1 /* 2 * Copyright (c) 1997, 2016, 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 25 #include "precompiled.hpp" 26 #include "compiler/compileLog.hpp" 27 #include "gc/shared/gcId.hpp" 28 #include "gc/shared/gcId.hpp" 29 #include "oops/oop.inline.hpp" 30 #include "runtime/arguments.hpp" 31 #include "runtime/os.hpp" 32 #include "runtime/vm_version.hpp" 33 #include "utilities/defaultStream.hpp" 34 #include "utilities/macros.hpp" 35 #include "utilities/ostream.hpp" 36 #include "utilities/top.hpp" 37 #include "utilities/xmlstream.hpp" 38 39 extern "C" void jio_print(const char* s); // Declarationtion of jvm method 40 41 outputStream::outputStream(int width) { 42 _width = width; 43 _position = 0; 44 _newlines = 0; 45 _precount = 0; 46 _indentation = 0; 47 } 48 49 outputStream::outputStream(int width, bool has_time_stamps) { 50 _width = width; 51 _position = 0; 52 _newlines = 0; 53 _precount = 0; 54 _indentation = 0; 55 if (has_time_stamps) _stamp.update(); 56 } 57 58 void outputStream::update_position(const char* s, size_t len) { 59 for (size_t i = 0; i < len; i++) { 60 char ch = s[i]; 61 if (ch == '\n') { 62 _newlines += 1; 63 _precount += _position + 1; 64 _position = 0; 65 } else if (ch == '\t') { 66 int tw = 8 - (_position & 7); 67 _position += tw; 68 _precount -= tw-1; // invariant: _precount + _position == total count 69 } else { 70 _position += 1; 71 } 72 } 73 } 74 75 // Execute a vsprintf, using the given buffer if necessary. 76 // Return a pointer to the formatted string. 77 const char* outputStream::do_vsnprintf(char* buffer, size_t buflen, 78 const char* format, va_list ap, 79 bool add_cr, 80 size_t& result_len) { 81 assert(buflen >= 2, "buffer too small"); 82 83 const char* result; 84 if (add_cr) buflen--; 85 if (!strchr(format, '%')) { 86 // constant format string 87 result = format; 88 result_len = strlen(result); 89 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate 90 } else if (format[0] == '%' && format[1] == 's' && format[2] == '\0') { 91 // trivial copy-through format string 92 result = va_arg(ap, const char*); 93 result_len = strlen(result); 94 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate 95 } else { 96 // Handle truncation: 97 // posix: upon truncation, vsnprintf returns number of bytes which 98 // would have been written (excluding terminating zero) had the buffer 99 // been large enough 100 // windows: upon truncation, vsnprintf returns -1 101 const int written = vsnprintf(buffer, buflen, format, ap); 102 result = buffer; 103 if (written < (int) buflen && written >= 0) { 104 result_len = written; 105 } else { 106 DEBUG_ONLY(warning("increase O_BUFLEN in ostream.hpp -- output truncated");) 107 result_len = buflen - 1; 108 buffer[result_len] = 0; 109 } 110 } 111 if (add_cr) { 112 if (result != buffer) { 113 memcpy(buffer, result, result_len); 114 result = buffer; 115 } 116 buffer[result_len++] = '\n'; 117 buffer[result_len] = 0; 118 } 119 return result; 120 } 121 122 void outputStream::print(const char* format, ...) { 123 char buffer[O_BUFLEN]; 124 va_list ap; 125 va_start(ap, format); 126 size_t len; 127 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, false, len); 128 write(str, len); 129 va_end(ap); 130 } 131 132 void outputStream::print_cr(const char* format, ...) { 133 char buffer[O_BUFLEN]; 134 va_list ap; 135 va_start(ap, format); 136 size_t len; 137 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, true, len); 138 write(str, len); 139 va_end(ap); 140 } 141 142 void outputStream::vprint(const char *format, va_list argptr) { 143 char buffer[O_BUFLEN]; 144 size_t len; 145 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, false, len); 146 write(str, len); 147 } 148 149 void outputStream::vprint_cr(const char* format, va_list argptr) { 150 char buffer[O_BUFLEN]; 151 size_t len; 152 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, true, len); 153 write(str, len); 154 } 155 156 void outputStream::fill_to(int col) { 157 int need_fill = col - position(); 158 sp(need_fill); 159 } 160 161 void outputStream::move_to(int col, int slop, int min_space) { 