Andreas Gampe | 3c252f0 | 2016-10-27 18:25:17 -0700 | [diff] [blame] | 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 "methods.h" |
| 18 | |
| 19 | #include <stdio.h> |
| 20 | |
| 21 | #include "base/macros.h" |
| 22 | #include "jni.h" |
| 23 | #include "openjdkjvmti/jvmti.h" |
| 24 | #include "ScopedLocalRef.h" |
| 25 | |
Andreas Gampe | 336c3c3 | 2016-11-08 17:02:19 -0800 | [diff] [blame] | 26 | #include "ti-agent/common_helper.h" |
Andreas Gampe | 3c252f0 | 2016-10-27 18:25:17 -0700 | [diff] [blame] | 27 | #include "ti-agent/common_load.h" |
| 28 | |
| 29 | namespace art { |
| 30 | namespace Test910Methods { |
| 31 | |
| 32 | extern "C" JNIEXPORT jobjectArray JNICALL Java_Main_getMethodName( |
| 33 | JNIEnv* env, jclass klass ATTRIBUTE_UNUSED, jobject method) { |
| 34 | jmethodID id = env->FromReflectedMethod(method); |
| 35 | |
| 36 | char* name; |
| 37 | char* sig; |
| 38 | char* gen; |
| 39 | jvmtiError result = jvmti_env->GetMethodName(id, &name, &sig, &gen); |
| 40 | if (result != JVMTI_ERROR_NONE) { |
| 41 | char* err; |
| 42 | jvmti_env->GetErrorName(result, &err); |
| 43 | printf("Failure running GetMethodName: %s\n", err); |
Alex Light | 4196071 | 2017-01-06 14:44:23 -0800 | [diff] [blame] | 44 | jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(err)); |
Andreas Gampe | 3c252f0 | 2016-10-27 18:25:17 -0700 | [diff] [blame] | 45 | return nullptr; |
| 46 | } |
| 47 | |
Andreas Gampe | 336c3c3 | 2016-11-08 17:02:19 -0800 | [diff] [blame] | 48 | auto callback = [&](jint i) { |
| 49 | if (i == 0) { |
| 50 | return name == nullptr ? nullptr : env->NewStringUTF(name); |
| 51 | } else if (i == 1) { |
| 52 | return sig == nullptr ? nullptr : env->NewStringUTF(sig); |
| 53 | } else { |
| 54 | return gen == nullptr ? nullptr : env->NewStringUTF(gen); |
| 55 | } |
| 56 | }; |
| 57 | jobjectArray ret = CreateObjectArray(env, 3, "java/lang/String", callback); |
Andreas Gampe | 3c252f0 | 2016-10-27 18:25:17 -0700 | [diff] [blame] | 58 | |
| 59 | // Need to deallocate the strings. |
| 60 | if (name != nullptr) { |
| 61 | jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(name)); |
| 62 | } |
| 63 | if (sig != nullptr) { |
| 64 | jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(sig)); |
| 65 | } |
| 66 | if (gen != nullptr) { |
| 67 | jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(gen)); |
| 68 | } |
| 69 | |
Andreas Gampe | 862bdd8 | 2016-11-18 13:31:13 -0800 | [diff] [blame] | 70 | // Also run GetMethodName with all parameter pointers null to check for segfaults. |
| 71 | jvmtiError result2 = jvmti_env->GetMethodName(id, nullptr, nullptr, nullptr); |
| 72 | if (result2 != JVMTI_ERROR_NONE) { |
| 73 | char* err; |
| 74 | jvmti_env->GetErrorName(result2, &err); |
| 75 | printf("Failure running GetMethodName(null, null, null): %s\n", err); |
Alex Light | 4196071 | 2017-01-06 14:44:23 -0800 | [diff] [blame] | 76 | jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(err)); |
Andreas Gampe | 862bdd8 | 2016-11-18 13:31:13 -0800 | [diff] [blame] | 77 | return nullptr; |
| 78 | } |
| 79 | |
Andreas Gampe | 3c252f0 | 2016-10-27 18:25:17 -0700 | [diff] [blame] | 80 | return ret; |
| 81 | } |
| 82 | |
Andreas Gampe | 368a208 | 2016-10-28 17:33:13 -0700 | [diff] [blame] | 83 | extern "C" JNIEXPORT jclass JNICALL Java_Main_getMethodDeclaringClass( |
| 84 | JNIEnv* env, jclass klass ATTRIBUTE_UNUSED, jobject method) { |
| 85 | jmethodID id = env->FromReflectedMethod(method); |
| 86 | |
| 87 | jclass declaring_class; |
| 88 | jvmtiError result = jvmti_env->GetMethodDeclaringClass(id, &declaring_class); |
| 89 | if (result != JVMTI_ERROR_NONE) { |
| 90 | char* err; |
| 91 | jvmti_env->GetErrorName(result, &err); |
| 92 | printf("Failure running GetMethodDeclaringClass: %s\n", err); |
Alex Light | 4196071 | 2017-01-06 14:44:23 -0800 | [diff] [blame] | 93 | jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(err)); |
Andreas Gampe | 368a208 | 2016-10-28 17:33:13 -0700 | [diff] [blame] | 94 | return nullptr; |
| 95 | } |
| 96 | |
| 97 | return declaring_class; |
| 98 | } |
| 99 | |
