| File: | jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c |
| Warning: | line 1332, column 25 Value stored to 'errorCode' is never read |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
| 1 | /* |
| 2 | * Copyright (c) 2003, 2021, Oracle and/or its affiliates. All rights reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Oracle designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Oracle in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| 22 | * or visit www.oracle.com if you need additional information or have any |
| 23 | * questions. |
| 24 | */ |
| 25 | |
| 26 | /* |
| 27 | * Copyright 2003 Wily Technology, Inc. |
| 28 | */ |
| 29 | |
| 30 | #include <jni.h> |
| 31 | #include <jvm.h> |
| 32 | #include <jvmti.h> |
| 33 | #include <stdlib.h> |
| 34 | #include <string.h> |
| 35 | #include "JPLISAgent.h" |
| 36 | #include "JPLISAssert.h" |
| 37 | #include "Utilities.h" |
| 38 | #include "Reentrancy.h" |
| 39 | #include "JavaExceptions.h" |
| 40 | |
| 41 | #include "EncodingSupport.h" |
| 42 | #include "FileSystemSupport.h" /* For MAXPATHLEN & uintptr_t */ |
| 43 | |
| 44 | #include "sun_instrument_InstrumentationImpl.h" |
| 45 | |
| 46 | /* |
| 47 | * The JPLISAgent manages the initialization all of the Java programming language Agents. |
| 48 | * It also supports the native method bridge between the JPLIS and the JVMTI. |
| 49 | * It maintains a single JVMTI Env that all JPL agents share. |
| 50 | * It parses command line requests and creates individual Java agents. |
| 51 | */ |
| 52 | |
| 53 | |
| 54 | /* |
| 55 | * private prototypes |
| 56 | */ |
| 57 | |
| 58 | /* Allocates an unformatted JPLIS agent data structure. Returns NULL if allocation fails. */ |
| 59 | JPLISAgent * |
| 60 | allocateJPLISAgent(jvmtiEnv * jvmtiEnv); |
| 61 | |
| 62 | /* Initializes an already-allocated JPLIS agent data structure. */ |
| 63 | JPLISInitializationError |
| 64 | initializeJPLISAgent( JPLISAgent * agent, |
| 65 | JavaVM * vm, |
| 66 | jvmtiEnv * jvmtienv); |
| 67 | /* De-allocates a JPLIS agent data structure. Only used in partial-failure cases at startup; |
| 68 | * in normal usage the JPLIS agent lives forever |
| 69 | */ |
| 70 | void |
| 71 | deallocateJPLISAgent( jvmtiEnv * jvmtienv, |
| 72 | JPLISAgent * agent); |
| 73 | |
| 74 | /* Does one-time work to interrogate the JVM about capabilities and cache the answers. */ |
| 75 | void |
| 76 | checkCapabilities(JPLISAgent * agent); |
| 77 | |
| 78 | /* Takes the elements of the command string (agent class name and options string) and |
| 79 | * create java strings for them. |
| 80 | * Returns true if a classname was found. Makes no promises beyond the textual; says nothing about whether |
| 81 | * the class exists or can be loaded. |
| 82 | * If return value is true, sets outputClassname to a non-NULL local JNI reference. |
| 83 | * If return value is true, sets outputOptionsString either to NULL or to a non-NULL local JNI reference. |
| 84 | * If return value is false, neither output parameter is set. |
| 85 | */ |
| 86 | jboolean |
| 87 | commandStringIntoJavaStrings( JNIEnv * jnienv, |
| 88 | const char * classname, |
| 89 | const char * optionsString, |
| 90 | jstring * outputClassname, |
| 91 | jstring * outputOptionsString); |
| 92 | |
| 93 | /* Start one Java agent from the supplied parameters. |
| 94 | * Most of the logic lives in a helper function that lives over in Java code-- |
| 95 | * we pass parameters out to Java and use our own Java helper to actually |
| 96 | * load the agent and call the premain. |
| 97 | * Returns true if the Java agent class is loaded and the premain/agentmain method completes |
| 98 | * with no exceptions, false otherwise. |
| 99 | */ |
| 100 | jboolean |
| 101 | invokeJavaAgentMainMethod( JNIEnv * jnienv, |
| 102 | jobject instrumentationImpl, |
| 103 | jmethodID agentMainMethod, |
| 104 | jstring className, |
| 105 | jstring optionsString); |
| 106 | |
| 107 | /* Once we have loaded the Java agent and called the premain, |
| 108 | * we can release the copies we have been keeping of the command line |
| 109 | * data (agent class name and option strings). |
| 110 | */ |
| 111 | void |
| 112 | deallocateCommandLineData(JPLISAgent * agent); |
| 113 | |
| 114 | /* |
| 115 | * Common support for various class list fetchers. |
| 116 | */ |
| 117 | typedef jvmtiError (*ClassListFetcher) |
| 118 | ( jvmtiEnv * jvmtiEnv, |
| 119 | jobject classLoader, |
| 120 | jint * classCount, |
| 121 | jclass ** classes); |
| 122 | |
| 123 | /* Fetcher that ignores the class loader parameter, and uses the JVMTI to get a list of all classes. |
| 124 | * Returns a jvmtiError according to the underlying JVMTI service. |
| 125 | */ |
| 126 | jvmtiError |
| 127 | getAllLoadedClassesClassListFetcher( jvmtiEnv * jvmtiEnv, |
| 128 | jobject classLoader, |
| 129 | jint * classCount, |
| 130 | jclass ** classes); |
| 131 | |
| 132 | /* Fetcher that uses the class loader parameter, and uses the JVMTI to get a list of all classes |
| 133 | * for which the supplied loader is the initiating loader. |
| 134 | * Returns a jvmtiError according to the underlying JVMTI service. |
| 135 | */ |
| 136 | jvmtiError |
| 137 | getInitiatedClassesClassListFetcher( jvmtiEnv * jvmtiEnv, |
| 138 | jobject classLoader, |
| 139 | jint * classCount, |
| 140 | jclass ** classes); |
| 141 | |
| 142 | /* |
| 143 | * Common guts for two native methods, which are the same except for the policy for fetching |
| 144 | * the list of classes. |
| 145 | * Either returns a local JNI reference to an array of references to java.lang.Class. |
| 146 | * Can throw, if it does will alter the JNIEnv with an outstanding exception. |
| 147 | */ |
| 148 | jobjectArray |
| 149 | commonGetClassList( JNIEnv * jnienv, |
| 150 | JPLISAgent * agent, |
| 151 | jobject classLoader, |
| 152 | ClassListFetcher fetcher); |
| 153 | |
| 154 | |
| 155 | /* |
| 156 | * Misc. utilities. |
| 157 | */ |
| 158 | |
| 159 | /* Checked exception mapper used by the redefine classes implementation. |
| 160 | * Allows ClassNotFoundException or UnmodifiableClassException; maps others |
| 161 | * to InternalError. Can return NULL in an error case. |
| 162 | */ |
| 163 | jthrowable |
| 164 | redefineClassMapper( JNIEnv * jnienv, |
| 165 | jthrowable throwableToMap); |
| 166 | |
| 167 | /* Turns a buffer of jclass * into a Java array whose elements are java.lang.Class. |
| 168 | * Can throw, if it does will alter the JNIEnv with an outstanding exception. |
| 169 | */ |
| 170 | jobjectArray |
| 171 | getObjectArrayFromClasses(JNIEnv* jnienv, jclass* classes, jint classCount); |
| 172 | |
| 173 | |
| 174 | JPLISEnvironment * |
| 175 | getJPLISEnvironment(jvmtiEnv * jvmtienv) { |
| 176 | JPLISEnvironment * environment = NULL((void*)0); |
| 177 | jvmtiError jvmtierror = JVMTI_ERROR_NONE; |
| 178 | |
| 179 | jvmtierror = (*jvmtienv)->GetEnvironmentLocalStorage( |
| 180 | jvmtienv, |
| 181 | (void**)&environment); |
| 182 | /* can be called from any phase */ |
| 183 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE ), "jvmtierror == JVMTI_ERROR_NONE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 183); |
| 184 | |
| 185 | if (jvmtierror == JVMTI_ERROR_NONE) { |
| 186 | jplis_assert(environment != NULL)JPLISAssertCondition((jboolean)(environment != ((void*)0)), "environment != NULL" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 186); |
| 187 | jplis_assert(environment->mJVMTIEnv == jvmtienv)JPLISAssertCondition((jboolean)(environment->mJVMTIEnv == jvmtienv ), "environment->mJVMTIEnv == jvmtienv", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 187); |
| 188 | } else { |
| 189 | environment = NULL((void*)0); |
| 190 | } |
| 191 | return environment; |
| 192 | } |
| 193 | |
| 194 | /* |
| 195 | * OnLoad processing code. |
| 196 | */ |
| 197 | |
| 198 | /* |
| 199 | * Creates a new JPLISAgent. |
| 200 | * Returns error if the agent cannot be created and initialized. |
| 201 | * The JPLISAgent* pointed to by agent_ptr is set to the new broker, |
| 202 | * or NULL if an error has occurred. |
| 203 | */ |
| 204 | JPLISInitializationError |
| 205 | createNewJPLISAgent(JavaVM * vm, JPLISAgent **agent_ptr) { |
| 206 | JPLISInitializationError initerror = JPLIS_INIT_ERROR_NONE; |
| 207 | jvmtiEnv * jvmtienv = NULL((void*)0); |
| 208 | jint jnierror = JNI_OK0; |
| 209 | |
| 210 | *agent_ptr = NULL((void*)0); |
| 211 | jnierror = (*vm)->GetEnv( vm, |
| 212 | (void **) &jvmtienv, |
| 213 | JVMTI_VERSION_1_1); |
| 214 | if ( jnierror != JNI_OK0 ) { |
| 215 | initerror = JPLIS_INIT_ERROR_CANNOT_CREATE_NATIVE_AGENT; |
| 216 | } else { |
| 217 | JPLISAgent * agent = allocateJPLISAgent(jvmtienv); |
| 218 | if ( agent == NULL((void*)0) ) { |
| 219 | initerror = JPLIS_INIT_ERROR_ALLOCATION_FAILURE; |
| 220 | } else { |
| 221 | initerror = initializeJPLISAgent( agent, |
| 222 | vm, |
| 223 | jvmtienv); |
| 224 | if ( initerror == JPLIS_INIT_ERROR_NONE ) { |
| 225 | *agent_ptr = agent; |
| 226 | } else { |
| 227 | deallocateJPLISAgent(jvmtienv, agent); |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | /* don't leak envs */ |
| 232 | if ( initerror != JPLIS_INIT_ERROR_NONE ) { |
| 233 | jvmtiError jvmtierror = (*jvmtienv)->DisposeEnvironment(jvmtienv); |
| 234 | /* can be called from any phase */ |
| 235 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE ), "jvmtierror == JVMTI_ERROR_NONE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 235); |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | return initerror; |
