J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions |
| 6 | * are met: |
| 7 | * |
| 8 | * - Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * |
| 11 | * - Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * |
| 15 | * - Neither the name of Sun Microsystems nor the names of its |
| 16 | * contributors may be used to endorse or promote products derived |
| 17 | * from this software without specific prior written permission. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
| 20 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| 21 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| 23 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 24 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 25 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 26 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 27 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 28 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 29 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | /* This file contains all class, method and allocation event support functions, |
| 33 | * both JVMTI and BCI events. |
| 34 | * (See hprof_monitor.c for the monitor event handlers). |
| 35 | */ |
| 36 | |
| 37 | #include "hprof.h" |
| 38 | |
| 39 | /* Private internal functions. */ |
| 40 | |
| 41 | /* Return a TraceIndex for the given thread. */ |
| 42 | static TraceIndex |
| 43 | get_current(TlsIndex tls_index, JNIEnv *env, jboolean skip_init) |
| 44 | { |
| 45 | TraceIndex trace_index; |
| 46 | |
| 47 | trace_index = tls_get_trace(tls_index, env, gdata->max_trace_depth, skip_init); |
| 48 | return trace_index; |
| 49 | } |
| 50 | |
| 51 | /* Return a ClassIndex for the given jclass, loader supplied or looked up. */ |
| 52 | static ClassIndex |
| 53 | find_cnum(JNIEnv *env, jclass klass, jobject loader) |
| 54 | { |
| 55 | LoaderIndex loader_index; |
| 56 | ClassIndex cnum; |
| 57 | char * signature; |
| 58 | |
| 59 | HPROF_ASSERT(klass!=NULL); |
| 60 | |
| 61 | /* Get the loader index */ |
| 62 | loader_index = loader_find_or_create(env, loader); |
| 63 | |
| 64 | /* Get the signature for this class */ |
| 65 | getClassSignature(klass, &signature, NULL); |
| 66 | |
| 67 | /* Find the ClassIndex for this class */ |
| 68 | cnum = class_find_or_create(signature, loader_index); |
| 69 | |
| 70 | /* Free the signature space */ |
| 71 | jvmtiDeallocate(signature); |
| 72 | |
| 73 | /* Make sure we save a global reference to this class in the table */ |
| 74 | HPROF_ASSERT(cnum!=0); |
| 75 | (void)class_new_classref(env, cnum, klass); |
| 76 | return cnum; |
| 77 | } |
| 78 | |
| 79 | /* Get the ClassIndex for the superClass of this jclass. */ |
| 80 | static ClassIndex |
| 81 | get_super(JNIEnv *env, jclass klass) |
| 82 | { |
| 83 | ClassIndex super_cnum; |
| 84 | |
| 85 | super_cnum = 0; |
| 86 | WITH_LOCAL_REFS(env, 1) { |
| 87 | jclass super_klass; |
| 88 | |
| 89 | super_klass = getSuperclass(env, klass); |
| 90 | if ( super_klass != NULL ) { |
| 91 | super_cnum = find_cnum(env, super_klass, |
| 92 | getClassLoader(super_klass)); |
| 93 | } |
| 94 | } END_WITH_LOCAL_REFS; |
| 95 | return super_cnum; |
