1 /* 2 * Copyright (c) 1997, 2013, 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 #ifdef TARGET_OS_FAMILY_bsd 43 # include "os_bsd.inline.hpp" 44 #endif 45 46 extern "C" void jio_print(const char* s); // Declarationtion of jvm method 47 48 outputStream::outputStream(int width) { 49 _width = width; 50 _position = 0; 51 _newlines = 0; 52 _precount = 0; 53 _indentation = 0; 54 } 55 56 outputStream::outputStream(int width, bool has_time_stamps) { 57 _width = width; 58 _position = 0; 59 _newlines = 0; 60 _precount = 0; 61 _indentation = 0; 62 if (has_time_stamps) _stamp.update(); 63 } 64 65 void outputStream::update_position(const char* s, size_t len) { 66 for (size_t i = 0; i < len; i++) { 67 char ch = s[i]; 68 if (ch == '\n') { 69 _newlines += 1; 70 _precount += _position + 1; 71 _position = 0; 72 } else if (ch == '\t') { 73 int tw = 8 - (_position & 7); 74 _position += tw; 75 _precount -= tw-1; // invariant: _precount + _position == total count 76 } else { 77 _position += 1; 78 } 79 } 80 } 81 82 // Execute a vsprintf, using the given buffer if necessary. 83 // Return a pointer to the formatted string. 84 const char* outputStream::do_vsnprintf(char* buffer, size_t buflen, 85 const char* format, va_list ap, 86 bool add_cr, 87 size_t& result_len) { 88 const char* result; 89 if (add_cr) buflen--; 90 if (!strchr(format, '%')) { 91 // constant format string 92 result = format; 93 result_len = strlen(result); 94 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate 95 } else if (format[0] == '%' && format[1] == 's' && format[2] == '\0') { 96 // trivial copy-through format string 97 result = va_arg(ap, const char*); 98 result_len = strlen(result); 99 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate 100 } else if (vsnprintf(buffer, buflen, format, ap) >= 0) { 101 result = buffer; 102 result_len = strlen(result); 103 } else { 104 DEBUG_ONLY(warning("increase O_BUFLEN in ostream.hpp -- output truncated");) 105 result = buffer; 106 result_len = buflen - 1; 107 buffer[result_len] = 0; 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 } 119 120 void 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 } 129 130 void 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 } 139 140 void 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 } 146 147 void 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 } 153 154 void outputStream::fill_to(int col) { 155 int need_fill = col - position(); 156 sp(need_fill); 157 } 158 159 void 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 } 167 168 void 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 175 176 void 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 } 192 193 void outputStream::cr() { 194 this->write("\n", 1); 195 } 196 197 void 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 } 208 209 void 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 } 219 220 void 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 } 239 240 outputStream& outputStream::indent() { 241 while (_position < _indentation) sp(); 242 return *this; 243 } 244 245 void outputStream::print_jlong(jlong value) { 246 print(JLONG_FORMAT, value); 247 } 248 249 void outputStream::print_julong(julong value) { 250 print(JULONG_FORMAT, value); 251 } 252 253 /** 254 * This prints out hex data in a 'windbg' or 'xxd' form, where each line is: 255 * <hex-address>: 8 * <hex-halfword> <ascii translation (optional)> 256 * example: 257 * 0000000: 7f44 4f46 0102 0102 0000 0000 0000 0000 .DOF............ 258 * 0000010: 0000 0000 0000 0040 0000 0020 0000 0005 .......@... .... 259 * 0000020: 0000 0000 0000 0040 0000 0000 0000 015d .......@.......] 260 * ... 261 * 262 * indent is applied to each line. Ends with a CR. 263 */ 264 void outputStream::print_data(void* data, size_t len, bool with_ascii) { 265 size_t limit = (len + 16) / 16 * 16; 266 for (size_t i = 0; i < limit; ++i) { 267 if (i % 16 == 0) { 268 indent().print("%07x:", i); 269 } 270 if (i % 2 == 0) { 271 print(" "); 272 } 273 if (i < len) { 274 print("%02x", ((unsigned char*)data)[i]); 275 } else { 276 print(" "); 277 } 278 if ((i + 1) % 16 == 0) { 279 if (with_ascii) { 280 print(" "); 281 for (size_t j = 0; j < 16; ++j) { 282 size_t idx = i + j - 15; 283 if (idx < len) { 284 char c = ((char*)data)[idx]; 285 print("%c", c >= 32 && c <= 126 ? c : '.'); 286 } 287 } 288 } 289 print_cr(""); 290 } 291 } 292 } 293 294 stringStream::stringStream(size_t initial_size) : outputStream() { 295 buffer_length = initial_size; 296 buffer = NEW_RESOURCE_ARRAY(char, buffer_length); 297 buffer_pos = 0; 298 buffer_fixed = false; 