| 240 | } |
| 241 | |
| 242 | /* |
| 243 | * Allocates a JPLISAgent. Returns NULL if it cannot be allocated |
| 244 | */ |
| 245 | JPLISAgent * |
| 246 | allocateJPLISAgent(jvmtiEnv * jvmtienv) { |
| 247 | return (JPLISAgent *) allocate( jvmtienv, |
| 248 | sizeof(JPLISAgent)); |
| 249 | } |
| 250 | |
| 251 | JPLISInitializationError |
| 252 | initializeJPLISAgent( JPLISAgent * agent, |
| 253 | JavaVM * vm, |
| 254 | jvmtiEnv * jvmtienv) { |
| 255 | jvmtiError jvmtierror = JVMTI_ERROR_NONE; |
| 256 | jvmtiPhase phase; |
| 257 | |
| 258 | agent->mJVM = vm; |
| 259 | agent->mNormalEnvironment.mJVMTIEnv = jvmtienv; |
| 260 | agent->mNormalEnvironment.mAgent = agent; |
| 261 | agent->mNormalEnvironment.mIsRetransformer = JNI_FALSE0; |
| 262 | agent->mRetransformEnvironment.mJVMTIEnv = NULL((void*)0); /* NULL until needed */ |
| 263 | agent->mRetransformEnvironment.mAgent = agent; |
| 264 | agent->mRetransformEnvironment.mIsRetransformer = JNI_FALSE0; /* JNI_FALSE until mJVMTIEnv is set */ |
| 265 | agent->mAgentmainCaller = NULL((void*)0); |
| 266 | agent->mInstrumentationImpl = NULL((void*)0); |
| 267 | agent->mPremainCaller = NULL((void*)0); |
| 268 | agent->mTransform = NULL((void*)0); |
| 269 | agent->mRedefineAvailable = JNI_FALSE0; /* assume no for now */ |
| 270 | agent->mRedefineAdded = JNI_FALSE0; |
| 271 | agent->mNativeMethodPrefixAvailable = JNI_FALSE0; /* assume no for now */ |
| 272 | agent->mNativeMethodPrefixAdded = JNI_FALSE0; |
| 273 | agent->mAgentClassName = NULL((void*)0); |
| 274 | agent->mOptionsString = NULL((void*)0); |
| 275 | agent->mJarfile = NULL((void*)0); |
| 276 | |
| 277 | /* make sure we can recover either handle in either direction. |
| 278 | * the agent has a ref to the jvmti; make it mutual |
| 279 | */ |
| 280 | jvmtierror = (*jvmtienv)->SetEnvironmentLocalStorage( |
| 281 | jvmtienv, |
| 282 | &(agent->mNormalEnvironment)); |
| 283 | /* can be called from any phase */ |
| 284 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE ), "jvmtierror == JVMTI_ERROR_NONE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 284); |
| 285 | |
| 286 | /* check what capabilities are available */ |
| 287 | checkCapabilities(agent); |
| 288 | |
| 289 | /* check phase - if live phase then we don't need the VMInit event */ |
| 290 | jvmtierror = (*jvmtienv)->GetPhase(jvmtienv, &phase); |
| 291 | /* can be called from any phase */ |
| 292 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE ), "jvmtierror == JVMTI_ERROR_NONE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 292); |
| 293 | if (phase == JVMTI_PHASE_LIVE) { |
| 294 | return JPLIS_INIT_ERROR_NONE; |
| 295 | } |
| 296 | |
| 297 | if (phase != JVMTI_PHASE_ONLOAD) { |
| 298 | /* called too early or called too late; either way bail out */ |
| 299 | return JPLIS_INIT_ERROR_FAILURE; |
| 300 | } |
| 301 | |
| 302 | /* now turn on the VMInit event */ |
| 303 | if ( jvmtierror == JVMTI_ERROR_NONE ) { |
| 304 | jvmtiEventCallbacks callbacks; |
| 305 | memset(&callbacks, 0, sizeof(callbacks)); |
| 306 | callbacks.VMInit = &eventHandlerVMInit; |
| 307 | |
| 308 | jvmtierror = (*jvmtienv)->SetEventCallbacks( jvmtienv, |
| 309 | &callbacks, |
| 310 | sizeof(callbacks)); |
| 311 | check_phase_ret_blob(jvmtierror, JPLIS_INIT_ERROR_FAILURE)if ((jvmtierror) == JVMTI_ERROR_WRONG_PHASE) { return (JPLIS_INIT_ERROR_FAILURE ); }; |
| 312 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE ), "jvmtierror == JVMTI_ERROR_NONE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 312); |
| 313 | } |
| 314 | |
| 315 | if ( jvmtierror == JVMTI_ERROR_NONE ) { |
| 316 | jvmtierror = (*jvmtienv)->SetEventNotificationMode( |
| 317 | jvmtienv, |
| 318 | JVMTI_ENABLE, |
| 319 | JVMTI_EVENT_VM_INIT, |
| 320 | NULL((void*)0) /* all threads */); |
| 321 | check_phase_ret_blob(jvmtierror, JPLIS_INIT_ERROR_FAILURE)if ((jvmtierror) == JVMTI_ERROR_WRONG_PHASE) { return (JPLIS_INIT_ERROR_FAILURE ); }; |
| 322 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE ), "jvmtierror == JVMTI_ERROR_NONE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 322); |
| 323 | } |
| 324 | |
| 325 | return (jvmtierror == JVMTI_ERROR_NONE)? JPLIS_INIT_ERROR_NONE : JPLIS_INIT_ERROR_FAILURE; |
| 326 | } |
| 327 | |
| 328 | void |
| 329 | deallocateJPLISAgent(jvmtiEnv * jvmtienv, JPLISAgent * agent) { |
| 330 | deallocate(jvmtienv, agent); |
| 331 | } |
| 332 | |
| 333 | |
| 334 | JPLISInitializationError |
| 335 | recordCommandLineData( JPLISAgent * agent, |
| 336 | const char * agentClassName, |
| 337 | const char * optionsString ) { |
| 338 | JPLISInitializationError initerror = JPLIS_INIT_ERROR_NONE; |
| 339 | char * ourCopyOfAgentClassName = NULL((void*)0); |
| 340 | char * ourCopyOfOptionsString = NULL((void*)0); |
| 341 | |
| 342 | /* if no actual params, bail out now */ |
| 343 | if ((agentClassName == NULL((void*)0)) || (*agentClassName == 0)) { |
| 344 | initerror = JPLIS_INIT_ERROR_AGENT_CLASS_NOT_SPECIFIED; |
| 345 | } else { |
| 346 | ourCopyOfAgentClassName = allocate(jvmti(agent)agent->mNormalEnvironment.mJVMTIEnv, strlen(agentClassName)+1); |
| 347 | if (ourCopyOfAgentClassName == NULL((void*)0)) { |
| 348 | initerror = JPLIS_INIT_ERROR_ALLOCATION_FAILURE; |
| 349 | } else { |
| 350 | if (optionsString != NULL((void*)0)) { |
| 351 | ourCopyOfOptionsString = allocate(jvmti(agent)agent->mNormalEnvironment.mJVMTIEnv, strlen(optionsString)+1); |
| 352 | if (ourCopyOfOptionsString == NULL((void*)0)) { |
| 353 | deallocate(jvmti(agent)agent->mNormalEnvironment.mJVMTIEnv, ourCopyOfAgentClassName); |
| 354 | initerror = JPLIS_INIT_ERROR_ALLOCATION_FAILURE; |
| 355 | } |
| 356 | } |
| 357 | } |
| 358 | } |
| 359 | |
| 360 | if (initerror == JPLIS_INIT_ERROR_NONE) { |
| 361 | strcpy(ourCopyOfAgentClassName, agentClassName); |
| 362 | if (optionsString != NULL((void*)0)) { |
| 363 | strcpy(ourCopyOfOptionsString, optionsString); |
| 364 | } |
| 365 | agent->mAgentClassName = ourCopyOfAgentClassName; |
| 366 | agent->mOptionsString = ourCopyOfOptionsString; |
| 367 | } |
| 368 | |
| 369 | return initerror; |
| 370 | } |
| 371 | |
| 372 | /* |
| 373 | * VMInit processing code. |
| 374 | */ |
| 375 | |
| 376 | |
| 377 | /* |
| 378 | * If this call fails, the JVM launch will ultimately be aborted, |
| 379 | * so we don't have to be super-careful to clean up in partial failure |
| 380 | * cases. |
| 381 | */ |
| 382 | jboolean |
| 383 | processJavaStart( JPLISAgent * agent, |
| 384 | JNIEnv * jnienv) { |
| 385 | jboolean result; |
| 386 | |
| 387 | /* |
| 388 | * OK, Java is up now. We can start everything that needs Java. |
| 389 | */ |
| 390 | |
| 391 | /* |
| 392 | * First make our fallback InternalError throwable. |
| 393 | */ |
| 394 | result = initializeFallbackError(jnienv); |
| 395 | jplis_assert_msg(result, "fallback init failed")JPLISAssertConditionWithMessage((jboolean)(result), "result", "fallback init failed", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 395); |
| 396 | |
| 397 | /* |
| 398 | * Now make the InstrumentationImpl instance. |
| 399 | */ |
| 400 | if ( result ) { |
| 401 | result = createInstrumentationImpl(jnienv, agent); |
| 402 | jplis_assert_msg(result, "instrumentation instance creation failed")JPLISAssertConditionWithMessage((jboolean)(result), "result", "instrumentation instance creation failed", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 402); |
| 403 | } |
| 404 | |
| 405 | |
| 406 | /* |
| 407 | * Register a handler for ClassFileLoadHook (without enabling this event). |
| 408 | * Turn off the VMInit handler. |
| 409 | */ |
| 410 | if ( result ) { |
| 411 | result = setLivePhaseEventHandlers(agent); |
| 412 | jplis_assert_msg(result, "setting of live phase VM handlers failed")JPLISAssertConditionWithMessage((jboolean)(result), "result", "setting of live phase VM handlers failed", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 412); |
| 413 | } |
| 414 | |
| 415 | /* |
| 416 | * Load the Java agent, and call the premain. |
| 417 | */ |
| 418 | if ( result ) { |
| 419 | result = startJavaAgent(agent, jnienv, |
| 420 | agent->mAgentClassName, agent->mOptionsString, |
| 421 | agent->mPremainCaller); |
| 422 | jplis_assert_msg(result, "agent load/premain call failed")JPLISAssertConditionWithMessage((jboolean)(result), "result", "agent load/premain call failed", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 422); |
| 423 | } |
| 424 | |
| 425 | /* |
| 426 | * Finally surrender all of the tracking data that we don't need any more. |
| 427 | * If something is wrong, skip it, we will be aborting the JVM anyway. |
| 428 | */ |
| 429 | if ( result ) { |
| 430 | deallocateCommandLineData(agent); |
| 431 | } |
| 432 | |
| 433 | return result; |
| 434 | } |
| 435 | |
| 436 | jboolean |
| 437 | startJavaAgent( JPLISAgent * agent, |
| 438 | JNIEnv * jnienv, |
| 439 | const char * classname, |
| 440 | const char * optionsString, |
| 441 | jmethodID agentMainMethod) { |
| 442 | jboolean success = JNI_FALSE0; |
| 443 | jstring classNameObject = NULL((void*)0); |
| 444 | jstring optionsStringObject = NULL((void*)0); |
| 445 | |
| 446 | success = commandStringIntoJavaStrings( jnienv, |
| 447 | classname, |
| 448 | optionsString, |
| 449 | &classNameObject, |
| 450 | &optionsStringObject); |
| 451 | |
| 452 | if (success) { |
