ostream.cpp revision 1879:f95d63e2154a
1/* 2 * Copyright (c) 1997, 2010, 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 "runtime/hpi.hpp" 30#include "utilities/defaultStream.hpp" 31#include "utilities/ostream.hpp" 32#include "utilities/top.hpp" 33#include "utilities/xmlstream.hpp" 34#ifdef TARGET_OS_FAMILY_linux 35# include "hpi_linux.hpp" 36# include "os_linux.inline.hpp" 37#endif 38#ifdef TARGET_OS_FAMILY_solaris 39# include "hpi_solaris.hpp" 40# include "os_solaris.inline.hpp" 41#endif 42#ifdef TARGET_OS_FAMILY_windows 43# include "hpi_windows.hpp" 44# include "os_windows.inline.hpp" 45#endif 46 47extern "C" void jio_print(const char* s); // Declarationtion of jvm method 48 49outputStream::outputStream(int width) { 50 _width = width; 51 _position = 0; 52 _newlines = 0; 53 _precount = 0; 54 _indentation = 0; 55} 56 57outputStream::outputStream(int width, bool has_time_stamps) { 58 _width = width; 59 _position = 0; 60 _newlines = 0; 61 _precount = 0; 62 _indentation = 0; 63 if (has_time_stamps) _stamp.update(); 64} 65 66void outputStream::update_position(const char* s, size_t len) { 67 for (size_t i = 0; i < len; i++) { 68 char ch = s[i]; 69 if (ch == '\n') { 70 _newlines += 1; 71 _precount += _position + 1; 72 _position = 0; 73 } else if (ch == '\t') { 74 int tw = 8 - (_position & 7); 75 _position += tw; 76 _precount -= tw-1; // invariant: _precount + _position == total count 77 } else { 78 _position += 1; 79 } 80 } 81} 82 83// Execute a vsprintf, using the given buffer if necessary. 84// Return a pointer to the formatted string. 85const char* outputStream::do_vsnprintf(char* buffer, size_t buflen, 86 const char* format, va_list ap, 87 bool add_cr, 88 size_t& result_len) { 89 const char* result; 90 if (add_cr) buflen--; 91 if (!strchr(format, '%')) { 92 // constant format string 93 result = format; 94 result_len = strlen(result); 95 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate 96 } else if (format[0] == '%' && format[1] == 's' && format[2] == '\0') { 97 // trivial copy-through format string 98 result = va_arg(ap, const char*); 99 result_len = strlen(result); 100 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate 101 } else if (vsnprintf(buffer, buflen, format, ap) >= 0) { 102 result = buffer; 103 result_len = strlen(result); 104 } else { 105 DEBUG_ONLY(warning("increase O_BUFLEN in ostream.hpp -- output truncated");) 106 result = buffer; 107 result_len = buflen - 1; 108 buffer[result_len] = 0; 109 } 110 if (add_cr) { 111 if (result != buffer) { 112 strncpy(buffer, result, buflen); 113 result = buffer; 114 } 115 buffer[result_len++] = '\n'; 116 buffer[result_len] = 0; 117 } 118 return result; 119} 120 121void outputStream::print(const char* format, ...) { 122 char buffer[O_BUFLEN]; 123 va_list ap; 124 va_start(ap, format); 125 size_t len; 126 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, false, len); 127 write(str, len); 128 va_end(ap); 129} 130 131void outputStream::print_cr(const char* format, ...) { 132 char buffer[O_BUFLEN]; 133 va_list ap; 134 va_start(ap, format); 135 size_t len; 136 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, true, len); 137 write(str, len); 138 va_end(ap); 139} 140 141void outputStream::vprint(const char *format, va_list argptr) { 142 char buffer[O_BUFLEN]; 143 size_t len; 144 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, false, len); 145 write(str, len); 146} 147 148void outputStream::vprint_cr(const char* format, va_list argptr) { 149 char buffer[O_BUFLEN]; 150 size_t len; 151 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, true, len); 152 write(str, len); 153} 154 155void outputStream::fill_to(int col) { 156 int need_fill = col - position(); 157 sp(need_fill); 158} 159 160void outputStream::move_to(int col, int slop, int min_space) { 161 if (position() >= col + slop) 162 cr(); 163 int need_fill = col - position(); 164 if (need_fill < min_space) 165 need_fill = min_space; 166 sp(need_fill); 167} 168 169void outputStream::put(char ch) { 170 assert(ch != 0, "please fix call site"); 171 char buf[] = { ch, '\0' }; 172 write(buf, 1); 173} 174 175#define SP_USE_TABS false 176 177void outputStream::sp(int count) { 178 if (count < 0) return; 179 if (SP_USE_TABS && count >= 8) { 180 int target = position() + count; 181 while (count >= 8) { 182 this->write("\t", 1); 183 count -= 8; 184 } 185 count = target - position(); 186 } 187 while (count > 0) { 188 int nw = (count > 8) ? 8 : count; 189 this->write(" ", nw); 190 count -= nw; 191 } 192} 193 194void outputStream::cr() { 195 this->write("\n", 1); 196} 197 198void outputStream::stamp() { 199 if (! _stamp.is_updated()) { 200 _stamp.update(); // start at 0 on first call to stamp() 201 } 202 203 // outputStream::stamp() may get called by ostream_abort(), use snprintf 204 // to avoid allocating large stack buffer in print(). 205 char buf[40]; 206 jio_snprintf(buf, sizeof(buf), "%.3f", _stamp.seconds()); 207 print_raw(buf); 208} 209 210void outputStream::stamp(bool guard, 211 const char* prefix, 212 const char* suffix) { 213 if (!guard) { 214 return; 215 } 216 print_raw(prefix); 217 stamp(); 218 print_raw(suffix); 219} 220 221void outputStream::date_stamp(bool guard, 222 const char* prefix, 223 const char* suffix) { 224 if (!guard) { 225 return; 226 } 227 print_raw(prefix); 228 static const char error_time[] = "yyyy-mm-ddThh:mm:ss.mmm+zzzz"; 229 static const int buffer_length = 32; 230 char buffer[buffer_length]; 231 const char* iso8601_result = os::iso8601_time(buffer, buffer_length); 232 if (iso8601_result != NULL) { 233 print_raw(buffer); 234 } else { 235 print_raw(error_time); 236 } 237 print_raw(suffix); 238 return; 239} 240 241void outputStream::indent() { 242 while (_position < _indentation) sp(); 243} 244 245void outputStream::print_jlong(jlong value) { 246 // N.B. Same as INT64_FORMAT 247 print(os::jlong_format_specifier(), value); 248} 249 250void outputStream::print_julong(julong value) { 251 // N.B. Same as UINT64_FORMAT 252 print(os::julong_format_specifier(), value); 253} 254 255stringStream::stringStream(size_t initial_size) : outputStream() { 256 buffer_length = initial_size; 257 buffer = NEW_RESOURCE_ARRAY(char, buffer_length); 258 buffer_pos = 0; 259 buffer_fixed = false; 260} 261 262// useful for output to fixed chunks of memory, such as performance counters 263stringStream::stringStream(char* fixed_buffer, size_t fixed_buffer_size) : outputStream() { 264 buffer_length = fixed_buffer_size; 265 buffer = fixed_buffer; 266 buffer_pos = 0; 267 buffer_fixed = true; 268} 269 270void stringStream::write(const char* s, size_t len) { 271 size_t write_len = len; // number of non-null bytes to write 272 size_t end = buffer_pos + len + 1; // position after write and final '\0' 273 if (end > buffer_length) { 274 if (buffer_fixed) { 275 // if buffer cannot resize, silently truncate 276 end = buffer_length; 277 write_len = end - buffer_pos - 1; // leave room for the final '\0' 278 } else { 279 // For small overruns, double the buffer. For larger ones, 280 // increase to the requested size. 281 if (end < buffer_length * 2) { 282 end = buffer_length * 2; 283 } 284 char* oldbuf = buffer; 285 buffer = NEW_RESOURCE_ARRAY(char, end); 286 strncpy(buffer, oldbuf, buffer_pos); 287 buffer_length = end; 288 } 289 } 290 // invariant: buffer is always null-terminated 291 guarantee(buffer_pos + write_len + 1 <= buffer_length, "stringStream oob"); 292 buffer[buffer_pos + write_len] = 0; 293 strncpy(buffer + buffer_pos, s, write_len); 294 buffer_pos += write_len; 295 296 // Note that the following does not depend on write_len. 297 // This means that position and count get updated 298 // even when overflow occurs. 