162 if (position() >= col + slop) 163 cr(); 164 int need_fill = col - position(); 165 if (need_fill < min_space) 166 need_fill = min_space; 167 sp(need_fill); 168 } 169 170 void outputStream::put(char ch) { 171 assert(ch != 0, "please fix call site"); 172 char buf[] = { ch, '\0' }; 173 write(buf, 1); 174 } 175 176 #define SP_USE_TABS false 177 178 void outputStream::sp(int count) { 179 if (count < 0) return; 180 if (SP_USE_TABS && count >= 8) { 181 int target = position() + count; 182 while (count >= 8) { 183 this->write("\t", 1); 184 count -= 8; 185 } 186 count = target - position(); 187 } 188 while (count > 0) { 189 int nw = (count > 8) ? 8 : count; 190 this->write(" ", nw); 191 count -= nw; 192 } 193 } 194 195 void outputStream::cr() { 196 this->write("\n", 1); 197 } 198 199 void outputStream::stamp() { 200 if (! _stamp.is_updated()) { 201 _stamp.update(); // start at 0 on first call to stamp() 202 } 203 204 // outputStream::stamp() may get called by ostream_abort(), use snprintf 205 // to avoid allocating large stack buffer in print(). 206 char buf[40]; 207 jio_snprintf(buf, sizeof(buf), "%.3f", _stamp.seconds()); 208 print_raw(buf); 209 } 210 211 void outputStream::stamp(bool guard, 212 const char* prefix, 213 const char* suffix) { 214 if (!guard) { 215 return; 216 } 217 print_raw(prefix); 218 stamp(); 219 print_raw(suffix); 220 } 221 222 void outputStream::date_stamp(bool guard, 223 const char* prefix, 224 const char* suffix) { 225 if (!guard) { 226 return; 227 } 228 print_raw(prefix); 229 static const char error_time[] = "yyyy-mm-ddThh:mm:ss.mmm+zzzz"; 230 static const int buffer_length = 32; 231 char buffer[buffer_length]; 232 const char* iso8601_result = os::iso8601_time(buffer, buffer_length); 233 if (iso8601_result != NULL) { 234 print_raw(buffer); 235 } else { 236 print_raw(error_time); 237 } 238 print_raw(suffix); 239 return; 240 } 241 242 outputStream& outputStream::indent() { 243 while (_position < _indentation) sp(); 244 return *this; 245 } 246 247 void outputStream::print_jlong(jlong value) { 248 print(JLONG_FORMAT, value); 249 } 250 251 void outputStream::print_julong(julong value) { 252 print(JULONG_FORMAT, value); 253 } 254 255 /** 256 * This prints out hex data in a 'windbg' or 'xxd' form, where each line is: 257 * <hex-address>: 8 * <hex-halfword> <ascii translation (optional)> 258 * example: 259 * 0000000: 7f44 4f46 0102 0102 0000 0000 0000 0000 .DOF............ 260 * 0000010: 0000 0000 0000 0040 0000 0020 0000 0005 .......@... .... 261 * 0000020: 0000 0000 0000 0040 0000 0000 0000 015d .......@.......] 262 * ... 263 * 264 * indent is applied to each line. Ends with a CR. 265 */ 266 void outputStream::print_data(void* data, size_t len, bool with_ascii) { 267 size_t limit = (len + 16) / 16 * 16; 268 for (size_t i = 0; i < limit; ++i) { 269 if (i % 16 == 0) { 270 indent().print(INTPTR_FORMAT_W(07) ":", i); 271 } 272 if (i % 2 == 0) { 273 print(" "); 274 } 275 if (i < len) { 276 print("%02x", ((unsigned char*)data)[i]); 277 } else { 278 print(" "); 279 } 280 if ((i + 1) % 16 == 0) { 281 if (with_ascii) { 282 print(" "); 283 for (size_t j = 0; j < 16; ++j) { 284 size_t idx = i + j - 15; 285 if (idx < len) { 286 char c = ((char*)data)[idx]; 287 print("%c", c >= 32 && c <= 126 ? c : '.'); 288 } 289 } 290 } 291 cr(); 292 } 293 } 294 } 295 296 stringStream::stringStream(size_t initial_size) : outputStream() { 297 buffer_length = initial_size; 298 buffer = NEW_RESOURCE_ARRAY(char, buffer_length); 299 buffer_pos = 0; 300 buffer_fixed = false; 301 DEBUG_ONLY(rm = Thread::current()->current_resource_mark();) 302 } 303 304 // useful for output to fixed chunks of memory, such as performance counters 305 stringStream::stringStream(char* fixed_buffer, size_t fixed_buffer_size) : outputStream() { 306 buffer_length = fixed_buffer_size; 307 buffer = fixed_buffer; 308 buffer_pos = 0; 309 buffer_fixed = true; 310 } 311 312 void stringStream::write(const char* s, size_t len) { 313 size_t write_len = len; // number of non-null bytes to write 314 size_t end = buffer_pos + len + 1; // position after write and