| 453 | success = invokeJavaAgentMainMethod( jnienv, |
| 454 | agent->mInstrumentationImpl, |
| 455 | agentMainMethod, |
| 456 | classNameObject, |
| 457 | optionsStringObject); |
| 458 | } |
| 459 | |
| 460 | return success; |
| 461 | } |
| 462 | |
| 463 | void |
| 464 | deallocateCommandLineData( JPLISAgent * agent) { |
| 465 | deallocate(jvmti(agent)agent->mNormalEnvironment.mJVMTIEnv, (void*)agent->mAgentClassName); |
| 466 | deallocate(jvmti(agent)agent->mNormalEnvironment.mJVMTIEnv, (void*)agent->mOptionsString); |
| 467 | |
| 468 | /* zero things out so it is easier to see what is going on */ |
| 469 | agent->mAgentClassName = NULL((void*)0); |
| 470 | agent->mOptionsString = NULL((void*)0); |
| 471 | } |
| 472 | |
| 473 | /* |
| 474 | * Create the java.lang.instrument.Instrumentation instance |
| 475 | * and access information for it (method IDs, etc) |
| 476 | */ |
| 477 | jboolean |
| 478 | createInstrumentationImpl( JNIEnv * jnienv, |
| 479 | JPLISAgent * agent) { |
| 480 | jclass implClass = NULL((void*)0); |
| 481 | jboolean errorOutstanding = JNI_FALSE0; |
| 482 | jobject resultImpl = NULL((void*)0); |
| 483 | jmethodID premainCallerMethodID = NULL((void*)0); |
| 484 | jmethodID agentmainCallerMethodID = NULL((void*)0); |
| 485 | jmethodID transformMethodID = NULL((void*)0); |
| 486 | jmethodID constructorID = NULL((void*)0); |
| 487 | jobject localReference = NULL((void*)0); |
| 488 | |
| 489 | /* First find the class of our implementation */ |
| 490 | implClass = (*jnienv)->FindClass( jnienv, |
| 491 | JPLIS_INSTRUMENTIMPL_CLASSNAME"sun/instrument/InstrumentationImpl"); |
| 492 | errorOutstanding = checkForAndClearThrowable(jnienv); |
| 493 | errorOutstanding = errorOutstanding || (implClass == NULL((void*)0)); |
| 494 | jplis_assert_msg(!errorOutstanding, "find class on InstrumentationImpl failed")JPLISAssertConditionWithMessage((jboolean)(!errorOutstanding) , "!errorOutstanding", "find class on InstrumentationImpl failed" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 494); |
| 495 | |
| 496 | if ( !errorOutstanding ) { |
| 497 | constructorID = (*jnienv)->GetMethodID( jnienv, |
| 498 | implClass, |
| 499 | JPLIS_INSTRUMENTIMPL_CONSTRUCTOR_METHODNAME"<init>", |
| 500 | JPLIS_INSTRUMENTIMPL_CONSTRUCTOR_METHODSIGNATURE"(JZZ)V"); |
| 501 | errorOutstanding = checkForAndClearThrowable(jnienv); |
| 502 | errorOutstanding = errorOutstanding || (constructorID == NULL((void*)0)); |
| 503 | jplis_assert_msg(!errorOutstanding, "find constructor on InstrumentationImpl failed")JPLISAssertConditionWithMessage((jboolean)(!errorOutstanding) , "!errorOutstanding", "find constructor on InstrumentationImpl failed" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 503); |
| 504 | } |
| 505 | |
| 506 | if ( !errorOutstanding ) { |
| 507 | jlong peerReferenceAsScalar = (jlong)(intptr_t) agent; |
| 508 | localReference = (*jnienv)->NewObject( jnienv, |
| 509 | implClass, |
| 510 | constructorID, |
| 511 | peerReferenceAsScalar, |
| 512 | agent->mRedefineAdded, |
| 513 | agent->mNativeMethodPrefixAdded); |
| 514 | errorOutstanding = checkForAndClearThrowable(jnienv); |
| 515 | errorOutstanding = errorOutstanding || (localReference == NULL((void*)0)); |
| 516 | jplis_assert_msg(!errorOutstanding, "call constructor on InstrumentationImpl failed")JPLISAssertConditionWithMessage((jboolean)(!errorOutstanding) , "!errorOutstanding", "call constructor on InstrumentationImpl failed" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 516); |
| 517 | } |
| 518 | |
| 519 | if ( !errorOutstanding ) { |
| 520 | resultImpl = (*jnienv)->NewGlobalRef(jnienv, localReference); |
| 521 | errorOutstanding = checkForAndClearThrowable(jnienv); |
| 522 | jplis_assert_msg(!errorOutstanding, "copy local ref to global ref")JPLISAssertConditionWithMessage((jboolean)(!errorOutstanding) , "!errorOutstanding", "copy local ref to global ref", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 522); |
| 523 | } |
| 524 | |
| 525 | /* Now look up the method ID for the pre-main caller (we will need this more than once) */ |
| 526 | if ( !errorOutstanding ) { |
| 527 | premainCallerMethodID = (*jnienv)->GetMethodID( jnienv, |
| 528 | implClass, |
| 529 | JPLIS_INSTRUMENTIMPL_PREMAININVOKER_METHODNAME"loadClassAndCallPremain", |
| 530 | JPLIS_INSTRUMENTIMPL_PREMAININVOKER_METHODSIGNATURE"(Ljava/lang/String;Ljava/lang/String;)V"); |
| 531 | errorOutstanding = checkForAndClearThrowable(jnienv); |
| 532 | errorOutstanding = errorOutstanding || (premainCallerMethodID == NULL((void*)0)); |
| 533 | jplis_assert_msg(!errorOutstanding, "can't find premain invoker methodID")JPLISAssertConditionWithMessage((jboolean)(!errorOutstanding) , "!errorOutstanding", "can't find premain invoker methodID", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 533); |
| 534 | } |
| 535 | |
| 536 | /* Now look up the method ID for the agent-main caller */ |
| 537 | if ( !errorOutstanding ) { |
| 538 | agentmainCallerMethodID = (*jnienv)->GetMethodID( jnienv, |
| 539 | implClass, |
| 540 | JPLIS_INSTRUMENTIMPL_AGENTMAININVOKER_METHODNAME"loadClassAndCallAgentmain", |
| 541 | JPLIS_INSTRUMENTIMPL_AGENTMAININVOKER_METHODSIGNATURE"(Ljava/lang/String;Ljava/lang/String;)V"); |
| 542 | errorOutstanding = checkForAndClearThrowable(jnienv); |
| 543 | errorOutstanding = errorOutstanding || (agentmainCallerMethodID == NULL((void*)0)); |
| 544 | jplis_assert_msg(!errorOutstanding, "can't find agentmain invoker methodID")JPLISAssertConditionWithMessage((jboolean)(!errorOutstanding) , "!errorOutstanding", "can't find agentmain invoker methodID" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 544); |
| 545 | } |
| 546 | |
| 547 | /* Now look up the method ID for the transform method (we will need this constantly) */ |
| 548 | if ( !errorOutstanding ) { |
| 549 | transformMethodID = (*jnienv)->GetMethodID( jnienv, |
| 550 | implClass, |
| 551 | JPLIS_INSTRUMENTIMPL_TRANSFORM_METHODNAME"transform", |
| 552 | JPLIS_INSTRUMENTIMPL_TRANSFORM_METHODSIGNATURE"(Ljava/lang/Module;Ljava/lang/ClassLoader;Ljava/lang/String;Ljava/lang/Class;Ljava/security/ProtectionDomain;[BZ)[B"); |
| 553 | errorOutstanding = checkForAndClearThrowable(jnienv); |
| 554 | errorOutstanding = errorOutstanding || (transformMethodID == NULL((void*)0)); |
| 555 | jplis_assert_msg(!errorOutstanding, "can't find transform methodID")JPLISAssertConditionWithMessage((jboolean)(!errorOutstanding) , "!errorOutstanding", "can't find transform methodID", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 555); |
| 556 | } |
| 557 | |
| 558 | if ( !errorOutstanding ) { |
| 559 | agent->mInstrumentationImpl = resultImpl; |
| 560 | agent->mPremainCaller = premainCallerMethodID; |
| 561 | agent->mAgentmainCaller = agentmainCallerMethodID; |
| 562 | agent->mTransform = transformMethodID; |
| 563 | } |
| 564 | |
| 565 | return !errorOutstanding; |
| 566 | } |
| 567 | |
| 568 | jboolean |
| 569 | commandStringIntoJavaStrings( JNIEnv * jnienv, |
| 570 | const char * classname, |
| 571 | const char * optionsString, |
| 572 | jstring * outputClassname, |
| 573 | jstring * outputOptionsString) { |
| 574 | jstring classnameJavaString = NULL((void*)0); |
| 575 | jstring optionsJavaString = NULL((void*)0); |
| 576 | jboolean errorOutstanding = JNI_TRUE1; |
| 577 | |
| 578 | classnameJavaString = (*jnienv)->NewStringUTF(jnienv, classname); |
| 579 | errorOutstanding = checkForAndClearThrowable(jnienv); |
| 580 | jplis_assert_msg(!errorOutstanding, "can't create class name java string")JPLISAssertConditionWithMessage((jboolean)(!errorOutstanding) , "!errorOutstanding", "can't create class name java string", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 580); |
| 581 | |
| 582 | if ( !errorOutstanding ) { |
| 583 | if ( optionsString != NULL((void*)0)) { |
| 584 | optionsJavaString = (*jnienv)->NewStringUTF(jnienv, optionsString); |
| 585 | errorOutstanding = checkForAndClearThrowable(jnienv); |
| 586 | jplis_assert_msg(!errorOutstanding, "can't create options java string")JPLISAssertConditionWithMessage((jboolean)(!errorOutstanding) , "!errorOutstanding", "can't create options java string", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 586); |
| 587 | } |
| 588 | |
| 589 | if ( !errorOutstanding ) { |
| 590 | *outputClassname = classnameJavaString; |
| 591 | *outputOptionsString = optionsJavaString; |
| 592 | } |
| 593 | } |
| 594 | |
| 595 | return !errorOutstanding; |
| 596 | } |
| 597 | |
| 598 | |
| 599 | jboolean |
| 600 | invokeJavaAgentMainMethod( JNIEnv * jnienv, |
| 601 | jobject instrumentationImpl, |
| 602 | jmethodID mainCallingMethod, |
| 603 | jstring className, |
| 604 | jstring optionsString) { |
| 605 | jboolean errorOutstanding = JNI_FALSE0; |
| 606 | |
| 607 | jplis_assert(mainCallingMethod != NULL)JPLISAssertCondition((jboolean)(mainCallingMethod != ((void*) 0)), "mainCallingMethod != NULL", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 607); |
| 608 | if ( mainCallingMethod != NULL((void*)0) ) { |
| 609 | (*jnienv)->CallVoidMethod( jnienv, |
| 610 | instrumentationImpl, |
| 611 | mainCallingMethod, |
| 612 | className, |
| 613 | optionsString); |
| 614 | errorOutstanding = checkForThrowable(jnienv); |
| 615 | if ( errorOutstanding ) { |
| 616 | logThrowable(jnienv); |
| 617 | } |
| 618 | checkForAndClearThrowable(jnienv); |
| 619 | } |
| 620 | return !errorOutstanding; |
| 621 | } |
| 622 | |
| 623 | jboolean |
