ostream.cpp revision 7426:0f6100dde08e
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/macros.hpp" 34#include "utilities/ostream.hpp" 35#include "utilities/top.hpp" 36#include "utilities/xmlstream.hpp" 37 38extern "C" void jio_print(const char* s); // Declarationtion of jvm method 39 40outputStream::outputStream(int width) { 41 _width = width; 42 _position = 0; 43 _newlines = 0; 44 _precount = 0; 45 _indentation = 0; 46} 47 48outputStream::outputStream(int width, bool has_time_stamps) { 49 _width = width; 50 _position = 0; 51 _newlines = 0; 52 _precount = 0; 53 _indentation = 0; 54 if (has_time_stamps) _stamp.update(); 55} 56 57void outputStream::update_position(const char* s, size_t len) { 58 for (size_t i = 0; i < len; i++) { 59 char ch = s[i]; 60 if (ch == '\n') { 61 _newlines += 1; 62 _precount += _position + 1; 63 _position = 0; 64 } else if (ch == '\t') { 65 int tw = 8 - (_position & 7); 66 _position += tw; 67 _precount -= tw-1; // invariant: _precount + _position == total count 68 } else { 69 _position += 1; 70 } 71 } 72} 73 74// Execute a vsprintf, using the given buffer if necessary. 75// Return a pointer to the formatted string. 76const char* outputStream::do_vsnprintf(char* buffer, size_t buflen, 77 const char* format, va_list ap, 78 bool add_cr, 79 size_t& result_len) { 80 assert(buflen >= 2, "buffer too small"); 81 82 const char* result; 83 if (add_cr) buflen--; 84 if (!strchr(format, '%')) { 85 // constant format string 86 result = format; 87 result_len = strlen(result); 88 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate 89 } else if (format[0] == '%' && format[1] == 's' && format[2] == '\0') { 90 // trivial copy-through format string 91 result = va_arg(ap, const char*); 92 result_len = strlen(result); 93 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate 94 } else { 95 // Handle truncation: 96 // posix: upon truncation, vsnprintf returns number of bytes which 97 // would have been written (excluding terminating zero) had the buffer 98 // been large enough 99 // windows: upon truncation, vsnprintf returns -1 100 const int written = vsnprintf(buffer, buflen, format, ap); 101 result = buffer; 102 if (written < (int) buflen && written >= 0) { 103 result_len = written; 104 } else { 105 DEBUG_ONLY(warning("increase O_BUFLEN in ostream.hpp -- output truncated");) 106 result_len = buflen - 1; 107 buffer[result_len] = 0; 108 } 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::gclog_stamp(const GCId& gc_id) { 242 date_stamp(PrintGCDateStamps); 243 stamp(PrintGCTimeStamps); 244 if (PrintGCID) { 245 print("#%u: ", gc_id.id()); 246 } 247} 248 249outputStream& outputStream::indent() { 250 while (_position < _indentation) sp(); 251 return *this; 252} 253 254void outputStream::print_jlong(jlong value) { 255 print(JLONG_FORMAT, value); 256} 257 258void outputStream::print_julong(julong value) { 259 print(JULONG_FORMAT, value); 260} 261 262/** 263 * This prints out hex data in a 'windbg' or 'xxd' form, where each line is: 264 * <hex-address>: 8 * <hex-halfword> <ascii translation (optional)> 265 * example: 266 * 0000000: 7f44 4f46 0102 0102 0000 0000 0000 0000 .DOF............ 267 * 0000010: 0000 0000 0000 0040 0000 0020 0000 0005 .......@... .... 268 * 0000020: 0000 0000 0000 0040 0000 0000 0000 015d .......@.......] 269 * ... 270 * 271 * indent is applied to each line. Ends with a CR. 272 */ 273void outputStream::print_data(void* data, size_t len, bool with_ascii) { 274 size_t limit = (len + 16) / 16 * 16; 275 for (size_t i = 0; i < limit; ++i) { 276 if (i % 16 == 0) { 277 indent().print(INTPTR_FORMAT_W(07)":", i); 278 } 279 if (i % 2 == 0) { 280 print(" "); 281 } 282 if (i < len) { 283 print("%02x", ((unsigned char*)data)[i]); 284 } else { 285 print(" "); 286 } 287 if ((i + 1) % 16 == 0) { 288 if (with_ascii) { 289 print(" "); 290 for (size_t j = 0; j < 16; ++j) { 291 size_t idx = i + j - 15; 292 if (idx < len) { 293 char c = ((char*)data)[idx]; 294 print("%c", c >= 32 && c <= 126 ? c : '.'); 295 } 296 } 297 } 298 cr(); 299 } 300 } 301} 302 303stringStream::stringStream(size_t initial_size) : outputStream() { 304 buffer_length = initial_size; 305 buffer = NEW_RESOURCE_ARRAY(char, buffer_length); 306 buffer_pos = 0; 307 buffer_fixed = false; 308 DEBUG_ONLY(rm = Thread::current()->current_resource_mark();) 309} 310 311// useful for output to fixed chunks of memory, such as performance counters 312stringStream::stringStream(char* fixed_buffer, size_t fixed_buffer_size) : outputStream() { 313 buffer_length = fixed_buffer_size; 314 buffer = fixed_buffer; 315 buffer_pos = 0; 316 buffer_fixed = true; 317} 318 319void stringStream::write(const