299 DEBUG_ONLY(rm = Thread::current()->current_resource_mark();) 300 } 301 302 // useful for output to fixed chunks of memory, such as performance counters 303 stringStream::stringStream(char* fixed_buffer, size_t fixed_buffer_size) : outputStream() { 304 buffer_length = fixed_buffer_size; 305 buffer = fixed_buffer; 306 buffer_pos = 0; 307 buffer_fixed = true; 308 } 309 310 void stringStream::write(const char* s, size_t len) { 311 size_t write_len = len; // number of non-null bytes to write 312 size_t end = buffer_pos + len + 1; // position after write and final '\0' 313 if (end > buffer_length) { 314 if (buffer_fixed) { 315 // if buffer cannot resize, silently truncate 316 end = buffer_length; 317 write_len = end - buffer_pos - 1; // leave room for the final '\0' 318 } else { 319 // For small overruns, double the buffer. For larger ones, 320 // increase to the requested size. 321 if (end < buffer_length * 2) { 322 end = buffer_length * 2; 323 } 324 char* oldbuf = buffer; 325 assert(rm == NULL || Thread::current()->current_resource_mark() == rm, 326 "stringStream is re-allocated with a different ResourceMark"); 327 buffer = NEW_RESOURCE_ARRAY(char, end); 328 strncpy(buffer, oldbuf, buffer_pos); 329 buffer_length = end; 330 } 331 } 332 // invariant: buffer is always null-terminated 333 guarantee(buffer_pos + write_len + 1 <= buffer_length, "stringStream oob"); 334 buffer[buffer_pos + write_len] = 0; 335 strncpy(buffer + buffer_pos, s, write_len); 336 buffer_pos += write_len; 337 338 // Note that the following does not depend on write_len. 339 // This means that position and count get updated 340 // even when overflow occurs. 341 update_position(s, len); 342 } 343 344 char* stringStream::as_string() { 345 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos + 1); 346 strncpy(copy, buffer, buffer_pos); 347 copy[buffer_pos] = 0; // terminating null 348 return copy; 349 } 350 351 stringStream::~stringStream() {} 352 353 xmlStream* xtty; 354 outputStream* tty; 355 outputStream* gclog_or_tty; 356 extern Mutex* tty_lock; 357 358 #define EXTRACHARLEN 32 359 #define CURRENTAPPX ".current" 360 #define FILENAMEBUFLEN 1024 361 // convert YYYY-MM-DD HH:MM:SS to YYYY-MM-DD_HH-MM-SS 362 char* get_datetime_string(char *buf, size_t len) { 363 os::local_time_string(buf, len); 364 int i = (int)strlen(buf); 365 while (i-- >= 0) { 366 if (buf[i] == ' ') buf[i] = '_'; 367 else if (buf[i] == ':') buf[i] = '-'; 368 } 369 return buf; 370 } 371 372 static const char* make_log_name_internal(const char* log_name, const char* force_directory, 373 int pid, const char* tms) { 374 const char* basename = log_name; 375 char file_sep = os::file_separator()[0]; 376 const char* cp; 377 char pid_text[32]; 378 379 for (cp = log_name; *cp != '\0'; cp++) { 380 if (*cp == '/' || *cp == file_sep) { 381 basename = cp + 1; 382 } 383 } 384 const char* nametail = log_name; 385 // Compute buffer length 386 size_t buffer_length; 387 if (force_directory != NULL) { 388 buffer_length = strlen(force_directory) + strlen(os::file_separator()) + 389 strlen(basename) + 1; 390 } else { 391 buffer_length = strlen(log_name) + 1; 392 } 393 394 // const char* star = strchr(basename, '*'); 395 const char* pts = strstr(basename, "%p"); 396 int pid_pos = (pts == NULL) ? -1 : (pts - nametail); 397 398 if (pid_pos >= 0) { 399 jio_snprintf(pid_text, sizeof(pid_text), "pid%u", pid); 400 buffer_length += strlen(pid_text); 401 } 402 403 pts = strstr(basename, "%t"); 404 int tms_pos = (pts == NULL) ? -1 : (pts - nametail); 405 if (tms_pos >= 0) { 406 buffer_length += strlen(tms); 407 } 408 409 // Create big enough buffer. 410 char *buf = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal); 411 412 strcpy(buf, ""); 413 if (force_directory != NULL) { 414 strcat(buf, force_directory); 415 strcat(buf, os::file_separator()); 416 nametail = basename; // completely skip directory prefix 417 } 418 419 // who is first, %p or %t? 420 int first = -1, second = -1; 421 const char *p1st = NULL; 422 const char *p2nd = NULL; 423 424 if (pid_pos >= 0 && tms_pos >= 0) { 425 // contains both %p and %t 426 if (pid_pos < tms_pos) { 427 // case foo%pbar%tmonkey.log 428 first = pid_pos; 429 p1st = pid_text; 430 second = tms_pos; 431 p2nd = tms; 432 } else { 433 // case foo%tbar%pmonkey.log 434 first = tms_pos; 435 p1st = tms; 436 second = pid_pos; 437 p2nd = pid_text; 438 } 439 } else if (pid_pos >= 0) { 440 // contains %p only 441 first = pid_pos; 442 p1st = pid_text; 443 } else if (tms_pos >= 0) { 444 // contains %t only 445 first = tms_pos; 446 p1st = tms; 447 } 448 449 int