299 update_position(s, len); 300} 301 302char* stringStream::as_string() { 303 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1); 304 strncpy(copy, buffer, buffer_pos); 305 copy[buffer_pos] = 0; // terminating null 306 return copy; 307} 308 309stringStream::~stringStream() {} 310 311xmlStream* xtty; 312outputStream* tty; 313outputStream* gclog_or_tty; 314extern Mutex* tty_lock; 315 316fileStream::fileStream(const char* file_name) { 317 _file = fopen(file_name, "w"); 318 _need_close = true; 319} 320 321void fileStream::write(const char* s, size_t len) { 322 if (_file != NULL) { 323 // Make an unused local variable to avoid warning from gcc 4.x compiler. 324 size_t count = fwrite(s, 1, len, _file); 325 } 326 update_position(s, len); 327} 328 329fileStream::~fileStream() { 330 if (_file != NULL) { 331 if (_need_close) fclose(_file); 332 _file = NULL; 333 } 334} 335 336void fileStream::flush() { 337 fflush(_file); 338} 339 340fdStream::fdStream(const char* file_name) { 341 _fd = open(file_name, O_WRONLY | O_CREAT | O_TRUNC, 0666); 342 _need_close = true; 343} 344 345fdStream::~fdStream() { 346 if (_fd != -1) { 347 if (_need_close) close(_fd); 348 _fd = -1; 349 } 350} 351 352void fdStream::write(const char* s, size_t len) { 353 if (_fd != -1) { 354 // Make an unused local variable to avoid warning from gcc 4.x compiler. 355 size_t count = ::write(_fd, s, (int)len); 356 } 357 update_position(s, len); 358} 359 360defaultStream* defaultStream::instance = NULL; 361int defaultStream::_output_fd = 1; 362int defaultStream::_error_fd = 2; 363FILE* defaultStream::_output_stream = stdout; 364FILE* defaultStream::_error_stream = stderr; 365 366#define LOG_MAJOR_VERSION 160 367#define LOG_MINOR_VERSION 1 368 369void defaultStream::init() { 370 _inited = true; 371 if (LogVMOutput || LogCompilation) { 372 init_log(); 373 } 374} 375 376bool defaultStream::has_log_file() { 377 // lazily create log file (at startup, LogVMOutput is false even 378 // if +LogVMOutput is used, because the flags haven't been parsed yet) 379 // For safer printing during fatal error handling, do not init logfile 380 // if a VM error has been reported. 381 if (!_inited && !is_error_reported()) init(); 382 return _log_file != NULL; 383} 384 385static const char* make_log_name(const char* log_name, const char* force_directory) { 386 const char* basename = log_name; 387 char file_sep = os::file_separator()[0]; 388 const char* cp; 389 for (cp = log_name; *cp != '\0'; cp++) { 390 if (*cp == '/' || *cp == file_sep) { 391 basename = cp+1; 392 } 393 } 394 const char* nametail = log_name; 395 396 // Compute buffer length 397 size_t buffer_length; 398 if (force_directory != NULL) { 399 buffer_length = strlen(force_directory) + strlen(os::file_separator()) + 400 strlen(basename) + 1; 401 } else { 402 buffer_length = strlen(log_name) + 1; 403 } 404 405 const char* star = strchr(basename, '*'); 406 int star_pos = (star == NULL) ? -1 : (star - nametail); 407 408 char pid[32]; 409 if (star_pos >= 0) { 410 jio_snprintf(pid, sizeof(pid), "%u", os::current_process_id()); 411 buffer_length += strlen(pid); 412 } 413 414 // Create big enough buffer. 415 char *buf = NEW_C_HEAP_ARRAY(char, buffer_length); 416 417 strcpy(buf, ""); 418 if (force_directory != NULL) { 419 strcat(buf, force_directory); 420 strcat(buf, os::file_separator()); 421 nametail = basename; // completely skip directory prefix 422 } 423 424 if (star_pos >= 0) { 425 // convert foo*bar.log to foo123bar.log 426 int buf_pos = (int) strlen(buf); 427 strncpy(&buf[buf_pos], nametail, star_pos); 428 strcpy(&buf[buf_pos + star_pos], pid); 429 nametail += star_pos + 1; // skip prefix and star 430 } 431 432 strcat(buf, nametail); // append rest of name, or all of name 433 return buf; 434} 435 436void defaultStream::init_log() { 437 // %%% Need a MutexLocker? 