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
38 extern "C" void jio_print(const char* s); // Declarationtion of jvm method
39
40 outputStream::outputStream(int width) {
41 _width = width;
42 _position = 0;
43 _newlines = 0;
44 _precount = 0;
45 _indentation = 0;
46 }
47
48 outputStream::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
57 void 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.
76 const 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
121 void 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
131 void 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
141 void 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
148 void 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
155 void outputStream::fill_to(int col) {
156 int need_fill = col - position();
157 sp(need_fill);
158 }
159
160 void 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
169 void 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
177 void 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
194 void outputStream::cr() {
195 this->write("\n", 1);
196 }
197
198 void 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
210 void 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
221 void 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
241 void 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
249 outputStream& outputStream::indent() {
250 while (_position < _indentation) sp();
251 return *this;
252 }
253
254 void outputStream::print_jlong(jlong value) {
255 print(JLONG_FORMAT, value);
256 }
257
258 void 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 */
273 void 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
303 stringStream::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
312 stringStream::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
319 void 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
353 char* 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
360 stringStream::~stringStream() {}
361
362 xmlStream* xtty;
363 outputStream* tty;
364 outputStream* gclog_or_tty;
365 CDS_ONLY(fileStream* classlist_file;) // Only dump the classes that can be stored into the CDS archive
366 extern Mutex* tty_lock;
367
368 #define EXTRACHARLEN 32
369 #define CURRENTAPPX ".current"
370 // convert YYYY-MM-DD HH:MM:SS to YYYY-MM-DD_HH-MM-SS
371 char* get_datetime_string(char *buf, size_t len) {
372 os::local_time_string(buf, len);
373 int i = (int)strlen(buf);
374 while (i-- >= 0) {
375 if (buf[i] == ' ') buf[i] = '_';
376 else if (buf[i] == ':') buf[i] = '-';
377 }
378 return buf;
379 }
380
381 static const char* make_log_name_internal(const char* log_name, const char* force_directory,
382 int pid, const char* tms) {
383 const char* basename = log_name;
384 char file_sep = os::file_separator()[0];
385 const char* cp;
386 char pid_text[32];
387
388 for (cp = log_name; *cp != '\0'; cp++) {
389 if (*cp == '/' || *cp == file_sep) {
390 basename = cp + 1;
391 }
392 }
393 const char* nametail = log_name;
394 // Compute buffer length
395 size_t buffer_length;
396 if (force_directory != NULL) {
397 buffer_length = strlen(force_directory) + strlen(os::file_separator()) +
398 strlen(basename) + 1;
399 } else {
400 buffer_length = strlen(log_name) + 1;
401 }
402
403 const char* pts = strstr(basename, "%p");
404 int pid_pos = (pts == NULL) ? -1 : (pts - nametail);
405
406 if (pid_pos >= 0) {
407 jio_snprintf(pid_text, sizeof(pid_text), "pid%u", pid);
408 buffer_length += strlen(pid_text);
409 }
410
411 pts = strstr(basename, "%t");
412 int tms_pos = (pts == NULL) ? -1 : (pts - nametail);
413 if (tms_pos >= 0) {
414 buffer_length += strlen(tms);
415 }
416
417 // File name is too long.
418 if (buffer_length > JVM_MAXPATHLEN) {
419 return NULL;
420 }
421
422 // Create big enough buffer.
423 char *buf = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal);
424
425 strcpy(buf, "");
426 if (force_directory != NULL) {
427 strcat(buf, force_directory);
428 strcat(buf, os::file_separator());
429 nametail = basename; // completely skip directory prefix
430 }
431
432 // who is first, %p or %t?