buf_pos = (int)strlen(buf); 450 const char* tail = nametail; 451 452 if (first >= 0) { 453 tail = nametail + first + 2; 454 strncpy(&buf[buf_pos], nametail, first); 455 strcpy(&buf[buf_pos + first], p1st); 456 buf_pos = (int)strlen(buf); 457 if (second >= 0) { 458 strncpy(&buf[buf_pos], tail, second - first - 2); 459 strcpy(&buf[buf_pos + second - first - 2], p2nd); 460 tail = nametail + second + 2; 461 } 462 } 463 strcat(buf, tail); // append rest of name, or all of name 464 return buf; 465 } 466 467 // log_name comes from -XX:LogFile=log_name or -Xloggc:log_name 468 // in log_name, %p => pipd1234 and 469 // %t => YYYY-MM-DD_HH-MM-SS 470 static const char* make_log_name(const char* log_name, const char* force_directory) { 471 char timestr[32]; 472 get_datetime_string(timestr, sizeof(timestr)); 473 return make_log_name_internal(log_name, force_directory, os::current_process_id(), 474 timestr); 475 } 476 477 #ifndef PRODUCT 478 void test_loggc_filename() { 479 int pid; 480 char tms[32]; 481 char i_result[FILENAMEBUFLEN]; 482 const char* o_result; 483 get_datetime_string(tms, sizeof(tms)); 484 pid = os::current_process_id(); 485 486 // test.log 487 jio_snprintf(i_result, sizeof(char)*FILENAMEBUFLEN, "test.log", tms); 488 o_result = make_log_name_internal("test.log", NULL, pid, tms); 489 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"test.log\", NULL)"); 490 FREE_C_HEAP_ARRAY(char, o_result, mtInternal); 491 492 // test-%t-%p.log 493 jio_snprintf(i_result, sizeof(char)*FILENAMEBUFLEN, "test-%s-pid%u.log", tms, pid); 494 o_result = make_log_name_internal("test-%t-%p.log", NULL, pid, tms); 495 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"test-%%t-%%p.log\", NULL)"); 496 FREE_C_HEAP_ARRAY(char, o_result, mtInternal); 497 498 // test-%t%p.log 499 jio_snprintf(i_result, sizeof(char)*FILENAMEBUFLEN, "test-%spid%u.log", tms, pid); 500 o_result = make_log_name_internal("test-%t%p.log", NULL, pid, tms); 501 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"test-%%t%%p.log\", NULL)"); 502 FREE_C_HEAP_ARRAY(char, o_result, mtInternal); 503 504 // %p%t.log 505 jio_snprintf(i_result, sizeof(char)*FILENAMEBUFLEN, "pid%u%s.log", pid, tms); 506 o_result = make_log_name_internal("%p%t.log", NULL, pid, tms); 507 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"%%p%%t.log\", NULL)"); 508 FREE_C_HEAP_ARRAY(char, o_result, mtInternal); 509 510 // %p-test.log 511 jio_snprintf(i_result, sizeof(char)*FILENAMEBUFLEN, "pid%u-test.log", pid); 512 o_result = make_log_name_internal("%p-test.log", NULL, pid, tms); 513 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"%%p-test.log\", NULL)"); 514 FREE_C_HEAP_ARRAY(char, o_result, mtInternal); 515 516 // %t.log 517 jio_snprintf(i_result, sizeof(char)*FILENAMEBUFLEN, "%s.log", tms); 518 o_result = make_log_name_internal("%t.log", NULL, pid, tms); 519 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"%%t.log\", NULL)"); 520 FREE_C_HEAP_ARRAY(char, o_result, mtInternal); 521 } 522 #endif // PRODUCT 523 524 fileStream::fileStream(const char* file_name) { 525 _file = fopen(file_name, "w"); 526 if (_file != NULL) { 527 _need_close = true; 528 } else { 529 warning("Cannot open file %s due to %s\n", file_name, strerror(errno)); 530 _need_close = false; 531 } 532 } 533 534 fileStream::fileStream(const char* file_name, const char* opentype) { 535 _file = fopen(file_name, opentype); 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 } 543 544 void fileStream::write(const char* s, size_t len) { 545 if (_file != NULL) { 546 // Make an unused local variable to avoid warning from gcc 4.x compiler. 547 size_t count = fwrite(s, 1, len, _file); 548 } 549 update_position(s, len); 550 } 551 552 long fileStream::fileSize() { 553 long size = -1; 554 if (_file != NULL) { 555 long pos = ::ftell(_file); 556 if (::fseek(_file, 0, SEEK_END) == 0) { 557 size = ::ftell(_file); 558 } 559 ::fseek(_file, pos, SEEK_SET); 560 } 561 return size; 562 } 563 564 char* fileStream::readln(char *data, int count ) { 565 char * ret = ::fgets(data, count, _file); 566 //Get rid of annoying \n char 567 data[::strlen(data)-1] = '\0'; 568 return ret; 569 } 570 571 fileStream::~fileStream() { 572 if (_file != NULL) { 573 if (_need_close) fclose(_file); 574 _file = NULL; 575 } 576 } 577 578 void fileStream::flush() { 579 fflush(_file); 580 } 581 582 fdStream::fdStream(const char* file_name) { 583 _fd = open(file_name, O_WRONLY | O_CREAT | O_TRUNC, 0666); 584 _need_close = true; 585 } 586 587 fdStream::~fdStream() { 588 if (_fd != -1) { 589 if (_need_close) close(_fd); 590 _fd = -1; 591 } 592 } 593 594 void fdStream::write(const char* s, size_t len) { 595 if (_fd != -1) { 596 // Make an unused local variable to avoid warning from gcc 4.x compiler. 