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comparison src/share/vm/utilities/ostream.cpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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1 /*
2 * Copyright 1997-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 # include "incls/_precompiled.incl"
26 # include "incls/_ostream.cpp.incl"
27
28 extern "C" void jio_print(const char* s); // Declarationtion of jvm method
29
30 outputStream::outputStream(int width) {
31 _width = width;
32 _position = 0;
33 _newlines = 0;
34 _precount = 0;
35 _indentation = 0;
36 }
37
38 outputStream::outputStream(int width, bool has_time_stamps) {
39 _width = width;
40 _position = 0;
41 _newlines = 0;
42 _precount = 0;
43 _indentation = 0;
44 if (has_time_stamps) _stamp.update();
45 }
46
47 void outputStream::update_position(const char* s, size_t len) {
48 for (size_t i = 0; i < len; i++) {
49 char ch = s[i];
50 if (ch == '\n') {
51 _newlines += 1;
52 _precount += _position + 1;
53 _position = 0;
54 } else if (ch == '\t') {
55 _position += 8;
56 _precount -= 7; // invariant: _precount + _position == total count
57 } else {
58 _position += 1;
59 }
60 }
61 }
62
63 // Execute a vsprintf, using the given buffer if necessary.
64 // Return a pointer to the formatted string.
65 const char* outputStream::do_vsnprintf(char* buffer, size_t buflen,
66 const char* format, va_list ap,
67 bool add_cr,
68 size_t& result_len) {
69 const char* result;
70 if (add_cr) buflen--;
71 if (!strchr(format, '%')) {
72 // constant format string
73 result = format;
74 result_len = strlen(result);
75 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate
76 } else if (format[0] == '%' && format[1] == 's' && format[2] == '\0') {
77 // trivial copy-through format string
78 result = va_arg(ap, const char*);
79 result_len = strlen(result);
80 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate
81 } else if (vsnprintf(buffer, buflen, format, ap) >= 0) {
82 result = buffer;
83 result_len = strlen(result);
84 } else {
85 DEBUG_ONLY(warning("increase O_BUFLEN in ostream.hpp -- output truncated");)
86 result = buffer;
87 result_len = buflen - 1;
88 buffer[result_len] = 0;
89 }
90 if (add_cr) {
91 if (result != buffer) {
92 strncpy(buffer, result, buflen);
93 result = buffer;
94 }
95 buffer[result_len++] = '\n';
96 buffer[result_len] = 0;
97 }
98 return result;
99 }
100
101 void outputStream::print(const char* format, ...) {
102 char buffer[O_BUFLEN];
103 va_list ap;
104 va_start(ap, format);
105 size_t len;
106 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, false, len);
107 write(str, len);
108 va_end(ap);
109 }
110
111 void outputStream::print_cr(const char* format, ...) {
112 char buffer[O_BUFLEN];
113 va_list ap;
114 va_start(ap, format);
115 size_t len;
116 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, true, len);
117 write(str, len);
118 va_end(ap);
119 }
120
121 void outputStream::vprint(const char *format, va_list argptr) {
122 char buffer[O_BUFLEN];
123 size_t len;
124 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, false, len);
125 write(str, len);
126 }
127
128 void outputStream::vprint_cr(const char* format, va_list argptr) {
129 char buffer[O_BUFLEN];
130 size_t len;
131 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, true, len);
132 write(str, len);
133 }
134
135 void outputStream::fill_to(int col) {
136 while (position() < col) sp();
137 }
138
139 void outputStream::put(char ch) {
140 assert(ch != 0, "please fix call site");
141 char buf[] = { ch, '\0' };
142 write(buf, 1);
143 }
144
145 void outputStream::sp() {
146 this->write(" ", 1);
147 }
148
149 void outputStream::cr() {
150 this->write("\n", 1);
151 }
152
153 void outputStream::stamp() {
154 if (! _stamp.is_updated()) {
155 _stamp.update(); // start at 0 on first call to stamp()
156 }
157
158 // outputStream::stamp() may get called by ostream_abort(), use snprintf
159 // to avoid allocating large stack buffer in print().