433 int first = -1, second = -1;
434 const char *p1st = NULL;
435 const char *p2nd = NULL;
436
437 if (pid_pos >= 0 && tms_pos >= 0) {
438 // contains both %p and %t
439 if (pid_pos < tms_pos) {
440 // case foo%pbar%tmonkey.log
441 first = pid_pos;
442 p1st = pid_text;
443 second = tms_pos;
444 p2nd = tms;
445 } else {
446 // case foo%tbar%pmonkey.log
447 first = tms_pos;
448 p1st = tms;
449 second = pid_pos;
450 p2nd = pid_text;
451 }
452 } else if (pid_pos >= 0) {
453 // contains %p only
454 first = pid_pos;
455 p1st = pid_text;
456 } else if (tms_pos >= 0) {
457 // contains %t only
458 first = tms_pos;
459 p1st = tms;
460 }
461
462 int buf_pos = (int)strlen(buf);
463 const char* tail = nametail;
464
465 if (first >= 0) {
466 tail = nametail + first + 2;
467 strncpy(&buf[buf_pos], nametail, first);
468 strcpy(&buf[buf_pos + first], p1st);
469 buf_pos = (int)strlen(buf);
470 if (second >= 0) {
471 strncpy(&buf[buf_pos], tail, second - first - 2);
472 strcpy(&buf[buf_pos + second - first - 2], p2nd);
473 tail = nametail + second + 2;
474 }
475 }
476 strcat(buf, tail); // append rest of name, or all of name
477 return buf;
478 }
479
480 // log_name comes from -XX:LogFile=log_name, -Xloggc:log_name or
481 // -XX:DumpLoadedClassList=<file_name>
482 // in log_name, %p => pid1234 and
483 // %t => YYYY-MM-DD_HH-MM-SS
484 static const char* make_log_name(const char* log_name, const char* force_directory) {
485 char timestr[32];
486 get_datetime_string(timestr, sizeof(timestr));
487 return make_log_name_internal(log_name, force_directory, os::current_process_id(),
488 timestr);
489 }
490
491 #ifndef PRODUCT
492 void test_loggc_filename() {
493 int pid;
494 char tms[32];
495 char i_result[JVM_MAXPATHLEN];
496 const char* o_result;
497 get_datetime_string(tms, sizeof(tms));
498 pid = os::current_process_id();
499
500 // test.log
501 jio_snprintf(i_result, JVM_MAXPATHLEN, "test.log", tms);
502 o_result = make_log_name_internal("test.log", NULL, pid, tms);
503 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"test.log\", NULL)");
504 FREE_C_HEAP_ARRAY(char, o_result);
505
506 // test-%t-%p.log
507 jio_snprintf(i_result, JVM_MAXPATHLEN, "test-%s-pid%u.log", tms, pid);
508 o_result = make_log_name_internal("test-%t-%p.log", NULL, pid, tms);
509 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"test-%%t-%%p.log\", NULL)");
510 FREE_C_HEAP_ARRAY(char, o_result);
511
512 // test-%t%p.log
513 jio_snprintf(i_result, JVM_MAXPATHLEN, "test-%spid%u.log", tms, pid);
514 o_result = make_log_name_internal("test-%t%p.log", NULL, pid, tms);
515 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"test-%%t%%p.log\", NULL)");
516 FREE_C_HEAP_ARRAY(char, o_result);
517
518 // %p%t.log
519 jio_snprintf(i_result, JVM_MAXPATHLEN, "pid%u%s.log", pid, tms);
520 o_result = make_log_name_internal("%p%t.log", NULL, pid, tms);
521 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"%%p%%t.log\", NULL)");
522 FREE_C_HEAP_ARRAY(char, o_result);
523
524 // %p-test.log
525 jio_snprintf(i_result, JVM_MAXPATHLEN, "pid%u-test.log", pid);
526 o_result = make_log_name_internal("%p-test.log", NULL, pid, tms);
527 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"%%p-test.log\", NULL)");
528 FREE_C_HEAP_ARRAY(char, o_result);
529
530 // %t.log
531 jio_snprintf(i_result, JVM_MAXPATHLEN, "%s.log", tms);
532 o_result = make_log_name_internal("%t.log", NULL, pid, tms);
533 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"%%t.log\", NULL)");
534 FREE_C_HEAP_ARRAY(char, o_result);
535
536 {
537 // longest filename
538 char longest_name[JVM_MAXPATHLEN];
