1 /* 2 * Copyright (c) 1997, 2015, 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/shared/gcId.hpp" 28 #include "gc/shared/gcId.hpp" 29 #include "oops/oop.inline.hpp" 30 #include "runtime/arguments.hpp" 31 #include "runtime/os.hpp" 32 #include "runtime/vm_version.hpp" 33 #include "utilities/defaultStream.hpp" 34 #include "utilities/macros.hpp" 35 #include "utilities/ostream.hpp" 36 #include "utilities/top.hpp" 37 #include "utilities/xmlstream.hpp" 38 39 extern "C" void jio_print(const char* s); // Declarationtion of jvm method 40 41 outputStream::outputStream(int width) { 42 _width = width; 43 _position = 0; 44 _newlines = 0; 45 _precount = 0; 46 _indentation = 0; 47 } 48 49 outputStream::outputStream(int width, bool has_time_stamps) { 50 _width = width; 51 _position = 0; 52 _newlines = 0; 53 _precount = 0; 54 _indentation = 0; 55 if (has_time_stamps) _stamp.update(); 56 } 57 58 void outputStream::update_position(const char* s, size_t len) { 59 for (size_t i = 0; i < len; i++) { 60 char ch = s[i]; 61 if (ch == '\n') { 62 _newlines += 1; 63 _precount += _position + 1; 64 _position = 0; 65 } else if (ch == '\t') { 66 int tw = 8 - (_position & 7); 67 _position += tw; 68 _precount -= tw-1; // invariant: _precount + _position == total count 69 } else { 70 _position += 1; 71 } 72 } 73 } 74 75 // Execute a vsprintf, using the given buffer if necessary. 76 // Return a pointer to the formatted string. 77 const char* outputStream::do_vsnprintf(char* buffer, size_t buflen, 78 const char* format, va_list ap, 79 bool add_cr, 80 size_t& result_len) { 81 assert(buflen >= 2, "buffer too small"); 82 83 const char* result; 84 if (add_cr) buflen--; 85 if (!strchr(format, '%')) { 86 // constant format string 87 result = format; 88 result_len = strlen(result); 89 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate 90 } else if (format[0] == '%' && format[1] == 's' && format[2] == '\0') { 91 // trivial copy-through format string 92 result = va_arg(ap, const char*); 93 result_len = strlen(result); 94 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate 95 } else { 96 // Handle truncation: 97 // posix: upon truncation, vsnprintf returns number of bytes which 98 // would have been written (excluding terminating zero) had the buffer 99 // been large enough 100 // windows: upon truncation, vsnprintf returns -1 101 const int written = vsnprintf(buffer, buflen, format, ap); 102 result = buffer; 103 if (written < (int) buflen && written >= 0) { 104 result_len = written; 105 } else { 106 DEBUG_ONLY(warning("increase O_BUFLEN in ostream.hpp -- output truncated");) 107 result_len = buflen - 1; 108 buffer[result_len] = 0; 109 } 110 } 111 if (add_cr) { 112 if (result != buffer) { 113 memcpy(buffer, result, result_len); 114 result = buffer; 115 } 116 buffer[result_len++] = '\n'; 117 buffer[result_len] = 0; 118 } 119 return result; 120 } 121 122 void outputStream::print(const char* format, ...) { 123 char buffer[O_BUFLEN]; 124 va_list ap; 125 va_start(ap, format); 126 size_t len; 127 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, false, len); 128 write(str, len); 129 va_end(ap); 130 } 131 132 void outputStream::print_cr(const char* format, ...) { 133 char buffer[O_BUFLEN]; 134 va_list ap; 135 va_start(ap, format); 136 size_t len; 137 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, true, len); 138 write(str, len); 139 va_end(ap); 140 } 141 142 void outputStream::vprint(const char *format, va_list argptr) { 143 char buffer[O_BUFLEN]; 144 size_t len; 145 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, false, len); 146 write(str, len); 147 } 148 149 void outputStream::vprint_cr(const char* format, va_list argptr) { 150 char buffer[O_BUFLEN]; 151 size_t len; 152 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, true, len); 153 write(str, len); 154 } 155 156 void outputStream::fill_to(int col) { 157 int need_fill = col - position(); 158 sp(need_fill); 159 } 160 161 void outputStream::move_to(int col, int slop, int min_space) { 162 if (position() >= col + slop) 163 cr(); 164 int need_fill = col - position(); 165 if (need_fill < min_space) 166 need_fill = min_space; 167 sp(need_fill); 168 } 169 170 void outputStream::put(char ch) { 171 assert(ch != 0, "please fix call site"); 172 char buf[] = { ch, '\0' }; 173 write(buf, 1); 174 } 175 176 #define SP_USE_TABS false 177 178 void outputStream::sp(int count) { 179 if (count < 0) return; 180 if (SP_USE_TABS && count >= 8) { 181 int target = position() + count; 182 while (count >= 8) { 183 this->write("\t", 1); 184 count -= 8; 185 } 186 count = target - position(); 187 } 188 while (count > 0) { 189 int nw = (count > 8) ? 8 : count; 190 this->write(" ", nw); 191 count -= nw; 192 } 193 } 194 195 void outputStream::cr() { 196 this->write("\n", 1); 197 } 198 199 void outputStream::stamp() { 200 if (! _stamp.is_updated()) { 201 _stamp.update(); // start at 0 on first call to stamp() 202 } 203 204 // outputStream::stamp() may get called by ostream_abort(), use snprintf 205 // to avoid allocating large stack buffer in print(). 