Alex Light | 3f33c0a | 2017-11-08 10:17:37 -0800 | [diff] [blame] | 1 | /* Copyright (C) 2017 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 | #include <vector> |
| 33 | |
| 34 | #include "ti_extension.h" |
| 35 | |
| 36 | #include "art_jvmti.h" |
Alex Light | 8c2b929 | 2017-11-09 13:21:01 -0800 | [diff] [blame] | 37 | #include "events.h" |
Alex Light | 3f33c0a | 2017-11-08 10:17:37 -0800 | [diff] [blame] | 38 | #include "ti_allocator.h" |
Alex Light | c758875 | 2018-02-20 11:15:54 -0800 | [diff] [blame] | 39 | #include "ti_class.h" |
Alex Light | 8c2b929 | 2017-11-09 13:21:01 -0800 | [diff] [blame] | 40 | #include "ti_ddms.h" |
Alex Light | 3f33c0a | 2017-11-08 10:17:37 -0800 | [diff] [blame] | 41 | #include "ti_heap.h" |
Alex Light | ae45cbb | 2018-10-18 15:49:56 -0700 | [diff] [blame] | 42 | #include "ti_logging.h" |
Alex Light | c98f83e | 2018-07-26 08:28:36 -0700 | [diff] [blame] | 43 | #include "ti_monitor.h" |
Alex Light | ae45cbb | 2018-10-18 15:49:56 -0700 | [diff] [blame] | 44 | |
Alex Light | 8c2b929 | 2017-11-09 13:21:01 -0800 | [diff] [blame] | 45 | #include "thread-inl.h" |
Alex Light | 3f33c0a | 2017-11-08 10:17:37 -0800 | [diff] [blame] | 46 | |
| 47 | namespace openjdkjvmti { |
| 48 | |
| 49 | struct CParamInfo { |
| 50 | const char* name; |
| 51 | jvmtiParamKind kind; |
| 52 | jvmtiParamTypes base_type; |
| 53 | jboolean null_ok; |
| 54 | |
| 55 | jvmtiParamInfo ToParamInfo(jvmtiEnv* env, |
| 56 | /*out*/std::vector<JvmtiUniquePtr<char[]>>* char_buffers, |
| 57 | /*out*/jvmtiError* err) const { |
| 58 | JvmtiUniquePtr<char[]> param_name = CopyString(env, name, err); |
| 59 | char* name_ptr = param_name.get(); |
| 60 | char_buffers->push_back(std::move(param_name)); |
Igor Murashkin | 5573c37 | 2017-11-16 13:34:30 -0800 | [diff] [blame] | 61 | return jvmtiParamInfo{ name_ptr, kind, base_type, null_ok }; |
Alex Light | 3f33c0a | 2017-11-08 10:17:37 -0800 | [diff] [blame] | 62 | } |
| 63 | }; |
| 64 | |
| 65 | jvmtiError ExtensionUtil::GetExtensionFunctions(jvmtiEnv* env, |
| 66 | jint* extension_count_ptr, |
| 67 | jvmtiExtensionFunctionInfo** extensions) { |
| 68 | if (extension_count_ptr == nullptr || extensions == nullptr) { |
| 69 | return ERR(NULL_POINTER); |
| 70 | } |
| 71 | |
| 72 | std::vector<jvmtiExtensionFunctionInfo> ext_vector; |
| 73 | |
| 74 | // Holders for allocated values. |
| 75 | std::vector<JvmtiUniquePtr<char[]>> char_buffers; |
| 76 | std::vector<JvmtiUniquePtr<jvmtiParamInfo[]>> param_buffers; |
| 77 | std::vector<JvmtiUniquePtr<jvmtiError[]>> error_buffers; |
| 78 | |
| 79 | auto add_extension = [&](jvmtiExtensionFunction func, |
| 80 | const char* id, |
| 81 | const char* short_description, |
| 82 | const std::vector<CParamInfo>& params, |
| 83 | const std::vector<jvmtiError>& errors) { |
| 84 | jvmtiExtensionFunctionInfo func_info; |
| 85 | jvmtiError error; |
| 86 | |
| 87 | func_info.func = func; |
| 88 | |
| 89 | JvmtiUniquePtr<char[]> id_ptr = CopyString(env, id, &error); |
| 90 | if (id_ptr == nullptr) { |
| 91 | return error; |
