perfData.cpp revision 0:a61af66fc99e
1/* 2 * Copyright 2001-2005 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 20 * CA 95054 USA or visit www.sun.com if you need additional information or 21 * have any questions. 22 * 23 */ 24 25# include "incls/_precompiled.incl" 26# include "incls/_perfData.cpp.incl" 27 28PerfDataList* PerfDataManager::_all = NULL; 29PerfDataList* PerfDataManager::_sampled = NULL; 30PerfDataList* PerfDataManager::_constants = NULL; 31 32/* 33 * The jvmstat global and subsysem jvmstat counter name spaces. The top 34 * level name spaces imply the interface stability level of the counter, 35 * which generally follows the Java package, class, and property naming 36 * conventions. The CounterNS enumeration values should be used to index 37 * into this array. 38 */ 39const char* PerfDataManager::_name_spaces[] = { 40 // top level name spaces 41 "java", // stable and supported name space 42 "com.sun", // unstable but supported name space 43 "sun", // unstable and unsupported name space 44 // subsystem name spaces 45 "java.gc", // Garbage Collection name spaces 46 "com.sun.gc", 47 "sun.gc", 48 "java.ci", // Compiler name spaces 49 "com.sun.ci", 50 "sun.ci", 51 "java.cls", // Class Loader name spaces 52 "com.sun.cls", 53 "sun.cls", 54 "java.rt", // Runtime name spaces 55 "com.sun.rt", 56 "sun.rt", 57 "java.os", // Operating System name spaces 58 "com.sun.os", 59 "sun.os", 60 "java.threads", // Threads System name spaces 61 "com.sun.threads", 62 "sun.threads", 63 "java.property", // Java Property name spaces 64 "com.sun.property", 65 "sun.property", 66 "", 67}; 68 69PerfData::PerfData(CounterNS ns, const char* name, Units u, Variability v) 70 : _name(NULL), _u(u), _v(v), _valuep(NULL), 71 _on_c_heap(false) { 72 73 const char* prefix = PerfDataManager::ns_to_string(ns); 74 75 _name = NEW_C_HEAP_ARRAY(char, strlen(name) + strlen(prefix) + 2); 76 assert(_name != NULL && strlen(name) != 0, "invalid name"); 77 78 if (ns == NULL_NS) { 79 // No prefix is added to counters with the NULL_NS namespace. 80 strcpy(_name, name); 81 // set the F_Supported flag based on the counter name prefix. 82 if (PerfDataManager::is_stable_supported(_name) || 83 PerfDataManager::is_unstable_supported(_name)) { 84 _flags = F_Supported; 85 } 86 else { 87 _flags = F_None; 88 } 89 } 90 else { 91 sprintf(_name, "%s.%s", prefix, name); 92 // set the F_Supported flag based on the given namespace. 93 if (PerfDataManager::is_stable_supported(ns) || 94 PerfDataManager::is_unstable_supported(ns)) { 95 _flags = F_Supported; 96 } 97 else { 98 _flags = F_None; 99 } 100 } 101} 102 103PerfData::~PerfData() { 104 if (_name != NULL) { 105 FREE_C_HEAP_ARRAY(char, _name); 106 } 107 if (is_on_c_heap()) { 108 FREE_C_HEAP_ARRAY(PerfDataEntry, _pdep); 109 } 110} 111 112void PerfData::create_entry(BasicType dtype, size_t dsize, size_t vlen) { 113 114 size_t dlen = vlen==0 ? 1 : vlen; 115 116 size_t namelen = strlen(name()) + 1; // include null terminator 117 size_t size = sizeof(PerfDataEntry) + namelen; 118 size_t pad_length = ((size % dsize) == 0) ? 0 : dsize - (size % dsize); 119 size += pad_length; 120 size_t data_start = size; 121 size += (dsize * dlen); 122 123 // align size to assure allocation in units of 8 bytes 124 int align = sizeof(jlong) - 1; 125 size = ((size + align) & ~align); 126 char* psmp = PerfMemory::alloc(size); 127 128 if (psmp == NULL) { 129 // out of PerfMemory memory resources. allocate on the C heap 130 // to avoid vm termination. 