ostream.cpp revision 7462:a0dd995271c4
1/* 2 * Copyright (c) 1997, 2014, 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_implementation/shared/gcId.hpp" 28#include "oops/oop.inline.hpp" 29#include "runtime/arguments.hpp" 30#include "runtime/os.hpp" 31#include "runtime/vm_version.hpp" 32#include "utilities/defaultStream.hpp" 33#include "utilities/ostream.hpp" 34#include "utilities/top.hpp" 35#include "utilities/xmlstream.hpp" 36 37extern "C" void jio_print(const char* s); // Declarationtion of jvm method 38 39outputStream::outputStream(int width) { 40 _width = width; 41 _position = 0; 42 _newlines = 0; 43 _precount = 0; 44 _indentation = 0; 45} 46 47outputStream::outputStream(int width, bool has_time_stamps) { 48 _width = width; 49 _position = 0; 50 _newlines = 0; 51 _precount = 0; 52 _indentation = 0; 53 if (has_time_stamps) _stamp.update(); 54} 55 56void outputStream::update_position(const char* s, size_t len) { 57 for (size_t i = 0; i < len; i++) { 58 char ch = s[i]; 59 if (ch == '\n') { 60 _newlines += 1; 61 _precount += _position + 1; 62 _position = 0; 63 } else if (ch == '\t') { 64 int tw = 8 - (_position & 7); 65 _position += tw; 66 _precount -= tw-1; // invariant: _precount + _position == total count 67 } else { 68 _position += 1; 69 } 70 } 71} 72 73// Execute a vsprintf, using the given buffer if necessary. 74// Return a pointer to the formatted string. 75const char* outputStream::do_vsnprintf(char* buffer, size_t buflen, 76 const char* format, va_list ap, 77 bool add_cr, 78 size_t& result_len) { 79 assert(buflen >= 2, "buffer too small"); 80 81 const char* result; 82 if (add_cr) buflen--; 83 if (!strchr(format, '%')) { 84 // constant format string 85 result = format; 86 result_len = strlen(result); 87 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate 88 } else if (format[0] == '%' && format[1] == 's' && format[2] == '\0') { 89 // trivial copy-through format string 90 result = va_arg(ap, const char*); 91 result_len = strlen(result); 92 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate 93 } else { 94 // Handle truncation: 95 // posix: upon truncation, vsnprintf returns number of bytes which 96 // would have been written (excluding terminating zero) had the buffer 97 // been large enough 98 // windows: upon truncation, vsnprintf returns -1 99 const int written = vsnprintf(buffer, buflen, format, ap); 100 result = buffer; 101 if (written < (int) buflen && written >= 0) { 102 result_len = written; 103 } else { 104 DEBUG_ONLY(warning("increase O_BUFLEN in ostream.hpp -- output truncated");) 105 result_len = buflen - 1; 106 buffer[result_len] = 0; 107 } 108 } 109 if (add_cr) { 110 if (result != buffer) { 111 strncpy(buffer, result, buflen); 112 result = buffer; 113 } 114 buffer[result_len++] = '\n'; 115 buffer[result_len] = 0; 116 } 117 return result; 118} 119 120void outputStream::print(const char* format, ...) { 121 char buffer[O_BUFLEN]; 122 va_list ap; 123 va_start(ap, format); 124 size_t len; 125 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, false, len); 126 write(str, len); 127 va_end(ap); 128} 129 130void outputStream::print_cr(const char* format, ...) { 131 char buffer[O_BUFLEN]; 132 va_list ap; 133 va_start(ap, format); 134 size_t len; 135 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, true, len); 136 write(str, len); 137 va_end(ap); 138} 139 140void outputStream::vprint(const char *format, va_list argptr) { 141 char buffer[O_BUFLEN]; 142 size_t len; 143 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, false, len); 144 write(str, len); 145} 146 147void outputStream::vprint_cr(const char* format, va_list argptr) { 148 char buffer[O_BUFLEN]; 149 size_t len; 150 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, true, len); 151 write(str, len); 152} 153 154void outputStream::fill_to(int col) { 155 int need_fill = col - position(); 156 sp(need_fill); 157} 158 159void outputStream::move_to(int col, int slop, int min_space) { 160 if (position() >= col + slop) 161 cr(); 162 int need_fill = col - position(); 163 if (need_fill < min_space) 164 need_fill = min_space; 165 sp(need_fill); 166} 167 168void outputStream::put(char ch) { 169 assert(ch != 0, "please fix call site"); 170 char buf[] = { ch, '\0' }; 171 write(buf, 1); 172} 173 174#define SP_USE_TABS false 175 176void outputStream::sp(int count) { 177 if (count < 0) return; 178 if (SP_USE_TABS && count >= 8) { 179 int target = position() + count; 180 while (count >= 8) { 181 this->write("\t", 1); 182 count -= 8; 183 } 184 count = target - position(); 185 } 186 while (count > 0) { 187 int nw = (count > 8) ? 8 : count; 188 this->write(" ", nw); 189 count -= nw; 190 } 191} 192 193void outputStream::cr() { 194 this->write("\n", 1); 195} 196 197void outputStream::stamp() { 198 if (! _stamp.is_updated()) { 199 _stamp.update(); // start at 0 on first call to stamp() 200 } 201 202 // outputStream::stamp() may get called by ostream_abort(), use snprintf 203 // to avoid allocating large stack buffer in print(). 