| 92 | } |
| 93 | func_info.id = id_ptr.get(); |
| 94 | char_buffers.push_back(std::move(id_ptr)); |
| 95 | |
| 96 | JvmtiUniquePtr<char[]> descr = CopyString(env, short_description, &error); |
| 97 | if (descr == nullptr) { |
| 98 | return error; |
| 99 | } |
| 100 | func_info.short_description = descr.get(); |
| 101 | char_buffers.push_back(std::move(descr)); |
| 102 | |
| 103 | func_info.param_count = params.size(); |
| 104 | if (!params.empty()) { |
| 105 | JvmtiUniquePtr<jvmtiParamInfo[]> params_ptr = |
| 106 | AllocJvmtiUniquePtr<jvmtiParamInfo[]>(env, params.size(), &error); |
| 107 | if (params_ptr == nullptr) { |
| 108 | return error; |
| 109 | } |
| 110 | func_info.params = params_ptr.get(); |
| 111 | param_buffers.push_back(std::move(params_ptr)); |
| 112 | |
| 113 | for (jint i = 0; i != func_info.param_count; ++i) { |
| 114 | func_info.params[i] = params[i].ToParamInfo(env, &char_buffers, &error); |
| 115 | if (error != OK) { |
| 116 | return error; |
| 117 | } |
| 118 | } |
| 119 | } else { |
| 120 | func_info.params = nullptr; |
| 121 | } |
| 122 | |
| 123 | func_info.error_count = errors.size(); |
| 124 | if (!errors.empty()) { |
| 125 | JvmtiUniquePtr<jvmtiError[]> errors_ptr = |
| 126 | AllocJvmtiUniquePtr<jvmtiError[]>(env, errors.size(), &error); |
| 127 | if (errors_ptr == nullptr) { |
| 128 | return error; |
| 129 | } |
| 130 | func_info.errors = errors_ptr.get(); |
| 131 | error_buffers.push_back(std::move(errors_ptr)); |
| 132 | |
| 133 | for (jint i = 0; i != func_info.error_count; ++i) { |
| 134 | func_info.errors[i] = errors[i]; |
| 135 | } |
| 136 | } else { |
| 137 | func_info.errors = nullptr; |
| 138 | } |
| 139 | |
| 140 | ext_vector.push_back(func_info); |
| 141 | |
| 142 | return ERR(NONE); |
| 143 | }; |
| 144 | |
| 145 | jvmtiError error; |
| 146 | |
| 147 | // Heap extensions. |
| 148 | error = add_extension( |
| 149 | reinterpret_cast<jvmtiExtensionFunction>(HeapExtensions::GetObjectHeapId), |
| 150 | "com.android.art.heap.get_object_heap_id", |
| 151 | "Retrieve the heap id of the the object tagged with the given argument. An " |
| 152 | "arbitrary object is chosen if multiple objects exist with the same tag.", |
Igor Murashkin | 5573c37 | 2017-11-16 13:34:30 -0800 | [diff] [blame] | 153 | { |
Alex Light | 3f33c0a | 2017-11-08 10:17:37 -0800 | [diff] [blame] | 154 | { "tag", JVMTI_KIND_IN, JVMTI_TYPE_JLONG, false}, |
| 155 | { "heap_id", JVMTI_KIND_OUT, JVMTI_TYPE_JINT, false} |
| 156 | }, |
| 157 | { JVMTI_ERROR_NOT_FOUND }); |
| 158 | if (error != ERR(NONE)) { |
| 159 | return error; |
| 160 | } |
| 161 | |
| 162 | error = add_extension( |
| 163 | reinterpret_cast<jvmtiExtensionFunction>(HeapExtensions::GetHeapName), |
| 164 | "com.android.art.heap.get_heap_name", |
| 165 | "Retrieve the name of the heap with the given id.", |
Igor Murashkin | 5573c37 | 2017-11-16 13:34:30 -0800 | [diff] [blame] | 166 | { |
Alex Light | 3f33c0a | 2017-11-08 10:17:37 -0800 | [diff] [blame] | 167 | { "heap_id", JVMTI_KIND_IN, JVMTI_TYPE_JINT, false}, |