131 psmp = NEW_C_HEAP_ARRAY(char, size); 132 _on_c_heap = true; 133 } 134 135 // compute the addresses for the name and data 136 char* cname = psmp + sizeof(PerfDataEntry); 137 138 // data is in the last dsize*dlen bytes of the entry 139 void* valuep = (void*) (psmp + data_start); 140 141 assert(is_on_c_heap() || PerfMemory::contains(cname), "just checking"); 142 assert(is_on_c_heap() || PerfMemory::contains((char*)valuep), "just checking"); 143 144 // copy the name, including null terminator, into PerfData memory 145 strcpy(cname, name()); 146 147 148 // set the header values in PerfData memory 149 PerfDataEntry* pdep = (PerfDataEntry*)psmp; 150 pdep->entry_length = (jint)size; 151 pdep->name_offset = (jint) ((uintptr_t) cname - (uintptr_t) psmp); 152 pdep->vector_length = (jint)vlen; 153 pdep->data_type = (jbyte) type2char(dtype); 154 pdep->data_units = units(); 155 pdep->data_variability = variability(); 156 pdep->flags = (jbyte)flags(); 157 pdep->data_offset = (jint) data_start; 158 159 if (PerfTraceDataCreation) { 160 tty->print("name = %s, dtype = %d, variability = %d," 161 " units = %d, dsize = %d, vlen = %d," 162 " pad_length = %d, size = %d, on_c_heap = %s," 163 " address = " INTPTR_FORMAT "," 164 " data address = " INTPTR_FORMAT "\n", 165 cname, dtype, variability(), 166 units(), dsize, vlen, 167 pad_length, size, is_on_c_heap() ? "TRUE":"FALSE", 168 psmp, valuep); 169 } 170 171 // record the start of the entry and the location of the data field. 172 _pdep = pdep; 173 _valuep = valuep; 174 175 // mark the PerfData memory region as having been updated. 176 PerfMemory::mark_updated(); 177} 178 179PerfLong::PerfLong(CounterNS ns, const char* namep, Units u, Variability v) 180 : PerfData(ns, namep, u, v) { 181 182 create_entry(T_LONG, sizeof(jlong)); 183} 184 185int PerfLong::format(char* buffer, int length) { 186 return jio_snprintf(buffer, length,"%lld", *(jlong*)_valuep); 187} 188 189PerfLongVariant::PerfLongVariant(CounterNS ns, const char* namep, Units u, 190 Variability v, jlong* sampled) 191 : PerfLong(ns, namep, u, v), 192 _sampled(sampled), _sample_helper(NULL) { 193 194 sample(); 195} 196 197PerfLongVariant::PerfLongVariant(CounterNS ns, const char* namep, Units u, 198 Variability v, PerfLongSampleHelper* helper) 199 : PerfLong(ns, namep, u, v), 200 _sampled(NULL), _sample_helper(helper) { 201 202 sample(); 203} 204 205void PerfLongVariant::sample() { 206 207 assert(_sample_helper != NULL || _sampled != NULL, "unexpected state"); 208 209 if (_sample_helper != NULL) { 210 *(jlong*)_valuep = _sample_helper->take_sample(); 211 } 212 else if (_sampled != NULL) { 213 *(jlong*)_valuep = *_sampled; 214 } 215} 216 217PerfByteArray::PerfByteArray(CounterNS ns, const char* namep, Units u, 218 Variability v, jint length) 219 : PerfData(ns, namep, u, v), _length(length) { 220 221 create_entry(T_BYTE, sizeof(jbyte), (size_t)_length); 222} 223 224void PerfString::set_string(const char* s2) { 225 226 // copy n bytes of the string, assuring the null string is 227 // copied if s2 == NULL. 228 strncpy((char *)_valuep, s2 == NULL ? "" : s2, _length); 229 230 // assure the string is null terminated when strlen(s2) >= _length 231 ((char*)_valuep)[_length-1] = '\0'; 232} 233 234int PerfString::format(char* buffer, int length) { 235 return jio_snprintf(buffer, length, "%s", (char*)_valuep); 236} 237 238PerfStringConstant::PerfStringConstant(CounterNS ns, const char* namep, 239 const char* initial_value) 240 : PerfString(ns, namep, V_Constant, 241 initial_value == NULL ? 1 : 242 MIN2((jint)(strlen((char*)initial_value)+1), 243 (jint)(PerfMaxStringConstLength+1)), 244 initial_value) { 245 246 if (PrintMiscellaneous && Verbose) { 247 if (is_valid() && initial_value != NULL && 248 ((jint)strlen(initial_value) > (jint)PerfMaxStringConstLength)) { 249 250 warning("Truncating PerfStringConstant: name = %s," 251 " length = " INT32_FORMAT "," 252 " PerfMaxStringConstLength = " INT32_FORMAT "\n", 253 namep, 254 (jint)strlen(initial_value), 255 (jint)PerfMaxStringConstLength); 256 } 257 } 258} 259 260 261 262 263 264 265void PerfDataManager::destroy() { 266 267 if (_all == NULL) 268 // destroy already called, or initialization never happened 269 return; 270 271 for (int index = 0; index < _all->length(); index++) { 272 PerfData* p = _all->at(index); 273 delete p; 274 } 275 276 delete(_all); 277 delete(_sampled); 278 delete(_constants); 279 280 _all = NULL; 281 _sampled = NULL; 282 _constants = NULL; 283} 284 285void PerfDataManager::add_item(PerfData* p, bool sampled) { 286 287 MutexLocker ml(PerfDataManager_lock); 288 289 if (_all == NULL) { 290 _all = new PerfDataList(100); 291 } 292 293 assert(!