final '\0' 315 if (end > buffer_length) { 316 if (buffer_fixed) { 317 // if buffer cannot resize, silently truncate 318 end = buffer_length; 319 write_len = end - buffer_pos - 1; // leave room for the final '\0' 320 } else { 321 // For small overruns, double the buffer. For larger ones, 322 // increase to the requested size. 323 if (end < buffer_length * 2) { 324 end = buffer_length * 2; 325 } 326 char* oldbuf = buffer; 327 assert(rm == NULL || Thread::current()->current_resource_mark() == rm, 328 "stringStream is re-allocated with a different ResourceMark"); 329 buffer = NEW_RESOURCE_ARRAY(char, end); 330 if (buffer_pos > 0) { 331 memcpy(buffer, oldbuf, buffer_pos); 332 } 333 buffer_length = end; 334 } 335 } 336 // invariant: buffer is always null-terminated 337 guarantee(buffer_pos + write_len + 1 <= buffer_length, "stringStream oob"); 338 if (write_len > 0) { 339 buffer[buffer_pos + write_len] = 0; 340 memcpy(buffer + buffer_pos, s, write_len); 341 buffer_pos += write_len; 342 } 343 344 // Note that the following does not depend on write_len. 345 // This means that position and count get updated 346 // even when overflow occurs. 347 update_position(s, len); 348 } 349 350 char* stringStream::as_string() { 351 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos + 1); 352 strncpy(copy, buffer, buffer_pos); 353 copy[buffer_pos] = 0; // terminating null 354 return copy; 355 } 356 357 stringStream::~stringStream() {} 358 359 xmlStream* xtty; 360 outputStream* tty; 361 CDS_ONLY(fileStream* classlist_file;) // Only dump the classes that can be stored into the CDS archive 362 extern Mutex* tty_lock; 363 364 #define EXTRACHARLEN 32 365 #define CURRENTAPPX ".current" 366 // convert YYYY-MM-DD HH:MM:SS to YYYY-MM-DD_HH-MM-SS 367 char* get_datetime_string(char *buf, size_t len) { 368 os::local_time_string(buf, len); 369 int i = (int)strlen(buf); 370 while (i-- >= 0) { 371 if (buf[i] == ' ') buf[i] = '_'; 372 else if (buf[i] == ':') buf[i] = '-'; 373 } 374 return buf; 375 } 376 377 static const char* make_log_name_internal(const char* log_name, const char* force_directory, 378 int pid, const char* tms) { 379 const char* basename = log_name; 380 char file_sep = os::file_separator()[0]; 381 const char* cp; 382 char pid_text[32]; 383 384 for (cp = log_name; *cp != '\0'; cp++) { 385 if (*cp == '/' || *cp == file_sep) { 386 basename = cp + 1; 387 } 388 } 389 const char* nametail = log_name; 390 // Compute buffer length 391 size_t buffer_length; 392 if (force_directory != NULL) { 393 buffer_length = strlen(force_directory) + strlen(os::file_separator()) + 394 strlen(basename) + 1; 395 } else { 396 buffer_length = strlen(log_name) + 1; 397 } 398 399 const char* pts = strstr(basename, "%p"); 400 int pid_pos = (pts == NULL) ? -1 : (pts - nametail); 401 402 if (pid_pos >= 0) { 403 jio_snprintf(pid_text, sizeof(pid_text), "pid%u", pid); 404 buffer_length += strlen(pid_text); 405 } 406 407 pts = strstr(basename, "%t"); 408 int tms_pos = (pts == NULL) ? -1 : (pts - nametail); 409 if (tms_pos >= 0) { 410 buffer_length += strlen(tms); 411 } 412 413 // File name is too long. 414 if (buffer_length > JVM_MAXPATHLEN) { 415 return NULL; 416 } 417 418 // Create big enough buffer. 419 char *buf = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal); 420 421 strcpy(buf, ""); 422 if (force_directory != NULL) { 423 strcat(buf, force_directory); 424 strcat(buf, os::file_separator()); 425 nametail = basename; // completely skip directory prefix 426 } 427 428 // who is first, %p or %t? 429 int first = -1, second = -1; 430 const char *p1st = NULL; 431 const char *p2nd = NULL; 432 433 if (pid_pos >= 0 && tms_pos >= 0) { 434 // contains both %p and %t 435 if (pid_pos < tms_pos) { 436 // case foo%pbar%tmonkey.log 437 first = pid_pos; 438 p1st = pid_text; 439 second = tms_pos; 440 p2nd = tms; 441 } else { 442 // case foo%tbar%pmonkey.log 443 first = tms_pos; 444 p1st = tms; 445 second = pid_pos; 446 p2nd = pid_text; 447 } 448 } else if (pid_pos >= 0) { 449 // contains %p only 450 first = pid_pos; 451 p1st = pid_text; 452 } else if (tms_pos >= 