438 const char* log_name = LogFile != NULL ? LogFile : "hotspot.log"; 439 const char* try_name = make_log_name(log_name, NULL); 440 fileStream* file = new(ResourceObj::C_HEAP) fileStream(try_name); 441 if (!file->is_open()) { 442 // Try again to open the file. 443 char warnbuf[O_BUFLEN*2]; 444 jio_snprintf(warnbuf, sizeof(warnbuf), 445 "Warning: Cannot open log file: %s\n", try_name); 446 // Note: This feature is for maintainer use only. No need for L10N. 447 jio_print(warnbuf); 448 FREE_C_HEAP_ARRAY(char, try_name); 449 try_name = make_log_name("hs_pid*.log", os::get_temp_directory()); 450 jio_snprintf(warnbuf, sizeof(warnbuf), 451 "Warning: Forcing option -XX:LogFile=%s\n", try_name); 452 jio_print(warnbuf); 453 delete file; 454 file = new(ResourceObj::C_HEAP) fileStream(try_name); 455 FREE_C_HEAP_ARRAY(char, try_name); 456 } 457 if (file->is_open()) { 458 _log_file = file; 459 xmlStream* xs = new(ResourceObj::C_HEAP) xmlStream(file); 460 _outer_xmlStream = xs; 461 if (this == tty) xtty = xs; 462 // Write XML header. 463 xs->print_cr("<?xml version='1.0' encoding='UTF-8'?>"); 464 // (For now, don't bother to issue a DTD for this private format.) 465 jlong time_ms = os::javaTimeMillis() - tty->time_stamp().milliseconds(); 466 // %%% Should be: jlong time_ms = os::start_time_milliseconds(), if 467 // we ever get round to introduce that method on the os class 468 xs->head("hotspot_log version='%d %d'" 469 " process='%d' time_ms='"INT64_FORMAT"'", 470 LOG_MAJOR_VERSION, LOG_MINOR_VERSION, 471 os::current_process_id(), time_ms); 472 // Write VM version header immediately. 473 xs->head("vm_version"); 474 xs->head("name"); xs->text("%s", VM_Version::vm_name()); xs->cr(); 475 xs->tail("name"); 476 xs->head("release"); xs->text("%s", VM_Version::vm_release()); xs->cr(); 477 xs->tail("release"); 478 xs->head("info"); xs->text("%s", VM_Version::internal_vm_info_string()); xs->cr(); 479 xs->tail("info"); 480 xs->tail("vm_version"); 481 // Record information about the command-line invocation. 482 xs->head("vm_arguments"); // Cf. Arguments::print_on() 483 if (Arguments::num_jvm_flags() > 0) { 484 xs->head("flags"); 485 Arguments::print_jvm_flags_on(xs->text()); 486 xs->tail("flags"); 487 } 488 if (Arguments::num_jvm_args() > 0) { 489 xs->head("args"); 490 Arguments::print_jvm_args_on(xs->text()); 491 xs->tail("args"); 492 } 493 if (Arguments::java_command() != NULL) { 494 xs->head("command"); xs->text()->print_cr("%s", Arguments::java_command()); 495 xs->tail("command"); 496 } 497 if (Arguments::sun_java_launcher() != NULL) { 498 xs->head("launcher"); xs->text()->print_cr("%s", Arguments::sun_java_launcher()); 499 xs->tail("launcher"); 500 } 501 if (Arguments::system_properties() != NULL) { 502 xs->head("properties"); 503 // Print it as a java-style property list. 504 // System properties don't generally contain newlines, so don't bother with unparsing. 505 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { 506 xs->text()->print_cr("%s=%s", p->key(), p->value()); 507 } 508 xs->tail("properties"); 509 } 510 xs->tail("vm_arguments"); 511 // tty output per se is grouped under the <tty>...</tty> element. 512 xs->head("tty"); 513 // All further non-markup text gets copied to the tty: 514 xs->_text = this; // requires friend declaration! 515 } else { 516 delete(file); 517 // and leave xtty as NULL 518 LogVMOutput = false; 519 DisplayVMOutput = true; 520 LogCompilation = false; 521 } 522} 523 524// finish_log() is called during normal VM shutdown. finish_log_on_error() is 525// called by ostream_abort() after a fatal error. 