_all->contains(p->name()), "duplicate name added"); 294 295 // add to the list of all perf data items 296 _all->append(p); 297 298 if (p->variability() == PerfData::V_Constant) { 299 if (_constants == NULL) { 300 _constants = new PerfDataList(25); 301 } 302 _constants->append(p); 303 return; 304 } 305 306 if (sampled) { 307 if (_sampled == NULL) { 308 _sampled = new PerfDataList(25); 309 } 310 _sampled->append(p); 311 } 312} 313 314PerfDataList* PerfDataManager::all() { 315 316 MutexLocker ml(PerfDataManager_lock); 317 318 if (_all == NULL) 319 return NULL; 320 321 PerfDataList* clone = _all->clone(); 322 return clone; 323} 324 325PerfDataList* PerfDataManager::sampled() { 326 327 MutexLocker ml(PerfDataManager_lock); 328 329 if (_sampled == NULL) 330 return NULL; 331 332 PerfDataList* clone = _sampled->clone(); 333 return clone; 334} 335 336PerfDataList* PerfDataManager::constants() { 337 338 MutexLocker ml(PerfDataManager_lock); 339 340 if (_constants == NULL) 341 return NULL; 342 343 PerfDataList* clone = _constants->clone(); 344 return clone; 345} 346 347char* PerfDataManager::counter_name(const char* ns, const char* name) { 348 assert(ns != NULL, "ns string required"); 349 assert(name != NULL, "name string required"); 350 351 size_t len = strlen(ns) + strlen(name) + 2; 352 char* result = NEW_RESOURCE_ARRAY(char, len); 353 sprintf(result, "%s.%s", ns, name); 354 return result; 355} 356 357char* PerfDataManager::name_space(const char* ns, const char* sub, 358 int instance) { 359 char intbuf[40]; 360 jio_snprintf(intbuf, 40, UINT32_FORMAT, instance); 361 return name_space(ns, name_space(sub, intbuf)); 362} 363 364char *PerfDataManager::name_space(const char* ns, int instance) { 365 char intbuf[40]; 366 jio_snprintf(intbuf, 40, UINT32_FORMAT, instance); 367 return name_space(ns, intbuf); 368} 369 370PerfStringConstant* PerfDataManager::create_string_constant(CounterNS ns, 371 const char* name, 372 const char* s, 373 TRAPS) { 374 375 PerfStringConstant* p = new PerfStringConstant(ns, name, s); 376 377 if (!p->is_valid()) { 378 // allocation of native resources failed. 379 delete p; 380 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); 381 } 382 383 add_item(p, false); 384 385 return p; 386} 387 388PerfLongConstant* PerfDataManager::create_long_constant(CounterNS ns, 389 const char* name, 390 PerfData::Units u, 391 jlong val, TRAPS) { 392 393 PerfLongConstant* p = new PerfLongConstant(ns, name, u, val); 394 395 if (!p->is_valid()) { 396 // allocation of native resources failed. 397 delete p; 398 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); 399 } 400 401 add_item(p, false); 402 403 return p; 404} 405 406PerfStringVariable* PerfDataManager::create_string_variable(CounterNS ns, 407 const char* name, 408 jint max_length, 409 const char* s, 410 TRAPS) { 411 412 if (max_length == 0 && s != NULL) max_length = (jint)strlen(s); 413 414 assert(max_length != 0, "PerfStringVariable with length 0"); 415 416 PerfStringVariable* p = new PerfStringVariable(ns, name, max_length, s); 417 418 if (!p->is_valid()) { 419 // allocation of native resources failed. 