1 /* 2 * Copyright (c) 2004, 2018, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 #include <string.h> 25 #include "jvmti.h" 26 #include "agent_common.h" 27 #include "jni_tools.h" 28 #include "jvmti_tools.h" 29 30 extern "C" { 31 32 /* ============================================================================= */ 33 34 static jlong timeout = 0; 35 36 static long objCounter = 0; 37 static int userData = 0; 38 static jvmtiEnv* st_jvmti = NULL; 39 40 /* ============================================================================= */ 41 42 /* ============================================================================= */ 43 44 45 /* jvmtiHeapRootCallback */ 46 jvmtiIterationControl JNICALL 47 heapRootCallback(jvmtiHeapRootKind root_kind, 48 jlong class_tag, 49 jlong size, 50 jlong* tag_ptr, 51 void* user_data) { 52 53 jrawMonitorID monitor_ptr = NULL; 54 55 *tag_ptr = (jlong)++objCounter; 56 57 if (!NSK_JVMTI_VERIFY(st_jvmti->CreateRawMonitor("heapRootMonitor", &monitor_ptr))) { 58 nsk_jvmti_setFailStatus(); 59 return JVMTI_ITERATION_ABORT; 60 } 61 62 if (!NSK_JVMTI_VERIFY(st_jvmti->RawMonitorEnter(monitor_ptr))) { 63 nsk_jvmti_setFailStatus(); 64 return JVMTI_ITERATION_ABORT; 65 } 66 67 /* Enter second time */ 68 if (!NSK_JVMTI_VERIFY(st_jvmti->RawMonitorEnter(monitor_ptr))) { 69 nsk_jvmti_setFailStatus(); 70 return JVMTI_ITERATION_ABORT; 71 } 72 73 if (!NSK_JVMTI_VERIFY(st_jvmti->RawMonitorWait(monitor_ptr, (jlong)1))) { 74 nsk_jvmti_setFailStatus(); 75 } 76 77 if (!NSK_JVMTI_VERIFY(st_jvmti->RawMonitorNotify(monitor_ptr))) { 78 nsk_jvmti_setFailStatus(); 79 } 80 81 if (!NSK_JVMTI_VERIFY(st_jvmti->RawMonitorNotifyAll(monitor_ptr))) { 82 nsk_jvmti_setFailStatus(); 83 } 84 85 if (!NSK_JVMTI_VERIFY(st_jvmti->RawMonitorExit(monitor_ptr))) { 86 nsk_jvmti_setFailStatus(); 87 return JVMTI_ITERATION_ABORT; 88 } 89 90 /* Exit second time */ 91 if (!NSK_JVMTI_VERIFY(st_jvmti->RawMonitorExit(monitor_ptr))) { 92 nsk_jvmti_setFailStatus(); 93 return JVMTI_ITERATION_ABORT; 94 } 95 96 if (!NSK_JVMTI_VERIFY(st_jvmti->DestroyRawMonitor(monitor_ptr))) { 97 nsk_jvmti_setFailStatus(); 98 } 99 /* 100 NSK_DISPLAY1("heapRootCallback: %d\n", objCounter); 101 */ 102 return JVMTI_ITERATION_CONTINUE; 103 } 104 105 /* jvmtiStackReferenceCallback */ 106 jvmtiIterationControl JNICALL 107 stackReferenceCallback(jvmtiHeapRootKind root_kind, 108 jlong class_tag, 109 jlong size, 110 jlong* tag_ptr, 111 jlong thread_tag, 112 jint depth, 113 jmethodID method, 114 jint slot, 115 void* user_data) { 116 117 jrawMonitorID monitor_ptr = NULL; 118 119 *tag_ptr = (jlong)++objCounter; 120 121 if (!NSK_JVMTI_VERIFY(st_jvmti->CreateRawMonitor("stackRefMonitor", &monitor_ptr))) { 122 nsk_jvmti_setFailStatus(); 123 return JVMTI_ITERATION_ABORT; 124 } 125 126 if (!NSK_JVMTI_VERIFY(st_jvmti->RawMonitorEnter(monitor_ptr))) { 127 nsk_jvmti_setFailStatus(); 128 return JVMTI_ITERATION_ABORT; 129 } 130 131 /* Enter second time */ 132 if (!NSK_JVMTI_VERIFY(st_jvmti->RawMonitorEnter(monitor_ptr))) { 133 nsk_jvmti_setFailStatus(); 134 return JVMTI_ITERATION_ABORT; 135 } 136 137 if (!NSK_JVMTI_VERIFY(st_jvmti->RawMonitorWait(monitor_ptr, (jlong)1))) { 138 nsk_jvmti_setFailStatus(); 139 } 140 141 if (!NSK_JVMTI_VERIFY(st_jvmti->RawMonitorNotify(monitor_ptr))) { 142 nsk_jvmti_setFailStatus(); 143 } 144 145 if (!NSK_JVMTI_VERIFY(st_jvmti->RawMonitorNotifyAll(monitor_ptr))) { 146 nsk_jvmti_setFailStatus(); 147 } 148 149 if (!NSK_JVMTI_VERIFY(st_jvmti->RawMonitorExit(monitor_ptr))) { 150 nsk_jvmti_setFailStatus(); 151 return JVMTI_ITERATION_ABORT; 152 } 153 154 /* Exit second time */ 155 if (!NSK_JVMTI_VERIFY(st_jvmti->RawMonitorExit(monitor_ptr))) { 156 nsk_jvmti_setFailStatus(); 157 return JVMTI_ITERATION_ABORT; 158 } 159 160 if (!NSK_JVMTI_VERIFY(st_jvmti->DestroyRawMonitor(monitor_ptr))) { 161 nsk_jvmti_setFailStatus(); 162 } 163 /* 164 NSK_DISPLAY1("stackRefenceCallback: %d\n", objCounter); 165 */ 166 return JVMTI_ITERATION_CONTINUE; 167 } 168 169 170 /* jvmtiObjectReferenceCallback */ 171 jvmtiIterationControl JNICALL 172 objectReferenceCallback(jvmtiObjectReferenceKind reference_kind, 173 jlong class_tag, 174 jlong