1 /* 2 * Copyright (c) 1997, 2011, 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 "oops/oop.inline.hpp" 28 #include "runtime/arguments.hpp" 29 #include "utilities/defaultStream.hpp" 30 #include "utilities/ostream.hpp" 31 #include "utilities/top.hpp" 32 #include "utilities/xmlstream.hpp" 33 #ifdef TARGET_OS_FAMILY_linux 34 # include "os_linux.inline.hpp" 35 #endif 36 #ifdef TARGET_OS_FAMILY_solaris 37 # include "os_solaris.inline.hpp" 38 #endif 39 #ifdef TARGET_OS_FAMILY_windows 40 # include "os_windows.inline.hpp" 41 #endif 42 43 extern "C" void jio_print(const char* s); // Declarationtion of jvm method 44 45 outputStream::outputStream(int width) { 46 _width = width; 47 _position = 0; 48 _newlines = 0; 49 _precount = 0; 50 _indentation = 0; 51 } 52 53 outputStream::outputStream(int width, bool has_time_stamps) { 54 _width = width; 55 _position = 0; 56 _newlines = 0; 57 _precount = 0; 58 _indentation = 0; 59 if (has_time_stamps) _stamp.update(); 60 } 61 62 void outputStream::update_position(const char* s, size_t len) { 63 for (size_t i = 0; i < len; i++) { 64 char ch = s[i]; 65 if (ch == '\n') { 66 _newlines += 1; 67 _precount += _position + 1; 68 _position = 0; 69 } else if (ch == '\t') { 70 int tw = 8 - (_position & 7); 71 _position += tw; 72 _precount -= tw-1; // invariant: _precount + _position == total count 73 } else { 74 _position += 1; 75 } 76 } 77 } 78 79 // Execute a vsprintf, using the given buffer if necessary. 80 // Return a pointer to the formatted string. 81 const char* outputStream::do_vsnprintf(char* buffer, size_t buflen, 82 const char* format, va_list ap, 83 bool add_cr, 84 size_t& result_len) { 85 const char* result; 86 if (add_cr) buflen--; 87 if (!strchr(format, '%')) { 88 // constant format string 89 result = format; 90 result_len = strlen(result); 91 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate 92 } else if (format[0] == '%' && format[1] == 's' && format[2] == '\0') { 93 // trivial copy-through format string 94 result = va_arg(ap, const char*); 95 result_len = strlen(result); 96 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate 97 } else if (vsnprintf(buffer, buflen, format, ap) >= 0) { 98 result = buffer; 99 result_len = strlen(result); 100 } else { 101 DEBUG_ONLY(warning("increase O_BUFLEN in ostream.hpp -- output truncated");) 102 result = buffer; 103 result_len = buflen - 1; 104 buffer[result_len] = 0; 105 } 106 if (add_cr) { 107 if (result != buffer) { 108 strncpy(buffer, result, buflen); 109 result = buffer; 110 } 111 buffer[result_len++] = '\n'; 112 buffer[result_len] = 0; 113 } 114 return result; 115 } 116 117 void outputStream::print(const char* format, ...) { 118 char buffer[O_BUFLEN]; 119 va_list ap; 120 va_start(ap, format); 121 size_t len; 122 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, false, len); 123 write(str, len); 124 va_end(ap); 125 } 126 127 void outputStream::print_cr(const char* format, ...) { 128 char buffer[O_BUFLEN]; 129 va_list ap; 130 va_start(ap, format); 131 size_t len; 132 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, true, len); 133 write(str, len); 134 va_end(ap); 135 } 136 137 void outputStream::vprint(const char *format, va_list argptr) { 138 char buffer[O_BUFLEN]; 139 size_t len; 140 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, false, len); 141 write(str, len); 142 } 143 144 void outputStream::vprint_cr(const char* format, va_list argptr) { 145 char buffer[O_BUFLEN]; 146 size_t len; 147 