| 624 | setLivePhaseEventHandlers( JPLISAgent * agent) { |
| 625 | jvmtiEventCallbacks callbacks; |
| 626 | jvmtiEnv * jvmtienv = jvmti(agent)agent->mNormalEnvironment.mJVMTIEnv; |
| 627 | jvmtiError jvmtierror; |
| 628 | |
| 629 | /* first swap out the handlers (switch from the VMInit handler, which we do not need, |
| 630 | * to the ClassFileLoadHook handler, which is what the agents need from now on) |
| 631 | */ |
| 632 | memset(&callbacks, 0, sizeof(callbacks)); |
| 633 | callbacks.ClassFileLoadHook = &eventHandlerClassFileLoadHook; |
| 634 | |
| 635 | jvmtierror = (*jvmtienv)->SetEventCallbacks( jvmtienv, |
| 636 | &callbacks, |
| 637 | sizeof(callbacks)); |
| 638 | check_phase_ret_false(jvmtierror)if ((jvmtierror) == JVMTI_ERROR_WRONG_PHASE) { return (jboolean ) 0; }; |
| 639 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE ), "jvmtierror == JVMTI_ERROR_NONE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 639); |
| 640 | |
| 641 | |
| 642 | if ( jvmtierror == JVMTI_ERROR_NONE ) { |
| 643 | /* turn off VMInit */ |
| 644 | jvmtierror = (*jvmtienv)->SetEventNotificationMode( |
| 645 | jvmtienv, |
| 646 | JVMTI_DISABLE, |
| 647 | JVMTI_EVENT_VM_INIT, |
| 648 | NULL((void*)0) /* all threads */); |
| 649 | check_phase_ret_false(jvmtierror)if ((jvmtierror) == JVMTI_ERROR_WRONG_PHASE) { return (jboolean ) 0; }; |
| 650 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE ), "jvmtierror == JVMTI_ERROR_NONE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 650); |
| 651 | } |
| 652 | |
| 653 | return (jvmtierror == JVMTI_ERROR_NONE); |
| 654 | } |
| 655 | |
| 656 | /** |
| 657 | * Check if the can_redefine_classes capability is available. |
| 658 | */ |
| 659 | void |
| 660 | checkCapabilities(JPLISAgent * agent) { |
| 661 | jvmtiEnv * jvmtienv = jvmti(agent)agent->mNormalEnvironment.mJVMTIEnv; |
| 662 | jvmtiCapabilities potentialCapabilities; |
| 663 | jvmtiError jvmtierror; |
| 664 | |
| 665 | memset(&potentialCapabilities, 0, sizeof(potentialCapabilities)); |
| 666 | |
| 667 | jvmtierror = (*jvmtienv)->GetPotentialCapabilities(jvmtienv, &potentialCapabilities); |
| 668 | check_phase_ret(jvmtierror)if ((jvmtierror) == JVMTI_ERROR_WRONG_PHASE) { return; }; |
| 669 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE ), "jvmtierror == JVMTI_ERROR_NONE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 669); |
| 670 | |
| 671 | if ( jvmtierror == JVMTI_ERROR_NONE ) { |
| 672 | if ( potentialCapabilities.can_redefine_classes == 1 ) { |
| 673 | agent->mRedefineAvailable = JNI_TRUE1; |
| 674 | } |
| 675 | if ( potentialCapabilities.can_set_native_method_prefix == 1 ) { |
| 676 | agent->mNativeMethodPrefixAvailable = JNI_TRUE1; |
| 677 | } |
| 678 | } |
| 679 | } |
| 680 | |
| 681 | /** |
| 682 | * Enable native method prefix in one JVM TI environment |
| 683 | */ |
| 684 | void |
| 685 | enableNativeMethodPrefixCapability(jvmtiEnv * jvmtienv) { |
| 686 | jvmtiCapabilities desiredCapabilities; |
| 687 | jvmtiError jvmtierror; |
| 688 | |
| 689 | jvmtierror = (*jvmtienv)->GetCapabilities(jvmtienv, &desiredCapabilities); |
| 690 | /* can be called from any phase */ |
| 691 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE ), "jvmtierror == JVMTI_ERROR_NONE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 691); |
| 692 | desiredCapabilities.can_set_native_method_prefix = 1; |
| 693 | jvmtierror = (*jvmtienv)->AddCapabilities(jvmtienv, &desiredCapabilities); |
| 694 | check_phase_ret(jvmtierror)if ((jvmtierror) == JVMTI_ERROR_WRONG_PHASE) { return; }; |
| 695 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE ), "jvmtierror == JVMTI_ERROR_NONE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 695); |
| 696 | } |
| 697 | |
| 698 | |
| 699 | /** |
| 700 | * Add the can_set_native_method_prefix capability |
| 701 | */ |
| 702 | void |
| 703 | addNativeMethodPrefixCapability(JPLISAgent * agent) { |
| 704 | if (agent->mNativeMethodPrefixAvailable && !agent->mNativeMethodPrefixAdded) { |
| 705 | jvmtiEnv * jvmtienv = agent->mNormalEnvironment.mJVMTIEnv; |
| 706 | enableNativeMethodPrefixCapability(jvmtienv); |
| 707 | |
| 708 | jvmtienv = agent->mRetransformEnvironment.mJVMTIEnv; |
| 709 | if (jvmtienv != NULL((void*)0)) { |
| 710 | enableNativeMethodPrefixCapability(jvmtienv); |
| 711 | } |
| 712 | agent->mNativeMethodPrefixAdded = JNI_TRUE1; |
| 713 | } |
| 714 | } |
| 715 | |
| 716 | /** |
| 717 | * Add the can_maintain_original_method_order capability (for testing) |
| 718 | */ |
| 719 | void |
| 720 | addOriginalMethodOrderCapability(JPLISAgent * agent) { |
| 721 | jvmtiEnv * jvmtienv = jvmti(agent)agent->mNormalEnvironment.mJVMTIEnv; |
| 722 | jvmtiCapabilities desiredCapabilities; |
| 723 | jvmtiError jvmtierror; |
| 724 | |
| 725 | jvmtierror = (*jvmtienv)->GetCapabilities(jvmtienv, &desiredCapabilities); |
| 726 | /* can be called from any phase */ |
| 727 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE ), "jvmtierror == JVMTI_ERROR_NONE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 727); |
| 728 | desiredCapabilities.can_maintain_original_method_order = 1; |
| 729 | jvmtierror = (*jvmtienv)->AddCapabilities(jvmtienv, &desiredCapabilities); |
| 730 | check_phase_ret(jvmtierror)if ((jvmtierror) == JVMTI_ERROR_WRONG_PHASE) { return; }; |
| 731 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE ), "jvmtierror == JVMTI_ERROR_NONE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 731); |
| 732 | } |
| 733 | |
| 734 | /** |
| 735 | * Add the can_redefine_classes capability |
| 736 | */ |
| 737 | void |
| 738 | addRedefineClassesCapability(JPLISAgent * agent) { |
| 739 | jvmtiEnv * jvmtienv = jvmti(agent)agent->mNormalEnvironment.mJVMTIEnv; |
| 740 | jvmtiCapabilities desiredCapabilities; |
| 741 | jvmtiError jvmtierror; |
| 742 | |
| 743 | if (agent->mRedefineAvailable && !agent->mRedefineAdded) { |
| 744 | jvmtierror = (*jvmtienv)->GetCapabilities(jvmtienv, &desiredCapabilities); |
| 745 | /* can be called from any phase */ |
| 746 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE ), "jvmtierror == JVMTI_ERROR_NONE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 746); |
| 747 | desiredCapabilities.can_redefine_classes = 1; |
| 748 | jvmtierror = (*jvmtienv)->AddCapabilities(jvmtienv, &desiredCapabilities); |
| 749 | check_phase_ret(jvmtierror)if ((jvmtierror) == JVMTI_ERROR_WRONG_PHASE) { return; }; |
| 750 | |
| 751 | /* |
| 752 | * With mixed premain/agentmain agents then it's possible that the |
| 753 | * capability was potentially available in the onload phase but |
| 754 | * subsequently unavailable in the live phase. |
| 755 | */ |
| 756 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE ||JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE || jvmtierror == JVMTI_ERROR_NOT_AVAILABLE), "jvmtierror == JVMTI_ERROR_NONE || jvmtierror == JVMTI_ERROR_NOT_AVAILABLE" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 757) |
| 757 | jvmtierror == JVMTI_ERROR_NOT_AVAILABLE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE || jvmtierror == JVMTI_ERROR_NOT_AVAILABLE), "jvmtierror == JVMTI_ERROR_NONE || jvmtierror == JVMTI_ERROR_NOT_AVAILABLE" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 757); |
| 758 | if (jvmtierror == JVMTI_ERROR_NONE) { |
| 759 | agent->mRedefineAdded = JNI_TRUE1; |
| 760 | } |
| 761 | } |
| 762 | } |
| 763 | |
| 764 | static jobject |
| 765 | getModuleObject(jvmtiEnv* jvmti, |
| 766 | jobject loaderObject, |
| 767 | const char* cname) { |
| 768 | jvmtiError err = JVMTI_ERROR_NONE; |
| 769 | jobject moduleObject = NULL((void*)0); |
| 770 | |
| 771 | /* find last slash in the class name */ |
| 772 | char* last_slash = (cname == NULL((void*)0)) ? NULL((void*)0) : strrchr(cname, '/'); |
| 773 | int len = (last_slash == NULL((void*)0)) ? 0 : (int)(last_slash - cname); |
| 774 | char* pkg_name_buf = (char*)malloc(len + 1); |
| 775 | |
| 776 | if (pkg_name_buf == NULL((void*)0)) { |
| 777 | fprintf(stderr, "OOM error in native tmp buffer allocation")__fprintf_chk (stderr, 2 - 1, "OOM error in native tmp buffer allocation" ); |
| 778 | return NULL((void*)0); |
| 779 | } |
| 780 | if (last_slash != NULL((void*)0)) { |
| 781 | strncpy(pkg_name_buf, cname, len); |
| 782 | } |
| 783 | pkg_name_buf[len] = '\0'; |
| 784 | |
| 785 | err = (*jvmti)->GetNamedModule(jvmti, loaderObject, pkg_name_buf, &moduleObject); |
| 786 | free((void*)pkg_name_buf); |
| 787 | check_phase_ret_blob(err, NULL)if ((err) == JVMTI_ERROR_WRONG_PHASE) { return (((void*)0)); }; |
| 788 | jplis_assert_msg(err == JVMTI_ERROR_NONE, "error in the JVMTI GetNamedModule")JPLISAssertConditionWithMessage((jboolean)(err == JVMTI_ERROR_NONE ), "err == JVMTI_ERROR_NONE", "error in the JVMTI GetNamedModule" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 788); |
| 789 | |
| 790 | return moduleObject; |
| 791 | } |
| 792 | |
| 793 | /* |
| 794 | * Support for the JVMTI callbacks |
| 795 | */ |
| 796 | |
| 797 | void |
| 798 | transformClassFile( JPLISAgent * agent, |
| 799 | JNIEnv * jnienv, |
| 800 | jobject loaderObject, |
| 801 | const char* name, |
| 802 | jclass classBeingRedefined, |
| 803 | jobject protectionDomain, |
| 804 | jint class_data_len, |
| 805 | const unsigned char* class_data, |
| 806 | jint* new_class_data_len, |
| 807 | unsigned char** new_class_data, |
| 808 | jboolean is_retransformer) { |
| 809 | jboolean errorOutstanding = JNI_FALSE0; |