| 96 | } |
| 97 | |
| 98 | /* Record an allocation. Could be jobject, jclass, jarray or primitive type. */ |
| 99 | static void |
| 100 | any_allocation(JNIEnv *env, SerialNumber thread_serial_num, |
| 101 | TraceIndex trace_index, jobject object) |
| 102 | { |
| 103 | SiteIndex site_index; |
| 104 | ClassIndex cnum; |
| 105 | jint size; |
| 106 | jclass klass; |
| 107 | |
| 108 | /* NOTE: Normally the getObjectClass() and getClassLoader() |
| 109 | * would require a |
| 110 | * WITH_LOCAL_REFS(env, 1) { |
| 111 | * } END_WITH_LOCAL_REFS; |
| 112 | * but for performance reasons we skip it here. |
| 113 | */ |
| 114 | |
| 115 | /* Get and tag the klass */ |
| 116 | klass = getObjectClass(env, object); |
| 117 | cnum = find_cnum(env, klass, getClassLoader(klass)); |
| 118 | site_index = site_find_or_create(cnum, trace_index); |
| 119 | tag_class(env, klass, cnum, thread_serial_num, site_index); |
| 120 | |
| 121 | /* Tag the object */ |
| 122 | size = (jint)getObjectSize(object); |
| 123 | tag_new_object(object, OBJECT_NORMAL, thread_serial_num, size, site_index); |
| 124 | } |
| 125 | |
| 126 | /* Handle a java.lang.Object.<init> object allocation. */ |
| 127 | void |
| 128 | event_object_init(JNIEnv *env, jthread thread, jobject object) |
| 129 | { |
| 130 | /* Called via BCI Tracker class */ |
| 131 | |
| 132 | /* Be very careful what is called here, watch out for recursion. */ |
| 133 | |
| 134 | jint *pstatus; |
| 135 | TraceIndex trace_index; |
| 136 | SerialNumber thread_serial_num; |
| 137 | |
| 138 | HPROF_ASSERT(env!=NULL); |
| 139 | HPROF_ASSERT(thread!=NULL); |
| 140 | HPROF_ASSERT(object!=NULL); |
| 141 | |
| 142 | /* Prevent recursion into any BCI function for this thread (pstatus). */ |
| 143 | if ( tls_get_tracker_status(env, thread, JNI_TRUE, |
| 144 | &pstatus, NULL, &thread_serial_num, &trace_index) == 0 ) { |
| 145 | (*pstatus) = 1; |
| 146 | any_allocation(env, thread_serial_num, trace_index, object); |
| 147 | (*pstatus) = 0; |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | /* Handle any newarray opcode allocation. */ |
| 152 | void |
| 153 | event_newarray(JNIEnv *env, jthread thread, jobject object) |
| 154 | { |
| 155 | /* Called via BCI Tracker class */ |
| 156 | |
| 157 | /* Be very careful what is called here, watch out for recursion. */ |
| 158 | |
| 159 | jint *pstatus; |
| 160 | TraceIndex trace_index; |
| 161 | SerialNumber thread_serial_num; |
| 162 | |
| 163 | HPROF_ASSERT(env!=NULL); |
| 164 | HPROF_ASSERT(thread!=NULL); |
| 165 | HPROF_ASSERT(object!=NULL); |
| 166 | |
| 167 | /* Prevent recursion into any BCI function for this thread (pstatus). */ |
| 168 | if ( tls_get_tracker_status(env, thread, JNI_FALSE, |
| 169 | &pstatus, NULL, &thread_serial_num, &trace_index) == 0 ) { |
| 170 | (*pstatus) = 1; |
| 171 | any_allocation(env, thread_serial_num, trace_index, object); |
| 172 | (*pstatus) = 0; |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | /* Handle tracking of a method call. */ |
| 177 | void |
| 178 | event_call(JNIEnv *env, jthread thread, ClassIndex cnum, MethodIndex mnum) |
| 179 | { |
| 180 | /* Called via BCI Tracker class */ |