206 char buf[40]; 207 jio_snprintf(buf, sizeof(buf), "%.3f", _stamp.seconds()); 208 print_raw(buf); 209 } 210 211 void outputStream::stamp(bool guard, 212 const char* prefix, 213 const char* suffix) { 214 if (!guard) { 215 return; 216 } 217 print_raw(prefix); 218 stamp(); 219 print_raw(suffix); 220 } 221 222 void outputStream::date_stamp(bool guard, 223 const char* prefix, 224 const char* suffix) { 225 if (!guard) { 226 return; 227 } 228 print_raw(prefix); 229 static const char error_time[] = "yyyy-mm-ddThh:mm:ss.mmm+zzzz"; 230 static const int buffer_length = 32; 231 char buffer[buffer_length]; 232 const char* iso8601_result = os::iso8601_time(buffer, buffer_length); 233 if (iso8601_result != NULL) { 234 print_raw(buffer); 235 } else { 236 print_raw(error_time); 237 } 238 print_raw(suffix); 239 return; 240 } 241 242 void outputStream::gclog_stamp() { 243 date_stamp(PrintGCDateStamps); 244 stamp(PrintGCTimeStamps); 245 if (PrintGCID) { 246 print("#%u: ", GCId::current()); 247 } 248 } 249 250 outputStream& outputStream::indent() { 251 while (_position < _indentation) sp(); 252 return *this; 253 } 254 255 void outputStream::print_jlong(jlong value) { 256 print(JLONG_FORMAT, value); 257 } 258 259 void outputStream::print_julong(julong value) { 260 print(JULONG_FORMAT, value); 261 } 262 263 /** 264 * This prints out hex data in a 'windbg' or 'xxd' form, where each line is: 265 * <hex-address>: 8 * <hex-halfword> <ascii translation (optional)> 266 * example: 267 * 0000000: 7f44 4f46 0102 0102 0000 0000 0000 0000 .DOF............ 268 * 0000010: 0000 0000 0000 0040 0000 0020 0000 0005 .......@... .... 269 * 0000020: 0000 0000 0000 0040 0000 0000 0000 015d .......@.......] 270 * ... 271 * 272 * indent is applied to each line. Ends with a CR. 273 */ 274 void outputStream::print_data(void* data, size_t len, bool with_ascii) { 275 size_t limit = (len + 16) / 16 * 16; 276 for (size_t i = 0; i < limit; ++i) { 277 if (i % 16 == 0) { 278 indent().print(INTPTR_FORMAT_W(07) ":", i); 279 } 280 if (i % 2 == 0) { 281 print(" "); 282 } 283 if (i < len) { 284 print("%02x", ((unsigned char*)data)[i]); 285 } else { 286 print(" "); 287 } 288 if ((i + 1) % 16 == 0) { 289 if (with_ascii) { 290 print(" "); 291 for (size_t j = 0; j < 16; ++j) { 292 size_t idx = i + j - 15; 293 if (idx < len) { 294 char c = ((char*)data)[idx]; 295 print("%c", c >= 32 && c <= 126 ? c : '.'); 296 } 297 } 298 } 299 cr(); 300 } 301 } 302 } 303 304 stringStream::stringStream(size_t initial_size) : outputStream() { 305 buffer_length = initial_size; 306 buffer = NEW_RESOURCE_ARRAY(char, buffer_length); 307 buffer_pos = 0; 308 buffer_fixed = false; 309 DEBUG_ONLY(rm = Thread::current()->current_resource_mark();) 310 } 311 312 // useful for output to fixed chunks of memory, such as performance counters 313 stringStream::stringStream(char* fixed_buffer, size_t fixed_buffer_size) : outputStream() { 314 buffer_length = fixed_buffer_size; 315 buffer = fixed_buffer; 316 buffer_pos = 0; 317 buffer_fixed = true; 318 } 319 320 void stringStream::write(const char* s, size_t len) { 321 size_t write_len = len; // number of non-null bytes to write 322 size_t end = buffer_pos + len + 1; // position after write and final '\0' 323 if (end > buffer_length) { 324 if (buffer_fixed) { 325 // if buffer cannot resize, silently truncate 326 end = buffer_length; 327 write_len = end - buffer_pos - 1; // leave room for the final '\0' 328 } else { 329 // For small overruns, double the buffer. For larger ones, 330 // increase to the requested size. 331 if (end < buffer_length * 2) { 332 end = buffer_length * 2; 333 } 334 char* oldbuf = buffer; 335 assert(rm == NULL || Thread::current()->current_resource_mark() == rm, 336 "stringStream is re-allocated with a different ResourceMark"); 337 buffer = NEW_RESOURCE_ARRAY(char, end); 338 if (buffer_pos > 0) { 339 memcpy(buffer, oldbuf, buffer_pos); 340 } 341 buffer_length = end; 342 } 343 } 344 // invariant: buffer is always null-terminated 345 guarantee(buffer_pos + write_len + 1 <= buffer_length, "stringStream oob"); 346 if (write_len > 0) { 347 buffer[buffer_pos + write_len] = 0; 348 memcpy(buffer + buffer_pos, s, write_len); 349 buffer_pos += write_len; 350 } 351 352 // Note that the following does not depend on write_len. 353 // This means that position and count get updated 354 // even when overflow occurs. 355 update_position(s, len); 356 } 357 358 char* stringStream::as_string() { 359 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos + 1); 360 strncpy(copy, buffer, buffer_pos); 361 copy[buffer_pos] = 0; // terminating null 362 return copy; 363 } 364 365 stringStream::~stringStream() {} 366 367 xmlStream* xtty; 368 outputStream* tty; 369 outputStream* gclog_or_tty; 370 CDS_ONLY(fileStream* classlist_file;) // Only dump the classes that can be stored into the CDS archive 371 extern Mutex* tty_lock; 372 373 #define EXTRACHARLEN 32 374 #define CURRENTAPPX ".current" 375 // convert YYYY-MM-DD HH:MM:SS to YYYY-MM-DD_HH-MM-SS 376 char* get_datetime_string(char *buf, size_t len) { 377 os::local_time_string(buf, len); 378 int i = (int)strlen(buf); 379 while (i-- >= 0) { 380 if (buf[i] == ' ') buf[i] = '_'; 381 else if (buf[i] == ':') buf[i] = '-'; 382 } 383 return buf; 384 } 385 386 static const char* make_log_name_internal(const char* log_name, const char* force_directory, 387 int pid, const char* tms) { 388 const char* basename = log_name; 389 char file_sep = os::file_separator()[0]; 390 const char* cp; 391 char pid_text[32]; 392 393 for (cp = log_name; *cp != '\0'; cp++) { 394 if (*cp == '/' || *cp == file_sep) { 395 basename = cp + 1; 396 } 397 } 398 const char* nametail = log_name; 399 // Compute buffer length 400 size_t buffer_length; 401 if (force_directory != NULL) { 402 buffer_length = strlen(force_directory) + strlen(os::file_separator()) + 403 strlen(basename) + 1; 404 } else { 405 buffer_length = strlen(log_name) + 1; 406 } 407 408 const char* pts = strstr(basename, "%p"); 409 int pid_pos = (pts == NULL) ? -1 : (pts - nametail); 410 411 if (pid_pos >= 0) { 412 jio_snprintf(pid_text, sizeof(pid_text), "pid%u", pid); 413 buffer_length += strlen(pid_text); 414 } 415 416 pts = strstr(basename, "%t"); 417 int tms_pos = (pts == NULL) ? -1 : (pts - nametail); 418 if (tms_pos >= 0) { 419 buffer_length += strlen(tms); 420 } 421 422 // File name is too long. 423 if (buffer_length > JVM_MAXPATHLEN) { 424 return NULL; 425 } 426 427 // Create big enough buffer. 