| 168 | { "heap_name", JVMTI_KIND_ALLOC_BUF, JVMTI_TYPE_CCHAR, false} |
| 169 | }, |
| 170 | { JVMTI_ERROR_ILLEGAL_ARGUMENT }); |
| 171 | if (error != ERR(NONE)) { |
| 172 | return error; |
| 173 | } |
| 174 | |
| 175 | error = add_extension( |
| 176 | reinterpret_cast<jvmtiExtensionFunction>(HeapExtensions::IterateThroughHeapExt), |
| 177 | "com.android.art.heap.iterate_through_heap_ext", |
| 178 | "Iterate through a heap. This is equivalent to the standard IterateThroughHeap function," |
| 179 | " except for additionally passing the heap id of the current object. The jvmtiHeapCallbacks" |
| 180 | " structure is reused, with the callbacks field overloaded to a signature of " |
| 181 | "jint (*)(jlong, jlong, jlong*, jint length, void*, jint).", |
Igor Murashkin | 5573c37 | 2017-11-16 13:34:30 -0800 | [diff] [blame] | 182 | { |
Alex Light | 3f33c0a | 2017-11-08 10:17:37 -0800 | [diff] [blame] | 183 | { "heap_filter", JVMTI_KIND_IN, JVMTI_TYPE_JINT, false}, |
| 184 | { "klass", JVMTI_KIND_IN, JVMTI_TYPE_JCLASS, true}, |
| 185 | { "callbacks", JVMTI_KIND_IN_PTR, JVMTI_TYPE_CVOID, false}, |
| 186 | { "user_data", JVMTI_KIND_IN_PTR, JVMTI_TYPE_CVOID, true} |
| 187 | }, |
Igor Murashkin | 5573c37 | 2017-11-16 13:34:30 -0800 | [diff] [blame] | 188 | { |
Alex Light | 3f33c0a | 2017-11-08 10:17:37 -0800 | [diff] [blame] | 189 | ERR(MUST_POSSESS_CAPABILITY), |
| 190 | ERR(INVALID_CLASS), |
| 191 | ERR(NULL_POINTER), |
| 192 | }); |
| 193 | if (error != ERR(NONE)) { |
| 194 | return error; |
| 195 | } |
| 196 | |
| 197 | error = add_extension( |
| 198 | reinterpret_cast<jvmtiExtensionFunction>(AllocUtil::GetGlobalJvmtiAllocationState), |
| 199 | "com.android.art.alloc.get_global_jvmti_allocation_state", |
| 200 | "Returns the total amount of memory currently allocated by all jvmtiEnvs through the" |
| 201 | " 'Allocate' jvmti function. This does not include any memory that has been deallocated" |
| 202 | " through the 'Deallocate' function. This number is approximate and might not correspond" |
| 203 | " exactly to the sum of the sizes of all not freed allocations.", |
Igor Murashkin | 5573c37 | 2017-11-16 13:34:30 -0800 | [diff] [blame] | 204 | { |
Alex Light | 3f33c0a | 2017-11-08 10:17:37 -0800 | [diff] [blame] | 205 | { "currently_allocated", JVMTI_KIND_OUT, JVMTI_TYPE_JLONG, false}, |
| 206 | }, |
| 207 | { ERR(NULL_POINTER) }); |
| 208 | if (error != ERR(NONE)) { |
| 209 | return error; |
| 210 | } |
| 211 | |
Alex Light | 8c2b929 | 2017-11-09 13:21:01 -0800 | [diff] [blame] | 212 | // DDMS extension |
| 213 | error = add_extension( |
| 214 | reinterpret_cast<jvmtiExtensionFunction>(DDMSUtil::HandleChunk), |
| 215 | "com.android.art.internal.ddm.process_chunk", |
| 216 | "Handles a single ddms chunk request and returns a response. The reply data is in the ddms" |
| 217 | " chunk format. It returns the processed chunk. This is provided for backwards compatibility" |
| 218 | " reasons only. Agents should avoid making use of this extension when possible and instead" |
| 219 | " use the other JVMTI entrypoints explicitly.", |