| 810 | jstring classNameStringObject = NULL((void*)0); |
| 811 | jarray classFileBufferObject = NULL((void*)0); |
| 812 | jarray transformedBufferObject = NULL((void*)0); |
| 813 | jsize transformedBufferSize = 0; |
| 814 | unsigned char * resultBuffer = NULL((void*)0); |
| 815 | jboolean shouldRun = JNI_FALSE0; |
| 816 | |
| 817 | /* only do this if we aren't already in the middle of processing a class on this thread */ |
| 818 | shouldRun = tryToAcquireReentrancyToken( |
| 819 | jvmti(agent)agent->mNormalEnvironment.mJVMTIEnv, |
| 820 | NULL((void*)0)); /* this thread */ |
| 821 | |
| 822 | if ( shouldRun ) { |
| 823 | /* first marshall all the parameters */ |
| 824 | classNameStringObject = (*jnienv)->NewStringUTF(jnienv, |
| 825 | name); |
| 826 | errorOutstanding = checkForAndClearThrowable(jnienv); |
| 827 | jplis_assert_msg(!errorOutstanding, "can't create name string")JPLISAssertConditionWithMessage((jboolean)(!errorOutstanding) , "!errorOutstanding", "can't create name string", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 827); |
| 828 | |
| 829 | if ( !errorOutstanding ) { |
| 830 | classFileBufferObject = (*jnienv)->NewByteArray(jnienv, |
| 831 | class_data_len); |
| 832 | errorOutstanding = checkForAndClearThrowable(jnienv); |
| 833 | jplis_assert_msg(!errorOutstanding, "can't create byte array")JPLISAssertConditionWithMessage((jboolean)(!errorOutstanding) , "!errorOutstanding", "can't create byte array", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 833); |
| 834 | } |
| 835 | |
| 836 | if ( !errorOutstanding ) { |
| 837 | jbyte * typedBuffer = (jbyte *) class_data; /* nasty cast, dumb JNI interface, const missing */ |
| 838 | /* The sign cast is safe. The const cast is dumb. */ |
| 839 | (*jnienv)->SetByteArrayRegion( jnienv, |
| 840 | classFileBufferObject, |
| 841 | 0, |
| 842 | class_data_len, |
| 843 | typedBuffer); |
| 844 | errorOutstanding = checkForAndClearThrowable(jnienv); |
| 845 | jplis_assert_msg(!errorOutstanding, "can't set byte array region")JPLISAssertConditionWithMessage((jboolean)(!errorOutstanding) , "!errorOutstanding", "can't set byte array region", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 845); |
| 846 | } |
| 847 | |
| 848 | /* now call the JPL agents to do the transforming */ |
| 849 | /* potential future optimization: may want to skip this if there are none */ |
| 850 | if ( !errorOutstanding ) { |
| 851 | jobject moduleObject = NULL((void*)0); |
| 852 | |
| 853 | if (classBeingRedefined == NULL((void*)0)) { |
| 854 | moduleObject = getModuleObject(jvmti(agent)agent->mNormalEnvironment.mJVMTIEnv, loaderObject, name); |
| 855 | } else { |
| 856 | // Redefine or retransform, InstrumentationImpl.transform() will use |
| 857 | // classBeingRedefined.getModule() to get the module. |
| 858 | } |
| 859 | jplis_assert(agent->mInstrumentationImpl != NULL)JPLISAssertCondition((jboolean)(agent->mInstrumentationImpl != ((void*)0)), "agent->mInstrumentationImpl != NULL", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 859); |
| 860 | jplis_assert(agent->mTransform != NULL)JPLISAssertCondition((jboolean)(agent->mTransform != ((void *)0)), "agent->mTransform != NULL", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 860); |
| 861 | transformedBufferObject = (*jnienv)->CallObjectMethod( |
| 862 | jnienv, |
| 863 | agent->mInstrumentationImpl, |
| 864 | agent->mTransform, |
| 865 | moduleObject, |
| 866 | loaderObject, |
| 867 | classNameStringObject, |
| 868 | classBeingRedefined, |
| 869 | protectionDomain, |
| 870 | classFileBufferObject, |
| 871 | is_retransformer); |
| 872 | errorOutstanding = checkForAndClearThrowable(jnienv); |
| 873 | jplis_assert_msg(!errorOutstanding, "transform method call failed")JPLISAssertConditionWithMessage((jboolean)(!errorOutstanding) , "!errorOutstanding", "transform method call failed", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 873); |
| 874 | } |
| 875 | |
| 876 | /* Finally, unmarshall the parameters (if someone touched the buffer, tell the JVM) */ |
| 877 | if ( !errorOutstanding ) { |
| 878 | if ( transformedBufferObject != NULL((void*)0) ) { |
| 879 | transformedBufferSize = (*jnienv)->GetArrayLength( jnienv, |
| 880 | transformedBufferObject); |
| 881 | errorOutstanding = checkForAndClearThrowable(jnienv); |
| 882 | jplis_assert_msg(!errorOutstanding, "can't get array length")JPLISAssertConditionWithMessage((jboolean)(!errorOutstanding) , "!errorOutstanding", "can't get array length", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 882); |
| 883 | |
| 884 | if ( !errorOutstanding ) { |
| 885 | /* allocate the response buffer with the JVMTI allocate call. |
| 886 | * This is what the JVMTI spec says to do for Class File Load hook responses |
| 887 | */ |
| 888 | jvmtiError allocError = (*(jvmti(agent)agent->mNormalEnvironment.mJVMTIEnv))->Allocate(jvmti(agent)agent->mNormalEnvironment.mJVMTIEnv, |
| 889 | transformedBufferSize, |
| 890 | &resultBuffer); |
| 891 | errorOutstanding = (allocError != JVMTI_ERROR_NONE); |
| 892 | jplis_assert_msg(!errorOutstanding, "can't allocate result buffer")JPLISAssertConditionWithMessage((jboolean)(!errorOutstanding) , "!errorOutstanding", "can't allocate result buffer", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 892); |
| 893 | } |
| 894 | |
| 895 | if ( !errorOutstanding ) { |
| 896 | (*jnienv)->GetByteArrayRegion( jnienv, |
| 897 | transformedBufferObject, |
| 898 | 0, |
| 899 | transformedBufferSize, |
| 900 | (jbyte *) resultBuffer); |
| 901 | errorOutstanding = checkForAndClearThrowable(jnienv); |
| 902 | jplis_assert_msg(!errorOutstanding, "can't get byte array region")JPLISAssertConditionWithMessage((jboolean)(!errorOutstanding) , "!errorOutstanding", "can't get byte array region", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 902); |
| 903 | |
| 904 | /* in this case, we will not return the buffer to the JVMTI, |
| 905 | * so we need to deallocate it ourselves |
| 906 | */ |
| 907 | if ( errorOutstanding ) { |
| 908 | deallocate( jvmti(agent)agent->mNormalEnvironment.mJVMTIEnv, |
| 909 | (void*)resultBuffer); |
| 910 | } |
| 911 | } |
| 912 | |
| 913 | if ( !errorOutstanding ) { |
| 914 | *new_class_data_len = (transformedBufferSize); |
| 915 | *new_class_data = resultBuffer; |
| 916 | } |
| 917 | } |
| 918 | } |
| 919 | |
| 920 | /* release the token */ |
| 921 | releaseReentrancyToken( jvmti(agent)agent->mNormalEnvironment.mJVMTIEnv, |
| 922 | NULL((void*)0)); /* this thread */ |
| 923 | |
| 924 | } |
| 925 | |
| 926 | return; |
| 927 | } |
| 928 | |
| 929 | /* |
| 930 | * Misc. internal utilities. |
| 931 | */ |
| 932 | |
| 933 | /* |
| 934 | * The only checked exceptions we can throw are ClassNotFoundException and |
| 935 | * UnmodifiableClassException. All others map to InternalError. |
| 936 | */ |
| 937 | jthrowable |
| 938 | redefineClassMapper( JNIEnv * jnienv, |
| 939 | jthrowable throwableToMap) { |
| 940 | jthrowable mappedThrowable = NULL((void*)0); |
| 941 | |
| 942 | jplis_assert(isSafeForJNICalls(jnienv))JPLISAssertCondition((jboolean)(isSafeForJNICalls(jnienv)), "isSafeForJNICalls(jnienv)" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 942); |
| 943 | jplis_assert(!isUnchecked(jnienv, throwableToMap))JPLISAssertCondition((jboolean)(!isUnchecked(jnienv, throwableToMap )), "!isUnchecked(jnienv, throwableToMap)", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 943); |
| 944 | |
| 945 | if ( isInstanceofClassName( jnienv, |
| 946 | throwableToMap, |
| 947 | "java/lang/ClassNotFoundException") ) { |
| 948 | mappedThrowable = throwableToMap; |
| 949 | } else { |
| 950 | if ( isInstanceofClassName( jnienv, |
| 951 | throwableToMap, |
| 952 | "java/lang/instrument/UnmodifiableClassException")) { |
| 953 | mappedThrowable = throwableToMap; |
| 954 | } else { |
| 955 | jstring message = NULL((void*)0); |
| 956 | |
| 957 | message = getMessageFromThrowable(jnienv, throwableToMap); |
| 958 | mappedThrowable = createInternalError(jnienv, message); |
| 959 | } |
| 960 | } |
| 961 | |
| 962 | jplis_assert(isSafeForJNICalls(jnienv))JPLISAssertCondition((jboolean)(isSafeForJNICalls(jnienv)), "isSafeForJNICalls(jnienv)" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 962); |
| 963 | return mappedThrowable; |
| 964 | } |
| 965 | |
| 966 | jobjectArray |
| 967 | getObjectArrayFromClasses(JNIEnv* jnienv, jclass* classes, jint classCount) { |
| 968 | jclass classArrayClass = NULL((void*)0); |
| 969 | jobjectArray localArray = NULL((void*)0); |
| 970 | jint classIndex = 0; |
| 971 | jboolean errorOccurred = JNI_FALSE0; |
| 972 | |
| 973 | /* get the class array class */ |
| 974 | classArrayClass = (*jnienv)->FindClass(jnienv, "java/lang/Class"); |
| 975 | errorOccurred = checkForThrowable(jnienv); |
| 976 | |
| 977 | if (!errorOccurred) { |
| 978 | jplis_assert_msg(classArrayClass != NULL, "FindClass returned null class")JPLISAssertConditionWithMessage((jboolean)(classArrayClass != ((void*)0)), "classArrayClass != NULL", "FindClass returned null class" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 978); |
| 979 | |
| 980 | /* create the array for the classes */ |
| 981 | localArray = (*jnienv)->NewObjectArray(jnienv, classCount, classArrayClass, NULL((void*)0)); |
| 982 | errorOccurred = checkForThrowable(jnienv); |
| 983 | |
| 984 | if (!errorOccurred) { |