526// 527void defaultStream::finish_log() { 528 xmlStream* xs = _outer_xmlStream; 529 xs->done("tty"); 530 531 // Other log forks are appended here, at the End of Time: 532 CompileLog::finish_log(xs->out()); // write compile logging, if any, now 533 534 xs->done("hotspot_log"); 535 xs->flush(); 536 537 fileStream* file = _log_file; 538 _log_file = NULL; 539 540 delete _outer_xmlStream; 541 _outer_xmlStream = NULL; 542 543 file->flush(); 544 delete file; 545} 546 547void defaultStream::finish_log_on_error(char *buf, int buflen) { 548 xmlStream* xs = _outer_xmlStream; 549 550 if (xs && xs->out()) { 551 552 xs->done_raw("tty"); 553 554 // Other log forks are appended here, at the End of Time: 555 CompileLog::finish_log_on_error(xs->out(), buf, buflen); // write compile logging, if any, now 556 557 xs->done_raw("hotspot_log"); 558 xs->flush(); 559 560 fileStream* file = _log_file; 561 _log_file = NULL; 562 _outer_xmlStream = NULL; 563 564 if (file) { 565 file->flush(); 566 567 // Can't delete or close the file because delete and fclose aren't 568 // async-safe. We are about to die, so leave it to the kernel. 569 // delete file; 570 } 571 } 572} 573 574intx defaultStream::hold(intx writer_id) { 575 bool has_log = has_log_file(); // check before locking 576 if (// impossible, but who knows? 577 writer_id == NO_WRITER || 578 579 // bootstrap problem 580 tty_lock == NULL || 581 582 // can't grab a lock or call Thread::current() if TLS isn't initialized 583 ThreadLocalStorage::thread() == NULL || 584 585 // developer hook 586 !SerializeVMOutput || 587 588 // VM already unhealthy 589 is_error_reported() || 590 591 // safepoint == global lock (for VM only) 592 (SafepointSynchronize::is_synchronizing() && 593 Thread::current()->is_VM_thread()) 594 ) { 595 // do not attempt to lock unless we know the thread and the VM is healthy 596 return NO_WRITER; 597 } 598 if (_writer == writer_id) { 599 // already held, no need to re-grab the lock 600 return NO_WRITER; 601 } 602 tty_lock->lock_without_safepoint_check(); 603 // got the lock 604 if (writer_id != _last_writer) { 605 if (has_log) { 606 _log_file->bol(); 607 // output a hint where this output is coming from: 608 _log_file->print_cr("<writer thread='"INTX_FORMAT"'/>", writer_id); 609 } 610 _last_writer = writer_id; 611 } 612 _writer = writer_id; 613 return writer_id; 614} 615 616void defaultStream::release(intx holder) { 617 if (holder == NO_WRITER) { 618 // nothing to release: either a recursive lock, or we scribbled (too bad) 619 return; 620 } 621 if (_writer != holder) { 622 return; // already unlocked, perhaps via break_tty_lock_for_safepoint 623 } 624 _writer = NO_WRITER; 625 tty_lock->unlock(); 626} 627 628 629// Yuck: jio_print does not accept char*/len. 630static void call_jio_print(const char* s, size_t len) { 631 char buffer[O_BUFLEN+100]; 632 if (len > sizeof(buffer)-1) { 633 warning("increase O_BUFLEN in ostream.cpp -- output truncated"); 634 len = sizeof(buffer)-1; 635 } 636 strncpy(buffer, s, len); 637 buffer[len] = '\0'; 638 jio_print(buffer); 639} 640 641 642void defaultStream::write(const char* s, size_t len) { 643 intx thread_id = os::current_thread_id(); 644 intx holder = hold(thread_id); 645 646 if (DisplayVMOutput && 647 (_outer_xmlStream == NULL || !_outer_xmlStream->inside_attrs())) { 648 // print to output stream. It can be redirected by a vfprintf hook 649 if (s[len] == '\0') { 650 jio_print(s); 651 } else { 652 call_jio_print(s, len); 653 } 654 } 655 656 // print to log file 657 if (has_log_file()) { 658 int nl0 = _newlines; 659 xmlTextStream::write(s, len); 660 // flush the log file too, if there were any newlines 661 if (nl0 != _newlines){ 662 flush(); 663 } 664 } else { 665 update_position(s, len); 666 } 667 668 release(holder); 669} 670 671intx ttyLocker::hold_tty() { 672 if (defaultStream::instance == NULL) return defaultStream::NO_WRITER; 673 intx thread_id = os::current_thread_id(); 674 return defaultStream::instance->hold(thread_id); 675} 676 677void ttyLocker::release_tty(intx holder) { 678 if (holder == defaultStream::NO_WRITER) return; 679 defaultStream::instance->release(holder); 680} 681 682void ttyLocker::break_tty_lock_for_safepoint(intx holder) { 683 if (defaultStream::instance != NULL && 684 defaultStream::instance->writer() == holder) { 685 if (xtty != NULL) { 686 xtty->print_cr("<!