Andreas Gampe | db6dcb6 | 2016-09-13 09:05:59 -0700 | [diff] [blame] | 1 | /* Copyright (C) 2016 The Android Open Source Project |
| 2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 3 | * |
| 4 | * This file implements interfaces from the file jvmti.h. This implementation |
| 5 | * is licensed under the same terms as the file jvmti.h. The |
| 6 | * copyright and license information for the file jvmti.h follows. |
| 7 | * |
| 8 | * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. |
| 9 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 10 | * |
| 11 | * This code is free software; you can redistribute it and/or modify it |
| 12 | * under the terms of the GNU General Public License version 2 only, as |
| 13 | * published by the Free Software Foundation. Oracle designates this |
| 14 | * particular file as subject to the "Classpath" exception as provided |
| 15 | * by Oracle in the LICENSE file that accompanied this code. |
| 16 | * |
| 17 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 18 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 20 | * version 2 for more details (a copy is included in the LICENSE file that |
| 21 | * accompanied this code). |
| 22 | * |
| 23 | * You should have received a copy of the GNU General Public License version |
| 24 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 25 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 26 | * |
| 27 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| 28 | * or visit www.oracle.com if you need additional information or have any |
| 29 | * questions. |
| 30 | */ |
| 31 | |
| 32 | #ifndef ART_RUNTIME_OPENJDKJVMTI_ART_JVMTI_H_ |
| 33 | #define ART_RUNTIME_OPENJDKJVMTI_ART_JVMTI_H_ |
| 34 | |
Andreas Gampe | 77708d9 | 2016-10-07 11:48:21 -0700 | [diff] [blame] | 35 | #include <memory> |
| 36 | |
Andreas Gampe | db6dcb6 | 2016-09-13 09:05:59 -0700 | [diff] [blame] | 37 | #include <jni.h> |
| 38 | |
Andreas Gampe | 77708d9 | 2016-10-07 11:48:21 -0700 | [diff] [blame] | 39 | #include "base/casts.h" |
Andreas Gampe | 3c252f0 | 2016-10-27 18:25:17 -0700 | [diff] [blame] | 40 | #include "base/logging.h" |
| 41 | #include "base/macros.h" |
Andreas Gampe | 77708d9 | 2016-10-07 11:48:21 -0700 | [diff] [blame] | 42 | #include "events.h" |
Andreas Gampe | db6dcb6 | 2016-09-13 09:05:59 -0700 | [diff] [blame] | 43 | #include "java_vm_ext.h" |
| 44 | #include "jni_env_ext.h" |
| 45 | #include "jvmti.h" |
| 46 | |
| 47 | namespace openjdkjvmti { |
| 48 | |
| 49 | extern const jvmtiInterface_1 gJvmtiInterface; |
Alex Light | 6ac5750 | 2017-01-19 15:05:06 -0800 | [diff] [blame^] | 50 | extern EventHandler gEventHandler; |
Andreas Gampe | db6dcb6 | 2016-09-13 09:05:59 -0700 | [diff] [blame] | 51 | |
| 52 | // A structure that is a jvmtiEnv with additional information for the runtime. |
| 53 | struct ArtJvmTiEnv : public jvmtiEnv { |
| 54 | art::JavaVMExt* art_vm; |
| 55 | void* local_data; |
Alex Light | e657424 | 2016-08-17 09:56:24 -0700 | [diff] [blame] | 56 | jvmtiCapabilities capabilities; |
Andreas Gampe | db6dcb6 | 2016-09-13 09:05:59 -0700 | [diff] [blame] | 57 | |
Andreas Gampe | 77708d9 | 2016-10-07 11:48:21 -0700 | [diff] [blame] | 58 | EventMasks event_masks; |