Andreas Gampe | 36bcd4f | 2016-10-28 18:07:18 -0700 | [diff] [blame] | 100 | extern "C" JNIEXPORT jint JNICALL Java_Main_getMethodModifiers( |
| 101 | JNIEnv* env, jclass klass ATTRIBUTE_UNUSED, jobject method) { |
| 102 | jmethodID id = env->FromReflectedMethod(method); |
| 103 | |
| 104 | jint modifiers; |
| 105 | jvmtiError result = jvmti_env->GetMethodModifiers(id, &modifiers); |
| 106 | if (result != JVMTI_ERROR_NONE) { |
| 107 | char* err; |
| 108 | jvmti_env->GetErrorName(result, &err); |
| 109 | printf("Failure running GetMethodModifiers: %s\n", err); |
Alex Light | 4196071 | 2017-01-06 14:44:23 -0800 | [diff] [blame] | 110 | jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(err)); |
Andreas Gampe | 36bcd4f | 2016-10-28 18:07:18 -0700 | [diff] [blame] | 111 | return 0; |
| 112 | } |
| 113 | |
| 114 | return modifiers; |
| 115 | } |
| 116 | |
Andreas Gampe | f71832e | 2017-01-09 11:38:04 -0800 | [diff] [blame] | 117 | static bool ErrorToException(JNIEnv* env, jvmtiError error) { |
| 118 | if (error == JVMTI_ERROR_NONE) { |
| 119 | return false; |
| 120 | } |
| 121 | |
| 122 | ScopedLocalRef<jclass> rt_exception(env, env->FindClass("java/lang/RuntimeException")); |
| 123 | if (rt_exception.get() == nullptr) { |
| 124 | // CNFE should be pending. |
| 125 | return true; |
| 126 | } |
| 127 | |
| 128 | char* err; |
| 129 | jvmti_env->GetErrorName(error, &err); |
| 130 | |
| 131 | env->ThrowNew(rt_exception.get(), err); |
| 132 | |
| 133 | jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(err)); |
| 134 | return true; |
| 135 | } |
| 136 | |
| 137 | extern "C" JNIEXPORT jint JNICALL Java_Main_getMaxLocals( |
| 138 | JNIEnv* env, jclass klass ATTRIBUTE_UNUSED, jobject method) { |
| 139 | jmethodID id = env->FromReflectedMethod(method); |
| 140 | |
| 141 | jint max_locals; |
| 142 | jvmtiError result = jvmti_env->GetMaxLocals(id, &max_locals); |
| 143 | if (ErrorToException(env, result)) { |
| 144 | return -1; |
| 145 | } |
| 146 | |
| 147 | return max_locals; |
| 148 | } |
| 149 | |
| 150 | extern "C" JNIEXPORT jint JNICALL Java_Main_getArgumentsSize( |
| 151 | JNIEnv* env, jclass klass ATTRIBUTE_UNUSED, jobject method) { |
| 152 | jmethodID id = env->FromReflectedMethod(method); |
| 153 | |
| 154 | jint arguments; |
| 155 | jvmtiError result = jvmti_env->GetArgumentsSize(id, &arguments); |
| 156 | if (ErrorToException(env, result)) { |
| 157 | return -1; |
| 158 | } |
| 159 | |
| 160 | return arguments; |
| 161 | } |
| 162 | |
| 163 | extern "C" JNIEXPORT jlong JNICALL Java_Main_getMethodLocationStart( |
| 164 | JNIEnv* env, jclass klass ATTRIBUTE_UNUSED, jobject method) { |
| 165 | jmethodID id = env->FromReflectedMethod(method); |
| 166 | |
| 167 | jlong start; |
| 168 | jlong end; |
| 169 | jvmtiError result = jvmti_env->GetMethodLocation(id, &start, &end); |
| 170 | if (ErrorToException(env, result)) { |
| 171 | return -1; |
| 172 | } |
| 173 | |
| 174 | return start; |
| 175 | } |
| 176 | |
| 177 | extern "C" JNIEXPORT jlong JNICALL Java_Main_getMethodLocationEnd( |
| 178 | JNIEnv* env, jclass klass ATTRIBUTE_UNUSED, jobject method) { |
| 179 | jmethodID id = env->FromReflectedMethod(method); |
| 180 | |
| 181 | jlong start; |
| 182 | jlong end; |
| 183 | jvmtiError result = jvmti_env->GetMethodLocation(id, &start, &end); |
| 184 | if (ErrorToException(env, result)) { |
| 185 | return -1; |
| 186 | } |
| 187 | |
| 188 | return end; |
| 189 | } |
| 190 | |
Andreas Gampe | 3c252f0 | 2016-10-27 18:25:17 -0700 | [diff] [blame] | 191 | // Don't do anything |
| 192 | jint OnLoad(JavaVM* vm, |
| 193 | char* options ATTRIBUTE_UNUSED, |
| 194 | void* reserved ATTRIBUTE_UNUSED) { |
| 195 | if (vm->GetEnv(reinterpret_cast<void**>(&jvmti_env), JVMTI_VERSION_1_0)) { |
| 196 | printf("Unable to get jvmti env!\n"); |
| 197 | return 1; |
| 198 | } |
Alex Light | e657424 | 2016-08-17 09:56:24 -0700 | [diff] [blame] | 199 | SetAllCapabilities(jvmti_env); |
Andreas Gampe | 3c252f0 | 2016-10-27 18:25:17 -0700 | [diff] [blame] | 200 | return 0; |
| 201 | } |
| 202 | |
| 203 | } // namespace Test910Methods |
| 204 | } // namespace art |