RuntimeException"));
121 env->ThrowNew(rt_exception.get(), "Environment already has local storage set!");
122 return;
123 }
124 AllocTrackingData* data = nullptr;
125 if (JvmtiErrorToException(env,
126 jvmti_env,
127 jvmti_env->Allocate(sizeof(AllocTrackingData),
128 reinterpret_cast<unsigned char**>(&data)))) {
129 return;
130 }
131 memset(data, 0, sizeof(AllocTrackingData));
132 // Get the extensions.
133 jint n_ext = 0;
134 jvmtiExtensionFunctionInfo* infos = nullptr;
135 if (JvmtiErrorToException(env, jvmti_env, jvmti_env->GetExtensionFunctions(&n_ext, &infos))) {
136 return;
137 }
138 for (jint i = 0; i < n_ext; i++) {
139 jvmtiExtensionFunctionInfo* cur_info = &infos[i];
140 if (strcmp("com.android.art.alloc.get_global_jvmti_allocation_state", cur_info->id) == 0) {
141 data->get_global_state = reinterpret_cast<GetGlobalState>(cur_info->func);
142 }
143 // Cleanup the cur_info
144 DeallocParams(cur_info->params, cur_info->param_count);
145 Dealloc(cur_info->id, cur_info->short_description, cur_info->params, cur_info->errors);
146 }
147 // Cleanup the array.
148 Dealloc(infos);
149 if (data->get_global_state == nullptr) {
150 ScopedLocalRef<jclass> rt_exception(env, env->FindClass("java/lang/RuntimeException"));
151 env->ThrowNew(rt_exception.get(), "Unable to find memory tracking extensions.");
152 return;
153 }
154 JvmtiErrorToException(env, jvmti_env, jvmti_env->SetEnvironmentLocalStorage(data));
155 return;
156 }
157
158 } // namespace Test1900TrackAlloc
159 } // namespace art
160