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 #ifndef ART_TEST_TI_AGENT_JVMTI_HELPER_H_ 18 #define ART_TEST_TI_AGENT_JVMTI_HELPER_H_ 19 20 #include <memory> 21 #include <ostream> 22 23 #include "jni.h" 24 #include "jvmti.h" 25 26 #include "android-base/logging.h" 27 28 namespace art { 29 30 // Get a standard set of capabilities for use in tests. 31 jvmtiCapabilities GetStandardCapabilities(); 32 33 // Add all the standard capabilities to the given env. 34 void SetStandardCapabilities(jvmtiEnv* env); 35 36 // Add all capabilities to the given env. 37 // TODO Remove this in the future. 38 void SetAllCapabilities(jvmtiEnv* env); 39 40 // Check whether the given error is NONE. If not, print out the corresponding error message 41 // and abort. 42 void CheckJvmtiError(jvmtiEnv* env, jvmtiError error); 43 44 // Convert the given error to a RuntimeException with a message derived from the error. Returns 45 // true on error, false if error is JVMTI_ERROR_NONE. 46 bool JvmtiErrorToException(JNIEnv* env, jvmtiEnv* jvmtienv, jvmtiError error); 47 48 class JvmtiDeleter { 49 public: 50 JvmtiDeleter() : env_(nullptr) {} 51 explicit JvmtiDeleter(jvmtiEnv* env) : env_(env) {} 52 53 JvmtiDeleter(JvmtiDeleter&) = default; 54 JvmtiDeleter(JvmtiDeleter&&) = default; 55 JvmtiDeleter& operator=(const JvmtiDeleter&) = default; 56 57 void operator()(unsigned char* ptr) const { 58 CHECK(env_ != nullptr); 59 jvmtiError ret = env_->Deallocate(ptr); 60 CheckJvmtiError(env_, ret); 61 } 62 63 private: 64 mutable jvmtiEnv* env_; 65 }; 66 67 using JvmtiUniquePtr = std::unique_ptr<unsigned char, JvmtiDeleter>; 68 69 template <typename T> 70 static inline JvmtiUniquePtr MakeJvmtiUniquePtr(jvmtiEnv* env, T* mem) { 71 return JvmtiUniquePtr(reinterpret_cast<unsigned char*>(mem), JvmtiDeleter(env)); 72 } 73 74 template <typename T> 75 static inline jvmtiError Deallocate(jvmtiEnv* env, T* mem) { 76 return env->Deallocate(reinterpret_cast<unsigned char*>(mem)); 77 } 78 79 // To print jvmtiError. Does not rely on GetErrorName, so is an approximation. 80 std::ostream& operator<<(std::ostream& os, const jvmtiError& rhs); 81 82 } // namespace art 83 84 #endif // ART_TEST_TI_AGENT_JVMTI_HELPER_H_ 85