539 memset(longest_name, 'a', sizeof(longest_name));
540 longest_name[JVM_MAXPATHLEN - 1] = '\0';
541 o_result = make_log_name_internal((const char*)&longest_name, NULL, pid, tms);
542 assert(strcmp(longest_name, o_result) == 0, err_msg("longest name does not match. expected '%s' but got '%s'", longest_name, o_result));
543 FREE_C_HEAP_ARRAY(char, o_result);
544 }
545
546 {
547 // too long file name
548 char too_long_name[JVM_MAXPATHLEN + 100];
549 int too_long_length = sizeof(too_long_name);
550 memset(too_long_name, 'a', too_long_length);
551 too_long_name[too_long_length - 1] = '\0';
552 o_result = make_log_name_internal((const char*)&too_long_name, NULL, pid, tms);
553 assert(o_result == NULL, err_msg("Too long file name should return NULL, but got '%s'", o_result));
554 }
555
556 {
557 // too long with timestamp
558 char longest_name[JVM_MAXPATHLEN];
559 memset(longest_name, 'a', JVM_MAXPATHLEN);
560 longest_name[JVM_MAXPATHLEN - 3] = '%';
561 longest_name[JVM_MAXPATHLEN - 2] = 't';
562 longest_name[JVM_MAXPATHLEN - 1] = '\0';
563 o_result = make_log_name_internal((const char*)&longest_name, NULL, pid, tms);
564 assert(o_result == NULL, err_msg("Too long file name after timestamp expansion should return NULL, but got '%s'", o_result));
565 }
566
567 {
568 // too long with pid
569 char longest_name[JVM_MAXPATHLEN];
570 memset(longest_name, 'a', JVM_MAXPATHLEN);
571 longest_name[JVM_MAXPATHLEN - 3] = '%';
572 longest_name[JVM_MAXPATHLEN - 2] = 'p';
573 longest_name[JVM_MAXPATHLEN - 1] = '\0';
574 o_result = make_log_name_internal((const char*)&longest_name, NULL, pid, tms);
575 assert(o_result == NULL, err_msg("Too long file name after pid expansion should return NULL, but got '%s'", o_result));
576 }
577 }
578 #endif // PRODUCT
579
580 fileStream::fileStream(const char* file_name) {
581 _file = fopen(file_name, "w");
582 if (_file != NULL) {
583 _need_close = true;
584 } else {
585 warning("Cannot open file %s due to %s\n", file_name, strerror(errno));
586 _need_close = false;
587 }
588 }
589
590 fileStream::fileStream(const char* file_name, const char* opentype) {
591 _file = fopen(file_name, opentype);
592 if (_file != NULL) {
593 _need_close = true;
594 } else {
595 warning("Cannot open file %s due to %s\n", file_name, strerror(errno));
596 _need_close = false;
597 }
598 }
599
600 void fileStream::write(const char* s, size_t len) {
601 if (_file != NULL) {
602 // Make an unused local variable to avoid warning from gcc 4.x compiler.
603 size_t count = fwrite(s, 1, len, _file);
604 }
605 update_position(s, len);
606 }
607
608 long fileStream::fileSize() {
609 long size = -1;
610 if (_file != NULL) {
611 long pos = ::ftell(_file);
612 if (::fseek(_file, 0, SEEK_END) == 0) {
613 size = ::ftell(_file);
614 }
615 ::fseek(_file, pos, SEEK_SET);
616 }
617 return size;
618 }
619
620 char* fileStream::readln(char *data, int count ) {
621 char * ret = ::fgets(data, count, _file);
622 //Get rid of annoying \n char
623 data[::strlen(data)-1] = '\0';
624 return ret;
625 }
626
627 fileStream::~fileStream() {
628 if (_file != NULL) {
629 if (_need_close) fclose(_file);
630 _file = NULL;
631 }
632 }
633
634 void fileStream::flush() {
635 fflush(_file);
636 }
637
638 fdStream::fdStream(const char* file_name) {
639 _fd = open(file_name, O_WRONLY | O_CREAT | O_TRUNC, 0666);
640 _need_close = true;
641 }
642
643 fdStream::~fdStream() {
644 if (_fd != -1) {
645 if (_need_close) close(_fd);
646 _fd = -1;
647 }
648 }
649
650 void fdStream::write(const char* s, size_t len) {
651 if (_fd != -1) {
652 // Make an unused local variable to avoid warning from gcc 4.x compiler.