-- safepoint while printing -->"); 687 } 688 defaultStream::instance->release(holder); 689 } 690 // (else there was no lock to break) 691} 692 693void ostream_init() { 694 if (defaultStream::instance == NULL) { 695 defaultStream::instance = new(ResourceObj::C_HEAP) defaultStream(); 696 tty = defaultStream::instance; 697 698 // We want to ensure that time stamps in GC logs consider time 0 699 // the time when the JVM is initialized, not the first time we ask 700 // for a time stamp. So, here, we explicitly update the time stamp 701 // of tty. 702 tty->time_stamp().update_to(1); 703 } 704} 705 706void ostream_init_log() { 707 // For -Xloggc:<file> option - called in runtime/thread.cpp 708 // Note : this must be called AFTER ostream_init() 709 710 gclog_or_tty = tty; // default to tty 711 if (Arguments::gc_log_filename() != NULL) { 712 fileStream * gclog = new(ResourceObj::C_HEAP) 713 fileStream(Arguments::gc_log_filename()); 714 if (gclog->is_open()) { 715 // now we update the time stamp of the GC log to be synced up 716 // with tty. 717 gclog->time_stamp().update_to(tty->time_stamp().ticks()); 718 gclog_or_tty = gclog; 719 } 720 } 721 722 // If we haven't lazily initialized the logfile yet, do it now, 723 // to avoid the possibility of lazy initialization during a VM 724 // crash, which can affect the stability of the fatal error handler. 725 defaultStream::instance->has_log_file(); 726} 727 728// ostream_exit() is called during normal VM exit to finish log files, flush 729// output and free resource. 730void ostream_exit() { 731 static bool ostream_exit_called = false; 732 if (ostream_exit_called) return; 733 ostream_exit_called = true; 734 if (gclog_or_tty != tty) { 735 delete gclog_or_tty; 736 } 737 { 738 // we temporaly disable PrintMallocFree here 739 // as otherwise it'll lead to using of almost deleted 740 // tty or defaultStream::instance in logging facility 741 // of HeapFree(), see 6391258 742 DEBUG_ONLY(FlagSetting fs(PrintMallocFree, false);) 743 if (tty != defaultStream::instance) { 744 delete tty; 745 } 746 if (defaultStream::instance != NULL) { 747 delete defaultStream::instance; 748 } 749 } 750 tty = NULL; 751 xtty = NULL; 752 gclog_or_tty = NULL; 753 defaultStream::instance = NULL; 754} 755 756// ostream_abort() is called by os::abort() when VM is about to die. 757void ostream_abort() { 758 // Here we can't delete gclog_or_tty and tty, just flush their output 759 if (gclog_or_tty) gclog_or_tty->flush(); 760 if (tty) tty->flush(); 761 762 if (defaultStream::instance != NULL) { 763 static char buf[4096]; 764 defaultStream::instance->finish_log_on_error(buf, sizeof(buf)); 765 } 766} 767 768staticBufferStream::staticBufferStream(char* buffer, size_t buflen, 769 outputStream *outer_stream) { 770 _buffer = buffer; 771 _buflen = buflen; 772 _outer_stream = outer_stream; 773} 774 775void staticBufferStream::write(const char* c, size_t len) { 776 _outer_stream->print_raw(c, (int)len); 777} 778 779void staticBufferStream::flush() { 780 _outer_stream->flush(); 781} 782 783void staticBufferStream::print(const char* format, ...) { 784 va_list ap; 785 va_start(ap, format); 786 size_t len; 787 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, false, len); 788 write(str, len); 789 va_end(ap); 790} 791 792void staticBufferStream::print_cr(const char* format, ...) { 793 va_list ap; 794 va_start(ap, format); 795 size_t len; 796 