204 char buf[40]; 205 jio_snprintf(buf, sizeof(buf), "%.3f", _stamp.seconds()); 206 print_raw(buf); 207} 208 209void outputStream::stamp(bool guard, 210 const char* prefix, 211 const char* suffix) { 212 if (!guard) { 213 return; 214 } 215 print_raw(prefix); 216 stamp(); 217 print_raw(suffix); 218} 219 220void outputStream::date_stamp(bool guard, 221 const char* prefix, 222 const char* suffix) { 223 if (!guard) { 224 return; 225 } 226 print_raw(prefix); 227 static const char error_time[] = "yyyy-mm-ddThh:mm:ss.mmm+zzzz"; 228 static const int buffer_length = 32; 229 char buffer[buffer_length]; 230 const char* iso8601_result = os::iso8601_time(buffer, buffer_length); 231 if (iso8601_result != NULL) { 232 print_raw(buffer); 233 } else { 234 print_raw(error_time); 235 } 236 print_raw(suffix); 237 return; 238} 239 240void outputStream::gclog_stamp(const GCId& gc_id) { 241 date_stamp(PrintGCDateStamps); 242 stamp(PrintGCTimeStamps); 243 if (PrintGCID) { 244 print("#%u: ", gc_id.id()); 245 } 246} 247 248outputStream& outputStream::indent() { 249 while (_position < _indentation) sp(); 250 return *this; 251} 252 253void outputStream::print_jlong(jlong value) { 254 print(JLONG_FORMAT, value); 255} 256 257void outputStream::print_julong(julong value) { 258 print(JULONG_FORMAT, value); 259} 260 261/** 262 * This prints out hex data in a 'windbg' or 'xxd' form, where each line is: 263 * <hex-address>: 8 * <hex-halfword> <ascii translation (optional)> 264 * example: 265 * 0000000: 7f44 4f46 0102 0102 0000 0000 0000 0000 .DOF............ 266 * 0000010: 0000 0000 0000 0040 0000 0020 0000 0005 .......@... .... 267 * 0000020: 0000 0000 0000 0040 0000 0000 0000 015d .......@.......] 268 * ... 269 * 270 * indent is applied to each line. Ends with a CR. 271 */ 272void outputStream::print_data(void* data, size_t len, bool with_ascii) { 273 size_t limit = (len + 16) / 16 * 16; 274 for (size_t i = 0; i < limit; ++i) { 275 if (i % 16 == 0) { 276 indent().print(INTPTR_FORMAT_W(07)":", i); 277 } 278 if (i % 2 == 0) { 279 print(" "); 280 } 281 if (i < len) { 282 print("%02x", ((unsigned char*)data)[i]); 283 } else { 284 print(" "); 285 } 286 if ((i + 1) % 16 == 0) { 287 if (with_ascii) { 288 print(" "); 289 for (size_t j = 0; j < 16; ++j) { 290 size_t idx = i + j - 15; 291 if (idx < len) { 292 char c = ((char*)data)[idx]; 293 print("%c", c >= 32 && c <= 126 ? c : '.'); 294 } 295 } 296 } 297 cr(); 298 } 299 } 300} 301 302stringStream::stringStream(size_t initial_size) : outputStream() { 303 buffer_length = initial_size; 304 buffer = NEW_RESOURCE_ARRAY(char, buffer_length); 305 buffer_pos = 0; 306 buffer_fixed = false; 307 DEBUG_ONLY(rm = Thread::current()->current_resource_mark();) 308} 309 310// useful for output to fixed chunks of memory, such as performance counters 311stringStream::stringStream(char* fixed_buffer, size_t fixed_buffer_size) : outputStream() { 312 buffer_length = fixed_buffer_size; 313 buffer = fixed_buffer; 314 buffer_pos = 0; 315 buffer_fixed = true; 316} 317 318void stringStream::write(const char* s, size_t len) { 319 size_t write_len = len; // number of non-null bytes to write 320 size_t end = buffer_pos + len + 1; // position after write and final '\0' 321 if (end > buffer_length) { 322 if (buffer_fixed) { 323 // if buffer cannot resize, silently truncate 324 end = buffer_length; 325 write_len = end - buffer_pos - 1; // leave room for the final '\0' 326 } else { 327 // For small overruns, double the buffer. For larger ones, 328 // increase to the requested size. 329 if (end < buffer_length * 2) { 330 end = buffer_length * 2; 331 } 332 char* oldbuf = buffer; 333 assert(rm == NULL || Thread::current()->current_resource_mark() == rm, 334 "stringStream is re-allocated with a different ResourceMark"); 335 buffer = NEW_RESOURCE_ARRAY(char, end); 336 strncpy(buffer, oldbuf, buffer_pos); 337 buffer_length = end; 338 } 339 } 340 // invariant: buffer is always null-terminated 341 guarantee(buffer_pos + write_len + 1 <= buffer_length, "stringStream oob"); 342 buffer[buffer_pos + write_len] = 0; 343 strncpy(buffer + buffer_pos, s, write_len); 344 buffer_pos += write_len; 345 346 // Note that the following does not depend on write_len. 347 // This means that position and count get updated 348 // even when overflow occurs. 