1 /*
2 * Copyright (c) 1997, 2010, 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 "oops/oop.inline.hpp"
28 #include "runtime/arguments.hpp"
29 #include "utilities/defaultStream.hpp"
30 #include "utilities/ostream.hpp"
31 #include "utilities/top.hpp"
32 #include "utilities/xmlstream.hpp"
33 #ifdef TARGET_OS_FAMILY_linux
34 # include "os_linux.inline.hpp"
35 #endif
36 #ifdef TARGET_OS_FAMILY_solaris
37 # include "os_solaris.inline.hpp"
38 #endif
39 #ifdef TARGET_OS_FAMILY_windows
40 # include "os_windows.inline.hpp"
41 #endif
42
43 extern "C" void jio_print(const char* s); // Declarationtion of jvm method
44
45 outputStream::outputStream(int width) {
46 _width = width;
47 _position = 0;
48 _newlines = 0;
49 _precount = 0;
50 _indentation = 0;
51 }
52
53 outputStream::outputStream(int width, bool has_time_stamps) {
54 _width = width;
55 _position = 0;
56 _newlines = 0;
57 _precount = 0;
58 _indentation = 0;
59 if (has_time_stamps) _stamp.update();
60 }
61
62 void outputStream::update_position(const char* s, size_t len) {
63 for (size_t i = 0; i < len; i++) {
64 char ch = s[i];
65 if (ch == '\n') {
66 _newlines += 1;
67 _precount += _position + 1;
68 _position = 0;
69 } else if (ch == '\t') {
70 int tw = 8 - (_position & 7);
71 _position += tw;
72 _precount -= tw-1; // invariant: _precount + _position == total count
73 } else {
74 _position += 1;
75 }
76 }
77 }
78
79 // Execute a vsprintf, using the given buffer if necessary.
80 // Return a pointer to the formatted string.
81 const char* outputStream::do_vsnprintf(char* buffer, size_t buflen,
82 const char* format, va_list ap,
83 bool add_cr,
84 size_t& result_len) {
85 const char* result;
86 if (add_cr) buflen--;
87 if (!strchr(format, '%')) {
88 // constant format string
89 result = format;
90 result_len = strlen(result);
91 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate
92 } else if (format[0] == '%' && format[1] == 's' && format[2] == '\0') {
93 // trivial copy-through format string
94 result = va_arg(ap, const char*);
95 result_len = strlen(result);
96 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate
97 } else if (vsnprintf(buffer, buflen, format, ap) >= 0) {
98 result = buffer;
99 result_len = strlen(result);
100 } else {
101 DEBUG_ONLY(warning("increase O_BUFLEN in ostream.hpp -- output truncated");)
102 result = buffer;
103 result_len = buflen - 1;
104 buffer[result_len] = 0;
105 }
106 if (add_cr) {
107 if (result != buffer) {
108 strncpy(buffer, result, buflen);
109 result = buffer;
110 }
111 buffer[result_len++] = '\n';
112 buffer[result_len] = 0;
113 }
114 return result;
115 }
116
117 void outputStream::print(const char* format, ...) {
118 char buffer[O_BUFLEN];
119 va_list ap;
120 va_start(ap, format);
121 size_t len;
122 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, false, len);
123 write(str, len);
124 va_end(ap);
125 }
126
127 void outputStream::print_cr(const char* format, ...) {
128 char buffer[O_BUFLEN];
129 va_list ap;
130 va_start(ap, format);
131 size_t len;
132 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, true, len);
133 write(str, len);
134 va_end(ap);
135 }
136
137 void outputStream::vprint(const char *format, va_list argptr) {
138 char buffer[O_BUFLEN];
139 size_t len;
140 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, false, len);
141 write(str, len);
142 }
143
144 void outputStream::vprint_cr(const char* format, va_list argptr) {
145 char buffer[O_BUFLEN];
146 size_t len;
147 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, true, len);