428 char *buf = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal); 429 430 strcpy(buf, ""); 431 if (force_directory != NULL) { 432 strcat(buf, force_directory); 433 strcat(buf, os::file_separator()); 434 nametail = basename; // completely skip directory prefix 435 } 436 437 // who is first, %p or %t? 438 int first = -1, second = -1; 439 const char *p1st = NULL; 440 const char *p2nd = NULL; 441 442 if (pid_pos >= 0 && tms_pos >= 0) { 443 // contains both %p and %t 444 if (pid_pos < tms_pos) { 445 // case foo%pbar%tmonkey.log 446 first = pid_pos; 447 p1st = pid_text; 448 second = tms_pos; 449 p2nd = tms; 450 } else { 451 // case foo%tbar%pmonkey.log 452 first = tms_pos; 453 p1st = tms; 454 second = pid_pos; 455 p2nd = pid_text; 456 } 457 } else if (pid_pos >= 0) { 458 // contains %p only 459 first = pid_pos; 460 p1st = pid_text; 461 } else if (tms_pos >= 0) { 462 // contains %t only 463 first = tms_pos; 464 p1st = tms; 465 } 466 467 int buf_pos = (int)strlen(buf); 468 const char* tail = nametail; 469 470 if (first >= 0) { 471 tail = nametail + first + 2; 472 strncpy(&buf[buf_pos], nametail, first); 473 strcpy(&buf[buf_pos + first], p1st); 474 buf_pos = (int)strlen(buf); 475 if (second >= 0) { 476 strncpy(&buf[buf_pos], tail, second - first - 2); 477 strcpy(&buf[buf_pos + second - first - 2], p2nd); 478 tail = nametail + second + 2; 479 } 480 } 481 strcat(buf, tail); // append rest of name, or all of name 482 return buf; 483 } 484 485 // log_name comes from -XX:LogFile=log_name, -Xloggc:log_name or 486 // -XX:DumpLoadedClassList=<file_name> 487 // in log_name, %p => pid1234 and 488 // %t => YYYY-MM-DD_HH-MM-SS 489 static const char* make_log_name(const char* log_name, const char* force_directory) { 490 char timestr[32]; 491 get_datetime_string(timestr, sizeof(timestr)); 492 return make_log_name_internal(log_name, force_directory, os::current_process_id(), 493 timestr); 494 } 495 496 #ifndef PRODUCT 497 void test_loggc_filename() { 498 int pid; 499 char tms[32]; 500 char i_result[JVM_MAXPATHLEN]; 501 const char* o_result; 502 get_datetime_string(tms, sizeof(tms)); 503 pid = os::current_process_id(); 504 505 // test.log 506 jio_snprintf(i_result, JVM_MAXPATHLEN, "test.log", tms); 507 o_result = make_log_name_internal("test.log", NULL, pid, tms); 508 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"test.log\", NULL)"); 509 FREE_C_HEAP_ARRAY(char, o_result); 510 511 // test-%t-%p.log 512 jio_snprintf(i_result, JVM_MAXPATHLEN, "test-%s-pid%u.log", tms, pid); 513 o_result = make_log_name_internal("test-%t-%p.log", NULL, pid, tms); 514 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"test-%%t-%%p.log\", NULL)"); 515 FREE_C_HEAP_ARRAY(char, o_result); 516 517 // test-%t%p.log 518 jio_snprintf(i_result, JVM_MAXPATHLEN, "test-%spid%u.log", tms, pid); 519 o_result = make_log_name_internal("test-%t%p.log", NULL, pid, tms); 520 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"test-%%t%%p.log\", NULL)"); 521 FREE_C_HEAP_ARRAY(char, o_result); 522 523 // %p%t.log 524 jio_snprintf(i_result, JVM_MAXPATHLEN, "pid%u%s.log", pid, tms); 525 o_result = make_log_name_internal("%p%t.log", NULL, pid, tms); 526 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"%%p%%t.log\", NULL)"); 527 FREE_C_HEAP_ARRAY(char, o_result); 528 529 // %p-test.log 530 jio_snprintf(i_result, JVM_MAXPATHLEN, "pid%u-test.log", pid); 531 o_result = make_log_name_internal("%p-test.log", NULL, pid, tms); 532 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"%%p-test.log\", NULL)"); 533 FREE_C_HEAP_ARRAY(char, o_result); 534 535 // %t.log 536 jio_snprintf(i_result, JVM_MAXPATHLEN, "%s.log", tms); 537 o_result = make_log_name_internal("%t.log", NULL, pid, tms); 538 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"%%t.log\", NULL)"); 539 FREE_C_HEAP_ARRAY(char, o_result); 540 541 { 542 // longest filename 543 char longest_name[JVM_MAXPATHLEN]; 544 memset(longest_name, 'a', sizeof(longest_name)); 545 longest_name[JVM_MAXPATHLEN - 1] = '\0'; 546 o_result = make_log_name_internal((const char*)&longest_name, NULL, pid, tms); 547 assert(strcmp(longest_name, o_result) == 0, "longest name does not match. expected '%s' but got '%s'", longest_name, o_result); 548 FREE_C_HEAP_ARRAY(char, o_result); 549 } 550 551 { 552 // too long file name 553 char too_long_name[JVM_MAXPATHLEN + 100]; 554 int too_long_length = sizeof(too_long_name); 555 memset(too_long_name, 'a', too_long_length); 556 too_long_name[too_long_length - 1] = '\0'; 557 o_result = make_log_name_internal((const char*)&too_long_name, NULL, pid, tms); 558 assert(o_result == NULL, "Too long file name should return NULL, but got '%s'", o_result); 559 } 560 561 { 562 // too long with timestamp 563 char longest_name[JVM_MAXPATHLEN]; 564 memset(longest_name, 'a', JVM_MAXPATHLEN); 565 longest_name[JVM_MAXPATHLEN - 3] = '%'; 566 longest_name[JVM_MAXPATHLEN - 2] = 't'; 567 longest_name[JVM_MAXPATHLEN - 1] = '\0'; 568 o_result = make_log_name_internal((const char*)&longest_name, NULL, pid, tms); 