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