349 update_position(s, len); 350} 351 352char* stringStream::as_string() { 353 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos + 1); 354 strncpy(copy, buffer, buffer_pos); 355 copy[buffer_pos] = 0; // terminating null 356 return copy; 357} 358 359stringStream::~stringStream() {} 360 361xmlStream* xtty; 362outputStream* tty; 363outputStream* gclog_or_tty; 364CDS_ONLY(fileStream* classlist_file;) // Only dump the classes that can be stored into the CDS archive 365extern Mutex* tty_lock; 366 367#define EXTRACHARLEN 32 368#define CURRENTAPPX ".current" 369#define FILENAMEBUFLEN 1024 370// convert YYYY-MM-DD HH:MM:SS to YYYY-MM-DD_HH-MM-SS 371char* get_datetime_string(char *buf, size_t len) { 372 os::local_time_string(buf, len); 373 int i = (int)strlen(buf); 374 while (i-- >= 0) { 375 if (buf[i] == ' ') buf[i] = '_'; 376 else if (buf[i] == ':') buf[i] = '-'; 377 } 378 return buf; 379} 380 381static const char* make_log_name_internal(const char* log_name, const char* force_directory, 382 int pid, const char* tms) { 383 const char* basename = log_name; 384 char file_sep = os::file_separator()[0]; 385 const char* cp; 386 char pid_text[32]; 387 388 for (cp = log_name; *cp != '\0'; cp++) { 389 if (*cp == '/' || *cp == file_sep) { 390 basename = cp + 1; 391 } 392 } 393 const char* nametail = log_name; 394 // Compute buffer length 395 size_t buffer_length; 396 if (force_directory != NULL) { 397 buffer_length = strlen(force_directory) + strlen(os::file_separator()) + 398 strlen(basename) + 1; 399 } else { 400 buffer_length = strlen(log_name) + 1; 401 } 402 403 // const char* star = strchr(basename, '*'); 404 const char* pts = strstr(basename, "%p"); 405 int pid_pos = (pts == NULL) ? -1 : (pts - nametail); 406 407 if (pid_pos >= 0) { 408 jio_snprintf(pid_text, sizeof(pid_text), "pid%u", pid); 409 buffer_length += strlen(pid_text); 410 } 411 412 pts = strstr(basename, "%t"); 413 int tms_pos = (pts == NULL) ? -1 : (pts - nametail); 414 if (tms_pos >= 0) { 415 buffer_length += strlen(tms); 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, -Xloggc:log_name or 477// -XX:DumpLoadedClassList=<file_name> 478// in log_name, %p => pid1234 and 479// %t => YYYY-MM-DD_HH-MM-SS 480static 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#ifndef PRODUCT 488void test_loggc_filename() { 489 int pid; 490 char tms[32]; 491 char i_result[FILENAMEBUFLEN]; 492 const char* o_result; 493 get_datetime_string(tms, sizeof(tms)); 494 pid = os::current_process_id(); 495 496 // test.log 497 jio_snprintf(i_result, sizeof(char)*FILENAMEBUFLEN, "test.log", tms); 498 o_result = make_log_name_internal("test.log", NULL, pid, tms); 499 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"test.log\", NULL)"); 500 FREE_C_HEAP_ARRAY(char, o_result); 501 502 // test-%t-%p.log 503 jio_snprintf(i_result, sizeof(char)*FILENAMEBUFLEN, "test-%s-pid%u.log", tms, pid); 504 o_result = make_log_name_internal("test-%t-%p.log", NULL, pid, tms); 505 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"test-%%t-%%p.log\", NULL)"); 506 FREE_C_HEAP_ARRAY(char, o_result); 507 508 // test-%t%p.log 509 jio_snprintf(i_result, sizeof(char)*FILENAMEBUFLEN, "test-%spid%u.log", tms, pid); 510 o_result = make_log_name_internal("test-%t%p.log", NULL, pid, tms); 511 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"test-%%t%%p.log\", NULL)"); 512 FREE_C_HEAP_ARRAY(char, o_result); 513 514 // %p%t.log 515 jio_snprintf(i_result, sizeof(char)*FILENAMEBUFLEN, "pid%u%s.log", pid, tms); 516 o_result = make_log_name_internal("%p%t.log", NULL, pid, tms); 517 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"%%p%%t.log\", NULL)"); 518 FREE_C_HEAP_ARRAY(char, o_result); 519 520 // %p-test.log 521 jio_snprintf(i_result, sizeof(char)*FILENAMEBUFLEN, "pid%u-test.log", pid); 522 o_result = make_log_name_internal("%p-test.log", NULL, pid, tms); 523 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"%%p-test.log\", NULL)"); 524 FREE_C_HEAP_ARRAY(char, o_result); 525 526 // %t.log 527 jio_snprintf(i_result, sizeof(char)*FILENAMEBUFLEN, "%s.log", tms); 528 o_result = make_log_name_internal("%t.log", NULL, pid, tms); 529 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"%%t.log\", NULL)"); 530 FREE_C_HEAP_ARRAY(char, o_result); 531} 532#endif // PRODUCT 533 534fileStream::fileStream(const char* file_name) { 535 _file = fopen(file_name, "w"); 536 if (_file != NULL) { 537 _need_close = true; 538 } else { 539 warning("Cannot open file %s due to %s\n", file_name, strerror(errno)); 540 _need_close = false; 541 } 542} 543 544fileStream::fileStream(const char* file_name, const char* opentype) { 545 _file = fopen(file_name, opentype); 546 if (_file != NULL) { 547 _need_close = true; 548 } else { 549 warning("Cannot open file %s due to %s\n", file_name, strerror(errno)); 550 _need_close = false; 551 } 552} 553 554void fileStream::write(const char* s, size_t len) { 555 if (_file != NULL) { 556 // Make an unused local variable to avoid warning from gcc 4.x compiler. 