0) { 453 // contains %t only 454 first = tms_pos; 455 p1st = tms; 456 } 457 458 int buf_pos = (int)strlen(buf); 459 const char* tail = nametail; 460 461 if (first >= 0) { 462 tail = nametail + first + 2; 463 strncpy(&buf[buf_pos], nametail, first); 464 strcpy(&buf[buf_pos + first], p1st); 465 buf_pos = (int)strlen(buf); 466 if (second >= 0) { 467 strncpy(&buf[buf_pos], tail, second - first - 2); 468 strcpy(&buf[buf_pos + second - first - 2], p2nd); 469 tail = nametail + second + 2; 470 } 471 } 472 strcat(buf, tail); // append rest of name, or all of name 473 return buf; 474 } 475 476 // log_name comes from -XX:LogFile=log_name or 477 // -XX:DumpLoadedClassList=<file_name> 478 // in log_name, %p => pid1234 and 479 // %t => YYYY-MM-DD_HH-MM-SS 480 static const char* make_log_name(const char* log_name, const char* force_directory) { 481 char timestr[32]; 482 get_datetime_string(timestr, sizeof(timestr)); 483 return make_log_name_internal(log_name, force_directory, os::current_process_id(), 484 timestr); 485 } 486 487 fileStream::fileStream(const char* file_name) { 488 _file = fopen(file_name, "w"); 489 if (_file != NULL) { 490 _need_close = true; 491 } else { 492 warning("Cannot open file %s due to %s\n", file_name, strerror(errno)); 493 _need_close = false; 494 } 495 } 496 497 fileStream::fileStream(const char* file_name, const char* opentype) { 498 _file = fopen(file_name, opentype); 499 if (_file != NULL) { 500 _need_close = true; 501 } else { 502 warning("Cannot open file %s due to %s\n", file_name, strerror(errno)); 503 _need_close = false; 504 } 505 } 506 507 void fileStream::write(const char* s, size_t len) { 508 if (_file != NULL) { 509 // Make an unused local variable to avoid warning from gcc 4.x compiler. 510 size_t count = fwrite(s, 1, len, _file); 511 } 512 update_position(s, len); 513 } 514 515 long fileStream::fileSize() { 516 long size = -1; 517 if (_file != NULL) { 518 long pos = ::ftell(_file); 519 if (::fseek(_file, 0, SEEK_END) == 0) { 520 size = ::ftell(_file); 521 } 522 ::fseek(_file, pos, SEEK_SET); 523 } 524 return size; 525 } 526 527 char* fileStream::readln(char *data, int count ) { 528 char * ret = ::fgets(data, count, _file); 529 //Get rid of annoying \n char 530 data[::strlen(data)-1] = '\0'; 531 return ret; 532 } 533 534 fileStream::~fileStream() { 535 if (_file != NULL) { 536 if (_need_close) fclose(_file); 537 _file = NULL; 538 } 539 } 540 541 void fileStream::flush() { 542 fflush(_file); 543 } 544 545 fdStream::fdStream(const char* file_name) { 546 _fd = open(file_name, O_WRONLY | O_CREAT | O_TRUNC, 0666); 547 _need_close = true; 548 } 549 550 fdStream::~fdStream() { 551 if (_fd != -1) { 552 if (_need_close) close(_fd); 553 _fd = -1; 554 } 555 } 556 557 void fdStream::write(const char* s, size_t len) { 558 if (_fd != -1) { 559 // Make an unused local variable to avoid warning from gcc 4.x compiler. 560 size_t count = ::write(_fd, s, (int)len); 561 } 562 update_position(s, len); 563 } 564 565 defaultStream* defaultStream::instance = NULL; 566 int defaultStream::_output_fd = 1; 567 int defaultStream::_error_fd = 2; 568 FILE* defaultStream::_output_stream = stdout; 569 FILE* defaultStream::_error_stream = stderr; 570 571 #define LOG_MAJOR_VERSION 160 572 #define LOG_MINOR_VERSION 1 573 574 void defaultStream::init() { 575 _inited = true; 576 if (LogVMOutput || LogCompilation) { 577 init_log(); 578 } 579 } 580 581 bool defaultStream::has_log_file() { 582 // lazily create log file (at startup, LogVMOutput is false even 583 // if +LogVMOutput is used, because the flags haven't been parsed yet) 584 // For safer printing during fatal error handling, do not init logfile 585 // if a VM error has been reported. 586 if (!_inited && !is_error_reported()) init(); 587 return _log_file != NULL; 588 } 589 590 fileStream* defaultStream::open_file(const char* log_name) { 591 const char* try_name = make_log_name(log_name, NULL); 592 if (try_name == NULL) { 593 warning("Cannot open file %s: file name is too long.