597 size_t count = ::write(_fd, s, (int)len); 598 } 599 update_position(s, len); 600 } 601 602 // dump vm version, os version, platform info, build id, 603 // memory usage and command line flags into header 604 void gcLogFileStream::dump_loggc_header() { 605 if (is_open()) { 606 print_cr(Abstract_VM_Version::internal_vm_info_string()); 607 os::print_memory_info(this); 608 print("CommandLine flags: "); 609 CommandLineFlags::printSetFlags(this); 610 } 611 } 612 613 gcLogFileStream::~gcLogFileStream() { 614 if (_file != NULL) { 615 if (_need_close) fclose(_file); 616 _file = NULL; 617 } 618 if (_file_name != NULL) { 619 FREE_C_HEAP_ARRAY(char, _file_name, mtInternal); 620 _file_name = NULL; 621 } 622 } 623 624 gcLogFileStream::gcLogFileStream(const char* file_name) { 625 _cur_file_num = 0; 626 _bytes_written = 0L; 627 _file_name = make_log_name(file_name, NULL); 628 629 // gc log file rotation 630 if (UseGCLogFileRotation && NumberOfGCLogFiles > 1) { 631 char tempbuf[FILENAMEBUFLEN]; 632 jio_snprintf(tempbuf, sizeof(tempbuf), "%s.%d" CURRENTAPPX, _file_name, _cur_file_num); 633 _file = fopen(tempbuf, "w"); 634 } else { 635 _file = fopen(_file_name, "w"); 636 } 637 if (_file != NULL) { 638 _need_close = true; 639 dump_loggc_header(); 640 } else { 641 warning("Cannot open file %s due to %s\n", _file_name, strerror(errno)); 642 _need_close = false; 643 } 644 } 645 646 void gcLogFileStream::write(const char* s, size_t len) { 647 if (_file != NULL) { 648 size_t count = fwrite(s, 1, len, _file); 649 _bytes_written += count; 650 } 651 update_position(s, len); 652 } 653 654 // rotate_log must be called from VMThread at safepoint. In case need change parameters 655 // for gc log rotation from thread other than VMThread, a sub type of VM_Operation 656 // should be created and be submitted to VMThread's operation queue. DO NOT call this 657 // function directly. Currently, it is safe to rotate log at safepoint through VMThread. 658 // That is, no mutator threads and concurrent GC threads run parallel with VMThread to 659 // write to gc log file at safepoint. If in future, changes made for mutator threads or 660 // concurrent GC threads to run parallel with VMThread at safepoint, write and rotate_log 661 // must be synchronized. 662 void gcLogFileStream::rotate_log() { 663 char time_msg[FILENAMEBUFLEN]; 664 char time_str[EXTRACHARLEN]; 665 char current_file_name[FILENAMEBUFLEN]; 666 char renamed_file_name[FILENAMEBUFLEN]; 667 668 if (_bytes_written < (jlong)GCLogFileSize) { 669 return; 670 } 671 672 #ifdef ASSERT 673 Thread *thread = Thread::current(); 674 assert(thread == NULL || 675 (thread->is_VM_thread() && SafepointSynchronize::is_at_safepoint()), 676 "Must be VMThread at safepoint"); 677 #endif 678 if (NumberOfGCLogFiles == 1) { 679 // rotate in same file 680 rewind(); 681 _bytes_written = 0L; 682 jio_snprintf(time_msg, sizeof(time_msg), "File %s rotated at %s\n", 683 _file_name, os::local_time_string((char *)time_str, sizeof(time_str))); 684 write(time_msg, strlen(time_msg)); 685 dump_loggc_header(); 686 return; 687 } 688 689 #if defined(_WINDOWS) 690 #ifndef F_OK 691 #define F_OK 0 692 #endif 693 #endif // _WINDOWS 694 695 // rotate file in names extended_filename.0, extended_filename.1, ..., 696 // extended_filename.<NumberOfGCLogFiles - 1>. Current rotation file name will 697 // have a form of extended_filename.<i>.current where i is the current rotation 698 // file number. After it reaches max file size, the file will be saved and renamed 699 // with .current removed from its tail. 700 size_t filename_len = strlen(_file_name); 701 if (_file != NULL) { 702 jio_snprintf(renamed_file_name, filename_len + EXTRACHARLEN, "%s.%d", 703 _file_name, _cur_file_num); 704 jio_snprintf(current_file_name, filename_len + EXTRACHARLEN, "%s.%d" CURRENTAPPX, 705 _file_name, _cur_file_num); 706 jio_snprintf(time_msg, sizeof(time_msg), "%s GC log file has reached the" 707 " maximum size. Saved as %s\n", 708 os::local_time_string((char *)time_str, sizeof(time_str)), 709 renamed_file_name); 710 write(time_msg, strlen(time_msg)); 711 712 fclose(_file); 713 _file = NULL; 714 715 bool can_rename = true; 716 if (access(current_file_name, F_OK) != 0) { 717 // current file does not exist? 