author | iignatyev |
Tue, 28 Aug 2018 14:37:34 -0700 | |
changeset 51551 | e409244ce72e |
parent 50260 | test/hotspot/jtreg/vmTestbase/nsk/jvmti/scenarios/multienv/MA06/ma06t001/ma06t001a.c@46c67f5e27c2 |
child 51774 | 79dc492c00ab |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2004, 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 <stdlib.h> |
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#include <string.h> |
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#include "jni_tools.h" |
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#include "agent_common.h" |
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#include "jvmti_tools.h" |
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#define PASSED 0 |
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#define STATUS_FAILED 2 |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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/* ========================================================================== */ |
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/* scaffold objects */ |
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static jlong timeout = 0; |
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/* test objects */ |
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static jclass testedClass = NULL; |
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static jint klass_byte_count = 0; |
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static unsigned char *klass_bytes = NULL; |
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static int magicIndex = 0; |
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static int ClassFileLoadHookEventFlag = NSK_FALSE; |
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const char* CLASS_NAME = "nsk/jvmti/scenarios/multienv/MA06/ma06t001a"; |
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static const jint magicNumber = 0x12345678; |
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/* ========================================================================== */ |
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/** callback functions **/ |
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static void JNICALL |
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ClassFileLoadHook(jvmtiEnv *jvmti_env, JNIEnv *jni_env, |
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jclass class_being_redefined, jobject loader, |
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const char* name, jobject protection_domain, |
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jint class_data_len, const unsigned char* class_data, |
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jint *new_class_data_len, unsigned char** new_class_data) { |
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jint i; |
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if (name != NULL && (strcmp(name, CLASS_NAME) == 0)) { |
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ClassFileLoadHookEventFlag = NSK_TRUE; |
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NSK_DISPLAY0("ClassFileLoadHook event\n"); |
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if (class_being_redefined == NULL) { |
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/* sent by class load */ |
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if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(Allocate, |
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jvmti_env, class_data_len, &klass_bytes))) |
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nsk_jvmti_setFailStatus(); |
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else { |
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memcpy(klass_bytes, class_data, class_data_len); |
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klass_byte_count = class_data_len; |
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for (i = 0; i < klass_byte_count - 3; i++) { |
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if (((jint)klass_bytes[i+3] | |
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((jint)klass_bytes[i+2] << 8) | |
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((jint)klass_bytes[i+1] << 16) | |
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((jint)klass_bytes[i] << 24)) == magicNumber) { |
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magicIndex = i; |
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break; |
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} |
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} |
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if (klass_byte_count == 0) { |
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NSK_COMPLAIN0("Cannot find magic number\n"); |
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nsk_jvmti_setFailStatus(); |
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} |
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} |
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} |
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} |
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} |
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/* ========================================================================== */ |
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static int prepare(jvmtiEnv* jvmti, JNIEnv* jni) { |
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NSK_DISPLAY1("Find class: %s\n", CLASS_NAME); |
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if (!NSK_JNI_VERIFY(jni, (testedClass = |
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NSK_CPP_STUB2(FindClass, jni, CLASS_NAME)) != NULL)) |
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return NSK_FALSE; |
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if (!NSK_JNI_VERIFY(jni, (testedClass = (jclass) |
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NSK_CPP_STUB2(NewGlobalRef, jni, testedClass)) != NULL)) |
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return NSK_FALSE; |
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return NSK_TRUE; |
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} |
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/* ========================================================================== */ |
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static int redefine(jvmtiEnv* jvmti, jint value) { |
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jvmtiClassDefinition class_def; |
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if (!NSK_VERIFY(klass_byte_count != 0 && klass_bytes != NULL)) |
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return NSK_FALSE; |
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if (!NSK_VERIFY(magicIndex != 0)) |
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return NSK_FALSE; |
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NSK_DISPLAY1("Redefining with %d\n", value); |
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122 |
|
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123 |
klass_bytes[magicIndex] = 0; |
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124 |
klass_bytes[magicIndex+1] = 0; |
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125 |
klass_bytes[magicIndex+2] = 0; |
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126 |
klass_bytes[magicIndex+3] = (jbyte)value; |
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127 |
|
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128 |
class_def.klass = testedClass; |
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129 |
class_def.class_byte_count = klass_byte_count; |
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130 |
class_def.class_bytes = klass_bytes; |
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131 |
if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(RedefineClasses, jvmti, 1, &class_def))) |
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132 |
return NSK_FALSE; |
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|
133 |
|
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134 |
return NSK_TRUE; |
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|
135 |
} |
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|
136 |
|
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137 |
/* ========================================================================== */ |
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138 |
|
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|
139 |
/** Agent algorithm. */ |
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140 |
static void JNICALL |
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141 |
agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) { |
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|
142 |
|
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143 |
if (!nsk_jvmti_waitForSync(timeout)) |
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144 |
return; |
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|
145 |
|
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146 |
if (!NSK_VERIFY(ClassFileLoadHookEventFlag)) { |
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147 |