653 size_t count = ::write(_fd, s, (int)len);
654 }
655 update_position(s, len);
656 }
657
658 // dump vm version, os version, platform info, build id,
659 // memory usage and command line flags into header
660 void gcLogFileStream::dump_loggc_header() {
661 if (is_open()) {
662 print_cr("%s", Abstract_VM_Version::internal_vm_info_string());
663 os::print_memory_info(this);
664 print("CommandLine flags: ");
665 CommandLineFlags::printSetFlags(this);
666 }
667 }
668
669 gcLogFileStream::~gcLogFileStream() {
670 if (_file != NULL) {
671 if (_need_close) fclose(_file);
672 _file = NULL;
673 }
674 if (_file_name != NULL) {
675 FREE_C_HEAP_ARRAY(char, _file_name);
676 _file_name = NULL;
677 }
678 }
679
680 gcLogFileStream::gcLogFileStream(const char* file_name) {
681 _cur_file_num = 0;
682 _bytes_written = 0L;
683 _file_name = make_log_name(file_name, NULL);
684
685 if (_file_name == NULL) {
686 warning("Cannot open file %s: file name is too long.\n", file_name);
687 _need_close = false;
688 UseGCLogFileRotation = false;
689 return;
690 }
691
692 // gc log file rotation
693 if (UseGCLogFileRotation && NumberOfGCLogFiles > 1) {
694 char tempbuf[JVM_MAXPATHLEN];
695 jio_snprintf(tempbuf, sizeof(tempbuf), "%s.%d" CURRENTAPPX, _file_name, _cur_file_num);
696 _file = fopen(tempbuf, "w");
697 } else {
698 _file = fopen(_file_name, "w");
699 }
700 if (_file != NULL) {
701 _need_close = true;
702 dump_loggc_header();
703 } else {
704 warning("Cannot open file %s due to %s\n", _file_name, strerror(errno));
705 _need_close = false;
706 }
707 }
708
709 void gcLogFileStream::write(const char* s, size_t len) {
710 if (_file != NULL) {
711 size_t count = fwrite(s, 1, len, _file);
712 _bytes_written += count;
713 }
714 update_position(s, len);
715 }
716
717 // rotate_log must be called from VMThread at safepoint. In case need change parameters
718 // for gc log rotation from thread other than VMThread, a sub type of VM_Operation
719 // should be created and be submitted to VMThread's operation queue. DO NOT call this
720 // function directly. Currently, it is safe to rotate log at safepoint through VMThread.
721 // That is, no mutator threads and concurrent GC threads run parallel with VMThread to
722 // write to gc log file at safepoint. If in future, changes made for mutator threads or
723 // concurrent GC threads to run parallel with VMThread at safepoint, write and rotate_log
724 // must be synchronized.
725 void gcLogFileStream::rotate_log(bool force, outputStream* out) {
726 char time_msg[O_BUFLEN];
727 char time_str[EXTRACHARLEN];
728 char current_file_name[JVM_MAXPATHLEN];
729 char renamed_file_name[JVM_MAXPATHLEN];
730
731 if (!should_rotate(force)) {
732 return;
733 }
734
735 #ifdef ASSERT
736 Thread *thread = Thread::current();
737 assert(thread == NULL ||
738 (thread->is_VM_thread() && SafepointSynchronize::is_at_safepoint()),
739 "Must be VMThread at safepoint");
740 #endif
741 if (NumberOfGCLogFiles == 1) {
742 // rotate in same file
743 rewind();
744 _bytes_written = 0L;
745 jio_snprintf(time_msg, sizeof(time_msg), "File %s rotated at %s\n",
746 _file_name, os::local_time_string((char *)time_str, sizeof(time_str)));
747 write(time_msg, strlen(time_msg));
748
749 if (out != NULL) {
750 out->print("%s", time_msg);
751 }
752
753 dump_loggc_header();
754 return;
755 }
756
757 #if defined(_WINDOWS)
758 #ifndef F_OK
759 #define F_OK 0
760 #endif
761 #endif // _WINDOWS
762
763 // rotate file in names extended_filename.0, extended_filename.1, ...,
764 // extended_filename.<NumberOfGCLogFiles - 1>. Current rotation file name will
765 // have a form of extended_filename.<i>.current where i is the current rotation
766 // file number. After it reaches max file size, the file will be saved and renamed
767 // with .current removed from its tail.