160 char buf[40];
161 jio_snprintf(buf, sizeof(buf), "%.3f", _stamp.seconds());
162 print_raw(buf);
163 }
164
165 void outputStream::date_stamp(bool guard,
166 const char* prefix,
167 const char* suffix) {
168 if (!guard) {
169 return;
170 }
171 print_raw(prefix);
172 static const char error_time[] = "yyyy-mm-ddThh:mm:ss.mmm+zzzz";
173 static const int buffer_length = 32;
174 char buffer[buffer_length];
175 const char* iso8601_result = os::iso8601_time(buffer, buffer_length);
176 if (iso8601_result != NULL) {
177 print_raw(buffer);
178 } else {
179 print_raw(error_time);
180 }
181 print_raw(suffix);
182 return;
183 }
184
185 void outputStream::indent() {
186 while (_position < _indentation) sp();
187 }
188
189 void outputStream::print_jlong(jlong value) {
190 // N.B. Same as INT64_FORMAT
191 print(os::jlong_format_specifier(), value);
192 }
193
194 void outputStream::print_julong(julong value) {
195 // N.B. Same as UINT64_FORMAT
196 print(os::julong_format_specifier(), value);
197 }
198
199 stringStream::stringStream(size_t initial_size) : outputStream() {
200 buffer_length = initial_size;
201 buffer = NEW_RESOURCE_ARRAY(char, buffer_length);
202 buffer_pos = 0;
203 buffer_fixed = false;
204 }
205
206 // useful for output to fixed chunks of memory, such as performance counters
207 stringStream::stringStream(char* fixed_buffer, size_t fixed_buffer_size) : outputStream() {
208 buffer_length = fixed_buffer_size;
209 buffer = fixed_buffer;
210 buffer_pos = 0;
211 buffer_fixed = true;
212 }
213
214 void stringStream::write(const char* s, size_t len) {
215 size_t write_len = len; // number of non-null bytes to write
216 size_t end = buffer_pos + len + 1; // position after write and final '\0'
217 if (end > buffer_length) {
218 if (buffer_fixed) {
219 // if buffer cannot resize, silently truncate
220 end = buffer_length;
221 write_len = end - buffer_pos - 1; // leave room for the final '\0'
222 } else {
223 // For small overruns, double the buffer. For larger ones,
224 // increase to the requested size.
225 if (end < buffer_length * 2) {
226 end = buffer_length * 2;
227 }
228 char* oldbuf = buffer;
229 buffer = NEW_RESOURCE_ARRAY(char, end);
230 strncpy(buffer, oldbuf, buffer_pos);
231 buffer_length = end;
232 }
233 }
234 // invariant: buffer is always null-terminated
235 guarantee(buffer_pos + write_len + 1 <= buffer_length, "stringStream oob");
236 buffer[buffer_pos + write_len] = 0;
237 strncpy(buffer + buffer_pos, s, write_len);
238 buffer_pos += write_len;
239
240 // Note that the following does not depend on write_len.
241 // This means that position and count get updated
242 // even when overflow occurs.
243 update_position(s, len);
244 }
245
246 char* stringStream::as_string() {
247 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1);
248 strncpy(copy, buffer, buffer_pos);
249 copy[buffer_pos] = 0; // terminating null
250 return copy;
251 }
252
253 stringStream::~stringStream() {}
254
255 xmlStream* xtty;
256 outputStream* tty;
257 outputStream* gclog_or_tty;
258 extern Mutex* tty_lock;
259
260 fileStream::fileStream(const char* file_name) {
261 _file = fopen(file_name, "w");
262 _need_close = true;
263 }
264
265 void fileStream::write(const char* s, size_t len) {
266 if (_file != NULL) fwrite(s, 1, len, _file);
267 update_position(s, len);
268 }
269
270 fileStream::~fileStream() {
271 if (_file != NULL) {
272 if (_need_close) fclose(_file);
273 _file = NULL;
274 }
275 }
276
277 void fileStream::flush() {
278 fflush(_file);
279 }
280
281 fdStream::fdStream(const char* file_name) {
282 _fd = open(file_name, O_WRONLY | O_CREAT | O_TRUNC, 0666);
283 _need_close = true;
284 }
285
286 fdStream::~fdStream() {
287 if (_fd != -1) {
288 if (_need_close) close(_fd);
289 _fd = -1;
290 }
291 }
292
293 void fdStream::write(const char* s, size_t len) {
294 if (_fd != -1) ::write(_fd, s, (int)len);
295 update_position(s, len);
296 }
297
298 defaultStream* defaultStream::instance = NULL;
299 int defaultStream::_output_fd = 1;
300 int defaultStream::_error_fd = 2;
301 FILE* defaultStream::_output_stream = stdout;
302 FILE* defaultStream::_error_stream = stderr;
303
304 #define LOG_MAJOR_VERSION 160
305 #define LOG_MINOR_VERSION 1
306
307 void defaultStream::init() {
308 _inited = true;
309 if (LogVMOutput || LogCompilation) {
310 init_log();
311 }
312 }
313
314 bool defaultStream::has_log_file() {
315 // lazily create log file (at startup, LogVMOutput is false even
316 // if +LogVMOutput is used, because the flags haven't been parsed yet)
317 // For safer printing during fatal error handling, do not init logfile
318 // if a VM error has been reported.