NSK_COMPLAIN0("Missing initial ClassFileLoadHook event\n"); |
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148 |
nsk_jvmti_setFailStatus(); |
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149 |
return; |
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150 |
} |
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|
151 |
|
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152 |
ClassFileLoadHookEventFlag = NSK_FALSE; |
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|
153 |
|
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154 |
if (!prepare(jvmti, jni)) { |
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|
155 |
nsk_jvmti_setFailStatus(); |
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|
156 |
return; |
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|
157 |
} |
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|
158 |
|
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|
159 |
/* resume debugee and wait for sync */ |
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160 |
if (!nsk_jvmti_resumeSync()) |
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|
161 |
return; |
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|
162 |
if (!nsk_jvmti_waitForSync(timeout)) |
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|
163 |
return; |
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|
164 |
|
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|
165 |
if (!NSK_VERIFY(ClassFileLoadHookEventFlag)) { |
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|
166 |
NSK_COMPLAIN0("Missing ClassFileLoadHook event #1\n"); |
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|
167 |
nsk_jvmti_setFailStatus(); |
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168 |
} |
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|
169 |
|
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170 |
ClassFileLoadHookEventFlag = NSK_FALSE; |
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|
171 |
|
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172 |
/* resume debugee and wait for sync */ |
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173 |
if (!nsk_jvmti_resumeSync()) |
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|
174 |
return; |
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|
175 |
if (!nsk_jvmti_waitForSync(timeout)) |
46c67f5e27c2
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|
176 |
return; |
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|
177 |
|
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|
178 |
if (!redefine(jvmti, 2)) |
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|
179 |
nsk_jvmti_setFailStatus(); |
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|
180 |
|
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|
181 |
if (!NSK_VERIFY(ClassFileLoadHookEventFlag)) { |
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182 |
NSK_COMPLAIN0("Missing ClassFileLoadHook event #3\n"); |
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183 |
nsk_jvmti_setFailStatus(); |
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|
184 |
} |
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|
185 |
|
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|
186 |
if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode, |
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187 |
jvmti, JVMTI_DISABLE, JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, NULL))) |
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188 |
nsk_jvmti_setFailStatus(); |
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|
189 |
|
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190 |
NSK_TRACE(NSK_CPP_STUB2(DeleteGlobalRef, jni, testedClass)); |
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|
191 |
|
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|
192 |
if (!nsk_jvmti_resumeSync()) |
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|
193 |
return; |
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|
194 |
} |
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|
195 |
|
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|
196 |
/* ========================================================================== */ |
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|
197 |
|
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|
198 |
/** Agent library initialization. */ |
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|
199 |
#ifdef STATIC_BUILD |
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|
200 |
JNIEXPORT jint JNICALL Agent_OnLoad_ma06t001a(JavaVM *jvm, char *options, void *reserved) { |
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|
201 |
return Agent_Initialize(jvm, options, reserved); |
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|
202 |
} |
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|
203 |
JNIEXPORT jint JNICALL Agent_OnAttach_ma06t001a(JavaVM *jvm, char *options, void *reserved) { |
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204 |
return Agent_Initialize(jvm, options, reserved); |
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|
205 |
} |
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|
206 |
JNIEXPORT jint JNI_OnLoad_ma06t001a(JavaVM *jvm, char *options, void *reserved) { |
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|
207 |
return JNI_VERSION_1_8; |
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|
208 |
} |
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|
209 |
#endif |
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210 |
jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { |
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|
211 |
jvmtiEnv* jvmti = NULL; |
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|
212 |
jvmtiEventCallbacks callbacks; |
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213 |
jvmtiCapabilities caps; |
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|
214 |
|
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|
215 |
NSK_DISPLAY0("Agent_OnLoad\n"); |
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|
216 |
|
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|
217 |
if (!NSK_VERIFY(nsk_jvmti_parseOptions(options))) |
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|
218 |
return JNI_ERR; |
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|
219 |
|
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|
220 |
timeout = nsk_jvmti_getWaitTime() * 60 * 1000; |
46c67f5e27c2
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|
221 |
|
46c67f5e27c2
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|
222 |
if (!NSK_VERIFY((jvmti = |
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223 |
nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL)) |
46c67f5e27c2
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|
224 |
return JNI_ERR; |
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|
225 |
|
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|
226 |
memset(&caps, 0, sizeof(caps)); |
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|
227 |
caps.can_redefine_classes = 1; |
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|
228 |
if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(AddCapabilities, jvmti, &caps))) |
46c67f5e27c2
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|
229 |
return JNI_ERR; |
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|
230 |
|
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|
231 |
if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL))) |
46c67f5e27c2
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|
232 |
return JNI_ERR; |
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|
233 |
|
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|
234 |
memset(&callbacks, 0, sizeof(callbacks)); |
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|
235 |
callbacks.ClassFileLoadHook = &ClassFileLoadHook; |
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|
236 |
if (!NSK_VERIFY(nsk_jvmti_init_MA(&callbacks))) |
46c67f5e27c2
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|
237 |
return JNI_ERR; |
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|
238 |
|
46c67f5e27c2
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|
239 |
if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode, |
46c67f5e27c2
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|
240 |
jvmti, JVMTI_ENABLE, JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, NULL))) |
46c67f5e27c2
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|
241 |
return JNI_ERR; |
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|
242 |
|
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return JNI_OK; |
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} |
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|
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/* ========================================================================== */ |
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|
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#ifdef __cplusplus |
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} |
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#endif |