557 size_t count = fwrite(s, 1, len, _file); 558 } 559 update_position(s, len); 560} 561 562long fileStream::fileSize() { 563 long size = -1; 564 if (_file != NULL) { 565 long pos = ::ftell(_file); 566 if (::fseek(_file, 0, SEEK_END) == 0) { 567 size = ::ftell(_file); 568 } 569 ::fseek(_file, pos, SEEK_SET); 570 } 571 return size; 572} 573 574char* fileStream::readln(char *data, int count ) { 575 char * ret = ::fgets(data, count, _file); 576 //Get rid of annoying \n char 577 data[::strlen(data)-1] = '\0'; 578 return ret; 579} 580 581fileStream::~fileStream() { 582 if (_file != NULL) { 583 if (_need_close) fclose(_file); 584 _file = NULL; 585 } 586} 587 588void fileStream::flush() { 589 fflush(_file); 590} 591 592fdStream::fdStream(const char* file_name) { 593 _fd = open(file_name, O_WRONLY | O_CREAT | O_TRUNC, 0666); 594 _need_close = true; 595} 596 597fdStream::~fdStream() { 598 if (_fd != -1) { 599 if (_need_close) close(_fd); 600 _fd = -1; 601 } 602} 603 604void fdStream::write(const char* s, size_t len) { 605 if (_fd != -1) { 606 // Make an unused local variable to avoid warning from gcc 4.x compiler. 607 size_t count = ::write(_fd, s, (int)len); 608 } 609 update_position(s, len); 610} 611 612// dump vm version, os version, platform info, build id, 613// memory usage and command line flags into header 614void gcLogFileStream::dump_loggc_header() { 615 if (is_open()) { 616 print_cr("%s", Abstract_VM_Version::internal_vm_info_string()); 617 os::print_memory_info(this); 618 print("CommandLine flags: "); 619 CommandLineFlags::printSetFlags(this); 620 } 621} 622 623gcLogFileStream::~gcLogFileStream() { 624 if (_file != NULL) { 625 if (_need_close) fclose(_file); 626 _file = NULL; 627 } 628 if (_file_name != NULL) { 629 FREE_C_HEAP_ARRAY(char, _file_name); 630 _file_name = NULL; 631 } 632} 633 634gcLogFileStream::gcLogFileStream(const char* file_name) { 635 _cur_file_num = 0; 636 _bytes_written = 0L; 637 _file_name = make_log_name(file_name, NULL); 638 639 // gc log file rotation 640 if (UseGCLogFileRotation && NumberOfGCLogFiles > 1) { 641 char tempbuf[FILENAMEBUFLEN]; 642 jio_snprintf(tempbuf, sizeof(tempbuf), "%s.%d" CURRENTAPPX, _file_name, _cur_file_num); 643 _file = fopen(tempbuf, "w"); 644 } else { 645 _file = fopen(_file_name, "w"); 646 } 647 if (_file != NULL) { 648 _need_close = true; 649 dump_loggc_header(); 650 } else { 651 warning("Cannot open file %s due to %s\n", _file_name, strerror(errno)); 652 _need_close = false; 653 } 654} 655 656void gcLogFileStream::write(const char* s, size_t len) { 657 if (_file != NULL) { 658 size_t count = fwrite(s, 1, len, _file); 659 _bytes_written += count; 660 } 661 update_position(s, len); 662} 663 664// rotate_log must be called from VMThread at safepoint. In case need change parameters 665// for gc log rotation from thread other than VMThread, a sub type of VM_Operation 666// should be created and be submitted to VMThread's operation queue. DO NOT call this 667// function directly. Currently, it is safe to rotate log at safepoint through VMThread. 668// That is, no mutator threads and concurrent GC threads run parallel with VMThread to 669// write to gc log file at safepoint. If in future, changes made for mutator threads or 670// concurrent GC threads to run parallel with VMThread at safepoint, write and rotate_log 671// must be synchronized. 672void gcLogFileStream::rotate_log(bool force, outputStream* out) { 673 char time_msg[FILENAMEBUFLEN]; 674 char time_str[EXTRACHARLEN]; 675 char current_file_name[FILENAMEBUFLEN]; 676 char renamed_file_name[FILENAMEBUFLEN]; 677 678 if (!should_rotate(force)) { 679 return; 680 } 681 682#ifdef ASSERT 683 Thread *thread = Thread::current(); 684 assert(thread == NULL || 685 (thread->is_VM_thread() && SafepointSynchronize::is_at_safepoint()), 686 "Must be VMThread at safepoint"); 687#endif 688 if (NumberOfGCLogFiles == 1) { 689 // rotate in same file 690 rewind(); 691 _bytes_written = 0L; 692 jio_snprintf(time_msg, sizeof(time_msg), "File %s rotated at %s\n", 693 _file_name, os::local_time_string((char *)time_str, sizeof(time_str))); 694 write(time_msg, strlen(time_msg)); 695 696 if (out != NULL) { 697 out->print("%s", time_msg); 698 } 699 700 dump_loggc_header(); 701 return; 702 } 703 704#if defined(_WINDOWS) 705#ifndef F_OK 706#define F_OK 0 707#endif 708#endif // _WINDOWS 709 710 // rotate file in names extended_filename.0, extended_filename.1, ..., 711 // extended_filename.<NumberOfGCLogFiles - 1>. Current rotation file name will 712 // have a form of extended_filename.<i>.current where i is the current rotation 713 // file number. After it reaches max file size, the file will be saved and renamed 714 // with .current removed from its tail. 715 size_t filename_len = strlen(_file_name); 716 if (_file != NULL) { 717 jio_snprintf(renamed_file_name, filename_len + EXTRACHARLEN, "%s.%d", 718 _file_name, _cur_file_num); 719 jio_snprintf(current_file_name, filename_len + EXTRACHARLEN, "%s.%d" CURRENTAPPX, 720 _file_name, _cur_file_num); 721 722 const char* msg = force ? "GC log rotation request has been received." 