char* s, size_t len) { 320 size_t write_len = len; // number of non-null bytes to write 321 size_t end = buffer_pos + len + 1; // position after write and final '\0' 322 if (end > buffer_length) { 323 if (buffer_fixed) { 324 // if buffer cannot resize, silently truncate 325 end = buffer_length; 326 write_len = end - buffer_pos - 1; // leave room for the final '\0' 327 } else { 328 // For small overruns, double the buffer. For larger ones, 329 // increase to the requested size. 330 if (end < buffer_length * 2) { 331 end = buffer_length * 2; 332 } 333 char* oldbuf = buffer; 334 assert(rm == NULL || Thread::current()->current_resource_mark() == rm, 335 "stringStream is re-allocated with a different ResourceMark"); 336 buffer = NEW_RESOURCE_ARRAY(char, end); 337 strncpy(buffer, oldbuf, buffer_pos); 338 buffer_length = end; 339 } 340 } 341 // invariant: buffer is always null-terminated 342 guarantee(buffer_pos + write_len + 1 <= buffer_length, "stringStream oob"); 343 buffer[buffer_pos + write_len] = 0; 344 strncpy(buffer + buffer_pos, s, write_len); 345 buffer_pos += write_len; 346 347 // Note that the following does not depend on write_len. 348 // This means that position and count get updated 349 // even when overflow occurs. 350 update_position(s, len); 351} 352 353char* stringStream::as_string() { 354 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos + 1); 355 strncpy(copy, buffer, buffer_pos); 356 copy[buffer_pos] = 0; // terminating null 357 return copy; 358} 359 360stringStream::~stringStream() {} 361 362xmlStream* xtty; 363outputStream* tty; 364outputStream* gclog_or_tty; 365CDS_ONLY(fileStream* classlist_file;) // Only dump the classes that can be stored into the CDS archive 366extern Mutex* tty_lock; 367 368#define EXTRACHARLEN 32 369#define CURRENTAPPX ".current" 370#define FILENAMEBUFLEN 1024 371// convert YYYY-MM-DD HH:MM:SS to YYYY-MM-DD_HH-MM-SS 372char* get_datetime_string(char *buf, size_t len) { 373 os::local_time_string(buf, len); 374 int i = (int)strlen(buf); 375 while (i-- >= 0) { 376 if (buf[i] == ' ') buf[i] = '_'; 377 else if (buf[i] == ':') buf[i] = '-'; 378 } 379 return buf; 380} 381 382static const char* make_log_name_internal(const char* log_name, const char* force_directory, 383 int pid, const char* tms) { 384 const char* basename = log_name; 385 char file_sep = os::file_separator()[0]; 386 const char* cp; 387 char pid_text[32]; 388 389 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 // Compute buffer length 396 size_t buffer_length; 397 if (force_directory != NULL) { 398 buffer_length = strlen(force_directory) + strlen(os::file_separator()) + 399 strlen(basename) + 1; 400 } else { 401 buffer_length = strlen(log_name) + 1; 402 } 403 404 // const char* star = strchr(basename, '*'); 405 const char* pts = strstr(basename, "%p"); 406 int pid_pos = (pts == NULL) ? -1 : (pts - nametail); 407 408 if (pid_pos >= 0) { 409 jio_snprintf(pid_text, sizeof(pid_text), "pid%u", pid); 410 buffer_length += strlen(pid_text); 411 } 412 413 pts = strstr(basename, "%t"); 414 int tms_pos = (pts == NULL) ? -1 : (pts - nametail); 415 if (tms_pos >= 0) { 416 buffer_length += strlen(tms); 417 } 418 419 // Create big enough buffer. 420 char *buf = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal); 421 422 strcpy(buf, ""); 423 if (force_directory != NULL) { 424 strcat(buf, force_directory); 425 strcat(buf, os::file_separator()); 426 nametail = basename; // completely skip directory prefix 427 } 428 429 // who is first, %p or %t? 430 int first = -1, second = -1; 431 const char *p1st = NULL; 432 const char *p2nd = NULL; 433 434 if (pid_pos >= 0 && tms_pos >= 0) { 435 // contains both %p and %t 436 if (pid_pos < tms_pos) { 437 // case foo%pbar%tmonkey.log 438 first = pid_pos; 439 p1st = pid_text; 440 second = tms_pos; 441 p2nd = tms; 442 } else { 443 // case foo%tbar%pmonkey.log 444 first = tms_pos; 445 p1st = tms; 446 second = pid_pos; 447 p2nd = pid_text; 448 } 449 } else if (pid_pos >= 0) { 450 // contains %p only 451 first = pid_pos; 452 p1st = pid_text; 453 } else if (tms_pos >= 0) { 454 // contains %t only 455 first = tms_pos; 456 p1st = tms; 457 } 458 459 int buf_pos = (int)strlen(buf); 460 const char* tail = nametail; 461 462 if (first >= 0) { 463 tail = nametail + first + 2; 464 strncpy(&buf[buf_pos], nametail, first); 465 strcpy(&buf[buf_pos + first], p1st); 466 buf_pos = (int)strlen(buf); 467 if (second >= 0) { 468 strncpy(&buf[buf_pos], tail, second - first - 2); 469 strcpy(&buf[buf_pos + second - first - 2], p2nd); 470 tail = nametail + second + 2; 471 } 472 } 473 strcat(buf, tail); // append rest of name, or all