\n", log_name); 594 return NULL; 595 } 596 597 fileStream* file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name); 598 FREE_C_HEAP_ARRAY(char, try_name); 599 if (file->is_open()) { 600 return file; 601 } 602 603 // Try again to open the file in the temp directory. 604 delete file; 605 char warnbuf[O_BUFLEN*2]; 606 jio_snprintf(warnbuf, sizeof(warnbuf), "Warning: Cannot open log file: %s\n", log_name); 607 // Note: This feature is for maintainer use only. No need for L10N. 608 jio_print(warnbuf); 609 try_name = make_log_name(log_name, os::get_temp_directory()); 610 if (try_name == NULL) { 611 warning("Cannot open file %s: file name is too long for directory %s.\n", log_name, os::get_temp_directory()); 612 return NULL; 613 } 614 615 jio_snprintf(warnbuf, sizeof(warnbuf), 616 "Warning: Forcing option -XX:LogFile=%s\n", try_name); 617 jio_print(warnbuf); 618 619 file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name); 620 FREE_C_HEAP_ARRAY(char, try_name); 621 if (file->is_open()) { 622 return file; 623 } 624 625 delete file; 626 return NULL; 627 } 628 629 void defaultStream::init_log() { 630 // %%% Need a MutexLocker? 631 const char* log_name = LogFile != NULL ? LogFile : "hotspot_%p.log"; 632 fileStream* file = open_file(log_name); 633 634 if (file != NULL) { 635 _log_file = file; 636 _outer_xmlStream = new(ResourceObj::C_HEAP, mtInternal) xmlStream(file); 637 start_log(); 638 } else { 639 // and leave xtty as NULL 640 LogVMOutput = false; 641 DisplayVMOutput = true; 642 LogCompilation = false; 643 } 644 } 645 646 void defaultStream::start_log() { 647 xmlStream*xs = _outer_xmlStream; 648 if (this == tty) xtty = xs; 649 // Write XML header. 650 xs->print_cr("<?xml version='1.0' encoding='UTF-8'?>"); 651 // (For now, don't bother to issue a DTD for this private format.) 652 jlong time_ms = os::javaTimeMillis() - tty->time_stamp().milliseconds(); 653 // %%% Should be: jlong time_ms = os::start_time_milliseconds(), if 654 // we ever get round to introduce that method on the os class 655 xs->head("hotspot_log version='%d %d'" 656 " process='%d' time_ms='" INT64_FORMAT "'", 657 LOG_MAJOR_VERSION, LOG_MINOR_VERSION, 658 os::current_process_id(), (int64_t)time_ms); 659 // Write VM version header immediately. 660 xs->head("vm_version"); 661 xs->head("name"); xs->text("%s", VM_Version::vm_name()); xs->cr(); 662 xs->tail("name"); 663 xs->head("release"); xs->text("%s", VM_Version::vm_release()); xs->cr(); 664 xs->tail("release"); 665 xs->head("info"); xs->text("%s", VM_Version::internal_vm_info_string()); xs->cr(); 666 xs->tail("info"); 667 xs->tail("vm_version"); 668 // Record information about the command-line invocation. 669 xs->head("vm_arguments"); // Cf. Arguments::print_on() 670 if (Arguments::num_jvm_flags() > 0) { 671 xs->head("flags"); 672 Arguments::print_jvm_flags_on(xs->text()); 673 xs->tail("flags"); 674 } 675 if (Arguments::num_jvm_args() > 0) { 676 xs->head("args"); 677 Arguments::print_jvm_args_on(xs->text()); 678 xs->tail("args"); 679 } 680 if (Arguments::java_command() != NULL) { 681 xs->head("command"); xs->text()->print_cr("%s", Arguments::java_command()); 682 xs->tail("command"); 683 } 684 if (Arguments::sun_java_launcher() != NULL) { 685 xs->head("launcher"); xs->text()->print_cr("%s", Arguments::sun_java_launcher()); 686 xs->tail("launcher"); 687 } 688 if (Arguments::system_properties() != NULL) { 689 xs->head("properties"); 690 // Print it as a java-style property list. 691 // System properties don't generally contain newlines, so don't bother with unparsing. 692 outputStream *text = xs->text(); 693 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { 694 // Print in two stages to avoid problems with long 695 // keys/values. 696 text->print_raw(p->key()); 697 text->put('='); 698 text->print_raw_cr(p->value()); 699 } 700 xs->tail("properties"); 701 } 702 xs->tail("vm_arguments"); 703 // tty output per se is grouped under the <tty>...</tty> element. 704 xs->head("tty"); 705 // All further non-markup text gets copied to the tty: 706 xs->_text = this; // requires friend declaration! 707 } 708 709 // finish_log() is called during normal VM shutdown. finish_log_on_error() is 710 // called by ostream_abort() after a fatal error. 