723 : "GC log file has reached the maximum size."; 724 jio_snprintf(time_msg, sizeof(time_msg), "%s %s Saved as %s\n", 725 os::local_time_string((char *)time_str, sizeof(time_str)), 726 msg, renamed_file_name); 727 write(time_msg, strlen(time_msg)); 728 729 if (out != NULL) { 730 out->print("%s", time_msg); 731 } 732 733 fclose(_file); 734 _file = NULL; 735 736 bool can_rename = true; 737 if (access(current_file_name, F_OK) != 0) { 738 // current file does not exist? 739 warning("No source file exists, cannot rename\n"); 740 can_rename = false; 741 } 742 if (can_rename) { 743 if (access(renamed_file_name, F_OK) == 0) { 744 if (remove(renamed_file_name) != 0) { 745 warning("Could not delete existing file %s\n", renamed_file_name); 746 can_rename = false; 747 } 748 } else { 749 // file does not exist, ok to rename 750 } 751 } 752 if (can_rename && rename(current_file_name, renamed_file_name) != 0) { 753 warning("Could not rename %s to %s\n", _file_name, renamed_file_name); 754 } 755 } 756 757 _cur_file_num++; 758 if (_cur_file_num > NumberOfGCLogFiles - 1) _cur_file_num = 0; 759 jio_snprintf(current_file_name, filename_len + EXTRACHARLEN, "%s.%d" CURRENTAPPX, 760 _file_name, _cur_file_num); 761 _file = fopen(current_file_name, "w"); 762 763 if (_file != NULL) { 764 _bytes_written = 0L; 765 _need_close = true; 766 // reuse current_file_name for time_msg 767 jio_snprintf(current_file_name, filename_len + EXTRACHARLEN, 768 "%s.%d", _file_name, _cur_file_num); 769 jio_snprintf(time_msg, sizeof(time_msg), "%s GC log file created %s\n", 770 os::local_time_string((char *)time_str, sizeof(time_str)), 771 current_file_name); 772 write(time_msg, strlen(time_msg)); 773 774 if (out != NULL) { 775 out->print("%s", time_msg); 776 } 777 778 dump_loggc_header(); 779 // remove the existing file 780 if (access(current_file_name, F_OK) == 0) { 781 if (remove(current_file_name) != 0) { 782 warning("Could not delete existing file %s\n", current_file_name); 783 } 784 } 785 } else { 786 warning("failed to open rotation log file %s due to %s\n" 787 "Turned off GC log file rotation\n", 788 _file_name, strerror(errno)); 789 _need_close = false; 790 FLAG_SET_DEFAULT(UseGCLogFileRotation, false); 791 } 792} 793 794defaultStream* defaultStream::instance = NULL; 795int defaultStream::_output_fd = 1; 796int defaultStream::_error_fd = 2; 797FILE* defaultStream::_output_stream = stdout; 798FILE* defaultStream::_error_stream = stderr; 799 800#define LOG_MAJOR_VERSION 160 801#define LOG_MINOR_VERSION 1 802 803void defaultStream::init() { 804 _inited = true; 805 if (LogVMOutput || LogCompilation) { 806 init_log(); 807 } 808} 809 810bool defaultStream::has_log_file() { 811 // lazily create log file (at startup, LogVMOutput is false even 812 // if +LogVMOutput is used, because the flags haven't been parsed yet) 813 // For safer printing during fatal error handling, do not init logfile 814 // if a VM error has been reported. 815 if (!_inited && !is_error_reported()) init(); 816 return _log_file != NULL; 817} 818 819void defaultStream::init_log() { 820 // %%% Need a MutexLocker? 821 const char* log_name = LogFile != NULL ? LogFile : "hotspot_%p.log"; 822 const char* try_name = make_log_name(log_name, NULL); 823 fileStream* file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name); 824 if (!file->is_open()) { 825 // Try again to open the file. 826 char warnbuf[O_BUFLEN*2]; 827 jio_snprintf(warnbuf, sizeof(warnbuf), 828 "Warning: Cannot open log file: %s\n", try_name); 829 // Note: This feature is for maintainer use only. No need for L10N. 830 jio_print(warnbuf); 831 FREE_C_HEAP_ARRAY(char, try_name); 832 try_name = make_log_name(log_name, os::get_temp_directory()); 833 jio_snprintf(warnbuf, sizeof(warnbuf), 834 "Warning: Forcing option -XX:LogFile=%s\n", try_name); 835 jio_print(warnbuf); 836 delete file; 837 file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name); 838 } 839 FREE_C_HEAP_ARRAY(char, try_name); 840 841 if (file->is_open()) { 842 _log_file = file; 843 xmlStream* xs = new(ResourceObj::C_HEAP, mtInternal) xmlStream(file); 844 _outer_xmlStream = xs; 845 if (this == tty) xtty = xs; 846 // Write XML header. 847 xs->print_cr("<?xml version='1.0' encoding='UTF-8'?>"); 848 // (For now, don't bother to issue a DTD for this private format.) 849 jlong time_ms = os::javaTimeMillis() - tty->time_stamp().milliseconds(); 850 // %%% Should be: jlong time_ms = os::start_time_milliseconds(), if 851 // we ever get round to introduce that method on the os class 852 xs->head("hotspot_log version='%d %d'" 853 " process='%d' time_ms='"INT64_FORMAT"'", 854 LOG_MAJOR_VERSION, LOG_MINOR_VERSION, 855 os::current_process_id(), (int64_t)time_ms); 856 // Write VM version header immediately. 