of name 474 return buf; 475} 476 477// log_name comes from -XX:LogFile=log_name, -Xloggc:log_name or 478// -XX:DumpLoadedClassList=<file_name> 479// in log_name, %p => pid1234 and 480// %t => YYYY-MM-DD_HH-MM-SS 481static const char* make_log_name(const char* log_name, const char* force_directory) { 482 char timestr[32]; 483 get_datetime_string(timestr, sizeof(timestr)); 484 return make_log_name_internal(log_name, force_directory, os::current_process_id(), 485 timestr); 486} 487 488#ifndef PRODUCT 489void test_loggc_filename() { 490 int pid; 491 char tms[32]; 492 char i_result[FILENAMEBUFLEN]; 493 const char* o_result; 494 get_datetime_string(tms, sizeof(tms)); 495 pid = os::current_process_id(); 496 497 // test.log 498 jio_snprintf(i_result, sizeof(char)*FILENAMEBUFLEN, "test.log", tms); 499 o_result = make_log_name_internal("test.log", NULL, pid, tms); 500 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"test.log\", NULL)"); 501 FREE_C_HEAP_ARRAY(char, o_result, mtInternal); 502 503 // test-%t-%p.log 504 jio_snprintf(i_result, sizeof(char)*FILENAMEBUFLEN, "test-%s-pid%u.log", tms, pid); 505 o_result = make_log_name_internal("test-%t-%p.log", NULL, pid, tms); 506 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"test-%%t-%%p.log\", NULL)"); 507 FREE_C_HEAP_ARRAY(char, o_result, mtInternal); 508 509 // test-%t%p.log 510 jio_snprintf(i_result, sizeof(char)*FILENAMEBUFLEN, "test-%spid%u.log", tms, pid); 511 o_result = make_log_name_internal("test-%t%p.log", NULL, pid, tms); 512 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"test-%%t%%p.log\", NULL)"); 513 FREE_C_HEAP_ARRAY(char, o_result, mtInternal); 514 515 // %p%t.log 516 jio_snprintf(i_result, sizeof(char)*FILENAMEBUFLEN, "pid%u%s.log", pid, tms); 517 o_result = make_log_name_internal("%p%t.log", NULL, pid, tms); 518 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"%%p%%t.log\", NULL)"); 519 FREE_C_HEAP_ARRAY(char, o_result, mtInternal); 520 521 // %p-test.log 522 jio_snprintf(i_result, sizeof(char)*FILENAMEBUFLEN, "pid%u-test.log", pid); 523 o_result = make_log_name_internal("%p-test.log", NULL, pid, tms); 524 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"%%p-test.log\", NULL)"); 525 FREE_C_HEAP_ARRAY(char, o_result, mtInternal); 526 527 // %t.log 528 jio_snprintf(i_result, sizeof(char)*FILENAMEBUFLEN, "%s.log", tms); 529 o_result = make_log_name_internal("%t.log", NULL, pid, tms); 530 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"%%t.log\", NULL)"); 531 FREE_C_HEAP_ARRAY(char, o_result, mtInternal); 532} 533#endif // PRODUCT 534 535fileStream::fileStream(const char* file_name) { 536 _file = fopen(file_name, "w"); 537 if (_file != NULL) { 538 _need_close = true; 539 } else { 540 warning("Cannot open file %s due to %s\n", file_name, strerror(errno)); 541 _need_close = false; 542 } 543} 544 545fileStream::fileStream(const char* file_name, const char* opentype) { 546 _file = fopen(file_name, opentype); 547 if (_file != NULL) { 548 _need_close = true; 549 } else { 550 warning("Cannot open file %s due to %s\n", file_name, strerror(errno)); 551 _need_close = false; 552 } 553} 554 555void fileStream::write(const char* s, size_t len) { 556 if (_file != NULL) { 557 // Make an unused local variable to avoid warning from gcc 4.x compiler. 558 size_t count = fwrite(s, 1, len, _file); 559 } 560 update_position(s, len); 561} 562 563long fileStream::fileSize() { 564 long size = -1; 565 if (_file != NULL) { 566 long pos = ::ftell(_file); 567 if (::fseek(_file, 0, SEEK_END) == 0) { 568 size = ::ftell(_file); 569 } 570 ::fseek(_file, pos, SEEK_SET); 571 } 572 return size; 573} 574 575char* fileStream::readln(char *data, int count ) { 576 char * ret = ::fgets(data, count, _file); 577 //Get rid of annoying \n char 578 data[::strlen(data)-1] = '\0'; 579 return ret; 580} 581 582fileStream::~fileStream() { 583 if (_file != NULL) { 584 if (_need_close) fclose(_file); 585 _file = NULL; 586 } 587} 588 589void fileStream::flush() { 590 fflush(_file); 591} 592 593fdStream::fdStream(const char* file_name) { 594 _fd = open(file_name, O_WRONLY | O_CREAT | O_TRUNC, 0666); 595 _need_close = true; 596} 597 598fdStream::~fdStream() { 599 if (_fd != -1) { 600 if (_need_close) close(_fd); 601 _fd = -1; 602 } 603} 604 605void fdStream::write(const char* s, size_t len) { 606 if (_fd != -1) { 607 // Make an unused local variable to avoid warning from gcc 4.x compiler. 