768 if (_file != NULL) {
769 jio_snprintf(renamed_file_name, JVM_MAXPATHLEN, "%s.%d",
770 _file_name, _cur_file_num);
771 int result = jio_snprintf(current_file_name, JVM_MAXPATHLEN,
772 "%s.%d" CURRENTAPPX, _file_name, _cur_file_num);
773 if (result >= JVM_MAXPATHLEN) {
774 warning("Cannot create new log file name: %s: file name is too long.\n", current_file_name);
775 return;
776 }
777
778 const char* msg = force ? "GC log rotation request has been received."
779 : "GC log file has reached the maximum size.";
780 jio_snprintf(time_msg, sizeof(time_msg), "%s %s Saved as %s\n",
781 os::local_time_string((char *)time_str, sizeof(time_str)),
782 msg, renamed_file_name);
783 write(time_msg, strlen(time_msg));
784
785 if (out != NULL) {
786 out->print("%s", time_msg);
787 }
788
789 fclose(_file);
790 _file = NULL;
791
792 bool can_rename = true;
793 if (access(current_file_name, F_OK) != 0) {
794 // current file does not exist?
795 warning("No source file exists, cannot rename\n");
796 can_rename = false;
797 }
798 if (can_rename) {
799 if (access(renamed_file_name, F_OK) == 0) {
800 if (remove(renamed_file_name) != 0) {
801 warning("Could not delete existing file %s\n", renamed_file_name);
802 can_rename = false;
803 }
804 } else {
805 // file does not exist, ok to rename
806 }
807 }
808 if (can_rename && rename(current_file_name, renamed_file_name) != 0) {
809 warning("Could not rename %s to %s\n", _file_name, renamed_file_name);
810 }
811 }
812
813 _cur_file_num++;
814 if (_cur_file_num > NumberOfGCLogFiles - 1) _cur_file_num = 0;
815 int result = jio_snprintf(current_file_name, JVM_MAXPATHLEN, "%s.%d" CURRENTAPPX,
816 _file_name, _cur_file_num);
817 if (result >= JVM_MAXPATHLEN) {
818 warning("Cannot create new log file name: %s: file name is too long.\n", current_file_name);
819 return;
820 }
821
822 _file = fopen(current_file_name, "w");
823
824 if (_file != NULL) {
825 _bytes_written = 0L;
826 _need_close = true;
827 // reuse current_file_name for time_msg
828 jio_snprintf(current_file_name, JVM_MAXPATHLEN,
829 "%s.%d", _file_name, _cur_file_num);
830 jio_snprintf(time_msg, sizeof(time_msg), "%s GC log file created %s\n",
831 os::local_time_string((char *)time_str, sizeof(time_str)), current_file_name);
832 write(time_msg, strlen(time_msg));
833
834 if (out != NULL) {
835 out->print("%s", time_msg);
836 }
837
838 dump_loggc_header();
839 // remove the existing file
840 if (access(current_file_name, F_OK) == 0) {
841 if (remove(current_file_name) != 0) {
842 warning("Could not delete existing file %s\n", current_file_name);
843 }
844 }
845 } else {
846 warning("failed to open rotation log file %s due to %s\n"
847 "Turned off GC log file rotation\n",
848 _file_name, strerror(errno));
849 _need_close = false;
850 FLAG_SET_DEFAULT(UseGCLogFileRotation, false);
851 }
852 }
853
854 defaultStream* defaultStream::instance = NULL;
855 int defaultStream::_output_fd = 1;
856 int defaultStream::_error_fd = 2;
857 FILE* defaultStream::_output_stream = stdout;
858 FILE* defaultStream::_error_stream = stderr;
859
860 #define LOG_MAJOR_VERSION 160
861 #define LOG_MINOR_VERSION 1
862
863 void defaultStream::init() {
864 _inited = true;
865 if (LogVMOutput || LogCompilation) {
866 init_log();
867 }
868 }
869
870 bool defaultStream::has_log_file() {
871 // lazily create log file (at startup, LogVMOutput is false even
872 // if +LogVMOutput is used, because the flags haven't been parsed yet)
873 // For safer printing during fatal error handling, do not init logfile
874 // if a VM error has been reported.
875 if (!_inited && !is_error_reported()) init();
876 return _log_file != NULL;
877 }
878
879 fileStream* defaultStream::open_file(const char* log_name) {
880 const char* try_name = make_log_name(log_name, NULL);
881 if (try_name == NULL) {
882 warning("Cannot open file %s: file name is too long.\n", log_name);
883 return NULL;
884 }
885
886 fileStream* file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name);
887 FREE_C_HEAP_ARRAY(char, try_name);
888 if (file->is_open()) {
889 return file;
890 }
891
892 // Try again to open the file in the temp directory.