| 985 | jplis_assert_msg(localArray != NULL, "NewObjectArray returned null array")JPLISAssertConditionWithMessage((jboolean)(localArray != ((void *)0)), "localArray != NULL", "NewObjectArray returned null array" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 985); |
| 986 | |
| 987 | /* now copy refs to all the classes and put them into the array */ |
| 988 | for (classIndex = 0; classIndex < classCount; classIndex++) { |
| 989 | /* put class into array */ |
| 990 | (*jnienv)->SetObjectArrayElement(jnienv, localArray, classIndex, classes[classIndex]); |
| 991 | errorOccurred = checkForThrowable(jnienv); |
| 992 | |
| 993 | if (errorOccurred) { |
| 994 | localArray = NULL((void*)0); |
| 995 | break; |
| 996 | } |
| 997 | } |
| 998 | } |
| 999 | } |
| 1000 | |
| 1001 | return localArray; |
| 1002 | } |
| 1003 | |
| 1004 | |
| 1005 | /* Return the environment with the retransformation capability. |
| 1006 | * Create it if it doesn't exist. |
| 1007 | * Return NULL if it can't be created. |
| 1008 | */ |
| 1009 | jvmtiEnv * |
| 1010 | retransformableEnvironment(JPLISAgent * agent) { |
| 1011 | jvmtiEnv * retransformerEnv = NULL((void*)0); |
| 1012 | jint jnierror = JNI_OK0; |
| 1013 | jvmtiCapabilities desiredCapabilities; |
| 1014 | jvmtiEventCallbacks callbacks; |
| 1015 | jvmtiError jvmtierror; |
| 1016 | |
| 1017 | if (agent->mRetransformEnvironment.mJVMTIEnv != NULL((void*)0)) { |
| 1018 | return agent->mRetransformEnvironment.mJVMTIEnv; |
| 1019 | } |
| 1020 | jnierror = (*agent->mJVM)->GetEnv( agent->mJVM, |
| 1021 | (void **) &retransformerEnv, |
| 1022 | JVMTI_VERSION_1_1); |
| 1023 | if ( jnierror != JNI_OK0 ) { |
| 1024 | return NULL((void*)0); |
| 1025 | } |
| 1026 | jvmtierror = (*retransformerEnv)->GetCapabilities(retransformerEnv, &desiredCapabilities); |
| 1027 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE ), "jvmtierror == JVMTI_ERROR_NONE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1027); |
| 1028 | desiredCapabilities.can_retransform_classes = 1; |
| 1029 | if (agent->mNativeMethodPrefixAdded) { |
| 1030 | desiredCapabilities.can_set_native_method_prefix = 1; |
| 1031 | } |
| 1032 | |
| 1033 | jvmtierror = (*retransformerEnv)->AddCapabilities(retransformerEnv, &desiredCapabilities); |
| 1034 | if (jvmtierror != JVMTI_ERROR_NONE) { |
| 1035 | /* cannot get the capability, dispose of the retransforming environment */ |
| 1036 | jvmtierror = (*retransformerEnv)->DisposeEnvironment(retransformerEnv); |
| 1037 | jplis_assert(jvmtierror == JVMTI_ERROR_NOT_AVAILABLE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NOT_AVAILABLE ), "jvmtierror == JVMTI_ERROR_NOT_AVAILABLE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1037); |
| 1038 | return NULL((void*)0); |
| 1039 | } |
| 1040 | memset(&callbacks, 0, sizeof(callbacks)); |
| 1041 | callbacks.ClassFileLoadHook = &eventHandlerClassFileLoadHook; |
| 1042 | |
| 1043 | jvmtierror = (*retransformerEnv)->SetEventCallbacks(retransformerEnv, |
| 1044 | &callbacks, |
| 1045 | sizeof(callbacks)); |
| 1046 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE ), "jvmtierror == JVMTI_ERROR_NONE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1046); |
| 1047 | if (jvmtierror == JVMTI_ERROR_NONE) { |
| 1048 | // install the retransforming environment |
| 1049 | agent->mRetransformEnvironment.mJVMTIEnv = retransformerEnv; |
| 1050 | agent->mRetransformEnvironment.mIsRetransformer = JNI_TRUE1; |
| 1051 | |
| 1052 | // Make it for ClassFileLoadHook handling |
| 1053 | jvmtierror = (*retransformerEnv)->SetEnvironmentLocalStorage( |
| 1054 | retransformerEnv, |
| 1055 | &(agent->mRetransformEnvironment)); |
| 1056 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE ), "jvmtierror == JVMTI_ERROR_NONE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1056); |
| 1057 | if (jvmtierror == JVMTI_ERROR_NONE) { |
| 1058 | return retransformerEnv; |
| 1059 | } |
| 1060 | } |
| 1061 | return NULL((void*)0); |
| 1062 | } |
| 1063 | |
| 1064 | |
| 1065 | /* |
| 1066 | * Underpinnings for native methods |
| 1067 | */ |
| 1068 | |
| 1069 | jboolean |
| 1070 | isModifiableClass(JNIEnv * jnienv, JPLISAgent * agent, jclass clazz) { |
| 1071 | jvmtiEnv * jvmtienv = jvmti(agent)agent->mNormalEnvironment.mJVMTIEnv; |
| 1072 | jvmtiError jvmtierror; |
| 1073 | jboolean is_modifiable = JNI_FALSE0; |
| 1074 | |
| 1075 | jvmtierror = (*jvmtienv)->IsModifiableClass( jvmtienv, |
| 1076 | clazz, |
| 1077 | &is_modifiable); |
| 1078 | check_phase_ret_false(jvmtierror)if ((jvmtierror) == JVMTI_ERROR_WRONG_PHASE) { return (jboolean ) 0; }; |
| 1079 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE ), "jvmtierror == JVMTI_ERROR_NONE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1079); |
| 1080 | |
| 1081 | return is_modifiable; |
| 1082 | } |
| 1083 | |
| 1084 | jboolean |
| 1085 | isRetransformClassesSupported(JNIEnv * jnienv, JPLISAgent * agent) { |
| 1086 | return agent->mRetransformEnvironment.mIsRetransformer; |
| 1087 | } |
| 1088 | |
| 1089 | void |
| 1090 | setHasTransformers(JNIEnv * jnienv, JPLISAgent * agent, jboolean has) { |
| 1091 | jvmtiEnv * jvmtienv = jvmti(agent)agent->mNormalEnvironment.mJVMTIEnv; |
| 1092 | jvmtiError jvmtierror; |
| 1093 | |
| 1094 | jplis_assert(jvmtienv != NULL)JPLISAssertCondition((jboolean)(jvmtienv != ((void*)0)), "jvmtienv != NULL" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1094); |
| 1095 | jvmtierror = (*jvmtienv)->SetEventNotificationMode( |
| 1096 | jvmtienv, |
| 1097 | has? JVMTI_ENABLE : JVMTI_DISABLE, |
| 1098 | JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, |
| 1099 | NULL((void*)0) /* all threads */); |
| 1100 | check_phase_ret(jvmtierror)if ((jvmtierror) == JVMTI_ERROR_WRONG_PHASE) { return; }; |
| 1101 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE ), "jvmtierror == JVMTI_ERROR_NONE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1101); |
| 1102 | } |
| 1103 | |
| 1104 | void |
| 1105 | setHasRetransformableTransformers(JNIEnv * jnienv, JPLISAgent * agent, jboolean has) { |
| 1106 | jvmtiEnv * retransformerEnv = retransformableEnvironment(agent); |
| 1107 | jvmtiError jvmtierror; |
| 1108 | |
| 1109 | jplis_assert(retransformerEnv != NULL)JPLISAssertCondition((jboolean)(retransformerEnv != ((void*)0 )), "retransformerEnv != NULL", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1109); |
| 1110 | jvmtierror = (*retransformerEnv)->SetEventNotificationMode( |
| 1111 | retransformerEnv, |
| 1112 | has? JVMTI_ENABLE : JVMTI_DISABLE, |
| 1113 | JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, |
| 1114 | NULL((void*)0) /* all threads */); |
| 1115 | check_phase_ret(jvmtierror)if ((jvmtierror) == JVMTI_ERROR_WRONG_PHASE) { return; }; |
| 1116 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE ), "jvmtierror == JVMTI_ERROR_NONE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1116); |
| 1117 | } |
| 1118 | |
| 1119 | void |
| 1120 | retransformClasses(JNIEnv * jnienv, JPLISAgent * agent, jobjectArray classes) { |
| 1121 | jvmtiEnv * retransformerEnv = retransformableEnvironment(agent); |
| 1122 | jboolean errorOccurred = JNI_FALSE0; |
| 1123 | jvmtiError errorCode = JVMTI_ERROR_NONE; |
| 1124 | jsize numClasses = 0; |
| 1125 | jclass * classArray = NULL((void*)0); |
| 1126 | |
| 1127 | /* This is supposed to be checked by caller, but just to be sure */ |
| 1128 | if (retransformerEnv == NULL((void*)0)) { |
| 1129 | jplis_assert(retransformerEnv != NULL)JPLISAssertCondition((jboolean)(retransformerEnv != ((void*)0 )), "retransformerEnv != NULL", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1129); |
| 1130 | errorOccurred = JNI_TRUE1; |
| 1131 | errorCode = JVMTI_ERROR_MUST_POSSESS_CAPABILITY; |
| 1132 | } |
| 1133 | |
| 1134 | /* This was supposed to be checked by caller too */ |
| 1135 | if (!errorOccurred && classes == NULL((void*)0)) { |
| 1136 | jplis_assert(classes != NULL)JPLISAssertCondition((jboolean)(classes != ((void*)0)), "classes != NULL" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1136); |
| 1137 | errorOccurred = JNI_TRUE1; |
| 1138 | errorCode = JVMTI_ERROR_NULL_POINTER; |
| 1139 | } |
| 1140 | |
| 1141 | if (!errorOccurred) { |
| 1142 | numClasses = (*jnienv)->GetArrayLength(jnienv, classes); |
| 1143 | errorOccurred = checkForThrowable(jnienv); |
| 1144 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1144); |
| 1145 | |
| 1146 | if (!errorOccurred && numClasses == 0) { |
| 1147 | jplis_assert(numClasses != 0)JPLISAssertCondition((jboolean)(numClasses != 0), "numClasses != 0" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1147); |
| 1148 | errorOccurred = JNI_TRUE1; |
| 1149 | errorCode = JVMTI_ERROR_NULL_POINTER; |
| 1150 | } |
| 1151 | } |
| 1152 | |
| 1153 | if (!errorOccurred) { |
| 1154 | classArray = (jclass *) allocate(retransformerEnv, |
| 1155 | numClasses * sizeof(jclass)); |
| 1156 | errorOccurred = (classArray == NULL((void*)0)); |
| 1157 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1157); |
| 1158 | if (errorOccurred) { |
| 1159 | errorCode = JVMTI_ERROR_OUT_OF_MEMORY; |
| 1160 | } |
| 1161 | } |
| 1162 | |
| 1163 | if (!errorOccurred) { |
| 1164 | jint index; |
| 1165 | for (index = 0; index < numClasses; index++) { |
| 1166 | classArray[index] = (*jnienv)->GetObjectArrayElement(jnienv, classes, index); |
| 1167 | errorOccurred = checkForThrowable(jnienv); |
| 1168 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1168); |
| 1169 | if (errorOccurred) { |
| 1170 | break; |
| 1171 | } |
| 1172 | |