| 181 | |
| 182 | /* Be very careful what is called here, watch out for recursion. */ |
| 183 | |
| 184 | TlsIndex tls_index; |
| 185 | jint *pstatus; |
| 186 | |
| 187 | HPROF_ASSERT(env!=NULL); |
| 188 | HPROF_ASSERT(thread!=NULL); |
| 189 | HPROF_ASSERT(cnum!=0 && cnum!=gdata->tracker_cnum); |
| 190 | |
| 191 | /* Prevent recursion into any BCI function for this thread (pstatus). */ |
| 192 | if ( tls_get_tracker_status(env, thread, JNI_FALSE, |
| 193 | &pstatus, &tls_index, NULL, NULL) == 0 ) { |
| 194 | jmethodID method; |
| 195 | |
| 196 | (*pstatus) = 1; |
| 197 | method = class_get_methodID(env, cnum, mnum); |
| 198 | HPROF_ASSERT(method!=NULL); |
| 199 | tls_push_method(tls_index, method); |
| 200 | (*pstatus) = 0; |
| 201 | } |
| 202 | } |
| 203 | |
| 204 | /* Handle tracking of an exception catch */ |
| 205 | void |
| 206 | event_exception_catch(JNIEnv *env, jthread thread, jmethodID method, |
| 207 | jlocation location, jobject exception) |
| 208 | { |
| 209 | /* Called via JVMTI_EVENT_EXCEPTION_CATCH callback */ |
| 210 | |
| 211 | /* Be very careful what is called here, watch out for recursion. */ |
| 212 | |
| 213 | TlsIndex tls_index; |
| 214 | jint *pstatus; |
| 215 | |
| 216 | HPROF_ASSERT(env!=NULL); |
| 217 | HPROF_ASSERT(thread!=NULL); |
| 218 | HPROF_ASSERT(method!=NULL); |
| 219 | |
| 220 | /* Prevent recursion into any BCI function for this thread (pstatus). */ |
| 221 | if ( tls_get_tracker_status(env, thread, JNI_FALSE, |
| 222 | &pstatus, &tls_index, NULL, NULL) == 0 ) { |
| 223 | (*pstatus) = 1; |
| 224 | tls_pop_exception_catch(tls_index, thread, method); |
| 225 | (*pstatus) = 0; |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | /* Handle tracking of a method return pop one (maybe more) methods. */ |
| 230 | void |
| 231 | event_return(JNIEnv *env, jthread thread, ClassIndex cnum, MethodIndex mnum) |
| 232 | { |
| 233 | /* Called via BCI Tracker class */ |
| 234 | |
| 235 | /* Be very careful what is called here, watch out for recursion. */ |
| 236 | |
| 237 | TlsIndex tls_index; |
| 238 | jint *pstatus; |
| 239 | |
| 240 | HPROF_ASSERT(env!=NULL); |
| 241 | HPROF_ASSERT(thread!=NULL); |
| 242 | HPROF_ASSERT(cnum!=0 && cnum!=gdata->tracker_cnum); |
| 243 | |
| 244 | /* Prevent recursion into any BCI function for this thread (pstatus). */ |
| 245 | if ( tls_get_tracker_status(env, thread, JNI_FALSE, |
| 246 | &pstatus, &tls_index, NULL, NULL) == 0 ) { |
| 247 | jmethodID method; |
| 248 | |
| 249 | (*pstatus) = 1; |
| 250 | method = class_get_methodID(env, cnum, mnum); |
| 251 | HPROF_ASSERT(method!=NULL); |
| 252 | tls_pop_method(tls_index, thread, method); |
| 253 | (*pstatus) = 0; |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | /* Handle a class prepare (should have been already loaded) */ |
| 258 | void |
| 259 | event_class_prepare(JNIEnv *env, jthread thread, jclass klass, jobject loader) |
| 260 | { |
| 261 | /* Called via JVMTI_EVENT_CLASS_PREPARE event */ |
| 262 | |
| 263 | ClassIndex cnum; |
| 264 | |
| 265 | HPROF_ASSERT(env!=NULL); |
| 266 | HPROF_ASSERT(thread!=NULL); |
| 267 | HPROF_ASSERT(klass!=NULL); |
| 268 | |