711 // 712 void defaultStream::finish_log() { 713 xmlStream* xs = _outer_xmlStream; 714 xs->done("tty"); 715 716 // Other log forks are appended here, at the End of Time: 717 CompileLog::finish_log(xs->out()); // write compile logging, if any, now 718 719 xs->done("hotspot_log"); 720 xs->flush(); 721 722 fileStream* file = _log_file; 723 _log_file = NULL; 724 725 delete _outer_xmlStream; 726 _outer_xmlStream = NULL; 727 728 file->flush(); 729 delete file; 730 } 731 732 void defaultStream::finish_log_on_error(char *buf, int buflen) { 733 xmlStream* xs = _outer_xmlStream; 734 735 if (xs && xs->out()) { 736 737 xs->done_raw("tty"); 738 739 // Other log forks are appended here, at the End of Time: 740 CompileLog::finish_log_on_error(xs->out(), buf, buflen); // write compile logging, if any, now 741 742 xs->done_raw("hotspot_log"); 743 xs->flush(); 744 745 fileStream* file = _log_file; 746 _log_file = NULL; 747 _outer_xmlStream = NULL; 748 749 if (file) { 750 file->flush(); 751 752 // Can't delete or close the file because delete and fclose aren't 753 // async-safe. We are about to die, so leave it to the kernel. 754 // delete file; 755 } 756 } 757 } 758 759 intx defaultStream::hold(intx writer_id) { 760 bool has_log = has_log_file(); // check before locking 761 if (// impossible, but who knows? 762 writer_id == NO_WRITER || 763 764 // bootstrap problem 765 tty_lock == NULL || 766 767 // can't grab a lock if current Thread isn't set 768 Thread::current_or_null() == NULL || 769 770 // developer hook 771 !SerializeVMOutput || 772 773 // VM already unhealthy 774 is_error_reported() || 775 776 // safepoint == global lock (for VM only) 777 (SafepointSynchronize::is_synchronizing() && 778 Thread::current()->is_VM_thread()) 779 ) { 780 // do not attempt to lock unless we know the thread and the VM is healthy 781 return NO_WRITER; 782 } 783 if (_writer == writer_id) { 784 // already held, no need to re-grab the lock 785 return NO_WRITER; 786 } 787 tty_lock->lock_without_safepoint_check(); 788 // got the lock 789 if (writer_id != _last_writer) { 790 if (has_log) { 791 _log_file->bol(); 792 // output a hint where this output is coming from: 793 _log_file->print_cr("<writer thread='" UINTX_FORMAT "'/>", writer_id); 794 } 795 _last_writer = writer_id; 796 } 797 _writer = writer_id; 798 return writer_id; 799 } 800 801 void defaultStream::release(intx holder) { 802 if (holder == NO_WRITER) { 803 // nothing to release: either a recursive lock, or we scribbled (too bad) 804 return; 805 } 806 if (_writer != holder) { 807 return; // already unlocked, perhaps via break_tty_lock_for_safepoint 808 } 809 _writer = NO_WRITER; 810 tty_lock->unlock(); 811 } 812 813 814 // Yuck: jio_print does not accept char*/len. 815 static void call_jio_print(const char* s, size_t len) { 816 char buffer[O_BUFLEN+100]; 817 if (len > sizeof(buffer)-1) { 818 warning("increase O_BUFLEN in ostream.cpp -- output truncated"); 819 len = sizeof(buffer)-1; 820 } 821 strncpy(buffer, s, len); 822 buffer[len] = '\0'; 823 jio_print(buffer); 824 } 825 826 827 void defaultStream::write(const char* s, size_t len) { 828 intx thread_id = os::current_thread_id(); 829 intx holder = hold(thread_id); 830 831 if (DisplayVMOutput && 832 (_outer_xmlStream == NULL || !_outer_xmlStream->inside_attrs())) { 833 // print to output stream. It can be redirected by a vfprintf hook 834 if (s[len] == '\0') { 835 jio_print(s); 836 } else { 837 call_jio_print(s, len); 838 } 839 } 840 841 // print to log file 842 if (has_log_file()) { 843 int nl0 = _newlines; 844 xmlTextStream::write(s, len); 845 // flush the log file too, if there were any newlines 846 if (nl0 != _newlines){ 847 flush(); 848 } 849 } else { 850 update_position(s, len); 851 } 852 853 release(holder); 854 } 855 856 intx ttyLocker::hold_tty() { 857 if (defaultStream::instance == NULL) return defaultStream::NO_WRITER; 858 intx thread_id = os::current_thread_id(); 859 return defaultStream::instance->hold(thread_id); 860 } 861 862 void ttyLocker::release_tty(intx holder) { 