569 assert(o_result == NULL, "Too long file name after timestamp expansion should return NULL, but got '%s'", o_result); 570 } 571 572 { 573 // too long with pid 574 char longest_name[JVM_MAXPATHLEN]; 575 memset(longest_name, 'a', JVM_MAXPATHLEN); 576 longest_name[JVM_MAXPATHLEN - 3] = '%'; 577 longest_name[JVM_MAXPATHLEN - 2] = 'p'; 578 longest_name[JVM_MAXPATHLEN - 1] = '\0'; 579 o_result = make_log_name_internal((const char*)&longest_name, NULL, pid, tms); 580 assert(o_result == NULL, "Too long file name after pid expansion should return NULL, but got '%s'", o_result); 581 } 582 } 583 #endif // PRODUCT 584 585 fileStream::fileStream(const char* file_name) { 586 _file = fopen(file_name, "w"); 587 if (_file != NULL) { 588 _need_close = true; 589 } else { 590 warning("Cannot open file %s due to %s\n", file_name, strerror(errno)); 591 _need_close = false; 592 } 593 } 594 595 fileStream::fileStream(const char* file_name, const char* opentype) { 596 _file = fopen(file_name, opentype); 597 if (_file != NULL) { 598 _need_close = true; 599 } else { 600 warning("Cannot open file %s due to %s\n", file_name, strerror(errno)); 601 _need_close = false; 602 } 603 } 604 605 void fileStream::write(const char* s, size_t len) { 606 if (_file != NULL) { 607 // Make an unused local variable to avoid warning from gcc 4.x compiler. 608 size_t count = fwrite(s, 1, len, _file); 609 } 610 update_position(s, len); 611 } 612 613 long fileStream::fileSize() { 614 long size = -1; 615 if (_file != NULL) { 616 long pos = ::ftell(_file); 617 if (::fseek(_file, 0, SEEK_END) == 0) { 618 size = ::ftell(_file); 619 } 620 ::fseek(_file, pos, SEEK_SET); 621 } 622 return size; 623 } 624 625 char* fileStream::readln(char *data, int count ) { 626 char * ret = ::fgets(data, count, _file); 627 //Get rid of annoying \n char 628 data[::strlen(data)-1] = '\0'; 629 return ret; 630 } 631 632 fileStream::~fileStream() { 633 if (_file != NULL) { 634 if (_need_close) fclose(_file); 635 _file = NULL; 636 } 637 } 638 639 void fileStream::flush() { 640 fflush(_file); 641 } 642 643 fdStream::fdStream(const char* file_name) { 644 _fd = open(file_name, O_WRONLY | O_CREAT | O_TRUNC, 0666); 645 _need_close = true; 646 } 647 648 fdStream::~fdStream() { 649 if (_fd != -1) { 650 if (_need_close) close(_fd); 651 _fd = -1; 652 } 653 } 654 655 void fdStream::write(const char* s, size_t len) { 656 if (_fd != -1) { 657 // Make an unused local variable to avoid warning from gcc 4.x compiler. 658 size_t count = ::write(_fd, s, (int)len); 659 } 660 update_position(s, len); 661 } 662 663 // dump vm version, os version, platform info, build id, 664 // memory usage and command line flags into header 665 void gcLogFileStream::dump_loggc_header() { 666 if (is_open()) { 667 print_cr("%s", Abstract_VM_Version::internal_vm_info_string()); 668 os::print_memory_info(this); 669 print("CommandLine flags: "); 670 CommandLineFlags::printSetFlags(this); 671 } 672 } 673 674 gcLogFileStream::~gcLogFileStream() { 675 if (_file != NULL) { 676 if (_need_close) fclose(_file); 677 _file = NULL; 678 } 679 if (_file_name != NULL) { 680 FREE_C_HEAP_ARRAY(char, _file_name); 681 _file_name = NULL; 682 } 683 } 684 685 gcLogFileStream::gcLogFileStream(const char* file_name) { 686 _cur_file_num = 0; 687 _bytes_written = 0L; 688 _file_name = make_log_name(file_name, NULL); 689 690 if (_file_name == NULL) { 691 warning("Cannot open file %s: file name is too long.\n", file_name); 692 _need_close = false; 693 UseGCLogFileRotation = false; 694 return; 695 } 696 697 // gc log file rotation 698 if (UseGCLogFileRotation && NumberOfGCLogFiles > 1) { 699 char tempbuf[JVM_MAXPATHLEN]; 700 jio_snprintf(tempbuf, sizeof(tempbuf), "%s.%d" CURRENTAPPX, _file_name, _cur_file_num); 701 _file = fopen(tempbuf, "w"); 702 } else { 703 _file = fopen(_file_name, "w"); 704 } 705 if (_file != NULL) { 706 _need_close = true; 707 dump_loggc_header(); 708 } else { 709 warning("Cannot open file %s due to %s\n", _file_name, strerror(errno)); 710 _need_close = false; 711 } 712 } 713 714 void gcLogFileStream::write(const char* s, size_t len) { 715 if (_file != NULL) { 716 size_t count = fwrite(s, 1, len, _file); 717 _bytes_written += count; 718 } 719 update_position(s, len); 720 } 721 722 // rotate_log must be called from VMThread at safepoint. In case need change parameters 723 // for gc log rotation from thread other than VMThread, a sub type of VM_Operation 724 // should be created and be submitted to VMThread's operation queue. DO NOT call this 725 // function directly. Currently, it is safe to rotate log at safepoint through VMThread. 726 // That is, no mutator threads and concurrent GC threads run parallel with VMThread to 727 // write to gc log file at safepoint. If in future, changes made for mutator threads or 728 // concurrent GC threads to run parallel with VMThread at safepoint, write and rotate_log 729 // must be synchronized. 730 void gcLogFileStream::rotate_log(bool force, outputStream* out) { 731 char time_msg[O_BUFLEN]; 732 char time_str[EXTRACHARLEN]; 733 char current_file_name[JVM_MAXPATHLEN]; 734 char renamed_file_name[JVM_MAXPATHLEN]; 735 736 if (!should_rotate(force)) { 737 return; 738 } 739 740 #ifdef ASSERT 741 Thread *thread = Thread::current(); 742 assert(thread == NULL || 743 (thread->is_VM_thread() && SafepointSynchronize::is_at_safepoint()), 744 "Must be VMThread at safepoint"); 745 #endif 746 if (NumberOfGCLogFiles == 1) { 747 // rotate in same file 748 rewind(); 749 _bytes_written = 0L; 750 jio_snprintf(time_msg, sizeof(time_msg), "File %s rotated at %s\n", 751 _file_name, os::local_time_string((char *)time_str, sizeof(time_str))); 752 write(time_msg, strlen(time_msg)); 753 754 if (out != NULL) { 755 out->print("%s", time_msg); 756 } 757 758 dump_loggc_header(); 759 return; 760 } 761 762 #if defined(_WINDOWS) 763 #ifndef F_OK 764 #define F_OK 0 765 #endif 766 #endif // _WINDOWS 767 768 // rotate file in names extended_filename.0, extended_filename.1, ..., 769 // extended_filename.