| 269 | /* Find the ClassIndex for this class */ |
| 270 | cnum = find_cnum(env, klass, loader); |
| 271 | class_add_status(cnum, CLASS_PREPARED); |
| 272 | |
| 273 | } |
| 274 | |
| 275 | /* Handle a class load (could have been already loaded) */ |
| 276 | void |
| 277 | event_class_load(JNIEnv *env, jthread thread, jclass klass, jobject loader) |
| 278 | { |
| 279 | /* Called via JVMTI_EVENT_CLASS_LOAD event or reset_class_load_status() */ |
| 280 | |
| 281 | ClassIndex cnum; |
| 282 | |
| 283 | HPROF_ASSERT(env!=NULL); |
| 284 | HPROF_ASSERT(klass!=NULL); |
| 285 | |
| 286 | /* Find the ClassIndex for this class */ |
| 287 | cnum = find_cnum(env, klass, loader); |
| 288 | |
| 289 | /* Always mark it as being in the load list */ |
| 290 | class_add_status(cnum, CLASS_IN_LOAD_LIST); |
| 291 | |
| 292 | /* If we are seeing this as a new loaded class, extra work */ |
| 293 | if ( ! ( class_get_status(cnum) & CLASS_LOADED ) ) { |
| 294 | TraceIndex trace_index; |
| 295 | SiteIndex site_index; |
| 296 | ClassIndex super; |
| 297 | SerialNumber class_serial_num; |
| 298 | SerialNumber trace_serial_num; |
| 299 | SerialNumber thread_serial_num; |
| 300 | ObjectIndex class_object_index; |
| 301 | char *signature; |
| 302 | |
| 303 | /* Get the TlsIndex and a TraceIndex for this location */ |
| 304 | if ( thread == NULL ) { |
| 305 | /* This should be very rare, but if this class load was simulated |
| 306 | * from hprof_init.c due to a reset of the class load status, |
| 307 | * and it originated from a pre-VM_INIT event, the jthread |
| 308 | * would be NULL, or it was a jclass created that didn't get |
| 309 | * reported to us, like an array class or a primitive class? |
| 310 | */ |
| 311 | trace_index = gdata->system_trace_index; |
| 312 | thread_serial_num = gdata->unknown_thread_serial_num; |
| 313 | } else { |
| 314 | TlsIndex tls_index; |
| 315 | |
| 316 | tls_index = tls_find_or_create(env, thread); |
| 317 | trace_index = get_current(tls_index, env, JNI_FALSE); |
| 318 | thread_serial_num = tls_get_thread_serial_number(tls_index); |
| 319 | } |
| 320 | |
| 321 | /* Get the SiteIndex for this location and a java.lang.Class object */ |
| 322 | /* Note that the target cnum, not the cnum for java.lang.Class. */ |
| 323 | site_index = site_find_or_create(cnum, trace_index); |
| 324 | |
| 325 | /* Tag this java.lang.Class object */ |
| 326 | tag_class(env, klass, cnum, thread_serial_num, site_index); |
| 327 | |
| 328 | class_add_status(cnum, CLASS_LOADED); |
| 329 | |
| 330 | class_serial_num = class_get_serial_number(cnum); |
| 331 | class_object_index = class_get_object_index(cnum); |
| 332 | trace_serial_num = trace_get_serial_number(trace_index); |
| 333 | signature = string_get(class_get_signature(cnum)); |
| 334 | |
| 335 | rawMonitorEnter(gdata->data_access_lock); { |
| 336 | io_write_class_load(class_serial_num, class_object_index, |
| 337 | trace_serial_num, signature); |
| 338 | } rawMonitorExit(gdata->data_access_lock); |
| 339 | |
| 340 | super = get_super(env, klass); |
| 341 | class_set_super(cnum, super); |
| 342 | } |
| 343 | |
| 344 | } |
| 345 | |
| 346 | /* Handle a thread start event */ |