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, true, len); 148 write(str, len); 149 } 150 151 void outputStream::fill_to(int col) { 152 int need_fill = col - position(); 153 sp(need_fill); 154 } 155 156 void outputStream::move_to(int col, int slop, int min_space) { 157 if (position() >= col + slop) 158 cr(); 159 int need_fill = col - position(); 160 if (need_fill < min_space) 161 need_fill = min_space; 162 sp(need_fill); 163 } 164 165 void outputStream::put(char ch) { 166 assert(ch != 0, "please fix call site"); 167 char buf[] = { ch, '\0' }; 168 write(buf, 1); 169 } 170 171 #define SP_USE_TABS false 172 173 void outputStream::sp(int count) { 174 if (count < 0) return; 175 if (SP_USE_TABS && count >= 8) { 176 int target = position() + count; 177 while (count >= 8) { 178 this->write("\t", 1); 179 count -= 8; 180 } 181 count = target - position(); 182 } 183 while (count > 0) { 184 int nw = (count > 8) ? 8 : count; 185 this->write(" ", nw); 186 count -= nw; 187 } 188 } 189 190 void outputStream::cr() { 191 this->write("\n", 1); 192 } 193 194 void outputStream::stamp() { 195 if (! _stamp.is_updated()) { 196 _stamp.update(); // start at 0 on first call to stamp() 197 } 198 199 // outputStream::stamp() may get called by ostream_abort(), use snprintf 200 // to avoid allocating large stack buffer in print(). 201 char buf[40]; 202 jio_snprintf(buf, sizeof(buf), "%.3f", _stamp.seconds()); 203 print_raw(buf); 204 } 205 206 void outputStream::stamp(bool guard, 207 const char* prefix, 208 const char* suffix) { 209 if (!guard) { 210 return; 211 } 212 print_raw(prefix); 213 stamp(); 214 print_raw(suffix); 215 } 216 217 void outputStream::date_stamp(bool guard, 218 const char* prefix, 219 const char* suffix) { 220 if (!guard) { 221 return; 222 } 223 print_raw(prefix); 224 static const char error_time[] = "yyyy-mm-ddThh:mm:ss.mmm+zzzz"; 225 static const int buffer_length = 32; 226 char buffer[buffer_length]; 227 const char* iso8601_result = os::iso8601_time(buffer, buffer_length); 228 if (iso8601_result != NULL) { 229 print_raw(buffer); 230 } else { 231 print_raw(error_time); 232 } 233 print_raw(suffix); 234 return; 235 } 236 237 void outputStream::indent() { 238 while (_position < _indentation) sp(); 239 } 240 241 void outputStream::print_jlong(jlong value) { 242 // N.B. Same as INT64_FORMAT 243 print(os::jlong_format_specifier(), value); 244 } 245 246 void outputStream::print_julong(julong value) { 247 // N.B. Same as UINT64_FORMAT 248 print(os::julong_format_specifier(), value); 249 } 250 251 stringStream::stringStream(size_t initial_size) : outputStream() { 252 buffer_length = initial_size; 253 buffer = NEW_RESOURCE_ARRAY(char, buffer_length); 254 buffer_pos = 0; 255 buffer_fixed = false; 256 } 257 258 // useful for output to fixed chunks of memory, such as performance counters 259 stringStream::stringStream(char* fixed_buffer, size_t fixed_buffer_size) : outputStream() { 260 buffer_length = fixed_buffer_size; 261 buffer = fixed_buffer; 262 buffer_pos = 0; 263 buffer_fixed = true; 264 } 265 266 void stringStream::write(const char* s, size_t len) { 267 size_t write_len = len; // number of non-null bytes to write 268 size_t end = buffer_pos + len + 1; // position after write and final '\0' 269 if (end > buffer_length) { 270 if (buffer_fixed) { 271 // if buffer cannot resize, silently truncate 272 end = buffer_length; 273 write_len = end - buffer_pos - 1; // leave room for the final '\0' 274 } else { 275 // For small overruns, double the buffer. For larger ones, 276 // increase to the requested size. 277 if (end < buffer_length * 2) { 278 end = buffer_length * 2; 279 } 280 char* oldbuf = buffer; 281 buffer = NEW_RESOURCE_ARRAY(char, end); 282 strncpy(buffer, oldbuf, buffer_pos); 283 buffer_length = end; 284 } 285 } 286 // invariant: buffer is always null-terminated 287 guarantee(buffer_pos + write_len + 1 <= buffer_length, "stringStream oob"); 288 buffer[buffer_pos + write_len] = 0; 289 strncpy(buffer + buffer_pos, s, write_len); 290 buffer_pos += write_len; 291 292 // Note that the following does not depend on write_len. 293 // This means that position and count get updated 294 // even when overflow occurs. 295 update_position(s, len); 296 } 297 298 char* stringStream::as_string() { 299 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1); 300 strncpy(copy, buffer, buffer_pos); 301 copy[buffer_pos] = 0; // terminating null 302 return copy; 303 } 304 305 stringStream::~stringStream() {} 306 307 xmlStream* xtty; 308 outputStream* tty; 309 outputStream* gclog_or_tty; 310 extern Mutex* tty_lock; 311 312 fileStream::fileStream(const char* file_name) { 313 _file = fopen(file_name, "w"); 314 _need_close = true; 315 } 316 317 fileStream::fileStream(const char* file_name, const char* opentype) { 318 _file = fopen(file_name, opentype); 319 _need_close = true; 320 } 321 322 void fileStream::write(const char* s, size_t len) { 323 if (_file != NULL) { 324 // Make an unused local variable to avoid warning from gcc 4.x compiler. 325 size_t count = fwrite(s, 1, len, _file); 326 } 327 update_position(s, len); 328 } 329 330 long fileStream::fileSize() { 331 long size = -1; 332 if (_file != NULL) { 333 long pos = ::ftell(_file); 334 if (::fseek(_file, 0, SEEK_END) == 0) { 335 size = ::ftell(_file); 336 } 337 ::fseek(_file, pos, SEEK_SET); 338 } 339 return size; 340 } 341 342 char* fileStream::readln(char *data, int count ) { 343 char * ret = ::fgets(data, count, _file); 344 //Get rid of annoying \n char 345 data[::strlen(data)-1] = '\0'; 346 return ret; 347 } 348 349 fileStream::~fileStream() { 350 if (_file != NULL) { 351 if (_need_close) fclose(_file); 352 _file = NULL; 353 } 354 } 355 356 void fileStream::flush() { 357 fflush(_file); 358 } 359 360 fdStream::fdStream(const char* file_name) { 361 _fd = open(file_name, O_WRONLY | O_CREAT | O_TRUNC, 0666); 362 _need_close = true; 363 } 364 365 fdStream::~fdStream() { 366 if (_fd != -1) { 367 if (_need_close) close(_fd); 368 _fd = -1; 369 } 370 } 371 372 void fdStream::write(const char* s, size_t len) { 373 if (_fd != -1) { 374 // Make an unused local variable to avoid warning from gcc 4.x compiler. 375 size_t count = ::write(_fd, s, (int)len); 376 } 377 update_position(s, len); 378 } 379 380 defaultStream* defaultStream::instance = NULL; 381 int defaultStream::_output_fd = 1; 382 int defaultStream::_error_fd = 2; 383 FILE* defaultStream::_output_stream = stdout; 384 FILE* defaultStream::_error_stream = stderr; 385 386 #define LOG_MAJOR_VERSION 160 387 #define LOG_MINOR_VERSION 1 388 389 void defaultStream::init() { 390 _inited = true; 391 if (LogVMOutput || LogCompilation) { 392 init_log(); 393 } 394 } 395 396 bool defaultStream::has_log_file() { 397 // lazily create log file (at startup, LogVMOutput is false even 398 // if +LogVMOutput is used, because the flags haven't been parsed yet) 399 // For safer printing during fatal error handling, do not init logfile 400 // if a VM error has been reported. 