319 if (!_inited && !is_error_reported()) init();
320 return _log_file != NULL;
321 }
322
323 static const char* make_log_name(const char* log_name, const char* force_directory, char* buf) {
324 const char* basename = log_name;
325 char file_sep = os::file_separator()[0];
326 const char* cp;
327 for (cp = log_name; *cp != '\0'; cp++) {
328 if (*cp == '/' || *cp == file_sep) {
329 basename = cp+1;
330 }
331 }
332 const char* nametail = log_name;
333
334 strcpy(buf, "");
335 if (force_directory != NULL) {
336 strcat(buf, force_directory);
337 strcat(buf, os::file_separator());
338 nametail = basename; // completely skip directory prefix
339 }
340
341 const char* star = strchr(basename, '*');
342 int star_pos = (star == NULL) ? -1 : (star - nametail);
343
344 if (star_pos >= 0) {
345 // convert foo*bar.log to foo123bar.log
346 int buf_pos = (int) strlen(buf);
347 strncpy(&buf[buf_pos], nametail, star_pos);
348 sprintf(&buf[buf_pos + star_pos], "%u", os::current_process_id());
349 nametail += star_pos + 1; // skip prefix and star
350 }
351
352 strcat(buf, nametail); // append rest of name, or all of name
353 return buf;
354 }
355
356 void defaultStream::init_log() {
357 // %%% Need a MutexLocker?
358 const char* log_name = LogFile != NULL ? LogFile : "hotspot.log";
359 char buf[O_BUFLEN*2];
360 const char* try_name = make_log_name(log_name, NULL, buf);
361 fileStream* file = new(ResourceObj::C_HEAP) fileStream(try_name);
362 if (!file->is_open()) {
363 // Try again to open the file.
364 char warnbuf[O_BUFLEN*2];
365 sprintf(warnbuf, "Warning: Cannot open log file: %s\n", try_name);
366 // Note: This feature is for maintainer use only. No need for L10N.
367 jio_print(warnbuf);
368 try_name = make_log_name("hs_pid*.log", os::get_temp_directory(), buf);
369 sprintf(warnbuf, "Warning: Forcing option -XX:LogFile=%s\n", try_name);
370 jio_print(warnbuf);
371 delete file;
372 file = new(ResourceObj::C_HEAP) fileStream(try_name);
373 }
374 if (file->is_open()) {
375 _log_file = file;
376 xmlStream* xs = new(ResourceObj::C_HEAP) xmlStream(file);
377 _outer_xmlStream = xs;
378 if (this == tty) xtty = xs;
379 // Write XML header.
380 xs->print_cr("<?xml version='1.0' encoding='UTF-8'?>");
381 // (For now, don't bother to issue a DTD for this private format.)
382 jlong time_ms = os::javaTimeMillis() - tty->time_stamp().milliseconds();
383 // %%% Should be: jlong time_ms = os::start_time_milliseconds(), if
384 // we ever get round to introduce that method on the os class
385 xs->head("hotspot_log version='%d %d'"
386 " process='%d' time_ms='"INT64_FORMAT"'",
387 LOG_MAJOR_VERSION, LOG_MINOR_VERSION,
388 os::current_process_id(), time_ms);
389 // Write VM version header immediately.
390 xs->head("vm_version");
391 xs->head("name"); xs->text("%s", VM_Version::vm_name()); xs->cr();
392 xs->tail("name");
393 xs->head("release"); xs->text("%s", VM_Version::vm_release()); xs->cr();
394 xs->tail("release");
395 xs->head("info"); xs->text("%s", VM_Version::internal_vm_info_string()); xs->cr();
396 xs->tail("info");
397 xs->tail("vm_version");
398 // Record information about the command-line invocation.