size, 175 jlong* tag_ptr, 176 jlong referrer_tag, 177 jint referrer_index, 178 void* user_data) { 179 180 jrawMonitorID monitor_ptr = NULL; 181 182 *tag_ptr = (jlong)++objCounter; 183 184 if (!NSK_JVMTI_VERIFY(st_jvmti->CreateRawMonitor("objRefMonitor", &monitor_ptr))) { 185 nsk_jvmti_setFailStatus(); 186 return JVMTI_ITERATION_ABORT; 187 } 188 189 if (!NSK_JVMTI_VERIFY(st_jvmti->RawMonitorEnter(monitor_ptr))) { 190 nsk_jvmti_setFailStatus(); 191 return JVMTI_ITERATION_ABORT; 192 } 193 194 /* Enter second time */ 195 if (!NSK_JVMTI_VERIFY(st_jvmti->RawMonitorEnter(monitor_ptr))) { 196 nsk_jvmti_setFailStatus(); 197 return JVMTI_ITERATION_ABORT; 198 } 199 200 if (!NSK_JVMTI_VERIFY(st_jvmti->RawMonitorWait(monitor_ptr, (jlong)1))) { 201 nsk_jvmti_setFailStatus(); 202 } 203 204 if (!NSK_JVMTI_VERIFY(st_jvmti->RawMonitorNotify(monitor_ptr))) { 205 nsk_jvmti_setFailStatus(); 206 } 207 208 if (!NSK_JVMTI_VERIFY(st_jvmti->RawMonitorNotifyAll(monitor_ptr))) { 209 nsk_jvmti_setFailStatus(); 210 } 211 212 if (!NSK_JVMTI_VERIFY(st_jvmti->RawMonitorExit(monitor_ptr))) { 213 nsk_jvmti_setFailStatus(); 214 return JVMTI_ITERATION_ABORT; 215 } 216 217 /* Exit second time */ 218 if (!NSK_JVMTI_VERIFY(st_jvmti->RawMonitorExit(monitor_ptr))) { 219 nsk_jvmti_setFailStatus(); 220 return JVMTI_ITERATION_ABORT; 221 } 222 223 if (!NSK_JVMTI_VERIFY(st_jvmti->DestroyRawMonitor(monitor_ptr))) { 224 nsk_jvmti_setFailStatus(); 225 } 226 227 NSK_DISPLAY1("objectRefenceCallback: %d\n", objCounter); 228 return JVMTI_ITERATION_ABORT; 229 } 230 231 /* ============================================================================= */ 232 233 /** Agent algorithm. */ 234 static void JNICALL 235 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) { 236 237 NSK_DISPLAY0("Wait for debugee start\n"); 238 if (!NSK_VERIFY(nsk_jvmti_waitForSync(timeout))) 239 return; 240 241 { 242 do { 243 NSK_DISPLAY0("Calling IterateOverReachableObjects\n"); 244 { 245 if (!NSK_JVMTI_VERIFY( 246 jvmti->IterateOverReachableObjects(heapRootCallback, 247 stackReferenceCallback, 248 objectReferenceCallback, 249 &userData))) { 250 nsk_jvmti_setFailStatus(); 251 break; 252 } 253 } 254 255 if (objCounter == 0) { 256 NSK_COMPLAIN0("IterateOverReachableObjects call had not visited any object\n"); 257 nsk_jvmti_setFailStatus(); 258 break; 259 } else { 260 NSK_DISPLAY1("Number of objects the IterateOverReachableObjects visited: %d\n", objCounter); 261 } 262 263 } while (0); 264 } 265 266 NSK_DISPLAY0("Let debugee to finish\n"); 267 if (!NSK_VERIFY(nsk_jvmti_resumeSync())) 268 return; 269 } 270 271 /* ============================================================================= */ 272 273 /* ============================================================================= */ 274 275 /** Agent library initialization. */ 276 #ifdef STATIC_BUILD 277 JNIEXPORT jint JNICALL Agent_OnLoad_iterreachobj003(JavaVM *jvm, char *options, void *reserved) { 278 return Agent_Initialize(jvm, options, reserved); 279 } 280 JNIEXPORT jint JNICALL Agent_OnAttach_iterreachobj003(JavaVM *jvm, char *options, void *reserved) { 281 return Agent_Initialize(jvm, options, reserved); 282 } 283 JNIEXPORT jint JNI_OnLoad_iterreachobj003(JavaVM *jvm, char *options, void *reserved) { 284 return JNI_VERSION_1_8; 285 } 286 #endif 287 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { 288 jvmtiEnv* jvmti = NULL; 289 290 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options))) 291 return JNI_ERR; 292 293 timeout = nsk_jvmti_getWaitTime() * 60 * 1000; 294 295 if (!NSK_VERIFY((jvmti = 296 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL)) 297 return JNI_ERR; 298 299 /* save pointer to environment to use it in callbacks */ 300 st_jvmti = jvmti; 301 302 { 303 jvmtiCapabilities caps; 304 305 memset(&caps, 0, sizeof(caps)); 306 caps.can_tag_objects = 1; 307 if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&caps))) { 308 return JNI_ERR; 309 } 310 } 311 312 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL))) 313 return JNI_ERR; 314 315 return JNI_OK; 316 } 317 318 /* ============================================================================= */ 319 320 }