863 if (holder == defaultStream::NO_WRITER) return; 864 defaultStream::instance->release(holder); 865 } 866 867 bool ttyLocker::release_tty_if_locked() { 868 intx thread_id = os::current_thread_id(); 869 if (defaultStream::instance->writer() == thread_id) { 870 // release the lock and return true so callers know if was 871 // previously held. 872 release_tty(thread_id); 873 return true; 874 } 875 return false; 876 } 877 878 void ttyLocker::break_tty_lock_for_safepoint(intx holder) { 879 if (defaultStream::instance != NULL && 880 defaultStream::instance->writer() == holder) { 881 if (xtty != NULL) { 882 xtty->print_cr("<!-- safepoint while printing -->"); 883 } 884 defaultStream::instance->release(holder); 885 } 886 // (else there was no lock to break) 887 } 888 889 void ostream_init() { 890 if (defaultStream::instance == NULL) { 891 defaultStream::instance = new(ResourceObj::C_HEAP, mtInternal) defaultStream(); 892 tty = defaultStream::instance; 893 894 // We want to ensure that time stamps in GC logs consider time 0 895 // the time when the JVM is initialized, not the first time we ask 896 // for a time stamp. So, here, we explicitly update the time stamp 897 // of tty. 898 tty->time_stamp().update_to(1); 899 } 900 } 901 902 void ostream_init_log() { 903 // Note : this must be called AFTER ostream_init() 904 905 #if INCLUDE_CDS 906 // For -XX:DumpLoadedClassList=<file> option 907 if (DumpLoadedClassList != NULL) { 908 const char* list_name = make_log_name(DumpLoadedClassList, NULL); 909 classlist_file = new(ResourceObj::C_HEAP, mtInternal) 910 fileStream(list_name); 911 FREE_C_HEAP_ARRAY(char, list_name); 912 } 913 #endif 914 915 // If we haven't lazily initialized the logfile yet, do it now, 916 // to avoid the possibility of lazy initialization during a VM 917 // crash, which can affect the stability of the fatal error handler. 918 defaultStream::instance->has_log_file(); 919 } 920 921 // ostream_exit() is called during normal VM exit to finish log files, flush 922 // output and free resource. 923 void ostream_exit() { 924 static bool ostream_exit_called = false; 925 if (ostream_exit_called) return; 926 ostream_exit_called = true; 927 #if INCLUDE_CDS 928 if (classlist_file != NULL) { 929 delete classlist_file; 930 } 931 #endif 932 { 933 // we temporaly disable PrintMallocFree here 934 // as otherwise it'll lead to using of almost deleted 935 // tty or defaultStream::instance in logging facility 936 // of HeapFree(), see 6391258 937 DEBUG_ONLY(FlagSetting fs(PrintMallocFree, false);) 938 if (tty != defaultStream::instance) { 939 delete tty; 940 } 941 if (defaultStream::instance != NULL) { 942 delete defaultStream::instance; 943 } 944 } 945 tty = NULL; 946 xtty = NULL; 947 defaultStream::instance = NULL; 948 } 949 950 // ostream_abort() is called by os::abort() when VM is about to die. 951 void ostream_abort() { 952 // Here we can't delete tty, just flush its output 953 if (tty) tty->flush(); 954 955 if (defaultStream::instance != NULL) { 956 static char buf[4096]; 957 defaultStream::instance->finish_log_on_error(buf, sizeof(buf)); 958 } 959 } 960 961 staticBufferStream::staticBufferStream(char* buffer, size_t buflen, 962 outputStream *outer_stream) { 963 _buffer = buffer; 964 _buflen = buflen; 965 _outer_stream = outer_stream; 966 // compile task prints time stamp relative to VM start 967 _stamp.update_to(1); 968 } 969 970 void staticBufferStream::write(const char* c, size_t len) { 971 _outer_stream->print_raw(c, (int)len); 972 } 973 974 void staticBufferStream::flush() { 975 _outer_stream->flush(); 976 } 977 978 void staticBufferStream::print(const char* format, ...) { 979 va_list ap; 980 va_start(ap, format); 981 size_t len; 982 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, false, len); 983 write(str, len); 984 va_end(ap); 985 } 986 987 void staticBufferStream::print_cr(const char* format, ...) { 988 va_list ap; 989 va_start(ap, format); 990 size_t len; 991 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, true, len); 992 write(str, len); 993 va_end(ap); 994 } 995 996 void