| 1173 | if (classArray[index] == NULL((void*)0)) { |
| 1174 | jplis_assert(classArray[index] != NULL)JPLISAssertCondition((jboolean)(classArray[index] != ((void*) 0)), "classArray[index] != NULL", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1174); |
| 1175 | errorOccurred = JNI_TRUE1; |
| 1176 | errorCode = JVMTI_ERROR_NULL_POINTER; |
| 1177 | break; |
| 1178 | } |
| 1179 | } |
| 1180 | } |
| 1181 | |
| 1182 | if (!errorOccurred) { |
| 1183 | errorCode = (*retransformerEnv)->RetransformClasses(retransformerEnv, |
| 1184 | numClasses, classArray); |
| 1185 | errorOccurred = (errorCode != JVMTI_ERROR_NONE); |
| 1186 | } |
| 1187 | |
| 1188 | /* Give back the buffer if we allocated it. Throw any exceptions after. |
| 1189 | */ |
| 1190 | if (classArray != NULL((void*)0)) { |
| 1191 | deallocate(retransformerEnv, (void*)classArray); |
| 1192 | } |
| 1193 | |
| 1194 | /* Return back if we executed the JVMTI API in a wrong phase |
| 1195 | */ |
| 1196 | check_phase_ret(errorCode)if ((errorCode) == JVMTI_ERROR_WRONG_PHASE) { return; }; |
| 1197 | |
| 1198 | if (errorCode != JVMTI_ERROR_NONE) { |
| 1199 | createAndThrowThrowableFromJVMTIErrorCode(jnienv, errorCode); |
| 1200 | } |
| 1201 | |
| 1202 | mapThrownThrowableIfNecessary(jnienv, redefineClassMapper); |
| 1203 | } |
| 1204 | |
| 1205 | /* |
| 1206 | * Java code must not call this with a null list or a zero-length list. |
| 1207 | */ |
| 1208 | void |
| 1209 | redefineClasses(JNIEnv * jnienv, JPLISAgent * agent, jobjectArray classDefinitions) { |
| 1210 | jvmtiEnv* jvmtienv = jvmti(agent)agent->mNormalEnvironment.mJVMTIEnv; |
| 1211 | jboolean errorOccurred = JNI_FALSE0; |
| 1212 | jclass classDefClass = NULL((void*)0); |
| 1213 | jmethodID getDefinitionClassMethodID = NULL((void*)0); |
| 1214 | jmethodID getDefinitionClassFileMethodID = NULL((void*)0); |
| 1215 | jvmtiClassDefinition* classDefs = NULL((void*)0); |
| 1216 | jbyteArray* targetFiles = NULL((void*)0); |
| 1217 | jsize numDefs = 0; |
| 1218 | |
| 1219 | jplis_assert(classDefinitions != NULL)JPLISAssertCondition((jboolean)(classDefinitions != ((void*)0 )), "classDefinitions != NULL", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1219); |
| 1220 | |
| 1221 | numDefs = (*jnienv)->GetArrayLength(jnienv, classDefinitions); |
| 1222 | errorOccurred = checkForThrowable(jnienv); |
| 1223 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1223); |
| 1224 | |
| 1225 | if (!errorOccurred) { |
| 1226 | jplis_assert(numDefs > 0)JPLISAssertCondition((jboolean)(numDefs > 0), "numDefs > 0" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1226); |
| 1227 | /* get method IDs for methods to call on class definitions */ |
| 1228 | classDefClass = (*jnienv)->FindClass(jnienv, "java/lang/instrument/ClassDefinition"); |
| 1229 | errorOccurred = checkForThrowable(jnienv); |
| 1230 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1230); |
| 1231 | } |
| 1232 | |
| 1233 | if (!errorOccurred) { |
| 1234 | getDefinitionClassMethodID = (*jnienv)->GetMethodID( jnienv, |
| 1235 | classDefClass, |
| 1236 | "getDefinitionClass", |
| 1237 | "()Ljava/lang/Class;"); |
| 1238 | errorOccurred = checkForThrowable(jnienv); |
| 1239 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1239); |
| 1240 | } |
| 1241 | |
| 1242 | if (!errorOccurred) { |
| 1243 | getDefinitionClassFileMethodID = (*jnienv)->GetMethodID( jnienv, |
| 1244 | classDefClass, |
| 1245 | "getDefinitionClassFile", |
| 1246 | "()[B"); |
| 1247 | errorOccurred = checkForThrowable(jnienv); |
| 1248 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1248); |
| 1249 | } |
| 1250 | |
| 1251 | if (!errorOccurred) { |
| 1252 | classDefs = (jvmtiClassDefinition *) allocate( |
| 1253 | jvmtienv, |
| 1254 | numDefs * sizeof(jvmtiClassDefinition)); |
| 1255 | errorOccurred = (classDefs == NULL((void*)0)); |
| 1256 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1256); |
| 1257 | if ( errorOccurred ) { |
| 1258 | createAndThrowThrowableFromJVMTIErrorCode(jnienv, JVMTI_ERROR_OUT_OF_MEMORY); |
| 1259 | } |
| 1260 | |
| 1261 | else { |
| 1262 | /* |
| 1263 | * We have to save the targetFile values that we compute so |
| 1264 | * that we can release the class_bytes arrays that are |
| 1265 | * returned by GetByteArrayElements(). In case of a JNI |
| 1266 | * error, we can't (easily) recompute the targetFile values |
| 1267 | * and we still want to free any memory we allocated. |
| 1268 | */ |
| 1269 | targetFiles = (jbyteArray *) allocate(jvmtienv, |
| 1270 | numDefs * sizeof(jbyteArray)); |
| 1271 | errorOccurred = (targetFiles == NULL((void*)0)); |
| 1272 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1272); |
| 1273 | if ( errorOccurred ) { |
| 1274 | deallocate(jvmtienv, (void*)classDefs); |
| 1275 | createAndThrowThrowableFromJVMTIErrorCode(jnienv, |
| 1276 | JVMTI_ERROR_OUT_OF_MEMORY); |
| 1277 | } |
| 1278 | else { |
| 1279 | jint i, j; |
| 1280 | |
| 1281 | // clear classDefs so we can correctly free memory during errors |
| 1282 | memset(classDefs, 0, numDefs * sizeof(jvmtiClassDefinition)); |
| 1283 | |
| 1284 | for (i = 0; i < numDefs; i++) { |
| 1285 | jclass classDef = NULL((void*)0); |
| 1286 | |
| 1287 | classDef = (*jnienv)->GetObjectArrayElement(jnienv, classDefinitions, i); |
| 1288 | errorOccurred = checkForThrowable(jnienv); |
| 1289 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1289); |
| 1290 | if (errorOccurred) { |
| 1291 | break; |
| 1292 | } |
| 1293 | |
| 1294 | classDefs[i].klass = (*jnienv)->CallObjectMethod(jnienv, classDef, getDefinitionClassMethodID); |
| 1295 | errorOccurred = checkForThrowable(jnienv); |
| 1296 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1296); |
| 1297 | if (errorOccurred) { |
| 1298 | break; |
| 1299 | } |
| 1300 | |
| 1301 | targetFiles[i] = (*jnienv)->CallObjectMethod(jnienv, classDef, getDefinitionClassFileMethodID); |
| 1302 | errorOccurred = checkForThrowable(jnienv); |
| 1303 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1303); |
| 1304 | if (errorOccurred) { |
| 1305 | break; |
| 1306 | } |
| 1307 | |
| 1308 | classDefs[i].class_byte_count = (*jnienv)->GetArrayLength(jnienv, targetFiles[i]); |
| 1309 | errorOccurred = checkForThrowable(jnienv); |
| 1310 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1310); |
| 1311 | if (errorOccurred) { |
| 1312 | break; |
| 1313 | } |
| 1314 | |
| 1315 | /* |
| 1316 | * Allocate class_bytes last so we don't have to free |
| 1317 | * memory on a partial row error. |
| 1318 | */ |
| 1319 | classDefs[i].class_bytes = (unsigned char*)(*jnienv)->GetByteArrayElements(jnienv, targetFiles[i], NULL((void*)0)); |
| 1320 | errorOccurred = checkForThrowable(jnienv); |
| 1321 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1321); |
| 1322 | if (errorOccurred) { |
| 1323 | break; |
| 1324 | } |
| 1325 | } |
| 1326 | |
| 1327 | if (!errorOccurred) { |
| 1328 | jvmtiError errorCode = JVMTI_ERROR_NONE; |
| 1329 | errorCode = (*jvmtienv)->RedefineClasses(jvmtienv, numDefs, classDefs); |
| 1330 | if (errorCode == JVMTI_ERROR_WRONG_PHASE) { |
| 1331 | /* insulate caller from the wrong phase error */ |
| 1332 | errorCode = JVMTI_ERROR_NONE; |
Value stored to 'errorCode' is never read | |
| 1333 | } else { |
| 1334 | errorOccurred = (errorCode != JVMTI_ERROR_NONE); |
| 1335 | if ( errorOccurred ) { |
| 1336 | createAndThrowThrowableFromJVMTIErrorCode(jnienv, errorCode); |
| 1337 | } |
| 1338 | } |
| 1339 | } |
| 1340 | |
| 1341 | /* |
| 1342 | * Cleanup memory that we allocated above. If we had a |
| 1343 | * JNI error, a JVM/TI error or no errors, index 'i' |
| 1344 | * tracks how far we got in processing the classDefs |
| 1345 | * array. Note: ReleaseByteArrayElements() is safe to |
| 1346 | * call with a JNI exception pending. |
| 1347 | */ |
| 1348 | for (j = 0; j < i; j++) { |
| 1349 | if ((jbyte *)classDefs[j].class_bytes != NULL((void*)0)) { |
| 1350 | (*jnienv)->ReleaseByteArrayElements(jnienv, |
| 1351 | targetFiles[j], (jbyte *)classDefs[j].class_bytes, |
| 1352 | 0 /* copy back and free */); |
| 1353 | /* |
| 1354 | * Only check for error if we didn't already have one |
| 1355 | * so we don't overwrite errorOccurred. |
| 1356 | */ |
| 1357 | if (!errorOccurred) { |
| 1358 | errorOccurred = checkForThrowable(jnienv); |
| 1359 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1359); |
| 1360 | } |
| 1361 | } |
| 1362 | } |
| 1363 | deallocate(jvmtienv, (void*)targetFiles); |
| 1364 | deallocate(jvmtienv, (void*)classDefs); |
| 1365 | } |
| 1366 | } |
| 1367 | } |
| 1368 | |
| 1369 | mapThrownThrowableIfNecessary(jnienv, redefineClassMapper); |
| 1370 | } |
| 1371 | |
| 1372 | /* Cheesy sharing. ClassLoader may be null. */ |
| 1373 | jobjectArray |
| 1374 | commonGetClassList( JNIEnv * jnienv, |
| 1375 | JPLISAgent * agent, |
| 1376 | jobject classLoader, |
| 1377 | ClassListFetcher fetcher) { |
| 1378 | jvmtiEnv * jvmtienv = jvmti(agent)agent->mNormalEnvironment.mJVMTIEnv; |
| 1379 | jboolean errorOccurred = JNI_FALSE0; |
| 1380 | jvmtiError jvmtierror = JVMTI_ERROR_NONE; |
| 1381 | jint classCount = 0; |
| 1382 | jclass * classes = NULL((void*)0); |
| 1383 | jobjectArray localArray = NULL((void*)0); |
| 1384 | |
| 1385 | /* retrieve the classes from the JVMTI agent */ |
| 1386 | jvmtierror = (*fetcher)( jvmtienv, |
| 1387 | classLoader, |
| 1388 | &classCount, |
| 1389 | &classes); |