Igor Murashkin | 5573c37 | 2017-11-16 13:34:30 -0800 | [diff] [blame] | 220 | { |
Alex Light | 8c2b929 | 2017-11-09 13:21:01 -0800 | [diff] [blame] | 221 | { "type_in", JVMTI_KIND_IN, JVMTI_TYPE_JINT, false }, |
| 222 | { "length_in", JVMTI_KIND_IN, JVMTI_TYPE_JINT, false }, |
Alex Light | 6f2a634 | 2017-12-12 09:55:05 -0800 | [diff] [blame] | 223 | { "data_in", JVMTI_KIND_IN_BUF, JVMTI_TYPE_JBYTE, true }, |
Alex Light | 8c2b929 | 2017-11-09 13:21:01 -0800 | [diff] [blame] | 224 | { "type_out", JVMTI_KIND_OUT, JVMTI_TYPE_JINT, false }, |
| 225 | { "data_len_out", JVMTI_KIND_OUT, JVMTI_TYPE_JINT, false }, |
| 226 | { "data_out", JVMTI_KIND_ALLOC_BUF, JVMTI_TYPE_JBYTE, false } |
| 227 | }, |
| 228 | { ERR(NULL_POINTER), ERR(ILLEGAL_ARGUMENT), ERR(OUT_OF_MEMORY) }); |
| 229 | if (error != ERR(NONE)) { |
| 230 | return error; |
| 231 | } |
| 232 | |
Alex Light | c758875 | 2018-02-20 11:15:54 -0800 | [diff] [blame] | 233 | // GetClassLoaderClassDescriptors extension |
| 234 | error = add_extension( |
| 235 | reinterpret_cast<jvmtiExtensionFunction>(ClassUtil::GetClassLoaderClassDescriptors), |
| 236 | "com.android.art.class.get_class_loader_class_descriptors", |
| 237 | "Retrieves a list of all the classes (as class descriptors) that the given class loader is" |
| 238 | " capable of being the defining class loader for. The return format is a list of" |
| 239 | " null-terminated descriptor strings of the form \"L/java/lang/Object;\". Each descriptor" |
| 240 | " will be in the list at most once. If the class_loader is null the bootclassloader will be" |
| 241 | " used. If the class_loader is not null it must either be a java.lang.BootClassLoader, a" |
| 242 | " dalvik.system.BaseDexClassLoader or a derived type. The data_out list and all elements" |
| 243 | " must be deallocated by the caller.", |
| 244 | { |
| 245 | { "class_loader", JVMTI_KIND_IN, JVMTI_TYPE_JOBJECT, true }, |
| 246 | { "class_descriptor_count_out", JVMTI_KIND_OUT, JVMTI_TYPE_JINT, false }, |
| 247 | { "data_out", JVMTI_KIND_ALLOC_ALLOC_BUF, JVMTI_TYPE_CCHAR, false }, |
| 248 | }, |
| 249 | { |
| 250 | ERR(NULL_POINTER), |
| 251 | ERR(ILLEGAL_ARGUMENT), |
| 252 | ERR(OUT_OF_MEMORY), |
| 253 | ERR(NOT_IMPLEMENTED), |
| 254 | }); |
| 255 | if (error != ERR(NONE)) { |
| 256 | return error; |
| 257 | } |
Alex Light | c98f83e | 2018-07-26 08:28:36 -0700 | [diff] [blame] | 258 | |
| 259 | // Raw monitors no suspend |
| 260 | error = add_extension( |
| 261 | reinterpret_cast<jvmtiExtensionFunction>(MonitorUtil::RawMonitorEnterNoSuspend), |
| 262 | "com.android.art.concurrent.raw_monitor_enter_no_suspend", |
| 263 | "Normally entering a monitor will not return until both the monitor is locked and the" |
| 264 | " current thread is not suspended. This method will return once the monitor is locked" |
| 265 | " even if the thread is suspended. Note that using rawMonitorWait will wait until the" |
| 266 | " thread is not suspended again on wakeup and so should be avoided.", |
| 267 | { |