148 write(str, len);
149 }
150
151 void outputStream::fill_to(int col) {
152 int need_fill = col - position();
153 sp(need_fill);
154 }
155
156 void outputStream::move_to(int col, int slop, int min_space) {
157 if (position() >= col + slop)
158 cr();
159 int need_fill = col - position();
160 if (need_fill < min_space)
161 need_fill = min_space;
162 sp(need_fill);
163 }
164
165 void outputStream::put(char ch) {
166 assert(ch != 0, "please fix call site");
167 char buf[] = { ch, '\0' };
168 write(buf, 1);
169 }
170
171 #define SP_USE_TABS false
172
173 void outputStream::sp(int count) {
174 if (count < 0) return;
175 if (SP_USE_TABS && count >= 8) {
176 int target = position() + count;
177 while (count >= 8) {
178 this->write("\t", 1);
179 count -= 8;
180 }
181 count = target - position();
182 }
183 while (count > 0) {
184 int nw = (count > 8) ? 8 : count;
185 this->write(" ", nw);
186 count -= nw;
187 }
188 }
189
190 void outputStream::cr() {
191 this->write("\n", 1);
192 }
193
194 void outputStream::stamp() {
195 if (! _stamp.is_updated()) {
196 _stamp.update(); // start at 0 on first call to stamp()
197 }
198
199 // outputStream::stamp() may get called by ostream_abort(), use snprintf
200 // to avoid allocating large stack buffer in print().
201 char buf[40];
202 jio_snprintf(buf, sizeof(buf), "%.3f", _stamp.seconds());
203 print_raw(buf);
204 }
205
206 void outputStream::stamp(bool guard,
207 const char* prefix,
208 const char* suffix) {
209 if (!guard) {
210 return;
211 }
212 print_raw(prefix);
213 stamp();
214 print_raw(suffix);
215 }
216
217 void outputStream::date_stamp(bool guard,
218 const char* prefix,
219 const char* suffix) {
220 if (!guard) {
221 return;
222 }
223 print_raw(prefix);
224 static const char error_time[] = "yyyy-mm-ddThh:mm:ss.mmm+zzzz";
225 static const int buffer_length = 32;
226 char buffer[buffer_length];
227 const char* iso8601_result = os::iso8601_time(buffer, buffer_length);
228 if (iso8601_result != NULL) {
229 print_raw(buffer);
230 } else {
231 print_raw(error_time);
232 }
233 print_raw(suffix);
234 return;
235 }
236
237 void outputStream::indent() {
238 while (_position < _indentation) sp();
239 }
240
241 void outputStream::print_jlong(jlong value) {
242 // N.B. Same as INT64_FORMAT
243 print(os::jlong_format_specifier(), value);
244 }
245
246 void outputStream::print_julong(julong value) {
247 // N.B. Same as UINT64_FORMAT
248 print(os::julong_format_specifier(), value);
249 }
250
251 stringStream::stringStream(size_t initial_size) : outputStream() {
252 buffer_length = initial_size;
253 buffer = NEW_RESOURCE_ARRAY(char, buffer_length);
254 buffer_pos = 0;
255 buffer_fixed = false;
256 }
257
258 // useful for output to fixed chunks of memory, such as performance counters
259 stringStream::stringStream(char* fixed_buffer, size_t fixed_buffer_size) : outputStream() {
260 buffer_length = fixed_buffer_size;
261 buffer = fixed_buffer;
262 buffer_pos = 0;
263 buffer_fixed = true;
264 }
265
266 void stringStream::write(const char* s, size_t len) {
267 size_t write_len = len; // number of non-null bytes to write
268 size_t end = buffer_pos + len + 1; // position after write and final '\0'
269 if (end > buffer_length) {
270 if (buffer_fixed) {
271 // if buffer cannot resize, silently truncate
272 end = buffer_length;
273 write_len = end - buffer_pos - 1; // leave room for the final '\0'
274 } else {
275 // For small overruns, double the buffer. For larger ones,
276 // increase to the requested size.