718 warning("No source file exists, cannot rename\n"); 719 can_rename = false; 720 } 721 if (can_rename) { 722 if (access(renamed_file_name, F_OK) == 0) { 723 if (remove(renamed_file_name) != 0) { 724 warning("Could not delete existing file %s\n", renamed_file_name); 725 can_rename = false; 726 } 727 } else { 728 // file does not exist, ok to rename 729 } 730 } 731 if (can_rename && rename(current_file_name, renamed_file_name) != 0) { 732 warning("Could not rename %s to %s\n", _file_name, renamed_file_name); 733 } 734 } 735 736 _cur_file_num++; 737 if (_cur_file_num > NumberOfGCLogFiles - 1) _cur_file_num = 0; 738 jio_snprintf(current_file_name, filename_len + EXTRACHARLEN, "%s.%d" CURRENTAPPX, 739 _file_name, _cur_file_num); 740 _file = fopen(current_file_name, "w"); 741 742 if (_file != NULL) { 743 _bytes_written = 0L; 744 _need_close = true; 745 // reuse current_file_name for time_msg 746 jio_snprintf(current_file_name, filename_len + EXTRACHARLEN, 747 "%s.%d", _file_name, _cur_file_num); 748 jio_snprintf(time_msg, sizeof(time_msg), "%s GC log file created %s\n", 749 os::local_time_string((char *)time_str, sizeof(time_str)), 750 current_file_name); 751 write(time_msg, strlen(time_msg)); 752 dump_loggc_header(); 753 // remove the existing file 754 if (access(current_file_name, F_OK) == 0) { 755 if (remove(current_file_name) != 0) { 756 warning("Could not delete existing file %s\n", current_file_name); 757 } 758 } 759 } else { 760 warning("failed to open rotation log file %s due to %s\n" 761 "Turned off GC log file rotation\n", 762 _file_name, strerror(errno)); 763 _need_close = false; 764 FLAG_SET_DEFAULT(UseGCLogFileRotation, false); 765 } 766 } 767 768 defaultStream* defaultStream::instance = NULL; 769 int defaultStream::_output_fd = 1; 770 int defaultStream::_error_fd = 2; 771 FILE* defaultStream::_output_stream = stdout; 772 FILE* defaultStream::_error_stream = stderr; 773 774 #define LOG_MAJOR_VERSION 160 775 #define LOG_MINOR_VERSION 1 776 777 void defaultStream::init() { 778 _inited = true; 779 if (LogVMOutput || LogCompilation) { 780 init_log(); 781 } 782 } 783 784 bool defaultStream::has_log_file() { 785 // lazily create log file (at startup, LogVMOutput is false even 786 // if +LogVMOutput is used, because the flags haven't been parsed yet) 787 // For safer printing during fatal error handling, do not init logfile 788 // if a VM error has been reported. 789 if (!_inited && !is_error_reported()) init(); 790 return _log_file != NULL; 791 } 792 793 void defaultStream::init_log() { 794 // %%% Need a MutexLocker? 795 const char* log_name = LogFile != NULL ? LogFile : "hotspot_pid%p.log"; 796 const char* try_name = make_log_name(log_name, NULL); 797 fileStream* file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name); 798 if (!file->is_open()) { 799 // Try again to open the file. 800 char warnbuf[O_BUFLEN*2]; 801 jio_snprintf(warnbuf, sizeof(warnbuf), 802 "Warning: Cannot open log file: %s\n", try_name); 803 // Note: This feature is for maintainer use only. No need for L10N. 804 jio_print(warnbuf); 805 FREE_C_HEAP_ARRAY(char, try_name, mtInternal); 806 try_name = make_log_name(log_name, os::get_temp_directory()); 807 jio_snprintf(warnbuf, sizeof(warnbuf), 808 "Warning: Forcing option -XX:LogFile=%s\n", try_name); 809 jio_print(warnbuf); 810 delete file; 811 file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name); 812 } 813 FREE_C_HEAP_ARRAY(char, try_name, mtInternal); 814 815 if (file->is_open()) { 816 _log_file = file; 817 xmlStream* xs = new(ResourceObj::C_HEAP, mtInternal) xmlStream(file); 818 _outer_xmlStream = xs; 819 if (this == tty) xtty = xs; 820 // Write XML header. 821 xs->print_cr("<?xml version='1.0' encoding='UTF-8'?>"); 822 // (For now, don't bother to issue a DTD for this private format.) 823 jlong time_ms = os::javaTimeMillis() - tty->time_stamp().milliseconds(); 824 // %%% Should be: jlong time_ms = os::start_time_milliseconds(), if 825 // we ever get round to introduce that method on the os class 826 xs->head("hotspot_log version='%d %d'" 827 " process='%d' time_ms='"INT64_FORMAT"'", 828 LOG_MAJOR_VERSION, LOG_MINOR_VERSION, 829 os::current_process_id(), time_ms); 830 // Write VM version header immediately. 831 xs->head("vm_version"); 832 xs->head("name"); xs->text("%s", VM_Version::vm_name()); xs->cr(); 833 xs->tail("name"); 834 xs->head("release"); xs->text("%s", VM_Version::vm_release()); xs->cr(); 835 xs->tail("release"); 836 xs->head("info"); xs->text("%s", VM_Version::internal_vm_info_string()); xs->cr(); 837 xs->tail("info"); 838 xs->tail("vm_version"); 839 // Record information about the command-line invocation. 