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