1 /* 2 * Copyright (C) 2017 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 <jni.h> 18 #include <jvmti.h> 19 20 #include "android-base/logging.h" 21 #include "jni_binder.h" 22 #include "jvmti_helper.h" 23 #include "scoped_local_ref.h" 24 #include "test_env.h" 25 26 namespace art { 27 28 static void InformMainAttach(jvmtiEnv* jenv, 29 JNIEnv* env, 30 const char* class_name, 31 const char* method_name) { 32 // Use JNI to load the class. 33 ScopedLocalRef<jclass> klass(env, FindClass(jenv, env, class_name, nullptr)); 34 CHECK(klass.get() != nullptr) << class_name; 35 36 jmethodID method = env->GetStaticMethodID(klass.get(), method_name, "()V"); 37 CHECK(method != nullptr); 38 39 env->CallStaticVoidMethod(klass.get(), method); 40 } 41 42 static constexpr const char* kMainClass = "art/CtsMain"; 43 static constexpr const char* kMainClassStartup = "startup"; 44 45 extern "C" JNIEXPORT jint JNICALL Agent_OnLoad(JavaVM* vm, 46 char* options ATTRIBUTE_UNUSED, 47 void* reserved ATTRIBUTE_UNUSED) { 48 if (vm->GetEnv(reinterpret_cast<void**>(&jvmti_env), JVMTI_VERSION_1_0) != 0) { 49 LOG(FATAL) << "Could not get shared jvmtiEnv"; 50 } 51 52 SetStandardCapabilities(jvmti_env); 53 return 0; 54 } 55 56 extern "C" JNIEXPORT jint JNICALL Agent_OnAttach(JavaVM* vm, 57 char* options ATTRIBUTE_UNUSED, 58 void* reserved ATTRIBUTE_UNUSED) { 59 JNIEnv* env; 60 CHECK_EQ(0, vm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION_1_6)) 61 << "Could not get JNIEnv"; 62 63 if (vm->GetEnv(reinterpret_cast<void**>(&jvmti_env), JVMTI_VERSION_1_0) != 0) { 64 LOG(FATAL) << "Could not get shared jvmtiEnv"; 65 } 66 67 SetStandardCapabilities(jvmti_env); 68 InformMainAttach(jvmti_env, env, kMainClass, kMainClassStartup); 69 return 0; 70 } 71 72 } // namespace art 73