| 59 | std::unique_ptr<jvmtiEventCallbacks> event_callbacks; |
| 60 | |
Alex Light | e657424 | 2016-08-17 09:56:24 -0700 | [diff] [blame] | 61 | explicit ArtJvmTiEnv(art::JavaVMExt* runtime) |
| 62 | : art_vm(runtime), local_data(nullptr), capabilities() { |
Andreas Gampe | db6dcb6 | 2016-09-13 09:05:59 -0700 | [diff] [blame] | 63 | functions = &gJvmtiInterface; |
| 64 | } |
Andreas Gampe | 77708d9 | 2016-10-07 11:48:21 -0700 | [diff] [blame] | 65 | |
| 66 | static ArtJvmTiEnv* AsArtJvmTiEnv(jvmtiEnv* env) { |
| 67 | return art::down_cast<ArtJvmTiEnv*>(env); |
| 68 | } |
Andreas Gampe | db6dcb6 | 2016-09-13 09:05:59 -0700 | [diff] [blame] | 69 | }; |
| 70 | |
| 71 | // Macro and constexpr to make error values less annoying to write. |
| 72 | #define ERR(e) JVMTI_ERROR_ ## e |
| 73 | static constexpr jvmtiError OK = JVMTI_ERROR_NONE; |
| 74 | |
| 75 | // Special error code for unimplemented functions in JVMTI |
| 76 | static constexpr jvmtiError ERR(NOT_IMPLEMENTED) = JVMTI_ERROR_NOT_AVAILABLE; |
| 77 | |
| 78 | static inline JNIEnv* GetJniEnv(jvmtiEnv* env) { |
| 79 | JNIEnv* ret_value = nullptr; |
| 80 | jint res = reinterpret_cast<ArtJvmTiEnv*>(env)->art_vm->GetEnv( |
| 81 | reinterpret_cast<void**>(&ret_value), JNI_VERSION_1_1); |
| 82 | if (res != JNI_OK) { |
| 83 | return nullptr; |
| 84 | } |
| 85 | return ret_value; |
| 86 | } |
| 87 | |
Andreas Gampe | 3c252f0 | 2016-10-27 18:25:17 -0700 | [diff] [blame] | 88 | class JvmtiDeleter { |
| 89 | public: |
| 90 | JvmtiDeleter() : env_(nullptr) {} |
| 91 | explicit JvmtiDeleter(jvmtiEnv* env) : env_(env) {} |
| 92 | |
| 93 | JvmtiDeleter(JvmtiDeleter&) = default; |
| 94 | JvmtiDeleter(JvmtiDeleter&&) = default; |
| 95 | JvmtiDeleter& operator=(const JvmtiDeleter&) = default; |
| 96 | |
| 97 | void operator()(unsigned char* ptr) const { |
| 98 | CHECK(env_ != nullptr); |
| 99 | jvmtiError ret = env_->Deallocate(ptr); |
| 100 | CHECK(ret == ERR(NONE)); |
| 101 | } |
| 102 | |
| 103 | private: |
| 104 | mutable jvmtiEnv* env_; |
| 105 | }; |
| 106 | |
| 107 | using JvmtiUniquePtr = std::unique_ptr<unsigned char, JvmtiDeleter>; |
| 108 | |
Andreas Gampe | 1bdaf73 | 2017-01-09 19:21:06 -0800 | [diff] [blame] | 109 | template <typename T> |
Andreas Gampe | 3c252f0 | 2016-10-27 18:25:17 -0700 | [diff] [blame] | 110 | ALWAYS_INLINE |
Andreas Gampe | 1bdaf73 | 2017-01-09 19:21:06 -0800 | [diff] [blame] | 111 | static inline JvmtiUniquePtr MakeJvmtiUniquePtr(jvmtiEnv* env, T* mem) { |
| 112 | return JvmtiUniquePtr(reinterpret_cast<unsigned char*>(mem), JvmtiDeleter(env)); |
Andreas Gampe | 3c252f0 | 2016-10-27 18:25:17 -0700 | [diff] [blame] | 113 | } |
| 114 | |
Andreas Gampe | e492ae3 | 2016-10-28 19:34:57 -0700 | [diff] [blame] | 115 | ALWAYS_INLINE |
| 116 | static inline jvmtiError CopyString(jvmtiEnv* env, const char* src, unsigned char** copy) { |
| 117 | size_t len = strlen(src) + 1; |
| 118 | unsigned char* buf; |
| 119 | jvmtiError ret = env->Allocate(len, &buf); |
| 120 | if (ret != ERR(NONE)) { |
| 121 | return ret; |
| 122 | } |
| 123 | strcpy(reinterpret_cast<char*>(buf), src); |
| 124 | *copy = buf; |
| 125 | return ret; |
| 126 | } |
| 127 | |
Alex Light | 6ac5750 | 2017-01-19 15:05:06 -0800 | [diff] [blame^] | 128 | struct ArtClassDefinition { |