401 if (!_inited && !is_error_reported()) init(); 402 return _log_file != NULL; 403 } 404 405 static const char* make_log_name(const char* log_name, const char* force_directory) { 406 const char* basename = log_name; 407 char file_sep = os::file_separator()[0]; 408 const char* cp; 409 for (cp = log_name; *cp != '\0'; cp++) { 410 if (*cp == '/' || *cp == file_sep) { 411 basename = cp+1; 412 } 413 } 414 const char* nametail = log_name; 415 416 // Compute buffer length 417 size_t buffer_length; 418 if (force_directory != NULL) { 419 buffer_length = strlen(force_directory) + strlen(os::file_separator()) + 420 strlen(basename) + 1; 421 } else { 422 buffer_length = strlen(log_name) + 1; 423 } 424 425 const char* star = strchr(basename, '*'); 426 int star_pos = (star == NULL) ? -1 : (star - nametail); 427 int skip = 1; 428 if (star == NULL) { 429 // Try %p 430 star = strstr(basename, "%p"); 431 if (star != NULL) { 432 skip = 2; 433 } 434 } 435 star_pos = (star == NULL) ? -1 : (star - nametail); 436 437 char pid[32]; 438 if (star_pos >= 0) { 439 jio_snprintf(pid, sizeof(pid), "%u", os::current_process_id()); 440 buffer_length += strlen(pid); 441 } 442 443 // Create big enough buffer. 444 char *buf = NEW_C_HEAP_ARRAY(char, buffer_length); 445 446 strcpy(buf, ""); 447 if (force_directory != NULL) { 448 strcat(buf, force_directory); 449 strcat(buf, os::file_separator()); 450 nametail = basename; // completely skip directory prefix 451 } 452 453 if (star_pos >= 0) { 454 // convert foo*bar.log or foo%pbar.log to foo123bar.log 455 int buf_pos = (int) strlen(buf); 456 strncpy(&buf[buf_pos], nametail, star_pos); 457 strcpy(&buf[buf_pos + star_pos], pid); 458 nametail += star_pos + skip; // skip prefix and pid format 459 } 460 461 strcat(buf, nametail); // append rest of name, or all of name 462 return buf; 463 } 464 465 void defaultStream::init_log() { 466 // %%% Need a MutexLocker? 467 const char* log_name = LogFile != NULL ? LogFile : "hotspot.log"; 468 const char* try_name = make_log_name(log_name, NULL); 469 fileStream* file = new(ResourceObj::C_HEAP) fileStream(try_name); 470 if (!file->is_open()) { 471 // Try again to open the file. 472 char warnbuf[O_BUFLEN*2]; 473 jio_snprintf(warnbuf, sizeof(warnbuf), 474 "Warning: Cannot open log file: %s\n", try_name); 475 // Note: This feature is for maintainer use only. No need for L10N. 476 jio_print(warnbuf); 477 FREE_C_HEAP_ARRAY(char, try_name); 478 try_name = make_log_name("hs_pid%p.log", os::get_temp_directory()); 479 jio_snprintf(warnbuf, sizeof(warnbuf), 480 "Warning: Forcing option -XX:LogFile=%s\n", try_name); 481 jio_print(warnbuf); 482 delete file; 483 file = new(ResourceObj::C_HEAP) fileStream(try_name); 484 FREE_C_HEAP_ARRAY(char, try_name); 485 } 486 if (file->is_open()) { 487 _log_file = file; 488 xmlStream* xs = new(ResourceObj::C_HEAP) xmlStream(file); 489 _outer_xmlStream = xs; 490 if (this == tty) xtty = xs; 491 // Write XML header. 492 xs->print_cr("<?xml version='1.0' encoding='UTF-8'?>"); 493 // (For now, don't bother to issue a DTD for this private format.) 494 jlong time_ms = os::javaTimeMillis() - tty->time_stamp().milliseconds(); 495 // %%% Should be: jlong time_ms = os::start_time_milliseconds(), if 496 // we ever get round to introduce that method on the os class 497 xs->head("hotspot_log version='%d %d'" 498 " process='%d' time_ms='"INT64_FORMAT"'", 499 LOG_MAJOR_VERSION, LOG_MINOR_VERSION, 500 os::current_process_id(), time_ms); 501 // Write VM version header immediately. 