857 xs->head("vm_version"); 858 xs->head("name"); xs->text("%s", VM_Version::vm_name()); xs->cr(); 859 xs->tail("name"); 860 xs->head("release"); xs->text("%s", VM_Version::vm_release()); xs->cr(); 861 xs->tail("release"); 862 xs->head("info"); xs->text("%s", VM_Version::internal_vm_info_string()); xs->cr(); 863 xs->tail("info"); 864 xs->tail("vm_version"); 865 // Record information about the command-line invocation. 866 xs->head("vm_arguments"); // Cf. Arguments::print_on() 867 if (Arguments::num_jvm_flags() > 0) { 868 xs->head("flags"); 869 Arguments::print_jvm_flags_on(xs->text()); 870 xs->tail("flags"); 871 } 872 if (Arguments::num_jvm_args() > 0) { 873 xs->head("args"); 874 Arguments::print_jvm_args_on(xs->text()); 875 xs->tail("args"); 876 } 877 if (Arguments::java_command() != NULL) { 878 xs->head("command"); xs->text()->print_cr("%s", Arguments::java_command()); 879 xs->tail("command"); 880 } 881 if (Arguments::sun_java_launcher() != NULL) { 882 xs->head("launcher"); xs->text()->print_cr("%s", Arguments::sun_java_launcher()); 883 xs->tail("launcher"); 884 } 885 if (Arguments::system_properties() != NULL) { 886 xs->head("properties"); 887 // Print it as a java-style property list. 888 // System properties don't generally contain newlines, so don't bother with unparsing. 889 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { 890 xs->text()->print_cr("%s=%s", p->key(), p->value()); 891 } 892 xs->tail("properties"); 893 } 894 xs->tail("vm_arguments"); 895 // tty output per se is grouped under the <tty>...</tty> element. 896 xs->head("tty"); 897 // All further non-markup text gets copied to the tty: 898 xs->_text = this; // requires friend declaration! 899 } else { 900 delete(file); 901 // and leave xtty as NULL 902 LogVMOutput = false; 903 DisplayVMOutput = true; 904 LogCompilation = false; 905 } 906} 907 908// finish_log() is called during normal VM shutdown. finish_log_on_error() is 909// called by ostream_abort() after a fatal error. 910// 911void defaultStream::finish_log() { 912 xmlStream* xs = _outer_xmlStream; 913 xs->done("tty"); 914 915 // Other log forks are appended here, at the End of Time: 916 CompileLog::finish_log(xs->out()); // write compile logging, if any, now 917 918 xs->done("hotspot_log"); 919 xs->flush(); 920 921 fileStream* file = _log_file; 922 _log_file = NULL; 923 924 delete _outer_xmlStream; 925 _outer_xmlStream = NULL; 926 927 file->flush(); 928 delete file; 929} 930 931void defaultStream::finish_log_on_error(char *buf, int buflen) { 932 xmlStream* xs = _outer_xmlStream; 933 934 if (xs && xs->out()) { 935 936 xs->done_raw("tty"); 937 938 // Other log forks are appended here, at the End of Time: 939 CompileLog::finish_log_on_error(xs->out(), buf, buflen); // write compile logging, if any, now 940 941 xs->done_raw("hotspot_log"); 942 xs->flush(); 943 944 fileStream* file = _log_file; 945 _log_file = NULL; 946 _outer_xmlStream = NULL; 947 948 if (file) { 949 file->flush(); 950 951 // Can't delete or close the file because delete and fclose aren't 952 // async-safe. We are about to die, so leave it to the kernel. 953 // delete file; 954 } 955 } 956} 957 958intx defaultStream::hold(intx writer_id) { 959 bool has_log = has_log_file(); // check before locking 960 if (// impossible, but who knows? 961 writer_id == NO_WRITER || 962 963 // bootstrap problem 964 tty_lock == NULL || 965 966 // can't grab a lock or call Thread::current() if TLS isn't initialized 967 ThreadLocalStorage::thread() == NULL || 968 969 // developer hook 970 !SerializeVMOutput || 971 972 // VM already unhealthy 973 is_error_reported() || 974 975 // safepoint == global lock (for VM only) 976 (SafepointSynchronize::is_synchronizing() && 977 Thread::current()->is_VM_thread()) 978 ) { 979 // do not attempt to lock unless we know the thread and the VM is healthy 980 return NO_WRITER; 981 } 982 if (_writer == writer_id) { 983 // already held, no need to re-grab the lock 984 return NO_WRITER; 985 } 986 tty_lock->lock_without_safepoint_check(); 987 // got the lock 988 if (writer_id != _last_writer) { 989 if (has_log) { 990 _log_file->bol(); 991 // output a hint where this output is coming from: 992 _log_file->print_cr("<writer thread='" UINTX_FORMAT "'/>", writer_id); 993 } 994 _last_writer = writer_id; 995 } 996 _writer = writer_id; 997 return writer_id; 998} 999 1000void defaultStream::release(intx holder) { 1001 if (holder == NO_WRITER) { 1002 // nothing to release: either a recursive lock, or we scribbled (too bad) 1003 return; 1004 } 1005 if (_writer != holder) { 1006 return; // already unlocked, perhaps via break_tty_lock_for_safepoint 1007 } 1008 _writer = NO_WRITER; 1009 tty_lock->unlock(); 1010} 1011 1012 1013// Yuck: jio_print does not accept char*/len. 1014static void call_jio_print(const char* s, size_t len) { 1015 char buffer[O_BUFLEN+100]; 1016 if (len > sizeof(buffer)-1) { 1017 warning("increase O_BUFLEN in ostream.cpp -- output truncated"); 1018 len = sizeof(buffer)-1; 1019 } 1020 strncpy(buffer, s, len); 1021 buffer[len] = '\0'; 1022 jio_print(buffer); 1023} 1024 1025 1026void defaultStream::write(const char* s, size_t len) { 1027 intx thread_id = os::current_thread_id(); 1028 intx holder = hold(thread_id); 1029 1030 if (DisplayVMOutput && 1031 (_outer_xmlStream == NULL || !