<NumberOfGCLogFiles - 1>. Current rotation file name will 770 // have a form of extended_filename.<i>.current where i is the current rotation 771 // file number. After it reaches max file size, the file will be saved and renamed 772 // with .current removed from its tail. 773 if (_file != NULL) { 774 jio_snprintf(renamed_file_name, JVM_MAXPATHLEN, "%s.%d", 775 _file_name, _cur_file_num); 776 int result = jio_snprintf(current_file_name, JVM_MAXPATHLEN, 777 "%s.%d" CURRENTAPPX, _file_name, _cur_file_num); 778 if (result >= JVM_MAXPATHLEN) { 779 warning("Cannot create new log file name: %s: file name is too long.\n", current_file_name); 780 return; 781 } 782 783 const char* msg = force ? "GC log rotation request has been received." 784 : "GC log file has reached the maximum size."; 785 jio_snprintf(time_msg, sizeof(time_msg), "%s %s Saved as %s\n", 786 os::local_time_string((char *)time_str, sizeof(time_str)), 787 msg, renamed_file_name); 788 write(time_msg, strlen(time_msg)); 789 790 if (out != NULL) { 791 out->print("%s", time_msg); 792 } 793 794 fclose(_file); 795 _file = NULL; 796 797 bool can_rename = true; 798 if (access(current_file_name, F_OK) != 0) { 799 // current file does not exist? 800 warning("No source file exists, cannot rename\n"); 801 can_rename = false; 802 } 803 if (can_rename) { 804 if (access(renamed_file_name, F_OK) == 0) { 805 if (remove(renamed_file_name) != 0) { 806 warning("Could not delete existing file %s\n", renamed_file_name); 807 can_rename = false; 808 } 809 } else { 810 // file does not exist, ok to rename 811 } 812 } 813 if (can_rename && rename(current_file_name, renamed_file_name) != 0) { 814 warning("Could not rename %s to %s\n", _file_name, renamed_file_name); 815 } 816 } 817 818 _cur_file_num++; 819 if (_cur_file_num > NumberOfGCLogFiles - 1) _cur_file_num = 0; 820 int result = jio_snprintf(current_file_name, JVM_MAXPATHLEN, "%s.%d" CURRENTAPPX, 821 _file_name, _cur_file_num); 822 if (result >= JVM_MAXPATHLEN) { 823 warning("Cannot create new log file name: %s: file name is too long.\n", current_file_name); 824 return; 825 } 826 827 _file = fopen(current_file_name, "w"); 828 829 if (_file != NULL) { 830 _bytes_written = 0L; 831 _need_close = true; 832 // reuse current_file_name for time_msg 833 jio_snprintf(current_file_name, JVM_MAXPATHLEN, 834 "%s.%d", _file_name, _cur_file_num); 835 jio_snprintf(time_msg, sizeof(time_msg), "%s GC log file created %s\n", 836 os::local_time_string((char *)time_str, sizeof(time_str)), current_file_name); 837 write(time_msg, strlen(time_msg)); 838 839 if (out != NULL) { 840 out->print("%s", time_msg); 841 } 842 843 dump_loggc_header(); 844 // remove the existing file 845 if (access(current_file_name, F_OK) == 0) { 846 if (remove(current_file_name) != 0) { 847 warning("Could not delete existing file %s\n", current_file_name); 848 } 849 } 850 } else { 851 warning("failed to open rotation log file %s due to %s\n" 852 "Turned off GC log file rotation\n", 853 _file_name, strerror(errno)); 854 _need_close = false; 855 FLAG_SET_DEFAULT(UseGCLogFileRotation, false); 856 } 857 } 858 859 defaultStream* defaultStream::instance = NULL; 860 int defaultStream::_output_fd = 1; 861 int defaultStream::_error_fd = 2; 862 FILE* defaultStream::_output_stream = stdout; 863 FILE* defaultStream::_error_stream = stderr; 864 865 #define LOG_MAJOR_VERSION 160 866 #define LOG_MINOR_VERSION 1 867 868 void defaultStream::init() { 869 _inited = true; 870 if (LogVMOutput || LogCompilation) { 871 init_log(); 872 } 873 } 874 875 bool defaultStream::has_log_file() { 876 // lazily create log file (at startup, LogVMOutput is false even 877 // if +LogVMOutput is used, because the flags haven't been parsed yet) 878 // For safer printing during fatal error handling, do not init logfile 879 // if a VM error has been reported. 880 if (!_inited && !is_error_reported()) init(); 881 return _log_file != NULL; 882 } 883 884 fileStream* defaultStream::open_file(const char* log_name) { 885 const char* try_name = make_log_name(log_name, NULL); 886 if (try_name == NULL) { 887 warning("Cannot open file %s: file name is too long.\n", log_name); 888 return NULL; 889 } 890 891 fileStream* file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name); 892 FREE_C_HEAP_ARRAY(char, try_name); 893 if (file->is_open()) { 894 return file; 895 } 896 897 // Try again to open the file in the temp directory. 898 delete file; 899 char warnbuf[O_BUFLEN*2]; 900 jio_snprintf(warnbuf, sizeof(warnbuf), "Warning: Cannot open log file: %s\n", log_name); 901 // Note: This feature is for maintainer use only. No need for L10N. 902 jio_print(warnbuf); 903 try_name = make_log_name(log_name, os::get_temp_directory()); 904 if (try_name == NULL) { 905 warning("Cannot open file %s: file name is too long for directory %s.