502 xs->head("vm_version"); 503 xs->head("name"); xs->text("%s", VM_Version::vm_name()); xs->cr(); 504 xs->tail("name"); 505 xs->head("release"); xs->text("%s", VM_Version::vm_release()); xs->cr(); 506 xs->tail("release"); 507 xs->head("info"); xs->text("%s", VM_Version::internal_vm_info_string()); xs->cr(); 508 xs->tail("info"); 509 xs->tail("vm_version"); 510 // Record information about the command-line invocation. 511 xs->head("vm_arguments"); // Cf. Arguments::print_on() 512 if (Arguments::num_jvm_flags() > 0) { 513 xs->head("flags"); 514 Arguments::print_jvm_flags_on(xs->text()); 515 xs->tail("flags"); 516 } 517 if (Arguments::num_jvm_args() > 0) { 518 xs->head("args"); 519 Arguments::print_jvm_args_on(xs->text()); 520 xs->tail("args"); 521 } 522 if (Arguments::java_command() != NULL) { 523 xs->head("command"); xs->text()->print_cr("%s", Arguments::java_command()); 524 xs->tail("command"); 525 } 526 if (Arguments::sun_java_launcher() != NULL) { 527 xs->head("launcher"); xs->text()->print_cr("%s", Arguments::sun_java_launcher()); 528 xs->tail("launcher"); 529 } 530 if (Arguments::system_properties() != NULL) { 531 xs->head("properties"); 532 // Print it as a java-style property list. 533 // System properties don't generally contain newlines, so don't bother with unparsing. 534 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { 535 xs->text()->print_cr("%s=%s", p->key(), p->value()); 536 } 537 xs->tail("properties"); 538 } 539 xs->tail("vm_arguments"); 540 // tty output per se is grouped under the <tty>...</tty> element. 541 xs->head("tty"); 542 // All further non-markup text gets copied to the tty: 543 xs->_text = this; // requires friend declaration! 544 } else { 545 delete(file); 546 // and leave xtty as NULL 547 LogVMOutput = false; 548 DisplayVMOutput = true; 549 LogCompilation = false; 550 } 551 } 552 553 // finish_log() is called during normal VM shutdown. finish_log_on_error() is 554 // called by ostream_abort() after a fatal error. 555 // 556 void defaultStream::finish_log() { 557 xmlStream* xs = _outer_xmlStream; 558 xs->done("tty"); 559 560 // Other log forks are appended here, at the End of Time: 561 CompileLog::finish_log(xs->out()); // write compile logging, if any, now 562 563 xs->done("hotspot_log"); 564 xs->flush(); 565 566 fileStream* file = _log_file; 567 _log_file = NULL; 568 569 delete _outer_xmlStream; 570 _outer_xmlStream = NULL; 571 572 file->flush(); 573 delete file; 574 } 575 576 void defaultStream::finish_log_on_error(char *buf, int buflen) { 577 xmlStream* xs = _outer_xmlStream; 578 579 if (xs && xs->out()) { 580 581 xs->done_raw("tty"); 582 583 // Other log forks are appended here, at the End of Time: 584 CompileLog::finish_log_on_error(xs->out(), buf, buflen); // write compile logging, if any, now 585 586 xs->done_raw("hotspot_log"); 587 xs->flush(); 588 589 fileStream* file = _log_file; 590 _log_file = NULL; 591 _outer_xmlStream = NULL; 592 593 if (file) { 594 file->flush(); 595 596 // Can't delete or close the file because delete and fclose aren't 597 // async-safe. We are about to die, so leave it to the kernel. 598 // delete file; 599 } 600 } 601 } 602 603 intx defaultStream::hold(intx writer_id) { 604 bool has_log = has_log_file(); // check before locking 605 if (// impossible, but who knows? 