608 size_t count = ::write(_fd, s, (int)len); 609 } 610 update_position(s, len); 611} 612 613// dump vm version, os version, platform info, build id, 614// memory usage and command line flags into header 615void gcLogFileStream::dump_loggc_header() { 616 if (is_open()) { 617 print_cr("%s", Abstract_VM_Version::internal_vm_info_string()); 618 os::print_memory_info(this); 619 print("CommandLine flags: "); 620 CommandLineFlags::printSetFlags(this); 621 } 622} 623 624gcLogFileStream::~gcLogFileStream() { 625 if (_file != NULL) { 626 if (_need_close) fclose(_file); 627 _file = NULL; 628 } 629 if (_file_name != NULL) { 630 FREE_C_HEAP_ARRAY(char, _file_name, mtInternal); 631 _file_name = NULL; 632 } 633} 634 635gcLogFileStream::gcLogFileStream(const char* file_name) { 636 _cur_file_num = 0; 637 _bytes_written = 0L; 638 _file_name = make_log_name(file_name, NULL); 639 640 // gc log file rotation 641 if (UseGCLogFileRotation && NumberOfGCLogFiles > 1) { 642 char tempbuf[FILENAMEBUFLEN]; 643 jio_snprintf(tempbuf, sizeof(tempbuf), "%s.%d" CURRENTAPPX, _file_name, _cur_file_num); 644 _file = fopen(tempbuf, "w"); 645 } else { 646 _file = fopen(_file_name, "w"); 647 } 648 if (_file != NULL) { 649 _need_close = true; 650 dump_loggc_header(); 651 } else { 652 warning("Cannot open file %s due to %s\n", _file_name, strerror(errno)); 653 _need_close = false; 654 } 655} 656 657void gcLogFileStream::write(const char* s, size_t len) { 658 if (_file != NULL) { 659 size_t count = fwrite(s, 1, len, _file); 660 _bytes_written += count; 661 } 662 update_position(s, len); 663} 664 665// rotate_log must be called from VMThread at safepoint. In case need change parameters 666// for gc log rotation from thread other than VMThread, a sub type of VM_Operation 667// should be created and be submitted to VMThread's operation queue. DO NOT call this 668// function directly. Currently, it is safe to rotate log at safepoint through VMThread. 669// That is, no mutator threads and concurrent GC threads run parallel with VMThread to 670// write to gc log file at safepoint. If in future, changes made for mutator threads or 671// concurrent GC threads to run parallel with VMThread at safepoint, write and rotate_log 672// must be synchronized. 673void gcLogFileStream::rotate_log(bool force, outputStream* out) { 674 char time_msg[FILENAMEBUFLEN]; 675 char time_str[EXTRACHARLEN]; 676 char current_file_name[FILENAMEBUFLEN]; 677 char renamed_file_name[FILENAMEBUFLEN]; 678 679 if (!should_rotate(force)) { 680 return; 681 } 682 683#ifdef ASSERT 684 Thread *thread = Thread::current(); 685 assert(thread == NULL || 686 (thread->is_VM_thread() && SafepointSynchronize::is_at_safepoint()), 687 "Must be VMThread at safepoint"); 688#endif 689 if (NumberOfGCLogFiles == 1) { 690 // rotate in same file 691 rewind(); 692 _bytes_written = 0L; 693 jio_snprintf(time_msg, sizeof(time_msg), "File %s rotated at %s\n", 694 _file_name, os::local_time_string((char *)time_str, sizeof(time_str))); 695 write(time_msg, strlen(time_msg)); 696 697 if (out != NULL) { 698 out->print("%s", time_msg); 699 } 700 701 dump_loggc_header(); 702 return; 703 } 704 705#if defined(_WINDOWS) 706#ifndef F_OK 707#define F_OK 0 708#endif 709#endif // _WINDOWS 710 711 // rotate file in names extended_filename.0, extended_filename.1, ..., 712 // extended_filename.<NumberOfGCLogFiles - 1>. Current rotation file name will 713 // have a form of extended_filename.<i>.current where i is the current rotation 714 // file number. After it reaches max file size, the file will be saved and renamed 715 // with .current removed from its tail. 716 size_t filename_len = strlen(_file_name); 717 if (_file != NULL) { 718 jio_snprintf(renamed_file_name, filename_len + EXTRACHARLEN, "%s.%d", 719 _file_name, _cur_file_num); 720 jio_snprintf(current_file_name, filename_len + EXTRACHARLEN, "%s.%d" CURRENTAPPX, 721 _file_name, _cur_file_num); 722 723 const char* msg = force ? "GC log rotation request has been received." 724 : "GC log file has reached the maximum size."; 725 jio_snprintf(time_msg, sizeof(time_msg), "%s %s Saved as %s\n", 726 os::local_time_string((char *)time_str, sizeof(time_str)), 727 msg, renamed_file_name); 728 write(time_msg, strlen(time_msg)); 729 730 if (out != NULL) { 731 out->print("%s", time_msg); 732 } 733 734 fclose(_file); 735 _file = NULL; 736 737 bool can_rename = true; 738 if (access(current_file_name, F_OK) != 0) { 739 // current file does not exist? 740 warning("No source file exists, cannot rename\n"); 741 can_rename = false; 742 } 743 if (can_rename) { 744 if (access(renamed_file_name, F_OK) == 0) { 745 if (remove(renamed_file_name) != 0) { 746 warning("Could not delete existing file %s\n", renamed_file_name); 747 can_rename = false; 748 } 749 } else { 750 // file does not exist, ok to rename 751 } 752 } 753 if (can_rename && rename(current_file_name, renamed_file_name) != 0) { 754 warning("Could not rename %s to %s\n", _file_name, renamed_file_name); 755 } 756 } 757 758 _cur_file_num++; 759 if (_cur_file_num > NumberOfGCLogFiles - 1) _cur_file_num = 0; 760 jio_snprintf(current_file_name, filename_len + EXTRACHARLEN, "%s.