| 347 | void |
| 348 | event_thread_start(JNIEnv *env, jthread thread) |
| 349 | { |
| 350 | /* Called via JVMTI_EVENT_THREAD_START event */ |
| 351 | |
| 352 | TlsIndex tls_index; |
| 353 | ObjectIndex object_index; |
| 354 | TraceIndex trace_index; |
| 355 | jlong tag; |
| 356 | SerialNumber thread_serial_num; |
| 357 | |
| 358 | HPROF_ASSERT(env!=NULL); |
| 359 | HPROF_ASSERT(thread!=NULL); |
| 360 | |
| 361 | tls_index = tls_find_or_create(env, thread); |
| 362 | thread_serial_num = tls_get_thread_serial_number(tls_index); |
| 363 | trace_index = get_current(tls_index, env, JNI_FALSE); |
| 364 | |
| 365 | tag = getTag(thread); |
| 366 | if ( tag == (jlong)0 ) { |
| 367 | SiteIndex site_index; |
| 368 | jint size; |
| 369 | |
| 370 | size = (jint)getObjectSize(thread); |
| 371 | site_index = site_find_or_create(gdata->thread_cnum, trace_index); |
| 372 | /* We create a new object with this thread's serial number */ |
| 373 | object_index = object_new(site_index, size, OBJECT_NORMAL, |
| 374 | thread_serial_num); |
| 375 | } else { |
| 376 | object_index = tag_extract(tag); |
| 377 | /* Normally the Thread object is created and tagged before we get |
| 378 | * here, but the thread_serial_number on this object isn't what |
| 379 | * we want. So we update it to the serial number of this thread. |
| 380 | */ |
| 381 | object_set_thread_serial_number(object_index, thread_serial_num); |
| 382 | } |
| 383 | tls_set_thread_object_index(tls_index, object_index); |
| 384 | |
| 385 | WITH_LOCAL_REFS(env, 1) { |
| 386 | jvmtiThreadInfo threadInfo; |
| 387 | jvmtiThreadGroupInfo threadGroupInfo; |
| 388 | jvmtiThreadGroupInfo parentGroupInfo; |
| 389 | |
| 390 | getThreadInfo(thread, &threadInfo); |
| 391 | getThreadGroupInfo(threadInfo.thread_group, &threadGroupInfo); |
| 392 | if ( threadGroupInfo.parent != NULL ) { |
| 393 | getThreadGroupInfo(threadGroupInfo.parent, &parentGroupInfo); |
| 394 | } else { |
| 395 | (void)memset(&parentGroupInfo, 0, sizeof(parentGroupInfo)); |
| 396 | } |
| 397 | |
| 398 | rawMonitorEnter(gdata->data_access_lock); { |
| 399 | io_write_thread_start(thread_serial_num, |
| 400 | object_index, trace_get_serial_number(trace_index), |
| 401 | threadInfo.name, threadGroupInfo.name, parentGroupInfo.name); |
| 402 | } rawMonitorExit(gdata->data_access_lock); |
| 403 | |
| 404 | jvmtiDeallocate(threadInfo.name); |
| 405 | jvmtiDeallocate(threadGroupInfo.name); |
| 406 | jvmtiDeallocate(parentGroupInfo.name); |
| 407 | |
| 408 | } END_WITH_LOCAL_REFS; |
| 409 | } |
| 410 | |
| 411 | void |
| 412 | event_thread_end(JNIEnv *env, jthread thread) |
| 413 | { |
| 414 | /* Called via JVMTI_EVENT_THREAD_END event */ |
| 415 | TlsIndex tls_index; |
| 416 | |
| 417 | HPROF_ASSERT(env!=NULL); |
| 418 | HPROF_ASSERT(thread!=NULL); |
| 419 | |
| 420 | tls_index = tls_find_or_create(env, thread); |
| 421 | rawMonitorEnter(gdata->data_access_lock); { |
| 422 | io_write_thread_end(tls_get_thread_serial_number(tls_index)); |
| 423 | } rawMonitorExit(gdata->data_access_lock); |
| 424 | tls_thread_ended(env, tls_index); |
| 425 | setThreadLocalStorage(thread, (void*)NULL); |
| 426 | } |