\n", log_name, os::get_temp_directory()); 906 return NULL; 907 } 908 909 jio_snprintf(warnbuf, sizeof(warnbuf), 910 "Warning: Forcing option -XX:LogFile=%s\n", try_name); 911 jio_print(warnbuf); 912 913 file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name); 914 FREE_C_HEAP_ARRAY(char, try_name); 915 if (file->is_open()) { 916 return file; 917 } 918 919 delete file; 920 return NULL; 921 } 922 923 void defaultStream::init_log() { 924 // %%% Need a MutexLocker? 925 const char* log_name = LogFile != NULL ? LogFile : "hotspot_%p.log"; 926 fileStream* file = open_file(log_name); 927 928 if (file != NULL) { 929 _log_file = file; 930 _outer_xmlStream = new(ResourceObj::C_HEAP, mtInternal) xmlStream(file); 931 start_log(); 932 } else { 933 // and leave xtty as NULL 934 LogVMOutput = false; 935 DisplayVMOutput = true; 936 LogCompilation = false; 937 } 938 } 939 940 void defaultStream::start_log() { 941 xmlStream*xs = _outer_xmlStream; 942 if (this == tty) xtty = xs; 943 // Write XML header. 944 xs->print_cr("<?xml version='1.0' encoding='UTF-8'?>"); 945 // (For now, don't bother to issue a DTD for this private format.) 946 jlong time_ms = os::javaTimeMillis() - tty->time_stamp().milliseconds(); 947 // %%% Should be: jlong time_ms = os::start_time_milliseconds(), if 948 // we ever get round to introduce that method on the os class 949 xs->head("hotspot_log version='%d %d'" 950 " process='%d' time_ms='" INT64_FORMAT "'", 951 LOG_MAJOR_VERSION, LOG_MINOR_VERSION, 952 os::current_process_id(), (int64_t)time_ms); 953 // Write VM version header immediately. 954 xs->head("vm_version"); 955 xs->head("name"); xs->text("%s", VM_Version::vm_name()); xs->cr(); 956 xs->tail("name"); 957 xs->head("release"); xs->text("%s", VM_Version::vm_release()); xs->cr(); 958 xs->tail("release"); 959 xs->head("info"); xs->text("%s", VM_Version::internal_vm_info_string()); xs->cr(); 960 xs->tail("info"); 961 xs->tail("vm_version"); 962 // Record information about the command-line invocation. 963 xs->head("vm_arguments"); // Cf. Arguments::print_on() 964 if (Arguments::num_jvm_flags() > 0) { 965 xs->head("flags"); 966 Arguments::print_jvm_flags_on(xs->text()); 967 xs->tail("flags"); 968 } 969 if (Arguments::num_jvm_args() > 0) { 970 xs->head("args"); 971 Arguments::print_jvm_args_on(xs->text()); 972 xs->tail("args"); 973 } 974 if (Arguments::java_command() != NULL) { 975 xs->head("command"); xs->text()->print_cr("%s", Arguments::java_command()); 976 xs->tail("command"); 977 } 978 if (Arguments::sun_java_launcher() != NULL) { 979 xs->head("launcher"); xs->text()->print_cr("%s", Arguments::sun_java_launcher()); 980 xs->tail("launcher"); 981 } 982 if (Arguments::system_properties() != NULL) { 983 xs->head("properties"); 984 // Print it as a java-style property list. 985 // System properties don't generally contain newlines, so don't bother with unparsing. 986 outputStream *text = xs->text(); 987 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { 988 // Print in two stages to avoid problems with long 989 // keys/values. 990 text->print_raw(p->key()); 991 text->put('='); 992 text->print_raw_cr(p->value()); 993 } 994 xs->tail("properties"); 995 } 996 xs->tail("vm_arguments"); 997 // tty output per se is grouped under the <tty>...</tty> element. 998 xs->head("tty"); 999 // All further non-markup text gets copied to the tty: 1000 xs->_text = this; // requires friend declaration! 1001 } 1002 1003 // finish_log() is called during normal VM shutdown. finish_log_on_error() is 1004 // called by ostream_abort() after a fatal error. 1005 // 1006 void defaultStream::finish_log() { 1007 xmlStream* xs = _outer_xmlStream; 1008 xs->done("tty"); 1009 1010 // Other log forks are appended here, at the End of Time: 1011 CompileLog::finish_log(xs->out()); // write compile logging, if any, now 1012 1013 xs->done("hotspot_log"); 1014 xs->flush(); 1015 1016 fileStream* file = _log_file; 1017 _log_file = NULL; 1018 1019 delete _outer_xmlStream; 1020 _outer_xmlStream = NULL; 1021 1022 file->flush(); 1023 delete file; 1024 } 1025 1026 void defaultStream::finish_log_on_error(char *buf, int buflen) { 1027 xmlStream* xs = _outer_xmlStream; 1028 1029 if (xs && xs->out()) { 1030 1031 xs->done_raw("tty"); 1032 1033 // Other log forks are appended here, at the End of Time: 1034 CompileLog::finish_log_on_error(xs->out(), buf, buflen); // write compile logging, if any, now 1035 1036 xs->done_raw("hotspot_log"); 1037 xs->flush(); 1038 1039 fileStream* file = _log_file; 1040 _log_file = NULL; 1041 _outer_xmlStream = NULL; 1042 1043 if (file) { 1044 file->flush(); 1045 1046 // Can't delete or close the file because delete and fclose aren't 1047 // async-safe. We are about to die, so leave it to the kernel. 1048 // delete file; 1049 } 1050 } 1051 } 1052 1053 intx defaultStream::hold(intx writer_id) { 1054 bool has_log = has_log_file(); // check before locking 1055 if (// impossible, but who knows? 