staticBufferStream::vprint(const char *format, va_list argptr) { 997 size_t len; 998 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, false, len); 999 write(str, len); 1000 } 1001 1002 void staticBufferStream::vprint_cr(const char* format, va_list argptr) { 1003 size_t len; 1004 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, true, len); 1005 write(str, len); 1006 } 1007 1008 bufferedStream::bufferedStream(size_t initial_size, size_t bufmax) : outputStream() { 1009 buffer_length = initial_size; 1010 buffer = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal); 1011 buffer_pos = 0; 1012 buffer_fixed = false; 1013 buffer_max = bufmax; 1014 } 1015 1016 bufferedStream::bufferedStream(char* fixed_buffer, size_t fixed_buffer_size, size_t bufmax) : outputStream() { 1017 buffer_length = fixed_buffer_size; 1018 buffer = fixed_buffer; 1019 buffer_pos = 0; 1020 buffer_fixed = true; 1021 buffer_max = bufmax; 1022 } 1023 1024 void bufferedStream::write(const char* s, size_t len) { 1025 1026 if(buffer_pos + len > buffer_max) { 1027 flush(); 1028 } 1029 1030 size_t end = buffer_pos + len; 1031 if (end >= buffer_length) { 1032 if (buffer_fixed) { 1033 // if buffer cannot resize, silently truncate 1034 len = buffer_length - buffer_pos - 1; 1035 } else { 1036 // For small overruns, double the buffer. For larger ones, 1037 // increase to the requested size. 1038 if (end < buffer_length * 2) { 1039 end = buffer_length * 2; 1040 } 1041 buffer = REALLOC_C_HEAP_ARRAY(char, buffer, end, mtInternal); 1042 buffer_length = end; 1043 } 1044 } 1045 memcpy(buffer + buffer_pos, s, len); 1046 buffer_pos += len; 1047 update_position(s, len); 1048 } 1049 1050 char* bufferedStream::as_string() { 1051 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1); 1052 strncpy(copy, buffer, buffer_pos); 1053 copy[buffer_pos] = 0; // terminating null 1054 return copy; 1055 } 1056 1057 bufferedStream::~bufferedStream() { 1058 if (!buffer_fixed) { 1059 FREE_C_HEAP_ARRAY(char, buffer); 1060 } 1061 } 1062 1063 #ifndef PRODUCT 1064 1065 #if defined(SOLARIS) || defined(LINUX) || defined(AIX) || defined(_ALLBSD_SOURCE) 1066 #include <sys/types.h> 1067 #include <sys/socket.h> 1068 #include <netinet/in.h> 1069 #include <arpa/inet.h> 1070 #endif 1071 1072 // Network access 1073 networkStream::networkStream() : bufferedStream(1024*10, 1024*10) { 1074 1075 _socket = -1; 1076 1077 int result = os::socket(AF_INET, SOCK_STREAM, 0); 1078 if (result <= 0) { 1079 assert(false, "Socket could not be created!"); 1080 } else { 1081 _socket = result; 1082 } 1083 } 1084 1085 int networkStream::read(char *buf, size_t len) { 1086 return os::recv(_socket, buf, (int)len, 0); 1087 } 1088 1089 void networkStream::flush() { 1090 if (size() != 0) { 1091 int result = os::raw_send(_socket, (char *)base(), size(), 0); 1092 assert(result != -1, "connection error"); 1093 assert(result == (int)size(), "didn't send enough data"); 1094 } 1095 reset(); 1096 } 1097 1098 networkStream::~networkStream() { 1099 close(); 1100 } 1101 1102 void networkStream::close() { 1103 if (_socket != -1) { 1104 flush(); 1105 os::socket_close(_socket); 1106 _socket = -1; 1107 } 1108 } 1109 1110 bool networkStream::connect(const char *ip, short port) { 1111 1112 struct sockaddr_in server; 1113 server.sin_family = AF_INET; 1114 server.sin_port = htons(port); 1115 1116 server.sin_addr.s_addr = inet_addr(ip); 1117 if (server.sin_addr.s_addr == (uint32_t)-1) { 1118 struct hostent* host = os::get_host_by_name((char*)ip); 1119 if (host != NULL) { 1120 memcpy(&server.sin_addr, host->h_addr_list[0], host->h_length); 1121 } else { 1122 return false; 1123 } 1124 } 1125 1126 1127 int result = os::connect(_socket, (struct sockaddr*)&server, sizeof(struct sockaddr_in)); 1128 return (result >= 0); 1129 } 1130 1131 #endif 1132 1133 void logStream::write(const char* s, size_t len) { 1134 if (len > 0 && s[len - 1] == '\n') { 1135 _current_line.write(s, len - 1); 1136 _log_func("%s", _current_line.as_string()); 1137 _current_line.reset(); 1138 } else { 1139 _current_line.write(s, len); 1140 } 1141 update_position(s, len); 1142 }