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, true, len); 797 write(str, len); 798 va_end(ap); 799} 800 801void staticBufferStream::vprint(const char *format, va_list argptr) { 802 size_t len; 803 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, false, len); 804 write(str, len); 805} 806 807void staticBufferStream::vprint_cr(const char* format, va_list argptr) { 808 size_t len; 809 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, true, len); 810 write(str, len); 811} 812 813bufferedStream::bufferedStream(size_t initial_size, size_t bufmax) : outputStream() { 814 buffer_length = initial_size; 815 buffer = NEW_C_HEAP_ARRAY(char, buffer_length); 816 buffer_pos = 0; 817 buffer_fixed = false; 818 buffer_max = bufmax; 819} 820 821bufferedStream::bufferedStream(char* fixed_buffer, size_t fixed_buffer_size, size_t bufmax) : outputStream() { 822 buffer_length = fixed_buffer_size; 823 buffer = fixed_buffer; 824 buffer_pos = 0; 825 buffer_fixed = true; 826 buffer_max = bufmax; 827} 828 829void bufferedStream::write(const char* s, size_t len) { 830 831 if(buffer_pos + len > buffer_max) { 832 flush(); 833 } 834 835 size_t end = buffer_pos + len; 836 if (end >= buffer_length) { 837 if (buffer_fixed) { 838 // if buffer cannot resize, silently truncate 839 len = buffer_length - buffer_pos - 1; 840 } else { 841 // For small overruns, double the buffer. For larger ones, 842 // increase to the requested size. 843 if (end < buffer_length * 2) { 844 end = buffer_length * 2; 845 } 846 buffer = REALLOC_C_HEAP_ARRAY(char, buffer, end); 847 buffer_length = end; 848 } 849 } 850 memcpy(buffer + buffer_pos, s, len); 851 buffer_pos += len; 852 update_position(s, len); 853} 854 855char* bufferedStream::as_string() { 856 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1); 857 strncpy(copy, buffer, buffer_pos); 858 copy[buffer_pos] = 0; // terminating null 859 return copy; 860} 861 862bufferedStream::~bufferedStream() { 863 if (!buffer_fixed) { 864 FREE_C_HEAP_ARRAY(char, buffer); 865 } 866} 867 868#ifndef PRODUCT 869 870#if defined(SOLARIS) || defined(LINUX) 871#include <sys/types.h> 872#include <sys/socket.h> 873#include <netinet/in.h> 874#include <arpa/inet.h> 875#endif 876 877// Network access 878networkStream::networkStream() : bufferedStream(1024*10, 1024*10) { 879 880 _socket = -1; 881 882 hpi::initialize_socket_library(); 883 884 int result = hpi::socket(AF_INET, SOCK_STREAM, 0); 885 if (result <= 0) { 886 assert(false, "Socket could not be created!"); 887 } else { 888 _socket = result; 889 } 890} 891 892int networkStream::read(char *buf, size_t len) { 893 return hpi::recv(_socket, buf, (int)len, 0); 894} 895 896void networkStream::flush() { 897 if (size() != 0) { 898 int result = hpi::raw_send(_socket, (char *)base(), (int)size(), 0); 899 assert(result != -1, "connection error"); 900 assert(result == (int)size(), "didn't send enough data"); 901 } 902 reset(); 903} 904 905networkStream::~networkStream() { 906 close(); 907} 908 909void networkStream::close() { 910 if (_socket != -1) { 911 flush(); 912 hpi::socket_close(_socket); 913 _socket = -1; 914 } 915} 916 917bool networkStream::connect(const char *ip, short port) { 918 919 struct sockaddr_in server; 920 server.sin_family = AF_INET; 921 server.sin_port = htons(port); 922 923 server.sin_addr.s_addr = inet_addr(ip); 924 if (server.sin_addr.s_addr == (uint32_t)-1) { 925#ifdef _WINDOWS 926 struct hostent* host = hpi::get_host_by_name((char*)ip); 927#else 928 struct hostent* host = gethostbyname(ip); 929#endif 930 if (host != NULL) { 931 memcpy(&server.sin_addr, host->h_addr_list[0], host->h_length); 932 } else { 933 return false; 934 } 935 } 936 937 938 int result = hpi::connect(_socket, (struct sockaddr*)&server, sizeof(struct sockaddr_in)); 939 return (result >= 0); 940} 941 942#endif 943