277 if (end < buffer_length * 2) {
278 end = buffer_length * 2;
279 }
280 char* oldbuf = buffer;
281 buffer = NEW_RESOURCE_ARRAY(char, end);
282 strncpy(buffer, oldbuf, buffer_pos);
283 buffer_length = end;
284 }
285 }
286 // invariant: buffer is always null-terminated
287 guarantee(buffer_pos + write_len + 1 <= buffer_length, "stringStream oob");
288 buffer[buffer_pos + write_len] = 0;
289 strncpy(buffer + buffer_pos, s, write_len);
290 buffer_pos += write_len;
291
292 // Note that the following does not depend on write_len.
293 // This means that position and count get updated
294 // even when overflow occurs.
295 update_position(s, len);
296 }
297
298 char* stringStream::as_string() {
299 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1);
300 strncpy(copy, buffer, buffer_pos);
301 copy[buffer_pos] = 0; // terminating null
302 return copy;
303 }
304
305 stringStream::~stringStream() {}
306
307 xmlStream* xtty;
308 outputStream* tty;
309 outputStream* gclog_or_tty;
310 extern Mutex* tty_lock;
311
312 fileStream::fileStream(const char* file_name) {
313 _file = fopen(file_name, "w");
314 _need_close = true;
315 }
316
317 fileStream::fileStream(const char* file_name, const char* opentype) {
318 _file = fopen(file_name, opentype);
319 _need_close = true;
320 }
321
322 void fileStream::write(const char* s, size_t len) {
323 if (_file != NULL) {
324 // Make an unused local variable to avoid warning from gcc 4.x compiler.
325 size_t count = fwrite(s, 1, len, _file);
326 }
327 update_position(s, len);
328 }
329
330 long fileStream::fileSize() {
331 long size = -1;
332 if (_file != NULL) {
333 long pos = ::ftell(_file);
334 if (::fseek(_file, 0, SEEK_END) == 0) {
335 size = ::ftell(_file);
336 }
337 ::fseek(_file, pos, SEEK_SET);
338 }
339 return size;
340 }
341
342 char* fileStream::readln(char *data, int count ) {
343 char * ret = ::fgets(data, count, _file);
344 //Get rid of annoying \n char
345 data[::strlen(data)-1] = '\0';
346 return ret;
347 }
348
349 fileStream::~fileStream() {
350 if (_file != NULL) {
351 if (_need_close) fclose(_file);
352 _file = NULL;
353 }
354 }
355
356 void fileStream::flush() {
357 fflush(_file);
358 }
359
360 fdStream::fdStream(const char* file_name) {
361 _fd = open(file_name, O_WRONLY | O_CREAT | O_TRUNC, 0666);
362 _need_close = true;
363 }
364
365 fdStream::~fdStream() {
366 if (_fd != -1) {
367 if (_need_close) close(_fd);
368 _fd = -1;
369 }
370 }
371
372 void fdStream::write(const char* s, size_t len) {
373 if (_fd != -1) {
374 // Make an unused local variable to avoid warning from gcc 4.x compiler.
375 size_t count = ::write(_fd, s, (int)len);
376 }
377 update_position(s, len);
378 }
379
380 defaultStream* defaultStream::instance = NULL;
381 int defaultStream::_output_fd = 1;
382 int defaultStream::_error_fd = 2;
383 FILE* defaultStream::_output_stream = stdout;
384 FILE* defaultStream::_error_stream = stderr;
385
386 #define LOG_MAJOR_VERSION 160
387 #define LOG_MINOR_VERSION 1
388
389 void defaultStream::init() {
390 _inited = true;
391 if (LogVMOutput || LogCompilation) {
392 init_log();
393 }
394 }
395
396 bool defaultStream::has_log_file() {
397 // lazily create log file (at startup, LogVMOutput is false even
398 // if +LogVMOutput is used, because the flags haven't been parsed yet)
399 // For safer printing during fatal error handling, do not init logfile
400 // if a VM error has been reported.