840 xs->head("vm_arguments"); // Cf. Arguments::print_on() 841 if (Arguments::num_jvm_flags() > 0) { 842 xs->head("flags"); 843 Arguments::print_jvm_flags_on(xs->text()); 844 xs->tail("flags"); 845 } 846 if (Arguments::num_jvm_args() > 0) { 847 xs->head("args"); 848 Arguments::print_jvm_args_on(xs->text()); 849 xs->tail("args"); 850 } 851 if (Arguments::java_command() != NULL) { 852 xs->head("command"); xs->text()->print_cr("%s", Arguments::java_command()); 853 xs->tail("command"); 854 } 855 if (Arguments::sun_java_launcher() != NULL) { 856 xs->head("launcher"); xs->text()->print_cr("%s", Arguments::sun_java_launcher()); 857 xs->tail("launcher"); 858 } 859 if (Arguments::system_properties() != NULL) { 860 xs->head("properties"); 861 // Print it as a java-style property list. 862 // System properties don't generally contain newlines, so don't bother with unparsing. 863 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { 864 xs->text()->print_cr("%s=%s", p->key(), p->value()); 865 } 866 xs->tail("properties"); 867 } 868 xs->tail("vm_arguments"); 869 // tty output per se is grouped under the <tty>...</tty> element. 870 xs->head("tty"); 871 // All further non-markup text gets copied to the tty: 872 xs->_text = this; // requires friend declaration! 873 } else { 874 delete(file); 875 // and leave xtty as NULL 876 LogVMOutput = false; 877 DisplayVMOutput = true; 878 LogCompilation = false; 879 } 880 } 881 882 // finish_log() is called during normal VM shutdown. finish_log_on_error() is 883 // called by ostream_abort() after a fatal error. 884 // 885 void defaultStream::finish_log() { 886 xmlStream* xs = _outer_xmlStream; 887 xs->done("tty"); 888 889 // Other log forks are appended here, at the End of Time: 890 CompileLog::finish_log(xs->out()); // write compile logging, if any, now 891 892 xs->done("hotspot_log"); 893 xs->flush(); 894 895 fileStream* file = _log_file; 896 _log_file = NULL; 897 898 delete _outer_xmlStream; 899 _outer_xmlStream = NULL; 900 901 file->flush(); 902 delete file; 903 } 904 905 void defaultStream::finish_log_on_error(char *buf, int buflen) { 906 xmlStream* xs = _outer_xmlStream; 907 908 if (xs && xs->out()) { 909 910 xs->done_raw("tty"); 911 912 // Other log forks are appended here, at the End of Time: 913 CompileLog::finish_log_on_error(xs->out(), buf, buflen); // write compile logging, if any, now 914 915 xs->done_raw("hotspot_log"); 916 xs->flush(); 917 918 fileStream* file = _log_file; 919 _log_file = NULL; 920 _outer_xmlStream = NULL; 921 922 if (file) { 923 file->flush(); 924 925 // Can't delete or close the file because delete and fclose aren't 926 // async-safe. We are about to die, so leave it to the kernel. 927 // delete file; 928 } 929 } 930 } 931 932 intx defaultStream::hold(intx writer_id) { 933 bool has_log = has_log_file(); // check before locking 934 if (// impossible, but who knows? 935 writer_id == NO_WRITER || 936 937 // bootstrap problem 938 tty_lock == NULL || 939 940 // can't grab a lock or call Thread::current() if TLS isn't initialized 941 ThreadLocalStorage::thread() == NULL || 942 943 // developer hook 944 !SerializeVMOutput || 945 946 // VM already unhealthy 947 is_error_reported() || 948 949 // safepoint == global lock (for VM only) 950 (SafepointSynchronize::is_synchronizing() && 951 Thread::current()->is_VM_thread()) 952 ) { 953 // do not attempt to lock unless we know the thread and the VM is healthy 954 return NO_WRITER; 955 } 956 if (_writer == writer_id) { 957 // already held, no need to re-grab the lock 958 return NO_WRITER; 959 } 960 tty_lock->lock_without_safepoint_check(); 961 // got the lock 962 if (writer_id != _last_writer) { 963 if (has_log) { 964 _log_file->bol(); 965 // output a hint where this output is coming from: 966 _log_file->print_cr("<writer thread='" UINTX_FORMAT "'/>", writer_id); 967 } 968 _last_writer = writer_id; 969 } 970 _writer = writer_id; 971 return writer_id; 972 } 973 974 void defaultStream::release(intx holder) { 975 if (holder == NO_WRITER) { 976 // nothing to release: either a recursive lock, or we scribbled (too bad) 977 return; 978 } 979 if (_writer != holder) { 980 return; // already unlocked, perhaps via break_tty_lock_for_safepoint 981 } 982 _writer = NO_WRITER; 983 tty_lock->unlock(); 984 } 985 986 987 // Yuck: jio_print does not accept char*/len. 988 static void call_jio_print(const char* s, size_t len) { 989 char buffer[O_BUFLEN+100]; 990 if (len > sizeof(buffer)-1) { 991 warning("increase O_BUFLEN in ostream.cpp -- output truncated"); 992 len = sizeof(buffer)-1; 993 } 994 strncpy(buffer, s, len); 995 buffer[len] = '\0'; 996 jio_print(buffer); 997 } 998 999 1000 void defaultStream::write(const char* s, size_t len) { 1001 intx thread_id = os::current_thread_id(); 1002 intx holder = hold(thread_id); 1003 1004 if (DisplayVMOutput && 1005 (_outer_xmlStream == NULL || !