| 129 | jclass klass; |
| 130 | jobject loader; |
| 131 | std::string name; |
| 132 | jobject protection_domain; |
| 133 | jint dex_len; |
| 134 | JvmtiUniquePtr dex_data; |
| 135 | bool modified; |
| 136 | |
| 137 | ArtClassDefinition() = default; |
| 138 | ArtClassDefinition(ArtClassDefinition&& o) = default; |
| 139 | |
| 140 | void SetNewDexData(ArtJvmTiEnv* env, jint new_dex_len, unsigned char* new_dex_data) { |
| 141 | if (new_dex_data == nullptr) { |
| 142 | return; |
| 143 | } else if (new_dex_data != dex_data.get() || new_dex_len != dex_len) { |
| 144 | modified = true; |
| 145 | dex_len = new_dex_len; |
| 146 | dex_data = MakeJvmtiUniquePtr(env, new_dex_data); |
| 147 | } |
| 148 | } |
| 149 | }; |
| 150 | |
Alex Light | e657424 | 2016-08-17 09:56:24 -0700 | [diff] [blame] | 151 | const jvmtiCapabilities kPotentialCapabilities = { |
| 152 | .can_tag_objects = 1, |
| 153 | .can_generate_field_modification_events = 0, |
| 154 | .can_generate_field_access_events = 0, |
| 155 | .can_get_bytecodes = 0, |
| 156 | .can_get_synthetic_attribute = 0, |
| 157 | .can_get_owned_monitor_info = 0, |
| 158 | .can_get_current_contended_monitor = 0, |
| 159 | .can_get_monitor_info = 0, |
| 160 | .can_pop_frame = 0, |
Alex Light | 6ac5750 | 2017-01-19 15:05:06 -0800 | [diff] [blame^] | 161 | .can_redefine_classes = 1, |
Alex Light | e657424 | 2016-08-17 09:56:24 -0700 | [diff] [blame] | 162 | .can_signal_thread = 0, |
| 163 | .can_get_source_file_name = 0, |
| 164 | .can_get_line_numbers = 0, |
| 165 | .can_get_source_debug_extension = 0, |
| 166 | .can_access_local_variables = 0, |
| 167 | .can_maintain_original_method_order = 0, |
| 168 | .can_generate_single_step_events = 0, |
| 169 | .can_generate_exception_events = 0, |
| 170 | .can_generate_frame_pop_events = 0, |
| 171 | .can_generate_breakpoint_events = 0, |
| 172 | .can_suspend = 0, |
| 173 | .can_redefine_any_class = 0, |
| 174 | .can_get_current_thread_cpu_time = 0, |
| 175 | .can_get_thread_cpu_time = 0, |
| 176 | .can_generate_method_entry_events = 0, |
| 177 | .can_generate_method_exit_events = 0, |
| 178 | .can_generate_all_class_hook_events = 0, |
| 179 | .can_generate_compiled_method_load_events = 0, |
| 180 | .can_generate_monitor_events = 0, |
| 181 | .can_generate_vm_object_alloc_events = 0, |
| 182 | .can_generate_native_method_bind_events = 0, |
| 183 | .can_generate_garbage_collection_events = 0, |
| 184 | .can_generate_object_free_events = 0, |
| 185 | .can_force_early_return = 0, |
| 186 | .can_get_owned_monitor_stack_depth_info = 0, |
| 187 | .can_get_constant_pool = 0, |
| 188 | .can_set_native_method_prefix = 0, |
Alex Light | 6ac5750 | 2017-01-19 15:05:06 -0800 | [diff] [blame^] | 189 | .can_retransform_classes = 1, |
Alex Light | e657424 | 2016-08-17 09:56:24 -0700 | [diff] [blame] | 190 | .can_retransform_any_class = 0, |
| 191 | .can_generate_resource_exhaustion_heap_events = 0, |
| 192 | .can_generate_resource_exhaustion_threads_events = 0, |
| 193 | }; |
| 194 | |
Andreas Gampe | db6dcb6 | 2016-09-13 09:05:59 -0700 | [diff] [blame] | 195 | } // namespace openjdkjvmti |
| 196 | |
| 197 | #endif // ART_RUNTIME_OPENJDKJVMTI_ART_JVMTI_H_ |