_outer_xmlStream->inside_attrs())) { 1032 // print to output stream. It can be redirected by a vfprintf hook 1033 if (s[len] == '\0') { 1034 jio_print(s); 1035 } else { 1036 call_jio_print(s, len); 1037 } 1038 } 1039 1040 // print to log file 1041 if (has_log_file()) { 1042 int nl0 = _newlines; 1043 xmlTextStream::write(s, len); 1044 // flush the log file too, if there were any newlines 1045 if (nl0 != _newlines){ 1046 flush(); 1047 } 1048 } else { 1049 update_position(s, len); 1050 } 1051 1052 release(holder); 1053} 1054 1055intx ttyLocker::hold_tty() { 1056 if (defaultStream::instance == NULL) return defaultStream::NO_WRITER; 1057 intx thread_id = os::current_thread_id(); 1058 return defaultStream::instance->hold(thread_id); 1059} 1060 1061void ttyLocker::release_tty(intx holder) { 1062 if (holder == defaultStream::NO_WRITER) return; 1063 defaultStream::instance->release(holder); 1064} 1065 1066bool ttyLocker::release_tty_if_locked() { 1067 intx thread_id = os::current_thread_id(); 1068 if (defaultStream::instance->writer() == thread_id) { 1069 // release the lock and return true so callers know if was 1070 // previously held. 1071 release_tty(thread_id); 1072 return true; 1073 } 1074 return false; 1075} 1076 1077void ttyLocker::break_tty_lock_for_safepoint(intx holder) { 1078 if (defaultStream::instance != NULL && 1079 defaultStream::instance->writer() == holder) { 1080 if (xtty != NULL) { 1081 xtty->print_cr("<!-- safepoint while printing -->"); 1082 } 1083 defaultStream::instance->release(holder); 1084 } 1085 // (else there was no lock to break) 1086} 1087 1088void ostream_init() { 1089 if (defaultStream::instance == NULL) { 1090 defaultStream::instance = new(ResourceObj::C_HEAP, mtInternal) defaultStream(); 1091 tty = defaultStream::instance; 1092 1093 // We want to ensure that time stamps in GC logs consider time 0 1094 // the time when the JVM is initialized, not the first time we ask 1095 // for a time stamp. So, here, we explicitly update the time stamp 1096 // of tty. 1097 tty->time_stamp().update_to(1); 1098 } 1099} 1100 1101void ostream_init_log() { 1102 // For -Xloggc:<file> option - called in runtime/thread.cpp 1103 // Note : this must be called AFTER ostream_init() 1104 1105 gclog_or_tty = tty; // default to tty 1106 if (Arguments::gc_log_filename() != NULL) { 1107 fileStream * gclog = new(ResourceObj::C_HEAP, mtInternal) 1108 gcLogFileStream(Arguments::gc_log_filename()); 1109 if (gclog->is_open()) { 1110 // now we update the time stamp of the GC log to be synced up 1111 // with tty. 1112 gclog->time_stamp().update_to(tty->time_stamp().ticks()); 1113 } 1114 gclog_or_tty = gclog; 1115 } 1116 1117#if INCLUDE_CDS 1118 // For -XX:DumpLoadedClassList=<file> option 1119 if (DumpLoadedClassList != NULL) { 1120 const char* list_name = make_log_name(DumpLoadedClassList, NULL); 1121 classlist_file = new(ResourceObj::C_HEAP, mtInternal) 1122 fileStream(list_name); 1123 FREE_C_HEAP_ARRAY(char, list_name); 1124 } 1125#endif 1126 1127 // If we haven't lazily initialized the logfile yet, do it now, 1128 // to avoid the possibility of lazy initialization during a VM 1129 // crash, which can affect the stability of the fatal error handler. 1130 defaultStream::instance->has_log_file(); 1131} 1132 1133// ostream_exit() is called during normal VM exit to finish log files, flush 1134// output and free resource. 1135void ostream_exit() { 1136 static bool ostream_exit_called = false; 1137 if (ostream_exit_called) return; 1138 ostream_exit_called = true; 1139#if INCLUDE_CDS 1140 if (classlist_file != NULL) { 1141 delete classlist_file; 1142 } 1143#endif 1144 if (gclog_or_tty != tty) { 1145 delete gclog_or_tty; 1146 } 1147 { 1148 // we temporaly disable PrintMallocFree here 1149 // as otherwise it'll lead to using of almost deleted 1150 // tty or defaultStream::instance in logging facility 1151 // of HeapFree(), see 6391258 1152 DEBUG_ONLY(FlagSetting fs(PrintMallocFree, false);) 1153 if (tty != defaultStream::instance) { 1154 delete tty; 1155 } 1156 if (defaultStream::instance != NULL) { 1157 delete defaultStream::instance; 1158 } 1159 } 1160 tty = NULL; 1161 xtty = NULL; 1162 gclog_or_tty = NULL; 1163 defaultStream::instance = NULL; 1164} 1165 1166// ostream_abort() is called by os::abort() when VM is about to die. 1167void ostream_abort() { 1168 // Here we can't delete gclog_or_tty and tty, just flush their output 1169 if (gclog_or_tty) gclog_or_tty->flush(); 1170 if (tty) tty->flush(); 1171 1172 if (defaultStream::instance != NULL) { 1173 static char