_outer_xmlStream->inside_attrs())) { 1006 // print to output stream. It can be redirected by a vfprintf hook 1007 if (s[len] == '\0') { 1008 jio_print(s); 1009 } else { 1010 call_jio_print(s, len); 1011 } 1012 } 1013 1014 // print to log file 1015 if (has_log_file()) { 1016 int nl0 = _newlines; 1017 xmlTextStream::write(s, len); 1018 // flush the log file too, if there were any newlines 1019 if (nl0 != _newlines){ 1020 flush(); 1021 } 1022 } else { 1023 update_position(s, len); 1024 } 1025 1026 release(holder); 1027 } 1028 1029 intx ttyLocker::hold_tty() { 1030 if (defaultStream::instance == NULL) return defaultStream::NO_WRITER; 1031 intx thread_id = os::current_thread_id(); 1032 return defaultStream::instance->hold(thread_id); 1033 } 1034 1035 void ttyLocker::release_tty(intx holder) { 1036 if (holder == defaultStream::NO_WRITER) return; 1037 defaultStream::instance->release(holder); 1038 } 1039 1040 bool ttyLocker::release_tty_if_locked() { 1041 intx thread_id = os::current_thread_id(); 1042 if (defaultStream::instance->writer() == thread_id) { 1043 // release the lock and return true so callers know if was 1044 // previously held. 1045 release_tty(thread_id); 1046 return true; 1047 } 1048 return false; 1049 } 1050 1051 void ttyLocker::break_tty_lock_for_safepoint(intx holder) { 1052 if (defaultStream::instance != NULL && 1053 defaultStream::instance->writer() == holder) { 1054 if (xtty != NULL) { 1055 xtty->print_cr("<!-- safepoint while printing -->"); 1056 } 1057 defaultStream::instance->release(holder); 1058 } 1059 // (else there was no lock to break) 1060 } 1061 1062 void ostream_init() { 1063 if (defaultStream::instance == NULL) { 1064 defaultStream::instance = new(ResourceObj::C_HEAP, mtInternal) defaultStream(); 1065 tty = defaultStream::instance; 1066 1067 // We want to ensure that time stamps in GC logs consider time 0 1068 // the time when the JVM is initialized, not the first time we ask 1069 // for a time stamp. So, here, we explicitly update the time stamp 1070 // of tty. 1071 tty->time_stamp().update_to(1); 1072 } 1073 } 1074 1075 void ostream_init_log() { 1076 // For -Xloggc:<file> option - called in runtime/thread.cpp 1077 // Note : this must be called AFTER ostream_init() 1078 1079 gclog_or_tty = tty; // default to tty 1080 if (Arguments::gc_log_filename() != NULL) { 1081 fileStream * gclog = new(ResourceObj::C_HEAP, mtInternal) 1082 gcLogFileStream(Arguments::gc_log_filename()); 1083 if (gclog->is_open()) { 1084 // now we update the time stamp of the GC log to be synced up 1085 // with tty. 1086 gclog->time_stamp().update_to(tty->time_stamp().ticks()); 1087 } 1088 gclog_or_tty = gclog; 1089 } 1090 1091 // If we haven't lazily initialized the logfile yet, do it now, 1092 // to avoid the possibility of lazy initialization during a VM 1093 // crash, which can affect the stability of the fatal error handler. 1094 defaultStream::instance->has_log_file(); 1095 } 1096 1097 // ostream_exit() is called during normal VM exit to finish log files, flush 1098 // output and free resource. 1099 void ostream_exit() { 1100 static bool ostream_exit_called = false; 1101 if (ostream_exit_called) return; 1102 ostream_exit_called = true; 1103 if (gclog_or_tty != tty) { 1104 delete gclog_or_tty; 1105 } 1106 { 1107 // we temporaly disable PrintMallocFree here 1108 // as otherwise it'll lead to using of almost deleted 1109 // tty or defaultStream::instance in logging facility 1110 // of HeapFree(), see 6391258 1111 DEBUG_ONLY(FlagSetting fs(PrintMallocFree, false);) 1112 if (tty != defaultStream::instance) { 1113 delete tty; 1114 } 1115 if (defaultStream::instance != NULL) { 1116 delete defaultStream::instance; 1117 } 1118 } 1119 tty = NULL; 1120 xtty = NULL; 1121 gclog_or_tty = NULL; 1122 defaultStream::instance = NULL; 1123 } 1124 1125 // ostream_abort() is called by os::abort() when VM is about to die. 1126 void ostream_abort() { 1127 // Here we can't delete gclog_or_tty and tty, just flush their output 1128 if (gclog_or_tty) gclog_or_tty->flush(); 1129 if (tty) tty->flush(); 1130 1131 if (defaultStream::instance != NULL) { 1132 static char buf[4096]; 1133 defaultStream::instance->finish_log_on_error(buf, sizeof(buf)); 1134 } 1135 } 1136 1137 staticBufferStream::staticBufferStream(char* buffer, size_t buflen, 1138 outputStream *outer_stream) { 1139 _buffer = buffer; 1140 _buflen = buflen; 1141 _outer_stream = outer_stream; 1142 // compile task