| 1390 | check_phase_ret_blob(jvmtierror, localArray)if ((jvmtierror) == JVMTI_ERROR_WRONG_PHASE) { return (localArray ); }; |
| 1391 | errorOccurred = (jvmtierror != JVMTI_ERROR_NONE); |
| 1392 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1392); |
| 1393 | |
| 1394 | if ( errorOccurred ) { |
| 1395 | createAndThrowThrowableFromJVMTIErrorCode(jnienv, jvmtierror); |
| 1396 | } else { |
| 1397 | localArray = getObjectArrayFromClasses( jnienv, |
| 1398 | classes, |
| 1399 | classCount); |
| 1400 | errorOccurred = checkForThrowable(jnienv); |
| 1401 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1401); |
| 1402 | |
| 1403 | /* do this whether or not we saw a problem */ |
| 1404 | deallocate(jvmtienv, (void*)classes); |
| 1405 | } |
| 1406 | |
| 1407 | mapThrownThrowableIfNecessary(jnienv, mapAllCheckedToInternalErrorMapper); |
| 1408 | return localArray; |
| 1409 | |
| 1410 | } |
| 1411 | |
| 1412 | jvmtiError |
| 1413 | getAllLoadedClassesClassListFetcher( jvmtiEnv * jvmtienv, |
| 1414 | jobject classLoader, |
| 1415 | jint * classCount, |
| 1416 | jclass ** classes) { |
| 1417 | return (*jvmtienv)->GetLoadedClasses(jvmtienv, classCount, classes); |
| 1418 | } |
| 1419 | |
| 1420 | jobjectArray |
| 1421 | getAllLoadedClasses(JNIEnv * jnienv, JPLISAgent * agent) { |
| 1422 | return commonGetClassList( jnienv, |
| 1423 | agent, |
| 1424 | NULL((void*)0), |
| 1425 | getAllLoadedClassesClassListFetcher); |
| 1426 | } |
| 1427 | |
| 1428 | jvmtiError |
| 1429 | getInitiatedClassesClassListFetcher( jvmtiEnv * jvmtienv, |
| 1430 | jobject classLoader, |
| 1431 | jint * classCount, |
| 1432 | jclass ** classes) { |
| 1433 | return (*jvmtienv)->GetClassLoaderClasses(jvmtienv, classLoader, classCount, classes); |
| 1434 | } |
| 1435 | |
| 1436 | |
| 1437 | jobjectArray |
| 1438 | getInitiatedClasses(JNIEnv * jnienv, JPLISAgent * agent, jobject classLoader) { |
| 1439 | return commonGetClassList( jnienv, |
| 1440 | agent, |
| 1441 | classLoader, |
| 1442 | getInitiatedClassesClassListFetcher); |
| 1443 | } |
| 1444 | |
| 1445 | jlong |
| 1446 | getObjectSize(JNIEnv * jnienv, JPLISAgent * agent, jobject objectToSize) { |
| 1447 | jvmtiEnv * jvmtienv = jvmti(agent)agent->mNormalEnvironment.mJVMTIEnv; |
| 1448 | jlong objectSize = -1; |
| 1449 | jvmtiError jvmtierror = JVMTI_ERROR_NONE; |
| 1450 | |
| 1451 | jvmtierror = (*jvmtienv)->GetObjectSize(jvmtienv, objectToSize, &objectSize); |
| 1452 | check_phase_ret_0(jvmtierror)if ((jvmtierror) == JVMTI_ERROR_WRONG_PHASE) { return 0; }; |
| 1453 | jplis_assert(jvmtierror == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(jvmtierror == JVMTI_ERROR_NONE ), "jvmtierror == JVMTI_ERROR_NONE", "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1453); |
| 1454 | if ( jvmtierror != JVMTI_ERROR_NONE ) { |
| 1455 | createAndThrowThrowableFromJVMTIErrorCode(jnienv, jvmtierror); |
| 1456 | } |
| 1457 | |
| 1458 | mapThrownThrowableIfNecessary(jnienv, mapAllCheckedToInternalErrorMapper); |
| 1459 | return objectSize; |
| 1460 | } |
| 1461 | |
| 1462 | void |
| 1463 | appendToClassLoaderSearch(JNIEnv * jnienv, JPLISAgent * agent, jstring jarFile, jboolean isBootLoader) |
| 1464 | { |
| 1465 | jvmtiEnv * jvmtienv = jvmti(agent)agent->mNormalEnvironment.mJVMTIEnv; |
| 1466 | jboolean errorOutstanding; |
| 1467 | jvmtiError jvmtierror; |
| 1468 | const char* utf8Chars; |
| 1469 | jsize utf8Len; |
| 1470 | jboolean isCopy; |
| 1471 | char platformChars[MAXPATHLEN4096]; |
| 1472 | int platformLen; |
| 1473 | |
| 1474 | utf8Len = (*jnienv)->GetStringUTFLength(jnienv, jarFile); |
| 1475 | errorOutstanding = checkForAndClearThrowable(jnienv); |
| 1476 | |
| 1477 | if (!errorOutstanding) { |
| 1478 | utf8Chars = (*jnienv)->GetStringUTFChars(jnienv, jarFile, &isCopy); |
| 1479 | errorOutstanding = checkForAndClearThrowable(jnienv); |
| 1480 | |
| 1481 | if (!errorOutstanding && utf8Chars != NULL((void*)0)) { |
| 1482 | /* |
| 1483 | * JVMTI spec'ed to use modified UTF8. At this time this is not implemented |
| 1484 | * the platform encoding is used. |
| 1485 | */ |
| 1486 | platformLen = convertUtf8ToPlatformString((char*)utf8Chars, utf8Len, platformChars, MAXPATHLEN4096); |
| 1487 | if (platformLen < 0) { |
| 1488 | createAndThrowInternalError(jnienv); |
| 1489 | (*jnienv)->ReleaseStringUTFChars(jnienv, jarFile, utf8Chars); |
| 1490 | return; |
| 1491 | } |
| 1492 | |
| 1493 | (*jnienv)->ReleaseStringUTFChars(jnienv, jarFile, utf8Chars); |
| 1494 | errorOutstanding = checkForAndClearThrowable(jnienv); |
| 1495 | |
| 1496 | if (!errorOutstanding) { |
| 1497 | |
| 1498 | if (isBootLoader) { |
| 1499 | jvmtierror = (*jvmtienv)->AddToBootstrapClassLoaderSearch(jvmtienv, platformChars); |
| 1500 | } else { |
| 1501 | jvmtierror = (*jvmtienv)->AddToSystemClassLoaderSearch(jvmtienv, platformChars); |
| 1502 | } |
| 1503 | check_phase_ret(jvmtierror)if ((jvmtierror) == JVMTI_ERROR_WRONG_PHASE) { return; }; |
| 1504 | |
| 1505 | if ( jvmtierror != JVMTI_ERROR_NONE ) { |
| 1506 | createAndThrowThrowableFromJVMTIErrorCode(jnienv, jvmtierror); |
| 1507 | } |
| 1508 | } |
| 1509 | } |
| 1510 | } |
| 1511 | |
| 1512 | mapThrownThrowableIfNecessary(jnienv, mapAllCheckedToInternalErrorMapper); |
| 1513 | } |
| 1514 | |
| 1515 | /* |
| 1516 | * Set the prefixes used to wrap native methods (so they can be instrumented). |
| 1517 | * Each transform can set a prefix, any that have been set come in as prefixArray. |
| 1518 | * Convert them in native strings in a native array then call JVM TI. |
| 1519 | * One a given call, this function handles either the prefixes for retransformable |
| 1520 | * transforms or for normal transforms. |
| 1521 | */ |
| 1522 | void |
| 1523 | setNativeMethodPrefixes(JNIEnv * jnienv, JPLISAgent * agent, jobjectArray prefixArray, |
| 1524 | jboolean isRetransformable) { |
| 1525 | jvmtiEnv* jvmtienv; |
| 1526 | jvmtiError err = JVMTI_ERROR_NONE; |
| 1527 | jsize arraySize; |
| 1528 | jboolean errorOccurred = JNI_FALSE0; |
| 1529 | |
| 1530 | jplis_assert(prefixArray != NULL)JPLISAssertCondition((jboolean)(prefixArray != ((void*)0)), "prefixArray != NULL" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1530); |
| 1531 | |
| 1532 | if (isRetransformable) { |
| 1533 | jvmtienv = agent->mRetransformEnvironment.mJVMTIEnv; |
| 1534 | } else { |
| 1535 | jvmtienv = agent->mNormalEnvironment.mJVMTIEnv; |
| 1536 | } |
| 1537 | arraySize = (*jnienv)->GetArrayLength(jnienv, prefixArray); |
| 1538 | errorOccurred = checkForThrowable(jnienv); |
| 1539 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1539); |
| 1540 | |
| 1541 | if (!errorOccurred) { |
| 1542 | /* allocate the native to hold the native prefixes */ |
| 1543 | const char** prefixes = (const char**) allocate(jvmtienv, |
| 1544 | arraySize * sizeof(char*)); |
| 1545 | /* since JNI ReleaseStringUTFChars needs the jstring from which the native |
| 1546 | * string was allocated, we store them in a parallel array */ |
| 1547 | jstring* originForRelease = (jstring*) allocate(jvmtienv, |
| 1548 | arraySize * sizeof(jstring)); |
| 1549 | errorOccurred = (prefixes == NULL((void*)0) || originForRelease == NULL((void*)0)); |
| 1550 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1550); |
| 1551 | if ( errorOccurred ) { |
| 1552 | createAndThrowThrowableFromJVMTIErrorCode(jnienv, JVMTI_ERROR_OUT_OF_MEMORY); |
| 1553 | } |
| 1554 | else { |
| 1555 | jint inx = 0; |
| 1556 | jint i; |
| 1557 | for (i = 0; i < arraySize; i++) { |
| 1558 | jstring prefixStr = NULL((void*)0); |
| 1559 | const char* prefix; |
| 1560 | jsize prefixLen; |
| 1561 | jboolean isCopy; |
| 1562 | |
| 1563 | prefixStr = (jstring) ((*jnienv)->GetObjectArrayElement(jnienv, |
| 1564 | prefixArray, i)); |
| 1565 | errorOccurred = checkForThrowable(jnienv); |
| 1566 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1566); |
| 1567 | if (errorOccurred) { |
| 1568 | break; |
| 1569 | } |
| 1570 | if (prefixStr == NULL((void*)0)) { |
| 1571 | continue; |
| 1572 | } |
| 1573 | |
| 1574 | prefixLen = (*jnienv)->GetStringUTFLength(jnienv, prefixStr); |
| 1575 | errorOccurred = checkForThrowable(jnienv); |
| 1576 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1576); |
| 1577 | if (errorOccurred) { |
| 1578 | break; |
| 1579 | } |
| 1580 | |
| 1581 | if (prefixLen > 0) { |
| 1582 | prefix = (*jnienv)->GetStringUTFChars(jnienv, prefixStr, &isCopy); |
| 1583 | errorOccurred = checkForThrowable(jnienv); |
| 1584 | jplis_assert(!errorOccurred)JPLISAssertCondition((jboolean)(!errorOccurred), "!errorOccurred" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1584); |
| 1585 | if (!errorOccurred && prefix != NULL((void*)0)) { |
| 1586 | prefixes[inx] = prefix; |
| 1587 | originForRelease[inx] = prefixStr; |
| 1588 | ++inx; |
| 1589 | } |
| 1590 | } |
| 1591 | } |
| 1592 | |
| 1593 | err = (*jvmtienv)->SetNativeMethodPrefixes(jvmtienv, inx, (char**)prefixes); |
| 1594 | /* can be called from any phase */ |
| 1595 | jplis_assert(err == JVMTI_ERROR_NONE)JPLISAssertCondition((jboolean)(err == JVMTI_ERROR_NONE), "err == JVMTI_ERROR_NONE" , "/home/daniel/Projects/java/jdk/src/java.instrument/share/native/libinstrument/JPLISAgent.c" , 1595); |
| 1596 | |
| 1597 | for (i = 0; i < inx; i++) { |
| 1598 | (*jnienv)->ReleaseStringUTFChars(jnienv, originForRelease[i], prefixes[i]); |
| 1599 | } |
| 1600 | } |
| 1601 | deallocate(jvmtienv, (void*)prefixes); |
| 1602 | deallocate(jvmtienv, (void*)originForRelease); |
| 1603 | } |
| 1604 | } |