| 268 | { "raw_monitor", JVMTI_KIND_IN_PTR, JVMTI_TYPE_CVOID, false }, |
| 269 | }, |
| 270 | { |
| 271 | ERR(NULL_POINTER), |
| 272 | ERR(INVALID_MONITOR), |
| 273 | }); |
| 274 | if (error != ERR(NONE)) { |
| 275 | return error; |
| 276 | } |
Alex Light | ae45cbb | 2018-10-18 15:49:56 -0700 | [diff] [blame] | 277 | |
| 278 | // GetLastError extension |
| 279 | error = add_extension( |
| 280 | reinterpret_cast<jvmtiExtensionFunction>(LogUtil::GetLastError), |
| 281 | "com.android.art.misc.get_last_error_message", |
| 282 | "In some cases the jvmti plugin will log data about errors to the android logcat. These can" |
| 283 | " be useful to tools so we make (some) of the messages available here as well. This will" |
| 284 | " fill the given 'msg' buffer with the last non-fatal message associated with this" |
| 285 | " jvmti-env. Note this is best-effort only, not all log messages will be accessible through" |
| 286 | " this API. This will return the last error-message from all threads. Care should be taken" |
| 287 | " interpreting the return value when used with a multi-threaded program. The error message" |
| 288 | " will only be cleared by a call to 'com.android.art.misc.clear_last_error_message' and will" |
| 289 | " not be cleared by intervening successful calls. If no (tracked) error message has been" |
| 290 | " sent since the last call to clear_last_error_message this API will return" |
| 291 | " JVMTI_ERROR_ABSENT_INFORMATION. Not all failures will cause an error message to be" |
| 292 | " recorded.", |
| 293 | { |
| 294 | { "msg", JVMTI_KIND_ALLOC_BUF, JVMTI_TYPE_CCHAR, false }, |
| 295 | }, |
| 296 | { |
| 297 | ERR(NULL_POINTER), |
| 298 | ERR(ABSENT_INFORMATION), |
| 299 | }); |
| 300 | if (error != ERR(NONE)) { |
| 301 | return error; |
| 302 | } |
| 303 | |
| 304 | // ClearLastError extension |
| 305 | error = add_extension( |
| 306 | reinterpret_cast<jvmtiExtensionFunction>(LogUtil::ClearLastError), |
| 307 | "com.android.art.misc.clear_last_error_message", |
| 308 | "Clears the error message returned by 'com.android.art.misc.get_last_error_message'.", |
| 309 | { }, |
| 310 | { }); |
| 311 | if (error != ERR(NONE)) { |
| 312 | return error; |
| 313 | } |
| 314 | |
Alex Light | 3f33c0a | 2017-11-08 10:17:37 -0800 | [diff] [blame] | 315 | // Copy into output buffer. |
| 316 | |
| 317 | *extension_count_ptr = ext_vector.size(); |
| 318 | JvmtiUniquePtr<jvmtiExtensionFunctionInfo[]> out_data = |
| 319 | AllocJvmtiUniquePtr<jvmtiExtensionFunctionInfo[]>(env, ext_vector.size(), &error); |
| 320 | if (out_data == nullptr) { |
| 321 | return error; |
| 322 | } |
| 323 | memcpy(out_data.get(), |
| 324 | ext_vector.data(), |
| 325 | ext_vector.size() * sizeof(jvmtiExtensionFunctionInfo)); |
| 326 | *extensions = out_data.release(); |
| 327 | |
| 328 | // Release all the buffer holders, we're OK now. |
| 329 | for (auto& holder : char_buffers) { |
| 330 | holder.release(); |
| 331 | } |
| 332 | for (auto& holder : param_buffers) { |
| 333 | holder.release(); |
| 334 | } |
| 335 | for (auto& holder : error_buffers) { |