1056 writer_id == NO_WRITER || 1057 1058 // bootstrap problem 1059 tty_lock == NULL || 1060 1061 // can't grab a lock or call Thread::current() if TLS isn't initialized 1062 ThreadLocalStorage::thread() == NULL || 1063 1064 // developer hook 1065 !SerializeVMOutput || 1066 1067 // VM already unhealthy 1068 is_error_reported() || 1069 1070 // safepoint == global lock (for VM only) 1071 (SafepointSynchronize::is_synchronizing() && 1072 Thread::current()->is_VM_thread()) 1073 ) { 1074 // do not attempt to lock unless we know the thread and the VM is healthy 1075 return NO_WRITER; 1076 } 1077 if (_writer == writer_id) { 1078 // already held, no need to re-grab the lock 1079 return NO_WRITER; 1080 } 1081 tty_lock->lock_without_safepoint_check(); 1082 // got the lock 1083 if (writer_id != _last_writer) { 1084 if (has_log) { 1085 _log_file->bol(); 1086 // output a hint where this output is coming from: 1087 _log_file->print_cr("<writer thread='" UINTX_FORMAT "'/>", writer_id); 1088 } 1089 _last_writer = writer_id; 1090 } 1091 _writer = writer_id; 1092 return writer_id; 1093 } 1094 1095 void defaultStream::release(intx holder) { 1096 if (holder == NO_WRITER) { 1097 // nothing to release: either a recursive lock, or we scribbled (too bad) 1098 return; 1099 } 1100 if (_writer != holder) { 1101 return; // already unlocked, perhaps via break_tty_lock_for_safepoint 1102 } 1103 _writer = NO_WRITER; 1104 tty_lock->unlock(); 1105 } 1106 1107 1108 // Yuck: jio_print does not accept char*/len. 1109 static void call_jio_print(const char* s, size_t len) { 1110 char buffer[O_BUFLEN+100]; 1111 if (len > sizeof(buffer)-1) { 1112 warning("increase O_BUFLEN in ostream.cpp -- output truncated"); 1113 len = sizeof(buffer)-1; 1114 } 1115 strncpy(buffer, s, len); 1116 buffer[len] = '\0'; 1117 jio_print(buffer); 1118 } 1119 1120 1121 void defaultStream::write(const char* s, size_t len) { 1122 intx thread_id = os::current_thread_id(); 1123 intx holder = hold(thread_id); 1124 1125 if (DisplayVMOutput && 1126 (_outer_xmlStream == NULL || !_outer_xmlStream->inside_attrs())) { 1127 // print to output stream. It can be redirected by a vfprintf hook 1128 if (s[len] == '\0') { 1129 jio_print(s); 1130 } else { 1131 call_jio_print(s, len); 1132 } 1133 } 1134 1135 // print to log file 1136 if (has_log_file()) { 1137 int nl0 = _newlines; 1138 xmlTextStream::write(s, len); 1139 // flush the log file too, if there were any newlines 1140 if (nl0 != _newlines){ 1141 flush(); 1142 } 1143 } else { 1144 update_position(s, len); 1145 } 1146 1147 release(holder); 1148 } 1149 1150 intx ttyLocker::hold_tty() { 1151 if (defaultStream::instance == NULL) return defaultStream::NO_WRITER; 1152 intx thread_id = os::current_thread_id(); 1153 return defaultStream::instance->hold(thread_id); 1154 } 1155 1156 void ttyLocker::release_tty(intx holder) { 1157 if (holder == defaultStream::NO_WRITER) return; 1158 defaultStream::instance->release(holder); 1159 } 1160 1161 bool ttyLocker::release_tty_if_locked() { 1162 intx thread_id = os::current_thread_id(); 1163 if (defaultStream::instance->writer() == thread_id) { 1164 // release the lock and return true so callers know if was 1165 // previously held. 1166 release_tty(thread_id); 1167 return true; 1168 } 1169 return false; 1170 } 1171 1172 void ttyLocker::break_tty_lock_for_safepoint(intx holder) { 1173 if (defaultStream::instance != NULL && 1174 defaultStream::instance->writer() == holder) { 1175 if (xtty != NULL) { 1176 xtty->print_cr("<!-- safepoint while printing -->"); 1177 } 1178 defaultStream::instance->release(holder); 1179 } 1180 // (else there was no lock to break) 1181 } 1182 1183 void ostream_init() { 1184 if (defaultStream::instance == NULL) { 1185 defaultStream::instance = new(ResourceObj::C_HEAP, mtInternal) defaultStream(); 1186 tty = defaultStream::instance; 1187 1188 // We want to ensure that time stamps in GC logs consider time 0 1189 // the time when the JVM is initialized, not the first time we ask 1190 // for a time stamp. So, here, we explicitly update the time stamp 1191 // of tty. 1192 tty->time_stamp().update_to(1); 1193 } 1194 } 1195 1196 void ostream_init_log() { 1197 // For -Xloggc:<file> option - called in runtime/thread.cpp 1198 // Note : this must be called AFTER ostream_init() 1199 1200 gclog_or_tty = tty; // default to tty 1201 if (Arguments::gc_log_filename() != NULL) { 1202 fileStream * gclog = new(ResourceObj::C_HEAP, mtInternal) 1203 gcLogFileStream(Arguments::gc_log_filename()); 1204 if (gclog->is_open()) { 1205 // now we update the time stamp of the GC log to be synced up 1206 // with tty. 1207 gclog->time_stamp().update_to(tty->time_stamp().ticks()); 1208 } 1209 gclog_or_tty = gclog; 1210 } 1211 1212 #if INCLUDE_CDS 1213 // For -XX:DumpLoadedClassList=<file> option 1214 if (DumpLoadedClassList != NULL) { 1215 const char* list_name = make_log_name(DumpLoadedClassList, NULL); 1216 classlist_file = new(ResourceObj::C_HEAP, mtInternal) 1217 fileStream(list_name); 1218 FREE_C_HEAP_ARRAY(char, list_name); 1219 } 1220 #endif 1221 1222 // If we haven't lazily initialized the logfile yet, do it now, 1223 // to avoid the possibility of lazy initialization during a VM 1224 // crash, which can affect the stability of the fatal error handler. 1225 defaultStream::instance->has_log_file(); 1226 } 1227 1228 // ostream_exit() is called during normal VM exit to finish log files, flush 1229 // output and free resource. 1230 void ostream_exit() { 1231 static bool ostream_exit_called = false; 1232 if (ostream_exit_called) return; 1233 ostream_exit_called = true; 1234 #if INCLUDE_CDS 1235 if (classlist_file != NULL) { 1236 delete classlist_file; 1237 } 1238 #endif 1239 if (gclog_or_tty != tty) { 1240 delete gclog_or_tty; 1241 } 1242 { 1243 // we temporaly disable PrintMallocFree here 1244 // as otherwise it'll lead to using of almost deleted 1245 // tty or defaultStream::instance in logging facility 1246 // of HeapFree(), see 6391258 1247 DEBUG_ONLY(FlagSetting fs(PrintMallocFree, false);) 1248 if (tty != defaultStream::instance) { 1249 delete tty; 1250 } 1251 if (defaultStream::instance != NULL) { 1252 delete defaultStream::instance; 1253 } 1254 } 1255 tty = NULL; 1256 xtty = NULL; 1257 gclog_or_tty = NULL; 1258 defaultStream::instance = NULL; 1259 } 1260 1261 // ostream_abort() is called by os::abort() when VM is about to die. 1262 void ostream_abort() { 1263 // Here we can't delete gclog_or_tty and tty, just flush their output 1264 if (gclog_or_tty) gclog_or_tty->flush(); 1265 if (tty) tty->flush(); 1266 1267 if (defaultStream::instance != NULL) { 1268 static char buf[4096]; 1269 defaultStream::instance->finish_log_on_error(buf, sizeof(buf)); 1270 } 1271 } 1272 1273 staticBufferStream::staticBufferStream(char* buffer, size_t buflen, 1274 outputStream *outer_stream) { 1275 _buffer = buffer; 1276 _buflen = buflen; 1277 _outer_stream = outer_stream; 1278 // compile task prints time stamp relative to VM start 1279 _stamp.update_to(1); 1280 } 1281 1282 void staticBufferStream::write(const char* c, size_t len) { 1283 _outer_stream->print_raw(c, (int)len); 1284 } 1285 1286 void staticBufferStream::flush() { 1287 _outer_stream->flush(); 1288 } 1289 1290 void staticBufferStream::print(const char* format, ...) { 1291 va_list ap; 1292 va_start(ap, format); 1293 size_t len; 1294 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, false, len); 1295 write(str, len); 1296 va_end(ap); 1297 } 1298 1299 void staticBufferStream::print_cr(const char* format, ...) { 1300 va_list ap; 1301 va_start(ap, format); 1302 size_t len; 1303 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, true, len); 1304 write(str, len); 1305 va_end(ap); 1306 } 1307 1308 void staticBufferStream::vprint(const char *format, va_list argptr) { 1309 size_t len; 1310 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, false, len); 1311 write(str, len); 1312 } 1313 1314 void staticBufferStream::vprint_cr(const char* format, va_list argptr) { 1315 size_t len; 1316 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, true, len); 1317 write(str, len); 1318 } 1319 1320 bufferedStream::bufferedStream(size_t initial_size, size_t bufmax) : outputStream() { 1321 buffer_length = initial_size; 1322 buffer = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal); 1323 buffer_pos = 0; 1324 buffer_fixed = false; 1325 buffer_max = bufmax; 1326 } 1327 1328 bufferedStream::bufferedStream(char* fixed_buffer, size_t fixed_buffer_size, size_t bufmax) : outputStream() { 1329 buffer_length = fixed_buffer_size; 1330 buffer = fixed_buffer; 1331 buffer_pos = 0; 1332 buffer_fixed = true; 1333 buffer_max = bufmax; 1334 } 1335 1336 void bufferedStream::write(const char* s, size_t len) { 1337 1338 if(buffer_pos + len > buffer_max) { 1339 flush(); 1340 } 1341 1342 size_t end = buffer_pos + len; 1343 if (end >= buffer_length) { 1344 if (buffer_fixed) { 1345 // if buffer cannot resize, silently truncate 1346 len = buffer_length - buffer_pos - 1; 1347 } else { 1348 // For small overruns, double the buffer. For larger ones, 1349 // increase to the requested size. 1350 if (end < buffer_length * 2) { 1351 end = buffer_length * 2; 1352 } 1353 buffer = REALLOC_C_HEAP_ARRAY(char, buffer, end, mtInternal); 1354 buffer_length = end; 1355 } 1356 } 1357 memcpy(buffer + buffer_pos, s, len); 1358 buffer_pos += len; 1359 update_position(s, len); 1360 } 1361 1362 char* bufferedStream::as_string() { 1363 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1); 1364 strncpy(copy, buffer, buffer_pos); 1365 copy[buffer_pos] = 0; // terminating null 1366 return copy; 1367 } 1368 1369 bufferedStream::~bufferedStream() { 1370 if (!buffer_fixed) { 1371 FREE_C_HEAP_ARRAY(char, buffer); 1372 } 1373 } 1374 1375 #ifndef PRODUCT 1376 1377 #if defined(SOLARIS) || defined(LINUX) || defined(AIX) || defined(_ALLBSD_SOURCE) 1378 #include <sys/types.h> 1379 #include <sys/socket.h> 1380 #include <netinet/in.h> 1381 #include <arpa/inet.h> 1382 #endif 1383 1384 // Network access 1385 networkStream::networkStream() : bufferedStream(1024*10, 1024*10) { 1386 1387 _socket = -1; 1388 1389 int result = os::socket(AF_INET, SOCK_STREAM, 0); 1390 if (result <= 0) { 1391 assert(false, "Socket could not be created!"); 1392 } else { 1393 _socket = result; 1394 } 1395 } 1396 1397 int networkStream::read(char *buf, size_t len) { 1398 return os::recv(_socket, buf, (int)len, 0); 1399 } 1400 1401 void networkStream::flush() { 1402 if (size() != 0) { 1403 int result = os::raw_send(_socket, (char *)base(), size(), 0); 1404 assert(result != -1, "connection error"); 1405 assert(result == (int)size(), "didn't send enough data"); 1406 } 1407 reset(); 1408 } 1409 1410 networkStream::~networkStream() { 1411 close(); 1412 } 1413 1414 void networkStream::close() { 1415 if (_socket != -1) { 1416 flush(); 1417 os::socket_close(_socket); 1418 _socket = -1; 1419 } 1420 } 1421 1422 bool networkStream::connect(const char *ip, short port) { 1423 1424 struct sockaddr_in server; 1425 server.sin_family = AF_INET; 1426 server.sin_port = htons(port); 1427 1428 server.sin_addr.s_addr = inet_addr(ip); 1429 if (server.sin_addr.s_addr == (uint32_t)-1) { 1430 struct hostent* host = os::get_host_by_name((char*)ip); 1431 if (host != NULL) { 1432 memcpy(&server.sin_addr, host->h_addr_list[0], host->h_length); 1433 } else { 1434 return false; 1435 } 1436 } 1437 1438 1439 int result = os::connect(_socket, (struct sockaddr*)&server, sizeof(struct sockaddr_in)); 1440 return (result >= 0); 1441 } 1442 1443 #endif 1444 1445 void logStream::write(const char* s, size_t len) { 1446 if (len > 0 && s[len - 1] == '\n') { 1447 _current_line.write(s, len - 1); 1448 _log_func(_current_line.as_string()); 1449 _current_line.reset(); 1450 } else { 1451 _current_line.write(s, len); 1452 } 1453 update_position(s, len); 1454 }