author | jcbeyler |
Wed, 21 Nov 2018 10:46:45 -0800 | |
changeset 52642 | 9cfc8b0c45fd |
parent 51729 | 1ebe04845112 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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#include <stdio.h> |
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#include <string.h> |
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#include <jvmti.h> |
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#include "agent_common.h" |
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#include "JVMTITools.h" |
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extern "C" { |
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#define STATUS_FAILED 2 |
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#define PASSED 0 |
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static jvmtiEnv *jvmti = NULL; |
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static jvmtiCapabilities caps; |
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static jvmtiEventCallbacks callbacks; |
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static int watch_ev = 0; /* ignore JVMTI events by default */ |
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static int gen_ev = 0; /* number of generated events */ |
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static int result = PASSED; /* total result of the test */ |
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static jrawMonitorID watch_ev_monitor; |
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static void set_watch_ev(int value) { |
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jvmti->RawMonitorEnter(watch_ev_monitor); |
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watch_ev = value; |
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jvmti->RawMonitorExit(watch_ev_monitor); |
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} |
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void JNICALL |
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NativeMethodBind(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thr, jmethodID methodID, void * pAddress, void ** pNewAddress) { |
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jvmti->RawMonitorEnter(watch_ev_monitor); |
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if (watch_ev && isThreadExpected(jvmti_env, thr)) { |
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printf("#### JVMTI_EVENT_NATIVE_METHOD_BIND occured ####\n"); |
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gen_ev++; |
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} |
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jvmti->RawMonitorExit(watch_ev_monitor); |
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} |
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#ifdef STATIC_BUILD |
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JNIEXPORT jint JNICALL Agent_OnLoad_redefclass031(JavaVM *jvm, char *options, void *reserved) { |
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return Agent_Initialize(jvm, options, reserved); |
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} |
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JNIEXPORT jint JNICALL Agent_OnAttach_redefclass031(JavaVM *jvm, char *options, void *reserved) { |
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return Agent_Initialize(jvm, options, reserved); |
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} |
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JNIEXPORT jint JNI_OnLoad_redefclass031(JavaVM *jvm, char *options, void *reserved) { |
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return JNI_VERSION_1_8; |
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} |
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#endif |
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jint Agent_Initialize(JavaVM *vm, char *options, void *reserved) { |
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jint res; |
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jvmtiError err; |
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res = vm->GetEnv((void **) &jvmti, JVMTI_VERSION_1_1); |
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if (res != JNI_OK) { |
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printf("%s: Failed to call GetEnv: error=%d\n", __FILE__, res); |
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return JNI_ERR; |
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} |
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err = jvmti->GetPotentialCapabilities(&caps); |
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if (err != JVMTI_ERROR_NONE) { |
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printf("(GetPotentialCapabilities) unexpected error: %s (%d)\n", |
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TranslateError(err), err); |
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return JNI_ERR; |
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} |
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err = jvmti->AddCapabilities(&caps); |
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if (err != JVMTI_ERROR_NONE) { |
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printf("(AddCapabilities) unexpected error: %s (%d)\n", |
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TranslateError(err), err); |
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return JNI_ERR; |
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} |
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err = jvmti->GetCapabilities(&caps); |
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if (err != JVMTI_ERROR_NONE) { |
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printf("(GetCapabilities) unexpected error: %s (%d)\n", |
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TranslateError(err), err); |
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return JNI_ERR; |
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} |
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|
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if (!caps.can_redefine_classes) { |
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printf("Warning: RedefineClasses is not implemented\n"); |
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} |
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callbacks.NativeMethodBind = &NativeMethodBind; |
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err = jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks)); |
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if (err != JVMTI_ERROR_NONE) { |
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printf("(SetEventCallbacks) unexpected error: %s (%d)\n", |
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TranslateError(err), err); |
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return JNI_ERR; |
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} |
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err = jvmti->CreateRawMonitor("watch_ev_monitor", &watch_ev_monitor); |
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if (err != JVMTI_ERROR_NONE) { |
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printf("(CreateRawMonitor) unexpected error: %s (%d)\n", |
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TranslateError(err), err); |
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return JNI_ERR; |
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} |
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return JNI_OK; |
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} |
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128 |
|
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JNIEXPORT jint JNICALL |
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Java_nsk_jvmti_RedefineClasses_redefclass031_makeRedefinition(JNIEnv *env, |
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jclass cls, jint vrb, jclass redefCls, jbyteArray classBytes) { |
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jvmtiError err; |
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jvmtiClassDefinition classDef; |
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134 |
|
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if (jvmti == NULL) { |
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printf("JVMTI client was not properly loaded!\n"); |
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return STATUS_FAILED; |
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138 |
} |
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139 |
|
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if (!caps.can_redefine_classes) { |
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return PASSED; |
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142 |
} |
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143 |
|
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err = jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_NATIVE_METHOD_BIND, NULL); |
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if (err != JVMTI_ERROR_NONE) { |
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printf("Failed to enable JVMTI_EVENT_NATIVE_METHOD_BIND: %s (%d)\n", |
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TranslateError(err), err); |
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result = STATUS_FAILED; |
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} |
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150 |
|
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/* filling the structure jvmtiClassDefinition */ |
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classDef.klass = redefCls; |
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classDef.class_byte_count = env->GetArrayLength(classBytes); |
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classDef.class_bytes = (unsigned char *) env->GetByteArrayElements(classBytes, NULL); |
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155 |
|
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set_watch_ev(1); /* watch JVMTI events */ |
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157 |
|
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if (vrb == 1) |
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printf(">>>>>>>> Invoke RedefineClasses():\n\tnew class byte count=%d\n", |
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classDef.class_byte_count); |
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err = jvmti->RedefineClasses(1, &classDef); |
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if (err != JVMTI_ERROR_NONE) { |
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printf("TEST FAILED: the function RedefineClasses() returned error %d: %s\n", |
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err, TranslateError(err)); |
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printf("\tFor more info about this error see the JVMTI spec.\n"); |
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result = STATUS_FAILED; |
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} |
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else if (vrb == 1) |
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printf("Check #1 PASSED: RedefineClasses() is successfully done\n"); |
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170 |
|
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set_watch_ev(0); /* again ignore JVMTI events */ |
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172 |
|
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if (gen_ev) { |
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printf("TEST FAILED: %d unexpected JVMTI events were generated by the function RedefineClasses()\n", |
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gen_ev); |
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result = STATUS_FAILED; |
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} else if (vrb == 1) |
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printf("Check #2 PASSED: No unexpected JVMTI events were generated by the function RedefineClasses()\n"); |
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179 |
|
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return(result); |
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181 |
} |
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182 |
|
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183 |
JNIEXPORT void JNICALL |
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Java_nsk_jvmti_RedefineClasses_redefclass031r_nativeMethod(JNIEnv * pEnv, jclass klass) |
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{ |
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printf("redefclass031r::nativeMethod is called.\n"); |
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187 |
} |
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188 |
|
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189 |
|
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190 |
} |