| 336 | holder.release(); |
| 337 | } |
| 338 | |
| 339 | return OK; |
| 340 | } |
| 341 | |
| 342 | |
Alex Light | 8c2b929 | 2017-11-09 13:21:01 -0800 | [diff] [blame] | 343 | jvmtiError ExtensionUtil::GetExtensionEvents(jvmtiEnv* env, |
Alex Light | 3f33c0a | 2017-11-08 10:17:37 -0800 | [diff] [blame] | 344 | jint* extension_count_ptr, |
| 345 | jvmtiExtensionEventInfo** extensions) { |
Alex Light | 8c2b929 | 2017-11-09 13:21:01 -0800 | [diff] [blame] | 346 | std::vector<jvmtiExtensionEventInfo> ext_vector; |
| 347 | |
| 348 | // Holders for allocated values. |
| 349 | std::vector<JvmtiUniquePtr<char[]>> char_buffers; |
| 350 | std::vector<JvmtiUniquePtr<jvmtiParamInfo[]>> param_buffers; |
| 351 | |
| 352 | auto add_extension = [&](ArtJvmtiEvent extension_event_index, |
| 353 | const char* id, |
| 354 | const char* short_description, |
| 355 | const std::vector<CParamInfo>& params) { |
| 356 | DCHECK(IsExtensionEvent(extension_event_index)); |
| 357 | jvmtiExtensionEventInfo event_info; |
| 358 | jvmtiError error; |
| 359 | |
| 360 | event_info.extension_event_index = static_cast<jint>(extension_event_index); |
| 361 | |
| 362 | JvmtiUniquePtr<char[]> id_ptr = CopyString(env, id, &error); |
| 363 | if (id_ptr == nullptr) { |
| 364 | return error; |
| 365 | } |
| 366 | event_info.id = id_ptr.get(); |
| 367 | char_buffers.push_back(std::move(id_ptr)); |
| 368 | |
| 369 | JvmtiUniquePtr<char[]> descr = CopyString(env, short_description, &error); |
| 370 | if (descr == nullptr) { |
| 371 | return error; |
| 372 | } |
| 373 | event_info.short_description = descr.get(); |
| 374 | char_buffers.push_back(std::move(descr)); |
| 375 | |
| 376 | event_info.param_count = params.size(); |
| 377 | if (!params.empty()) { |
| 378 | JvmtiUniquePtr<jvmtiParamInfo[]> params_ptr = |
| 379 | AllocJvmtiUniquePtr<jvmtiParamInfo[]>(env, params.size(), &error); |
| 380 | if (params_ptr == nullptr) { |
| 381 | return error; |
| 382 | } |
| 383 | event_info.params = params_ptr.get(); |
| 384 | param_buffers.push_back(std::move(params_ptr)); |
| 385 | |
| 386 | for (jint i = 0; i != event_info.param_count; ++i) { |
| 387 | event_info.params[i] = params[i].ToParamInfo(env, &char_buffers, &error); |
| 388 | if (error != OK) { |
| 389 | return error; |
| 390 | } |
| 391 | } |
| 392 | } else { |
| 393 | event_info.params = nullptr; |
| 394 | } |
| 395 | |
| 396 | ext_vector.push_back(event_info); |
| 397 | |
| 398 | return ERR(NONE); |
| 399 | }; |
| 400 | |
| 401 | jvmtiError error; |
| 402 | error = add_extension( |
| 403 | ArtJvmtiEvent::kDdmPublishChunk, |
| 404 | "com.android.art.internal.ddm.publish_chunk", |
| 405 | "Called when there is new ddms information that the agent or other clients can use. The" |
| 406 | " agent is given the 'type' of the ddms chunk and a 'data_size' byte-buffer in 'data'." |
| 407 | " The 'data' pointer is only valid for the duration of the publish_chunk event. The agent" |
| 408 | " is responsible for interpreting the information present in the 'data' buffer. This is" |