401 if (!_inited && !is_error_reported()) init();
402 return _log_file != NULL;
403 }
404
405 static const char* make_log_name(const char* log_name, const char* force_directory) {
406 const char* basename = log_name;
407 char file_sep = os::file_separator()[0];
408 const char* cp;
409 for (cp = log_name; *cp != '\0'; cp++) {
410 if (*cp == '/' || *cp == file_sep) {
411 basename = cp+1;
412 }
413 }
414 const char* nametail = log_name;
415
416 // Compute buffer length
417 size_t buffer_length;
418 if (force_directory != NULL) {
419 buffer_length = strlen(force_directory) + strlen(os::file_separator()) +
420 strlen(basename) + 1;
421 } else {
422 buffer_length = strlen(log_name) + 1;
423 }
424
425 const char* star = strchr(basename, '*');
426 int star_pos = (star == NULL) ? -1 : (star - nametail);
427
428 char pid[32];
429 if (star_pos >= 0) {
430 jio_snprintf(pid, sizeof(pid), "%u", os::current_process_id());
431 buffer_length += strlen(pid);
432 }
433
434 // Create big enough buffer.
435 char *buf = NEW_C_HEAP_ARRAY(char, buffer_length);
436
437 strcpy(buf, "");
438 if (force_directory != NULL) {
439 strcat(buf, force_directory);
440 strcat(buf, os::file_separator());
441 nametail = basename; // completely skip directory prefix
442 }
443
444 if (star_pos >= 0) {
445 // convert foo*bar.log to foo123bar.log
446 int buf_pos = (int) strlen(buf);
447 strncpy(&buf[buf_pos], nametail, star_pos);
448 strcpy(&buf[buf_pos + star_pos], pid);
449 nametail += star_pos + 1; // skip prefix and star
450 }
451
452 strcat(buf, nametail); // append rest of name, or all of name
453 return buf;
454 }
455
456 void defaultStream::init_log() {
457 // %%% Need a MutexLocker?
458 const char* log_name = LogFile != NULL ? LogFile : "hotspot.log";
459 const char* try_name = make_log_name(log_name, NULL);
460 fileStream* file = new(ResourceObj::C_HEAP) fileStream(try_name);
461 if (!file->is_open()) {
462 // Try again to open the file.
463 char warnbuf[O_BUFLEN*2];
464 jio_snprintf(warnbuf, sizeof(warnbuf),
465 "Warning: Cannot open log file: %s\n", try_name);
466 // Note: This feature is for maintainer use only. No need for L10N.
467 jio_print(warnbuf);
468 FREE_C_HEAP_ARRAY(char, try_name);
469 try_name = make_log_name("hs_pid*.log", os::get_temp_directory());
470 jio_snprintf(warnbuf, sizeof(warnbuf),
471 "Warning: Forcing option -XX:LogFile=%s\n", try_name);
472 jio_print(warnbuf);
473 delete file;
474 file = new(ResourceObj::C_HEAP) fileStream(try_name);
475 FREE_C_HEAP_ARRAY(char, try_name);
476 }
477 if (file->is_open()) {
478 _log_file = file;
479 xmlStream* xs = new(ResourceObj::C_HEAP) xmlStream(file);
480 _outer_xmlStream = xs;
481 if (this == tty) xtty = xs;
482 // Write XML header.
483 xs->print_cr("<?xml version='1.0' encoding='UTF-8'?>");
484 // (For now, don't bother to issue a DTD for this private format.)
485 jlong time_ms = os::javaTimeMillis() - tty->time_stamp().milliseconds();
486 // %%% Should be: jlong time_ms = os::start_time_milliseconds(), if
487 // we ever get round to introduce that method on the os class
488 xs->head("hotspot_log version='%d %d'"
489 " process='%d' time_ms='"INT64_FORMAT"'",
490 LOG_MAJOR_VERSION, LOG_MINOR_VERSION,
491 os::current_process_id(), time_ms);
492 // Write VM version header immediately.