buf[4096]; 1174 defaultStream::instance->finish_log_on_error(buf, sizeof(buf)); 1175 } 1176} 1177 1178staticBufferStream::staticBufferStream(char* buffer, size_t buflen, 1179 outputStream *outer_stream) { 1180 _buffer = buffer; 1181 _buflen = buflen; 1182 _outer_stream = outer_stream; 1183 // compile task prints time stamp relative to VM start 1184 _stamp.update_to(1); 1185} 1186 1187void staticBufferStream::write(const char* c, size_t len) { 1188 _outer_stream->print_raw(c, (int)len); 1189} 1190 1191void staticBufferStream::flush() { 1192 _outer_stream->flush(); 1193} 1194 1195void staticBufferStream::print(const char* format, ...) { 1196 va_list ap; 1197 va_start(ap, format); 1198 size_t len; 1199 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, false, len); 1200 write(str, len); 1201 va_end(ap); 1202} 1203 1204void staticBufferStream::print_cr(const char* format, ...) { 1205 va_list ap; 1206 va_start(ap, format); 1207 size_t len; 1208 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, true, len); 1209 write(str, len); 1210 va_end(ap); 1211} 1212 1213void staticBufferStream::vprint(const char *format, va_list argptr) { 1214 size_t len; 1215 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, false, len); 1216 write(str, len); 1217} 1218 1219void staticBufferStream::vprint_cr(const char* format, va_list argptr) { 1220 size_t len; 1221 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, true, len); 1222 write(str, len); 1223} 1224 1225bufferedStream::bufferedStream(size_t initial_size, size_t bufmax) : outputStream() { 1226 buffer_length = initial_size; 1227 buffer = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal); 1228 buffer_pos = 0; 1229 buffer_fixed = false; 1230 buffer_max = bufmax; 1231} 1232 1233bufferedStream::bufferedStream(char* fixed_buffer, size_t fixed_buffer_size, size_t bufmax) : outputStream() { 1234 buffer_length = fixed_buffer_size; 1235 buffer = fixed_buffer; 1236 buffer_pos = 0; 1237 buffer_fixed = true; 1238 buffer_max = bufmax; 1239} 1240 1241void bufferedStream::write(const char* s, size_t len) { 1242 1243 if(buffer_pos + len > buffer_max) { 1244 flush(); 1245 } 1246 1247 size_t end = buffer_pos + len; 1248 if (end >= buffer_length) { 1249 if (buffer_fixed) { 1250 // if buffer cannot resize, silently truncate 1251 len = buffer_length - buffer_pos - 1; 1252 } else { 1253 // For small overruns, double the buffer. For larger ones, 1254 // increase to the requested size. 1255 if (end < buffer_length * 2) { 1256 end = buffer_length * 2; 1257 } 1258 buffer = REALLOC_C_HEAP_ARRAY(char, buffer, end, mtInternal); 1259 buffer_length = end; 1260 } 1261 } 1262 memcpy(buffer + buffer_pos, s, len); 1263 buffer_pos += len; 1264 update_position(s, len); 1265} 1266 1267char* bufferedStream::as_string() { 1268 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1); 1269 strncpy(copy, buffer, buffer_pos); 1270 copy[buffer_pos] = 0; // terminating null 1271 return copy; 1272} 1273 1274bufferedStream::~bufferedStream() { 1275 if (!buffer_fixed) { 1276 FREE_C_HEAP_ARRAY(char, buffer); 1277 } 1278} 1279 1280#ifndef PRODUCT 1281 1282#if defined(SOLARIS) || defined(LINUX) || defined(AIX) || defined(_ALLBSD_SOURCE) 1283#include <sys/types.h> 1284#include <sys/socket.h> 1285#include <netinet/in.h> 1286#include <arpa/inet.h> 1287#endif 1288 1289// Network access 1290networkStream::networkStream() : bufferedStream(1024*10, 1024*10) { 1291 1292 _socket = -1; 1293 1294 int result = os::socket(AF_INET, SOCK_STREAM, 0); 1295 if (result <= 0) { 1296 assert(false, "Socket could not be created!"); 1297 } else { 1298 _socket = result; 1299 } 1300} 1301 1302int networkStream::read(char *buf, size_t len) { 1303 return os::recv(_socket, buf, (int)len, 0); 1304} 1305 1306void networkStream::flush() { 1307 if (size() != 0) { 1308 int result = os::raw_send(_socket, (char *)base(), size(), 0); 1309 assert(result != -1, "connection error"); 1310 assert(result == (int)size(), "didn't send enough data"); 1311 } 1312 reset(); 1313} 1314 1315networkStream::~networkStream() { 1316 close(); 1317} 1318 1319void networkStream::close() { 1320 if (_socket != -1) { 1321 flush(); 1322 os::socket_close(_socket); 1323 _socket = -1; 1324 } 1325} 1326 1327bool networkStream::connect(const char *ip, short port) { 1328 1329 struct sockaddr_in server; 1330 server.sin_family = AF_INET; 1331 server.sin_port = htons(port); 1332 1333 server.sin_addr.s_addr = inet_addr(ip); 1334 if (server.sin_addr.s_addr == (uint32_t)-1) { 1335 struct hostent* host = os::get_host_by_name((char*)ip); 1336 if (host != NULL) { 1337 memcpy(&server.sin_addr, host->h_addr_list[0], host->h_length); 1338 } else { 1339 return false; 1340 } 1341 } 1342 1343 1344 int result = os::connect(_socket, (struct sockaddr*)&server, sizeof(struct sockaddr_in)); 1345 return (result >= 0); 1346} 1347 1348#endif 1349