606 writer_id == NO_WRITER || 607 608 // bootstrap problem 609 tty_lock == NULL || 610 611 // can't grab a lock or call Thread::current() if TLS isn't initialized 612 ThreadLocalStorage::thread() == NULL || 613 614 // developer hook 615 !SerializeVMOutput || 616 617 // VM already unhealthy 618 is_error_reported() || 619 620 // safepoint == global lock (for VM only) 621 (SafepointSynchronize::is_synchronizing() && 622 Thread::current()->is_VM_thread()) 623 ) { 624 // do not attempt to lock unless we know the thread and the VM is healthy 625 return NO_WRITER; 626 } 627 if (_writer == writer_id) { 628 // already held, no need to re-grab the lock 629 return NO_WRITER; 630 } 631 tty_lock->lock_without_safepoint_check(); 632 // got the lock 633 if (writer_id != _last_writer) { 634 if (has_log) { 635 _log_file->bol(); 636 // output a hint where this output is coming from: 637 _log_file->print_cr("<writer thread='"INTX_FORMAT"'/>", writer_id); 638 } 639 _last_writer = writer_id; 640 } 641 _writer = writer_id; 642 return writer_id; 643 } 644 645 void defaultStream::release(intx holder) { 646 if (holder == NO_WRITER) { 647 // nothing to release: either a recursive lock, or we scribbled (too bad) 648 return; 649 } 650 if (_writer != holder) { 651 return; // already unlocked, perhaps via break_tty_lock_for_safepoint 652 } 653 _writer = NO_WRITER; 654 tty_lock->unlock(); 655 } 656 657 658 // Yuck: jio_print does not accept char*/len. 659 static void call_jio_print(const char* s, size_t len) { 660 char buffer[O_BUFLEN+100]; 661 if (len > sizeof(buffer)-1) { 662 warning("increase O_BUFLEN in ostream.cpp -- output truncated"); 663 len = sizeof(buffer)-1; 664 } 665 strncpy(buffer, s, len); 666 buffer[len] = '\0'; 667 jio_print(buffer); 668 } 669 670 671 void defaultStream::write(const char* s, size_t len) { 672 intx thread_id = os::current_thread_id(); 673 intx holder = hold(thread_id); 674 675 if (DisplayVMOutput && 676 (_outer_xmlStream == NULL || !_outer_xmlStream->inside_attrs())) { 677 // print to output stream. It can be redirected by a vfprintf hook 678 if (s[len] == '\0') { 679 jio_print(s); 680 } else { 681 call_jio_print(s, len); 682 } 683 } 684 685 // print to log file 686 if (has_log_file()) { 687 int nl0 = _newlines; 688 xmlTextStream::write(s, len); 689 // flush the log file too, if there were any newlines 690 if (nl0 != _newlines){ 691 flush(); 692 } 693 } else { 694 update_position(s, len); 695 } 696 697 release(holder); 698 } 699 700 intx ttyLocker::hold_tty() { 701 if (defaultStream::instance == NULL) return defaultStream::NO_WRITER; 702 intx thread_id = os::current_thread_id(); 703 return defaultStream::instance->hold(thread_id); 704 } 705 706 void ttyLocker::release_tty(intx holder) { 707 if (holder == defaultStream::NO_WRITER) return; 708 defaultStream::instance->release(holder); 709 } 710 711 bool ttyLocker::release_tty_if_locked() { 712 intx thread_id = os::current_thread_id(); 713 if (defaultStream::instance->writer() == thread_id) { 714 // release the lock and return true so callers know if was 715 // previously held. 716 release_tty(thread_id); 717 return true; 718 } 719 return false; 720 } 721 722 void ttyLocker::break_tty_lock_for_safepoint(intx holder) { 723 if (defaultStream::instance != NULL && 724 defaultStream::instance->writer() == holder) { 725 if (xtty != NULL) { 726 xtty->print_cr("<!