493 xs->head("vm_version");
494 xs->head("name"); xs->text("%s", VM_Version::vm_name()); xs->cr();
495 xs->tail("name");
496 xs->head("release"); xs->text("%s", VM_Version::vm_release()); xs->cr();
497 xs->tail("release");
498 xs->head("info"); xs->text("%s", VM_Version::internal_vm_info_string()); xs->cr();
499 xs->tail("info");
500 xs->tail("vm_version");
501 // Record information about the command-line invocation.
502 xs->head("vm_arguments"); // Cf. Arguments::print_on()
503 if (Arguments::num_jvm_flags() > 0) {
504 xs->head("flags");
505 Arguments::print_jvm_flags_on(xs->text());
506 xs->tail("flags");
507 }
508 if (Arguments::num_jvm_args() > 0) {
509 xs->head("args");
510 Arguments::print_jvm_args_on(xs->text());
511 xs->tail("args");
512 }
513 if (Arguments::java_command() != NULL) {
514 xs->head("command"); xs->text()->print_cr("%s", Arguments::java_command());
515 xs->tail("command");
516 }
517 if (Arguments::sun_java_launcher() != NULL) {
518 xs->head("launcher"); xs->text()->print_cr("%s", Arguments::sun_java_launcher());
519 xs->tail("launcher");
520 }
521 if (Arguments::system_properties() != NULL) {
522 xs->head("properties");
523 // Print it as a java-style property list.
524 // System properties don't generally contain newlines, so don't bother with unparsing.
525 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) {
526 xs->text()->print_cr("%s=%s", p->key(), p->value());
527 }
528 xs->tail("properties");
529 }
530 xs->tail("vm_arguments");
531 // tty output per se is grouped under the <tty>...</tty> element.
532 xs->head("tty");
533 // All further non-markup text gets copied to the tty:
534 xs->_text = this; // requires friend declaration!
535 } else {
536 delete(file);
537 // and leave xtty as NULL
538 LogVMOutput = false;
539 DisplayVMOutput = true;
540 LogCompilation = false;
541 }
542 }
543
544 // finish_log() is called during normal VM shutdown. finish_log_on_error() is
545 // called by ostream_abort() after a fatal error.
546 //
547 void defaultStream::finish_log() {
548 xmlStream* xs = _outer_xmlStream;
549 xs->done("tty");
550
551 // Other log forks are appended here, at the End of Time:
552 CompileLog::finish_log(xs->out()); // write compile logging, if any, now
553
554 xs->done("hotspot_log");
555 xs->flush();
556
557 fileStream* file = _log_file;
558 _log_file = NULL;
559
560 delete _outer_xmlStream;
561 _outer_xmlStream = NULL;
562
563 file->flush();
564 delete file;
565 }
566
567 void defaultStream::finish_log_on_error(char *buf, int buflen) {
568 xmlStream* xs = _outer_xmlStream;
569
570 if (xs && xs->out()) {
571
572 xs->done_raw("tty");
573
574 // Other log forks are appended here, at the End of Time:
575 CompileLog::finish_log_on_error(xs->out(), buf, buflen); // write compile logging, if any, now
576
577 xs->done_raw("hotspot_log");
578 xs->flush();
579
580 fileStream* file = _log_file;
581 _log_file = NULL;
582 _outer_xmlStream = NULL;
583
584 if (file) {
585 file->flush();
586
587 // Can't delete or close the file because delete and fclose aren't
588 // async-safe. We are about to die, so leave it to the kernel.
589 // delete file;
590 }
591 }
592 }
593
594 intx defaultStream::hold(intx writer_id) {
595 bool has_log = has_log_file(); // check before locking
596 if (// impossible, but who knows?
