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 if current Thread isn't set
1062 Thread::current() == 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 }