%d" CURRENTAPPX, 761 _file_name, _cur_file_num); 762 _file = fopen(current_file_name, "w"); 763 764 if (_file != NULL) { 765 _bytes_written = 0L; 766 _need_close = true; 767 // reuse current_file_name for time_msg 768 jio_snprintf(current_file_name, filename_len + EXTRACHARLEN, 769 "%s.%d", _file_name, _cur_file_num); 770 jio_snprintf(time_msg, sizeof(time_msg), "%s GC log file created %s\n", 771 os::local_time_string((char *)time_str, sizeof(time_str)), 772 current_file_name); 773 write(time_msg, strlen(time_msg)); 774 775 if (out != NULL) { 776 out->print("%s", time_msg); 777 } 778 779 dump_loggc_header(); 780 // remove the existing file 781 if (access(current_file_name, F_OK) == 0) { 782 if (remove(current_file_name) != 0) { 783 warning("Could not delete existing file %s\n", current_file_name); 784 } 785 } 786 } else { 787 warning("failed to open rotation log file %s due to %s\n" 788 "Turned off GC log file rotation\n", 789 _file_name, strerror(errno)); 790 _need_close = false; 791 FLAG_SET_DEFAULT(UseGCLogFileRotation, false); 792 } 793} 794 795defaultStream* defaultStream::instance = NULL; 796int defaultStream::_output_fd = 1; 797int defaultStream::_error_fd = 2; 798FILE* defaultStream::_output_stream = stdout; 799FILE* defaultStream::_error_stream = stderr; 800 801#define LOG_MAJOR_VERSION 160 802#define LOG_MINOR_VERSION 1 803 804void defaultStream::init() { 805 _inited = true; 806 if (LogVMOutput || LogCompilation) { 807 init_log(); 808 } 809} 810 811bool defaultStream::has_log_file() { 812 // lazily create log file (at startup, LogVMOutput is false even 813 // if +LogVMOutput is used, because the flags haven't been parsed yet) 814 // For safer printing during fatal error handling, do not init logfile 815 // if a VM error has been reported. 816 if (!_inited && !is_error_reported()) init(); 817 return _log_file != NULL; 818} 819 820void defaultStream::init_log() { 821 // %%% Need a MutexLocker? 822 const char* log_name = LogFile != NULL ? LogFile : "hotspot_%p.log"; 823 const char* try_name = make_log_name(log_name, NULL); 824 fileStream* file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name); 825 if (!file->is_open()) { 826 // Try again to open the file. 827 char warnbuf[O_BUFLEN*2]; 828 jio_snprintf(warnbuf, sizeof(warnbuf), 829 "Warning: Cannot open log file: %s\n", try_name); 830 // Note: This feature is for maintainer use only. No need for L10N. 831 jio_print(warnbuf); 832 FREE_C_HEAP_ARRAY(char, try_name, mtInternal); 833 try_name = make_log_name(log_name, os::get_temp_directory()); 834 jio_snprintf(warnbuf, sizeof(warnbuf), 835 "Warning: Forcing option -XX:LogFile=%s\n", try_name); 836 jio_print(warnbuf); 837 delete file; 838 file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name); 839 } 840 FREE_C_HEAP_ARRAY(char, try_name, mtInternal); 841 842 if (file->is_open()) { 843 _log_file = file; 844 xmlStream* xs = new(ResourceObj::C_HEAP, mtInternal) xmlStream(file); 845 _outer_xmlStream = xs; 846 if (this == tty) xtty = xs; 847 // Write XML header. 848 xs->print_cr("<?xml version='1.0' encoding='UTF-8'?>"); 849 // (For now, don't bother to issue a DTD for this private format.) 850 jlong time_ms = os::javaTimeMillis() - tty->time_stamp().milliseconds(); 851 // %%% Should be: jlong time_ms = os::start_time_milliseconds(), if 852 // we ever get round to introduce that method on the os class 853 xs->head("hotspot_log version='%d %d'" 854 " process='%d' time_ms='"INT64_FORMAT"'", 855 LOG_MAJOR_VERSION, LOG_MINOR_VERSION, 856 os::current_process_id(), (int64_t)time_ms); 857 // Write VM version header immediately. 858 xs->head("vm_version"); 859 xs->head("name"); xs->text("%s", VM_Version::vm_name()); xs->cr(); 860 xs->tail("name"); 861 xs->head("release"); xs->text("%s", VM_Version::vm_release()); xs->cr(); 862 xs->tail("release"); 863 xs->head("info"); xs->text("%s", VM_Version::internal_vm_info_string()); xs->cr(); 864 xs->tail("info"); 865 xs->tail("vm_version"); 866 // Record information about the command-line invocation. 