597 writer_id == NO_WRITER ||
598
599 // bootstrap problem
600 tty_lock == NULL ||
601
602 // can't grab a lock or call Thread::current() if TLS isn't initialized
603 ThreadLocalStorage::thread() == NULL ||
604
605 // developer hook
606 !SerializeVMOutput ||
607
608 // VM already unhealthy
609 is_error_reported() ||
610
611 // safepoint == global lock (for VM only)
612 (SafepointSynchronize::is_synchronizing() &&
613 Thread::current()->is_VM_thread())
614 ) {
615 // do not attempt to lock unless we know the thread and the VM is healthy
616 return NO_WRITER;
617 }
618 if (_writer == writer_id) {
619 // already held, no need to re-grab the lock
620 return NO_WRITER;
621 }
622 tty_lock->lock_without_safepoint_check();
623 // got the lock
624 if (writer_id != _last_writer) {
625 if (has_log) {
626 _log_file->bol();
627 // output a hint where this output is coming from:
628 _log_file->print_cr("<writer thread='"INTX_FORMAT"'/>", writer_id);
629 }
630 _last_writer = writer_id;
631 }
632 _writer = writer_id;
633 return writer_id;
634 }
635
636 void defaultStream::release(intx holder) {
637 if (holder == NO_WRITER) {
638 // nothing to release: either a recursive lock, or we scribbled (too bad)
639 return;
640 }
641 if (_writer != holder) {
642 return; // already unlocked, perhaps via break_tty_lock_for_safepoint
643 }
644 _writer = NO_WRITER;
645 tty_lock->unlock();
646 }
647
648
649 // Yuck: jio_print does not accept char*/len.
650 static void call_jio_print(const char* s, size_t len) {
651 char buffer[O_BUFLEN+100];
652 if (len > sizeof(buffer)-1) {
653 warning("increase O_BUFLEN in ostream.cpp -- output truncated");
654 len = sizeof(buffer)-1;
655 }
656 strncpy(buffer, s, len);
657 buffer[len] = '\0';
658 jio_print(buffer);
659 }
660
661
662 void defaultStream::write(const char* s, size_t len) {
663 intx thread_id = os::current_thread_id();
664 intx holder = hold(thread_id);
665
666 if (DisplayVMOutput &&
667 (_outer_xmlStream == NULL || !_outer_xmlStream->inside_attrs())) {
668 // print to output stream. It can be redirected by a vfprintf hook
669 if (s[len] == '\0') {
670 jio_print(s);
671 } else {
672 call_jio_print(s, len);
673 }
674 }
675
676 // print to log file
677 if (has_log_file()) {
678 int nl0 = _newlines;
679 xmlTextStream::write(s, len);
680 // flush the log file too, if there were any newlines
681 if (nl0 != _newlines){
682 flush();
683 }
684 } else {
685 update_position(s, len);
686 }
687
688 release(holder);
689 }
690
691 intx ttyLocker::hold_tty() {
692 if (defaultStream::instance == NULL) return defaultStream::NO_WRITER;
693 intx thread_id = os::current_thread_id();
694 return defaultStream::instance->hold(thread_id);
695 }
696
697 void ttyLocker::release_tty(intx holder) {
698 if (holder == defaultStream::NO_WRITER) return;
699 defaultStream::instance->release(holder);
700 }
701
702 bool ttyLocker::release_tty_if_locked() {
703 intx thread_id = os::current_thread_id();
704 if (defaultStream::instance->writer() == thread_id) {
705 // release the lock and return true so callers know if was
706 // previously held.
707 release_tty(thread_id);
708 return true;
709 }
710 return false;
711 }
712
713 void ttyLocker::break_tty_lock_for_safepoint(intx holder) {
714 if (defaultStream::instance != NULL &&
715 defaultStream::instance->writer() == holder) {
716 if (xtty != NULL) {
717 xtty->print_cr("<!-- safepoint while printing -->");
718 }
719 defaultStream::instance->release(holder);
720 }
721 // (else there was no lock to break)
722 }
723
724 void ostream_init() {
725 if (defaultStream::instance == NULL) {
726 defaultStream::instance = new(ResourceObj::C_HEAP) defaultStream();
727 tty = defaultStream::instance;
728
729 // We want to ensure that time stamps in GC logs consider time 0
730 // the time when the JVM is initialized, not the first time we ask
731 // for a time stamp. So, here, we explicitly update the time stamp
732 // of tty.