893 delete file;
894 char warnbuf[O_BUFLEN*2];
895 jio_snprintf(warnbuf, sizeof(warnbuf), "Warning: Cannot open log file: %s\n", log_name);
896 // Note: This feature is for maintainer use only. No need for L10N.
897 jio_print(warnbuf);
898 try_name = make_log_name(log_name, os::get_temp_directory());
899 if (try_name == NULL) {
900 warning("Cannot open file %s: file name is too long for directory %s.\n", log_name, os::get_temp_directory());
901 return NULL;
902 }
903
904 jio_snprintf(warnbuf, sizeof(warnbuf),
905 "Warning: Forcing option -XX:LogFile=%s\n", try_name);
906 jio_print(warnbuf);
907
908 file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name);
909 FREE_C_HEAP_ARRAY(char, try_name);
910 if (file->is_open()) {
911 return file;
912 }
913
914 delete file;
915 return NULL;
916 }
917
918 void defaultStream::init_log() {
919 // %%% Need a MutexLocker?
920 const char* log_name = LogFile != NULL ? LogFile : "hotspot_%p.log";
921 fileStream* file = open_file(log_name);
922
923 if (file != NULL) {
924 _log_file = file;
925 _outer_xmlStream = new(ResourceObj::C_HEAP, mtInternal) xmlStream(file);
926 start_log();
927 } else {
928 // and leave xtty as NULL
929 LogVMOutput = false;
930 DisplayVMOutput = true;
931 LogCompilation = false;
932 }
933 }
934
935 void defaultStream::start_log() {
936 xmlStream*xs = _outer_xmlStream;
937 if (this == tty) xtty = xs;
938 // Write XML header.
939 xs->print_cr("<?xml version='1.0' encoding='UTF-8'?>");
940 // (For now, don't bother to issue a DTD for this private format.)
941 jlong time_ms = os::javaTimeMillis() - tty->time_stamp().milliseconds();
942 // %%% Should be: jlong time_ms = os::start_time_milliseconds(), if
943 // we ever get round to introduce that method on the os class
944 xs->head("hotspot_log version='%d %d'"
945 " process='%d' time_ms='"INT64_FORMAT"'",
946 LOG_MAJOR_VERSION, LOG_MINOR_VERSION,
947 os::current_process_id(), (int64_t)time_ms);
948 // Write VM version header immediately.
949 xs->head("vm_version");
950 xs->head("name"); xs->text("%s", VM_Version::vm_name()); xs->cr();
951 xs->tail("name");
952 xs->head("release"); xs->text("%s", VM_Version::vm_release()); xs->cr();
953 xs->tail("release");
954 xs->head("info"); xs->text("%s", VM_Version::internal_vm_info_string()); xs->cr();
955 xs->tail("info");
956 xs->tail("vm_version");
957 // Record information about the command-line invocation.
958 xs->head("vm_arguments"); // Cf. Arguments::print_on()
959 if (Arguments::num_jvm_flags() > 0) {
960 xs->head("flags");
961 Arguments::print_jvm_flags_on(xs->text());
962 xs->tail("flags");
963 }
964 if (Arguments::num_jvm_args() > 0) {
965 xs->head("args");
966 Arguments::print_jvm_args_on(xs->text());
967 xs->tail("args");
968 }
969 if (Arguments::java_command() != NULL) {
970 xs->head("command"); xs->text()->print_cr("%s", Arguments::java_command());
971 xs->tail("command");
972 }
973 if (Arguments::sun_java_launcher() != NULL) {
974 xs->head("launcher"); xs->text()->print_cr("%s", Arguments::sun_java_launcher());
975 xs->tail("launcher");
976 }
977 if (Arguments::system_properties() != NULL) {
978 xs->head("properties");
979 // Print it as a java-style property list.
980 // System properties don't generally contain newlines, so don't bother with unparsing.
981 outputStream *text = xs->text();
982 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) {
983 text->print_raw(p->key());
984 text->put('=');
985 text->print_raw_cr(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);
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);
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