-- safepoint while printing -->"); 727 } 728 defaultStream::instance->release(holder); 729 } 730 // (else there was no lock to break) 731 } 732 733 void ostream_init() { 734 if (defaultStream::instance == NULL) { 735 defaultStream::instance = new(ResourceObj::C_HEAP) defaultStream(); 736 tty = defaultStream::instance; 737 738 // We want to ensure that time stamps in GC logs consider time 0 739 // the time when the JVM is initialized, not the first time we ask 740 // for a time stamp. So, here, we explicitly update the time stamp 741 // of tty. 742 tty->time_stamp().update_to(1); 743 } 744 } 745 746 void ostream_init_log() { 747 // For -Xloggc:<file> option - called in runtime/thread.cpp 748 // Note : this must be called AFTER ostream_init() 749 750 gclog_or_tty = tty; // default to tty 751 if (Arguments::gc_log_filename() != NULL) { 752 fileStream * gclog = new(ResourceObj::C_HEAP) 753 fileStream(Arguments::gc_log_filename()); 754 if (gclog->is_open()) { 755 // now we update the time stamp of the GC log to be synced up 756 // with tty. 757 gclog->time_stamp().update_to(tty->time_stamp().ticks()); 758 gclog_or_tty = gclog; 759 } 760 } 761 762 // If we haven't lazily initialized the logfile yet, do it now, 763 // to avoid the possibility of lazy initialization during a VM 764 // crash, which can affect the stability of the fatal error handler. 765 defaultStream::instance->has_log_file(); 766 } 767 768 // ostream_exit() is called during normal VM exit to finish log files, flush 769 // output and free resource. 770 void ostream_exit() { 771 static bool ostream_exit_called = false; 772 if (ostream_exit_called) return; 773 ostream_exit_called = true; 774 if (gclog_or_tty != tty) { 775 delete gclog_or_tty; 776 } 777 { 778 // we temporaly disable PrintMallocFree here 779 // as otherwise it'll lead to using of almost deleted 780 // tty or defaultStream::instance in logging facility 781 // of HeapFree(), see 6391258 782 DEBUG_ONLY(FlagSetting fs(PrintMallocFree, false);) 783 if (tty != defaultStream::instance) { 784 delete tty; 785 } 786 if (defaultStream::instance != NULL) { 787 delete defaultStream::instance; 788 } 789 } 790 tty = NULL; 791 xtty = NULL; 792 gclog_or_tty = NULL; 793 defaultStream::instance = NULL; 794 } 795 796 // ostream_abort() is called by os::abort() when VM is about to die. 797 void ostream_abort() { 798 // Here we can't delete gclog_or_tty and tty, just flush their output 799 if (gclog_or_tty) gclog_or_tty->flush(); 800 if (tty) tty->flush(); 801 802 if (defaultStream::instance != NULL) { 803 static char buf[4096]; 804 defaultStream::instance->finish_log_on_error(buf, sizeof(buf)); 805 } 806 } 807 808 staticBufferStream::staticBufferStream(char* buffer, size_t buflen, 809 outputStream *outer_stream) { 810 _buffer = buffer; 811 _buflen = buflen; 812 _outer_stream = outer_stream; 813 } 814 815 void staticBufferStream::write(const char* c, size_t len) { 816 _outer_stream->print_raw(c, (int)len); 817 } 818 819 void staticBufferStream::flush() { 820 _outer_stream->flush(); 821 } 822 823 void staticBufferStream::print(const char* format, ...) { 824 va_list ap; 825 va_start(ap, format); 826 size_t len; 827 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, false, len); 828 write(str, len); 829 va_end(ap); 830 } 831 832 void staticBufferStream::print_cr(const char* format, ...) { 833 va_list ap; 834 va_start(ap, format); 835 size_t len; 836 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, true, len); 837 write(str, len); 838 va_end(ap); 839 } 840 841 void staticBufferStream::vprint(const char *format, va_list argptr) { 842 size_t len; 843 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, false, len); 