| 409 | " provided for backwards-compatibility support only. Agents should prefer to use relevant" |
| 410 | " JVMTI events and functions above listening for this event.", |
Igor Murashkin | 5573c37 | 2017-11-16 13:34:30 -0800 | [diff] [blame] | 411 | { |
Alex Light | 8c2b929 | 2017-11-09 13:21:01 -0800 | [diff] [blame] | 412 | { "jni_env", JVMTI_KIND_IN_PTR, JVMTI_TYPE_JNIENV, false }, |
| 413 | { "type", JVMTI_KIND_IN, JVMTI_TYPE_JINT, false }, |
| 414 | { "data_size", JVMTI_KIND_IN, JVMTI_TYPE_JINT, false }, |
| 415 | { "data", JVMTI_KIND_IN_BUF, JVMTI_TYPE_JBYTE, false }, |
| 416 | }); |
| 417 | if (error != OK) { |
| 418 | return error; |
| 419 | } |
| 420 | |
| 421 | // Copy into output buffer. |
| 422 | |
| 423 | *extension_count_ptr = ext_vector.size(); |
| 424 | JvmtiUniquePtr<jvmtiExtensionEventInfo[]> out_data = |
| 425 | AllocJvmtiUniquePtr<jvmtiExtensionEventInfo[]>(env, ext_vector.size(), &error); |
| 426 | if (out_data == nullptr) { |
| 427 | return error; |
| 428 | } |
| 429 | memcpy(out_data.get(), |
| 430 | ext_vector.data(), |
| 431 | ext_vector.size() * sizeof(jvmtiExtensionEventInfo)); |
| 432 | *extensions = out_data.release(); |
| 433 | |
| 434 | // Release all the buffer holders, we're OK now. |
| 435 | for (auto& holder : char_buffers) { |
| 436 | holder.release(); |
| 437 | } |
| 438 | for (auto& holder : param_buffers) { |
| 439 | holder.release(); |
| 440 | } |
| 441 | |
Alex Light | 3f33c0a | 2017-11-08 10:17:37 -0800 | [diff] [blame] | 442 | return OK; |
| 443 | } |
| 444 | |
Alex Light | 8c2b929 | 2017-11-09 13:21:01 -0800 | [diff] [blame] | 445 | jvmtiError ExtensionUtil::SetExtensionEventCallback(jvmtiEnv* env, |
| 446 | jint extension_event_index, |
| 447 | jvmtiExtensionEvent callback, |
| 448 | EventHandler* event_handler) { |
| 449 | if (!IsExtensionEvent(extension_event_index)) { |
| 450 | return ERR(ILLEGAL_ARGUMENT); |
| 451 | } |
| 452 | ArtJvmTiEnv* art_env = ArtJvmTiEnv::AsArtJvmTiEnv(env); |
| 453 | jvmtiEventMode mode = callback == nullptr ? JVMTI_DISABLE : JVMTI_ENABLE; |
| 454 | // Lock the event_info_mutex_ while we set the event to make sure it isn't lost by a concurrent |
| 455 | // change to the normal callbacks. |
| 456 | { |
| 457 | art::WriterMutexLock lk(art::Thread::Current(), art_env->event_info_mutex_); |
| 458 | if (art_env->event_callbacks.get() == nullptr) { |
| 459 | art_env->event_callbacks.reset(new ArtJvmtiEventCallbacks()); |
| 460 | } |
| 461 | jvmtiError err = art_env->event_callbacks->Set(extension_event_index, callback); |
| 462 | if (err != OK) { |
| 463 | return err; |
| 464 | } |
| 465 | } |
| 466 | return event_handler->SetEvent(art_env, |
Andreas Gampe | 6e89776 | 2018-10-16 13:09:32 -0700 | [diff] [blame] | 467 | /*thread=*/nullptr, |
Alex Light | 8c2b929 | 2017-11-09 13:21:01 -0800 | [diff] [blame] | 468 | static_cast<ArtJvmtiEvent>(extension_event_index), |
| 469 | mode); |
Alex Light | 3f33c0a | 2017-11-08 10:17:37 -0800 | [diff] [blame] | 470 | } |
| 471 | |
| 472 | } // namespace openjdkjvmti |