867 xs->head("vm_arguments"); // Cf. Arguments::print_on() 868 if (Arguments::num_jvm_flags() > 0) { 869 xs->head("flags"); 870 Arguments::print_jvm_flags_on(xs->text()); 871 xs->tail("flags"); 872 } 873 if (Arguments::num_jvm_args() > 0) { 874 xs->head("args"); 875 Arguments::print_jvm_args_on(xs->text()); 876 xs->tail("args"); 877 } 878 if (Arguments::java_command() != NULL) { 879 xs->head("command"); xs->text()->print_cr("%s", Arguments::java_command()); 880 xs->tail("command"); 881 } 882 if (Arguments::sun_java_launcher() != NULL) { 883 xs->head("launcher"); xs->text()->print_cr("%s", Arguments::sun_java_launcher()); 884 xs->tail("launcher"); 885 } 886 if (Arguments::system_properties() != NULL) { 887 xs->head("properties"); 888 // Print it as a java-style property list. 889 // System properties don't generally contain newlines, so don't bother with unparsing. 890 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { 891 xs->text()->print_cr("%s=%s", p->key(), p->value()); 892 } 893 xs->tail("properties"); 894 } 895 xs->tail("vm_arguments"); 896 // tty output per se is grouped under the <tty>...</tty> element. 897 xs->head("tty"); 898 // All further non-markup text gets copied to the tty: 899 xs->_text = this; // requires friend declaration! 900 } else { 901 delete(file); 902 // and leave xtty as NULL 903 LogVMOutput = false; 904 DisplayVMOutput = true; 905 LogCompilation = false; 906 } 907} 908 909// finish_log() is called during normal VM shutdown. finish_log_on_error() is 910// called by ostream_abort() after a fatal error. 911// 912void defaultStream::finish_log() { 913 xmlStream* xs = _outer_xmlStream; 914 xs->done("tty"); 915 916 // Other log forks are appended here, at the End of Time: 917 CompileLog::finish_log(xs->out()); // write compile logging, if any, now 918 919 xs->done("hotspot_log"); 920 xs->flush(); 921 922 fileStream* file = _log_file; 923 _log_file = NULL; 924 925 delete _outer_xmlStream; 926 _outer_xmlStream = NULL; 927 928 file->flush(); 929 delete file; 930} 931 932void defaultStream::finish_log_on_error(char *buf, int buflen) { 933 xmlStream* xs = _outer_xmlStream; 934 935 if (xs && xs->out()) { 936 937 xs->done_raw("tty"); 938 939 // Other log forks are appended here, at the End of Time: 940 CompileLog::finish_log_on_error(xs->out(), buf, buflen); // write compile logging, if any, now 941 942 xs->done_raw("hotspot_log"); 943 xs->flush(); 944 945 fileStream* file = _log_file; 946 _log_file = NULL; 947 _outer_xmlStream = NULL; 948 949 if (file) { 950 file->flush(); 951 952 // Can't delete or close the file because delete and fclose aren't 953 // async-safe. We are about to die, so leave it to the kernel. 954 // delete file; 955 } 956 } 957} 958 959intx defaultStream::hold(intx writer_id) { 960 bool has_log = has_log_file(); // check before locking 961 if (// impossible, but who knows? 962 writer_id == NO_WRITER || 963 964 // bootstrap problem 965 tty_lock == NULL || 966 967 // can't grab a lock or call Thread::current() if TLS isn't initialized 968 ThreadLocalStorage::thread() == NULL || 969 970 // developer hook 971 !SerializeVMOutput || 972 973 // VM already unhealthy 974 is_error_reported() || 975 976 // safepoint == global lock (for VM only) 977 (SafepointSynchronize::is_synchronizing() && 978 Thread::current()->is_VM_thread()) 979 ) { 980 // do not attempt to lock unless we know the thread and the VM is healthy 981 return NO_WRITER; 982 } 983 if (_writer == writer_id) { 984 // already held, no need to re-grab the lock 985 return NO_WRITER; 986 } 987 tty_lock->lock_without_safepoint_check(); 988 // got the lock 989 if (writer_id != _last_writer) { 990 if (has_log) { 991 _log_file->bol(); 992 // output a hint where this output is coming from: 993 _log_file->print_cr("<writer thread='" UINTX_FORMAT "'/>", writer_id); 994 } 995 _last_writer = writer_id; 996 } 997 _writer = writer_id; 998 return writer_id; 999} 1000 1001void defaultStream::release(intx holder) { 1002 if (holder == NO_WRITER) { 1003 // nothing to release: either a recursive lock, or we scribbled (too bad) 1004 return; 1005 } 1006 if (_writer != holder) { 1007 return; // already unlocked, perhaps via break_tty_lock_for_safepoint 1008 } 1009 _writer = NO_WRITER; 1010 tty_lock->unlock(); 1011} 1012 1013 1014// Yuck: jio_print does not accept char*/len. 1015static void call_jio_print(const char* s, size_t len) { 1016 char buffer[O_BUFLEN+100]; 1017 if (len > sizeof(buffer)-1) { 1018 warning("increase O_BUFLEN in ostream.cpp -- output truncated"); 1019 len = sizeof(buffer)-1; 1020 } 1021 strncpy(buffer, s, len); 1022 buffer[len] = '\0'; 1023 jio_print(buffer); 1024} 1025 1026 1027void defaultStream::write(const char* s, size_t len) { 1028 intx thread_id = os::current_thread_id(); 1029 intx holder = hold(thread_id); 1030 1031 if (DisplayVMOutput && 1032 (_outer_xmlStream == NULL || !