420 delete p; 421 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); 422 } 423 424 add_item(p, false); 425 426 return p; 427} 428 429PerfLongVariable* PerfDataManager::create_long_variable(CounterNS ns, 430 const char* name, 431 PerfData::Units u, 432 jlong ival, TRAPS) { 433 434 PerfLongVariable* p = new PerfLongVariable(ns, name, u, ival); 435 436 if (!p->is_valid()) { 437 // allocation of native resources failed. 438 delete p; 439 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); 440 } 441 442 add_item(p, false); 443 444 return p; 445} 446 447PerfLongVariable* PerfDataManager::create_long_variable(CounterNS ns, 448 const char* name, 449 PerfData::Units u, 450 jlong* sp, TRAPS) { 451 452 // Sampled counters not supported if UsePerfData is false 453 if (!UsePerfData) return NULL; 454 455 PerfLongVariable* p = new PerfLongVariable(ns, name, u, sp); 456 457 if (!p->is_valid()) { 458 // allocation of native resources failed. 459 delete p; 460 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); 461 } 462 463 add_item(p, true); 464 465 return p; 466} 467 468PerfLongVariable* PerfDataManager::create_long_variable(CounterNS ns, 469 const char* name, 470 PerfData::Units u, 471 PerfSampleHelper* sh, 472 TRAPS) { 473 474 // Sampled counters not supported if UsePerfData is false 475 if (!UsePerfData) return NULL; 476 477 PerfLongVariable* p = new PerfLongVariable(ns, name, u, sh); 478 479 if (!p->is_valid()) { 480 // allocation of native resources failed. 481 delete p; 482 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); 483 } 484 485 add_item(p, true); 486 487 return p; 488} 489 490PerfLongCounter* PerfDataManager::create_long_counter(CounterNS ns, 491 const char* name, 492 PerfData::Units u, 493 jlong ival, TRAPS) { 494 495 PerfLongCounter* p = new PerfLongCounter(ns, name, u, ival); 496 497 if (!p->is_valid()) { 498 // allocation of native resources failed. 499 delete p; 500 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); 501 } 502 503 add_item(p, false); 504 505 return p; 506} 507 508PerfLongCounter* PerfDataManager::create_long_counter(CounterNS ns, 509 const char* name, 510 PerfData::Units u, 511 jlong* sp, TRAPS) { 512 513 // Sampled counters not supported if UsePerfData is false 514 if (!UsePerfData) return NULL; 515 516 PerfLongCounter* p = new PerfLongCounter(ns, name, u, sp); 517 518 if (!p->is_valid()) { 519 // allocation of native resources failed. 520 delete p; 521 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); 522 } 523 524 add_item(p, true); 525 526 return p; 527} 528 529PerfLongCounter* PerfDataManager::create_long_counter(CounterNS ns, 530 const char* name, 531 PerfData::Units u, 532 PerfSampleHelper* sh, 533 TRAPS) { 534 535 // Sampled counters not supported if UsePerfData is false 536 if (!UsePerfData) return NULL; 537 538 PerfLongCounter* p = new PerfLongCounter(ns, name, u, sh); 539 540 if (!p->is_valid()) { 541 // allocation of native resources failed. 542 delete p; 543 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); 544 } 545 546 add_item(p, true); 547 548 return p; 549} 550 551PerfDataList::PerfDataList(int length) { 552 553 _set = new(ResourceObj::C_HEAP) PerfDataArray(length, true); 554} 555 556PerfDataList::PerfDataList(PerfDataList* p) { 557 558 _set = new(ResourceObj::C_HEAP) PerfDataArray(p->length(), true); 559 560 _set->appendAll(p->get_impl()); 561} 562 563PerfDataList::~PerfDataList() { 564 565 delete _set; 566 567} 568 569bool PerfDataList::by_name(void* name, PerfData* pd) { 570 571 if (pd == NULL) 572 return false; 573 574 return strcmp((const char*)name, pd->name()) == 0; 575} 576 577PerfData* PerfDataList::find_by_name(const char* name) { 578 579 int i = _set->find((void*)name, PerfDataList::by_name); 580 581 if (i >= 0 && i <= _set->length()) 582 return _set->at(i); 583 else 584 return NULL; 585} 586 587PerfDataList* PerfDataList::clone() { 588 589 PerfDataList* copy = new PerfDataList(this); 590 591 assert(copy != NULL, "just checking"); 592 593 return copy; 594} 595