733 tty->time_stamp().update_to(1);
734 }
735 }
736
737 void ostream_init_log() {
738 // For -Xloggc:<file> option - called in runtime/thread.cpp
739 // Note : this must be called AFTER ostream_init()
740
741 gclog_or_tty = tty; // default to tty
742 if (Arguments::gc_log_filename() != NULL) {
743 fileStream * gclog = new(ResourceObj::C_HEAP)
744 fileStream(Arguments::gc_log_filename());
745 if (gclog->is_open()) {
746 // now we update the time stamp of the GC log to be synced up
747 // with tty.
748 gclog->time_stamp().update_to(tty->time_stamp().ticks());
749 gclog_or_tty = gclog;
750 }
751 }
752
753 // If we haven't lazily initialized the logfile yet, do it now,
754 // to avoid the possibility of lazy initialization during a VM
755 // crash, which can affect the stability of the fatal error handler.
756 defaultStream::instance->has_log_file();
757 }
758
759 // ostream_exit() is called during normal VM exit to finish log files, flush
760 // output and free resource.
761 void ostream_exit() {
762 static bool ostream_exit_called = false;
763 if (ostream_exit_called) return;
764 ostream_exit_called = true;
765 if (gclog_or_tty != tty) {
766 delete gclog_or_tty;
767 }
768 {
769 // we temporaly disable PrintMallocFree here
770 // as otherwise it'll lead to using of almost deleted
771 // tty or defaultStream::instance in logging facility
772 // of HeapFree(), see 6391258
773 DEBUG_ONLY(FlagSetting fs(PrintMallocFree, false);)
774 if (tty != defaultStream::instance) {
775 delete tty;
776 }
777 if (defaultStream::instance != NULL) {
778 delete defaultStream::instance;
779 }
780 }
781 tty = NULL;
782 xtty = NULL;
783 gclog_or_tty = NULL;
784 defaultStream::instance = NULL;
785 }
786
787 // ostream_abort() is called by os::abort() when VM is about to die.
788 void ostream_abort() {
789 // Here we can't delete gclog_or_tty and tty, just flush their output
790 if (gclog_or_tty) gclog_or_tty->flush();
791 if (tty) tty->flush();
792
793 if (defaultStream::instance != NULL) {
794 static char buf[4096];
795 defaultStream::instance->finish_log_on_error(buf, sizeof(buf));
796 }
797 }
798
799 staticBufferStream::staticBufferStream(char* buffer, size_t buflen,
800 outputStream *outer_stream) {
801 _buffer = buffer;
802 _buflen = buflen;
803 _outer_stream = outer_stream;
804 }
805
806 void staticBufferStream::write(const char* c, size_t len) {
807 _outer_stream->print_raw(c, (int)len);
808 }
809
810 void staticBufferStream::flush() {
811 _outer_stream->flush();
812 }
813
814 void staticBufferStream::print(const char* format, ...) {
815 va_list ap;
816 va_start(ap, format);
817 size_t len;
818 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, false, len);
819 write(str, len);
820 va_end(ap);
821 }
822
823 void staticBufferStream::print_cr(const char* format, ...) {
824 va_list ap;
825 va_start(ap, format);
826 size_t len;
827 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, true, len);
828 write(str, len);
829 va_end(ap);
830 }
831
832 void staticBufferStream::vprint(const char *format, va_list argptr) {
833 size_t len;
834 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, false, len);
835 write(str, len);
836 }
837
838 void staticBufferStream::vprint_cr(const char* format, va_list argptr) {
839 size_t len;