_outer_xmlStream->inside_attrs())) { 1033 // print to output stream. It can be redirected by a vfprintf hook 1034 if (s[len] == '\0') { 1035 jio_print(s); 1036 } else { 1037 call_jio_print(s, len); 1038 } 1039 } 1040 1041 // print to log file 1042 if (has_log_file()) { 1043 int nl0 = _newlines; 1044 xmlTextStream::write(s, len); 1045 // flush the log file too, if there were any newlines 1046 if (nl0 != _newlines){ 1047 flush(); 1048 } 1049 } else { 1050 update_position(s, len); 1051 } 1052 1053 release(holder); 1054} 1055 1056intx ttyLocker::hold_tty() { 1057 if (defaultStream::instance == NULL) return defaultStream::NO_WRITER; 1058 intx thread_id = os::current_thread_id(); 1059 return defaultStream::instance->hold(thread_id); 1060} 1061 1062void ttyLocker::release_tty(intx holder) { 1063 if (holder == defaultStream::NO_WRITER) return; 1064 defaultStream::instance->release(holder); 1065} 1066 1067bool ttyLocker::release_tty_if_locked() { 1068 intx thread_id = os::current_thread_id(); 1069 if (defaultStream::instance->writer() == thread_id) { 1070 // release the lock and return true so callers know if was 1071 // previously held. 1072 release_tty(thread_id); 1073 return true; 1074 } 1075 return false; 1076} 1077 1078void ttyLocker::break_tty_lock_for_safepoint(intx holder) { 1079 if (defaultStream::instance != NULL && 1080 defaultStream::instance->writer() == holder) { 1081 if (xtty != NULL) { 1082 xtty->print_cr("<!-- safepoint while printing -->"); 1083 } 1084 defaultStream::instance->release(holder); 1085 } 1086 // (else there was no lock to break) 1087} 1088 1089void ostream_init() { 1090 if (defaultStream::instance == NULL) { 1091 defaultStream::instance = new(ResourceObj::C_HEAP, mtInternal) defaultStream(); 1092 tty = defaultStream::instance; 1093 1094 // We want to ensure that time stamps in GC logs consider time 0 1095 // the time when the JVM is initialized, not the first time we ask 1096 // for a time stamp. So, here, we explicitly update the time stamp 1097 // of tty. 1098 tty->time_stamp().update_to(1); 1099 } 1100} 1101 1102void ostream_init_log() { 1103 // For -Xloggc:<file> option - called in runtime/thread.cpp 1104 // Note : this must be called AFTER ostream_init() 1105 1106 gclog_or_tty = tty; // default to tty 1107 if (Arguments::gc_log_filename() != NULL) { 1108 fileStream * gclog = new(ResourceObj::C_HEAP, mtInternal) 1109 gcLogFileStream(Arguments::gc_log_filename()); 1110 if (gclog->is_open()) { 1111 // now we update the time stamp of the GC log to be synced up 1112 // with tty. 1113 gclog->time_stamp().update_to(tty->time_stamp().ticks()); 1114 } 1115 gclog_or_tty = gclog; 1116 } 1117 1118#if INCLUDE_CDS 1119 // For -XX:DumpLoadedClassList=<file> option 1120 if (DumpLoadedClassList != NULL) { 1121 const char* list_name = make_log_name(DumpLoadedClassList, NULL); 1122 classlist_file = new(ResourceObj::C_HEAP, mtInternal) 1123 fileStream(list_name); 1124 FREE_C_HEAP_ARRAY(char, list_name, mtInternal); 1125 } 1126#endif 1127 1128 // If we haven't lazily initialized the logfile yet, do it now, 1129 // to avoid the possibility of lazy initialization during a VM 1130 // crash, which can affect the stability of the fatal error handler. 1131 defaultStream::instance->has_log_file(); 1132} 1133 1134// ostream_exit() is called during normal VM exit to finish log files, flush 1135// output and free resource. 1136void ostream_exit() { 1137 static bool ostream_exit_called = false; 1138 if (ostream_exit_called) return; 1139 ostream_exit_called = true; 1140#if INCLUDE_CDS 1141 if (classlist_file != NULL) { 1142 delete classlist_file; 1143 } 1144#endif 1145 if (gclog_or_tty != tty) { 1146 delete gclog_or_tty; 1147 } 1148 { 1149 // we temporaly disable PrintMallocFree here 1150 // as otherwise it'll lead to using of almost deleted 1151 // tty or defaultStream::instance in logging facility 1152 // of HeapFree(), see 6391258 1153 DEBUG_ONLY(FlagSetting fs(PrintMallocFree, false);) 1154 if (tty != defaultStream::instance) { 1155 delete tty; 1156 } 1157 if (defaultStream::instance != NULL) { 1158 delete defaultStream::instance; 1159 } 1160 } 1161 tty = NULL; 1162 xtty = NULL; 1163 gclog_or_tty = NULL; 1164 defaultStream::instance = NULL; 1165} 1166 1167// ostream_abort() is called by os::abort() when VM is about to die. 1168void ostream_abort() { 1169 // Here we can't delete gclog_or_tty and tty, just flush their output 1170 if (gclog_or_tty) gclog_or_tty->flush(); 1171 if (tty) tty->flush(); 1172 1173 if (defaultStream::instance != NULL) { 1174 static char buf[4096]; 1175 defaultStream::instance->finish_log_on_error(buf, sizeof(buf)); 1176 } 1177} 1178 1179staticBufferStream::staticBufferStream(char* buffer, size_t buflen, 1180 outputStream *outer_stream) { 1181 _buffer = buffer; 1182 _buflen = buflen; 1183 _outer_stream = outer_stream; 1184 // compile task prints time stamp relative to VM start 1185 _stamp.update_to(1); 1186} 1187 1188void staticBufferStream::write(const char* c, size_t len) { 1189 _outer_stream->print_raw(c, (int)len); 1190} 1191 1192void staticBufferStream::flush() { 1193 _outer_stream->flush(); 1194} 1195 1196void staticBufferStream::print(const char* format, ...) { 1197 va_list ap; 1198 va_start(ap, format); 1199 size_t len; 1200 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, false, len); 1201 write(str, len); 1202 va_end(ap); 1203} 1204 1205void staticBufferStream::print_cr(const char* format, ...) { 1206 va_list ap; 1207 va_start(ap, format); 1208 size_t len; 1209 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, true, len); 1210 write(str, len); 1211 va_end(ap); 1212} 1213 1214void staticBufferStream::vprint(const char *format, va_list argptr) { 1215 size_t len; 1216 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, false, len); 1217 write(str, len); 1218} 1219 1220void staticBufferStream::vprint_cr(const char* format, va_list argptr) { 1221 size_t len; 1222 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, true, len); 1223 write(str, len); 1224} 1225 1226bufferedStream::bufferedStream(size_t initial_size, size_t bufmax) : outputStream() { 1227 buffer_length = initial_size; 1228 buffer = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal); 1229 buffer_pos = 0; 1230 buffer_fixed = false; 1231 buffer_max = bufmax; 1232} 1233 1234bufferedStream::bufferedStream(char* fixed_buffer, size_t fixed_buffer_size, size_t bufmax) : outputStream() { 1235 buffer_length = fixed_buffer_size; 1236 buffer = fixed_buffer; 1237 buffer_pos = 0; 1238 buffer_fixed = true; 1239 buffer_max = bufmax; 1240} 1241 1242void bufferedStream::write(const char* s, size_t len) { 1243 1244 if(buffer_pos + len > buffer_max) { 1245 flush(); 1246 } 1247 1248 size_t end = buffer_pos + len; 1249 if (end >= buffer_length) { 1250 if (buffer_fixed) { 1251 // if buffer cannot resize, silently truncate 1252 len = buffer_length - buffer_pos - 1; 1253 } else { 1254 // For small overruns, double the buffer. For larger ones, 1255 // increase to the requested size. 1256 if (end < buffer_length * 2) { 1257 end = buffer_length * 2; 1258 } 1259 buffer = REALLOC_C_HEAP_ARRAY(char, buffer, end, mtInternal); 1260 buffer_length = end; 1261 } 1262 } 1263 memcpy(buffer + buffer_pos, s, len); 1264 buffer_pos += len; 1265 update_position(s, len); 1266} 1267 1268char* bufferedStream::as_string() { 1269 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1); 1270 strncpy(copy, buffer, buffer_pos); 1271 copy[buffer_pos] = 0; // terminating null 1272 return copy; 1273} 1274 1275bufferedStream::~bufferedStream() { 1276 if (!buffer_fixed) { 1277 FREE_C_HEAP_ARRAY(char, buffer, mtInternal); 1278 } 1279} 1280 1281#ifndef PRODUCT 1282 1283#if defined(SOLARIS) || defined(LINUX) || defined(AIX) || defined(_ALLBSD_SOURCE) 1284#include <sys/types.h> 1285#include <sys/socket.h> 1286#include <netinet/in.h> 1287#include <arpa/inet.h> 1288#endif 1289 1290// Network access 1291networkStream::networkStream() : bufferedStream(1024*10, 1024*10) { 1292 1293 _socket = -1; 1294 1295 int result = os::socket(AF_INET, SOCK_STREAM, 0); 1296 if (result <= 0) { 1297 assert(false, "Socket could not be created!"); 1298 } else { 1299 _socket = result; 1300 } 1301} 1302 1303int networkStream::read(char *buf, size_t len) { 1304 return os::recv(_socket, buf, (int)len, 0); 1305} 1306 1307void networkStream::flush() { 1308 if (size() != 0) { 1309 int result = os::raw_send(_socket, (char *)base(), size(), 0); 1310 assert(result != -1, "connection error"); 1311 assert(result == (int)size(), "didn't send enough data"); 1312 } 1313 reset(); 1314} 1315 1316networkStream::~networkStream() { 1317 close(); 1318} 1319 1320void networkStream::close() { 1321 if (_socket != -1) { 1322 flush(); 1323 os::socket_close(_socket); 1324 _socket = -1; 1325 } 1326} 1327 1328bool networkStream::connect(const char *ip, short port) { 1329 1330 struct sockaddr_in server; 1331 server.sin_family = AF_INET; 1332 server.sin_port = htons(port); 1333 1334 server.sin_addr.s_addr = inet_addr(ip); 1335 if (server.sin_addr.s_addr == (uint32_t)-1) { 1336 struct hostent* host = os::get_host_by_name((char*)ip); 1337 if (host != NULL) { 1338 memcpy(&server.sin_addr, host->h_addr_list[0], host->h_length); 1339 } else { 1340 return false; 1341 } 1342 } 1343 1344 1345 int result = os::connect(_socket, (struct sockaddr*)&server, sizeof(struct sockaddr_in)); 1346 return (result >= 0); 1347} 1348 1349#endif 1350