844 write(str, len); 845 } 846 847 void staticBufferStream::vprint_cr(const char* format, va_list argptr) { 848 size_t len; 849 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, true, len); 850 write(str, len); 851 } 852 853 bufferedStream::bufferedStream(size_t initial_size, size_t bufmax) : outputStream() { 854 buffer_length = initial_size; 855 buffer = NEW_C_HEAP_ARRAY(char, buffer_length); 856 buffer_pos = 0; 857 buffer_fixed = false; 858 buffer_max = bufmax; 859 } 860 861 bufferedStream::bufferedStream(char* fixed_buffer, size_t fixed_buffer_size, size_t bufmax) : outputStream() { 862 buffer_length = fixed_buffer_size; 863 buffer = fixed_buffer; 864 buffer_pos = 0; 865 buffer_fixed = true; 866 buffer_max = bufmax; 867 } 868 869 void bufferedStream::write(const char* s, size_t len) { 870 871 if(buffer_pos + len > buffer_max) { 872 flush(); 873 } 874 875 size_t end = buffer_pos + len; 876 if (end >= buffer_length) { 877 if (buffer_fixed) { 878 // if buffer cannot resize, silently truncate 879 len = buffer_length - buffer_pos - 1; 880 } else { 881 // For small overruns, double the buffer. For larger ones, 882 // increase to the requested size. 883 if (end < buffer_length * 2) { 884 end = buffer_length * 2; 885 } 886 buffer = REALLOC_C_HEAP_ARRAY(char, buffer, end); 887 buffer_length = end; 888 } 889 } 890 memcpy(buffer + buffer_pos, s, len); 891 buffer_pos += len; 892 update_position(s, len); 893 } 894 895 char* bufferedStream::as_string() { 896 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1); 897 strncpy(copy, buffer, buffer_pos); 898 copy[buffer_pos] = 0; // terminating null 899 return copy; 900 } 901 902 bufferedStream::~bufferedStream() { 903 if (!buffer_fixed) { 904 FREE_C_HEAP_ARRAY(char, buffer); 905 } 906 } 907 908 #ifndef PRODUCT 909 910 #if defined(SOLARIS) || defined(LINUX) 911 #include <sys/types.h> 912 #include <sys/socket.h> 913 #include <netinet/in.h> 914 #include <arpa/inet.h> 915 #endif 916 917 // Network access 918 networkStream::networkStream() : bufferedStream(1024*10, 1024*10) { 919 920 _socket = -1; 921 922 int result = os::socket(AF_INET, SOCK_STREAM, 0); 923 if (result <= 0) { 924 assert(false, "Socket could not be created!"); 925 } else { 926 _socket = result; 927 } 928 } 929 930 int networkStream::read(char *buf, size_t len) { 931 return os::recv(_socket, buf, (int)len, 0); 932 } 933 934 void networkStream::flush() { 935 if (size() != 0) { 936 int result = os::raw_send(_socket, (char *)base(), (int)size(), 0); 937 assert(result != -1, "connection error"); 938 assert(result == (int)size(), "didn't send enough data"); 939 } 940 reset(); 941 } 942 943 networkStream::~networkStream() { 944 close(); 945 } 946 947 void networkStream::close() { 948 if (_socket != -1) { 949 flush(); 950 os::socket_close(_socket); 951 _socket = -1; 952 } 953 } 954 955 bool networkStream::connect(const char *ip, short port) { 956 957 struct sockaddr_in server; 958 server.sin_family = AF_INET; 959 server.sin_port = htons(port); 960 961 server.sin_addr.s_addr = inet_addr(ip); 962 if (server.sin_addr.s_addr == (uint32_t)-1) { 963 struct hostent* host = os::get_host_by_name((char*)ip); 964 if (host != NULL) { 965 memcpy(&server.sin_addr, host->h_addr_list[0], host->h_length); 966 } else { 967 return false; 968 } 969 } 970 971 972 int result = os::connect(_socket, (struct sockaddr*)&server, sizeof(struct sockaddr_in)); 973 return (result >= 0); 974 } 975 976 #endif