840 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, true, len);
841 write(str, len);
842 }
843
844 bufferedStream::bufferedStream(size_t initial_size, size_t bufmax) : outputStream() {
845 buffer_length = initial_size;
846 buffer = NEW_C_HEAP_ARRAY(char, buffer_length);
847 buffer_pos = 0;
848 buffer_fixed = false;
849 buffer_max = bufmax;
850 }
851
852 bufferedStream::bufferedStream(char* fixed_buffer, size_t fixed_buffer_size, size_t bufmax) : outputStream() {
853 buffer_length = fixed_buffer_size;
854 buffer = fixed_buffer;
855 buffer_pos = 0;
856 buffer_fixed = true;
857 buffer_max = bufmax;
858 }
859
860 void bufferedStream::write(const char* s, size_t len) {
861
862 if(buffer_pos + len > buffer_max) {
863 flush();
864 }
865
866 size_t end = buffer_pos + len;
867 if (end >= buffer_length) {
868 if (buffer_fixed) {
869 // if buffer cannot resize, silently truncate
870 len = buffer_length - buffer_pos - 1;
871 } else {
872 // For small overruns, double the buffer. For larger ones,
873 // increase to the requested size.
874 if (end < buffer_length * 2) {
875 end = buffer_length * 2;
876 }
877 buffer = REALLOC_C_HEAP_ARRAY(char, buffer, end);
878 buffer_length = end;
879 }
880 }
881 memcpy(buffer + buffer_pos, s, len);
882 buffer_pos += len;
883 update_position(s, len);
884 }
885
886 char* bufferedStream::as_string() {
887 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1);
888 strncpy(copy, buffer, buffer_pos);
889 copy[buffer_pos] = 0; // terminating null
890 return copy;
891 }
892
893 bufferedStream::~bufferedStream() {
894 if (!buffer_fixed) {
895 FREE_C_HEAP_ARRAY(char, buffer);
896 }
897 }
898
899 #ifndef PRODUCT
900
901 #if defined(SOLARIS) || defined(LINUX)
902 #include <sys/types.h>
903 #include <sys/socket.h>
904 #include <netinet/in.h>
905 #include <arpa/inet.h>
906 #endif
907
908 // Network access
909 networkStream::networkStream() : bufferedStream(1024*10, 1024*10) {
910
911 _socket = -1;
912
913 int result = os::socket(AF_INET, SOCK_STREAM, 0);
914 if (result <= 0) {
915 assert(false, "Socket could not be created!");
916 } else {
917 _socket = result;
918 }
919 }
920
921 int networkStream::read(char *buf, size_t len) {
922 return os::recv(_socket, buf, (int)len, 0);
923 }
924
925 void networkStream::flush() {
926 if (size() != 0) {
927 int result = os::raw_send(_socket, (char *)base(), (int)size(), 0);
928 assert(result != -1, "connection error");
929 assert(result == (int)size(), "didn't send enough data");
930 }
931 reset();
932 }
933
934 networkStream::~networkStream() {
935 close();
936 }
937
938 void networkStream::close() {
939 if (_socket != -1) {
940 flush();
941 os::socket_close(_socket);
942 _socket = -1;
943 }
944 }
945
946 bool networkStream::connect(const char *ip, short port) {
947
948 struct sockaddr_in server;
949 server.sin_family = AF_INET;
950 server.sin_port = htons(port);
951
952 server.sin_addr.s_addr = inet_addr(ip);
953 if (server.sin_addr.s_addr == (uint32_t)-1) {
954 struct hostent* host = os::get_host_by_name((char*)ip);
955 if (host != NULL) {
956 memcpy(&server.sin_addr, host->h_addr_list[0], host->h_length);
957 } else {
958 return false;
959 }
960 }
961
962
963 int result = os::connect(_socket, (struct sockaddr*)&server, sizeof(struct sockaddr_in));
964 return (result >= 0);
965 }
966
967 #endif