prints time stamp relative to VM start 1143 _stamp.update_to(1); 1144 } 1145 1146 void staticBufferStream::write(const char* c, size_t len) { 1147 _outer_stream->print_raw(c, (int)len); 1148 } 1149 1150 void staticBufferStream::flush() { 1151 _outer_stream->flush(); 1152 } 1153 1154 void staticBufferStream::print(const char* format, ...) { 1155 va_list ap; 1156 va_start(ap, format); 1157 size_t len; 1158 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, false, len); 1159 write(str, len); 1160 va_end(ap); 1161 } 1162 1163 void staticBufferStream::print_cr(const char* format, ...) { 1164 va_list ap; 1165 va_start(ap, format); 1166 size_t len; 1167 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, true, len); 1168 write(str, len); 1169 va_end(ap); 1170 } 1171 1172 void staticBufferStream::vprint(const char *format, va_list argptr) { 1173 size_t len; 1174 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, false, len); 1175 write(str, len); 1176 } 1177 1178 void staticBufferStream::vprint_cr(const char* format, va_list argptr) { 1179 size_t len; 1180 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, true, len); 1181 write(str, len); 1182 } 1183 1184 bufferedStream::bufferedStream(size_t initial_size, size_t bufmax) : outputStream() { 1185 buffer_length = initial_size; 1186 buffer = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal); 1187 buffer_pos = 0; 1188 buffer_fixed = false; 1189 buffer_max = bufmax; 1190 } 1191 1192 bufferedStream::bufferedStream(char* fixed_buffer, size_t fixed_buffer_size, size_t bufmax) : outputStream() { 1193 buffer_length = fixed_buffer_size; 1194 buffer = fixed_buffer; 1195 buffer_pos = 0; 1196 buffer_fixed = true; 1197 buffer_max = bufmax; 1198 } 1199 1200 void bufferedStream::write(const char* s, size_t len) { 1201 1202 if(buffer_pos + len > buffer_max) { 1203 flush(); 1204 } 1205 1206 size_t end = buffer_pos + len; 1207 if (end >= buffer_length) { 1208 if (buffer_fixed) { 1209 // if buffer cannot resize, silently truncate 1210 len = buffer_length - buffer_pos - 1; 1211 } else { 1212 // For small overruns, double the buffer. For larger ones, 1213 // increase to the requested size. 1214 if (end < buffer_length * 2) { 1215 end = buffer_length * 2; 1216 } 1217 buffer = REALLOC_C_HEAP_ARRAY(char, buffer, end, mtInternal); 1218 buffer_length = end; 1219 } 1220 } 1221 memcpy(buffer + buffer_pos, s, len); 1222 buffer_pos += len; 1223 update_position(s, len); 1224 } 1225 1226 char* bufferedStream::as_string() { 1227 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1); 1228 strncpy(copy, buffer, buffer_pos); 1229 copy[buffer_pos] = 0; // terminating null 1230 return copy; 1231 } 1232 1233 bufferedStream::~bufferedStream() { 1234 if (!buffer_fixed) { 1235 FREE_C_HEAP_ARRAY(char, buffer, mtInternal); 1236 } 1237 } 1238 1239 #ifndef PRODUCT 1240 1241 #if defined(SOLARIS) || defined(LINUX) || defined(_ALLBSD_SOURCE) 1242 #include <sys/types.h> 1243 #include <sys/socket.h> 1244 #include <netinet/in.h> 1245 #include <arpa/inet.h> 1246 #endif 1247 1248 // Network access 1249 networkStream::networkStream() : bufferedStream(1024*10, 1024*10) { 1250 1251 _socket = -1; 1252 1253 int result = os::socket(AF_INET, SOCK_STREAM, 0); 1254 if (result <= 0) { 1255 assert(false, "Socket could not be created!"); 1256 } else { 1257 _socket = result; 1258 } 1259 } 1260 1261 int networkStream::read(char *buf, size_t len) { 1262 return os::recv(_socket, buf, (int)len, 0); 1263 } 1264 1265 void networkStream::flush() { 1266 if (size() != 0) { 1267 int result = os::raw_send(_socket, (char *)base(), size(), 0); 1268 assert(result != -1, "connection error"); 1269 assert(result == (int)size(), "didn't send enough data"); 1270 } 1271 reset(); 1272 } 1273 1274 networkStream::~networkStream() { 1275 close(); 1276 } 1277 1278 void networkStream::close() { 1279 if (_socket != -1) { 1280 flush(); 1281 os::socket_close(_socket); 1282 _socket = -1; 1283 } 1284 } 1285 1286 bool networkStream::connect(const char *ip, short port) { 1287 1288 struct sockaddr_in server; 1289 server.sin_family = AF_INET; 1290 server.sin_port = htons(port); 1291 1292 server.sin_addr.s_addr = inet_addr(ip); 1293 if (server.sin_addr.s_addr == (uint32_t)-1) { 1294 struct hostent* host = os::get_host_by_name((char*)ip); 1295 if (host != NULL) { 1296 memcpy(&server.sin_addr, host->h_addr_list[0], host->h_length); 1297 } else { 1298 return false; 1299 } 1300 } 1301 1302 1303 int result = os::connect(_socket, (struct sockaddr*)&server, sizeof(struct sockaddr_in)); 1304 return (result >= 0); 1305 } 1306 1307 #endif