399 xs->head("vm_arguments"); // Cf. Arguments::print_on()
400 if (Arguments::num_jvm_flags() > 0) {
401 xs->head("flags");
402 Arguments::print_jvm_flags_on(xs->text());
403 xs->tail("flags");
404 }
405 if (Arguments::num_jvm_args() > 0) {
406 xs->head("args");
407 Arguments::print_jvm_args_on(xs->text());
408 xs->tail("args");
409 }
410 if (Arguments::java_command() != NULL) {
411 xs->head("command"); xs->text()->print_cr("%s", Arguments::java_command());
412 xs->tail("command");
413 }
414 if (Arguments::sun_java_launcher() != NULL) {
415 xs->head("launcher"); xs->text()->print_cr("%s", Arguments::sun_java_launcher());
416 xs->tail("launcher");
417 }
418 if (Arguments::system_properties() != NULL) {
419 xs->head("properties");
420 // Print it as a java-style property list.
421 // System properties don't generally contain newlines, so don't bother with unparsing.
422 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) {
423 xs->text()->print_cr("%s=%s", p->key(), p->value());
424 }
425 xs->tail("properties");
426 }
427 xs->tail("vm_arguments");
428 // tty output per se is grouped under the <tty>...</tty> element.
429 xs->head("tty");
430 // All further non-markup text gets copied to the tty:
431 xs->_text = this; // requires friend declaration!
432 } else {
433 delete(file);
434 // and leave xtty as NULL
435 LogVMOutput = false;
436 DisplayVMOutput = true;
437 LogCompilation = false;
438 }
439 }
440
441 // finish_log() is called during normal VM shutdown. finish_log_on_error() is
442 // called by ostream_abort() after a fatal error.
443 //
444 void defaultStream::finish_log() {
445 xmlStream* xs = _outer_xmlStream;
446 xs->done("tty");
447
448 // Other log forks are appended here, at the End of Time:
449 CompileLog::finish_log(xs->out()); // write compile logging, if any, now
450
451 xs->done("hotspot_log");
452 xs->flush();
453
454 fileStream* file = _log_file;
455 _log_file = NULL;
456
457 delete _outer_xmlStream;
458 _outer_xmlStream = NULL;
459
460 file->flush();
461 delete file;
462 }
463
464 void defaultStream::finish_log_on_error(char *buf, int buflen) {
465 xmlStream* xs = _outer_xmlStream;
466
467 if (xs && xs->out()) {
468
469 xs->done_raw("tty");
470
471 // Other log forks are appended here, at the End of Time:
472 CompileLog::finish_log_on_error(xs->out(), buf, buflen); // write compile logging, if any, now
473
474 xs->done_raw("hotspot_log");
475 xs->flush();
476
477 fileStream* file = _log_file;
478 _log_file = NULL;
479 _outer_xmlStream = NULL;
480
481 if (file) {
482 file->flush();
483
484 // Can't delete or close the file because delete and fclose aren't
485 // async-safe. We are about to die, so leave it to the kernel.
486 // delete file;
487 }
488 }
489 }
490
491 intx defaultStream::hold(intx writer_id) {
492 bool has_log = has_log_file(); // check before locking
493 if (// impossible, but who knows?
494 writer_id == NO_WRITER ||
495
496 // bootstrap problem
497 tty_lock == NULL ||
498
499 // can't grab a lock or call Thread::current() if TLS isn't initialized
500 ThreadLocalStorage::thread() == NULL ||
501
502 // developer hook
503 !SerializeVMOutput ||
504
505 // VM already unhealthy
506 is_error_reported() ||
507
508 // safepoint == global lock (for VM only)
509 (SafepointSynchronize::is_synchronizing() &&
510 Thread::current()->is_VM_thread())
511 ) {
512 // do not attempt to lock unless we know the thread and the VM is healthy
513 return NO_WRITER;
514 }
515 if (_writer == writer_id) {
516 // already held, no need to re-grab the lock
517 return NO_WRITER;
518 }
519 tty_lock->lock_without_safepoint_check();
520 // got the lock
521 if (writer_id != _last_writer) {
522 if (has_log) {
523 _log_file->bol();
524 // output a hint where this output is coming from:
525 _log_file->print_cr("<writer thread='"INTX_FORMAT"'/>", writer_id);
526 }
527 _last_writer = writer_id;
528 }
529 _writer = writer_id;
530 return writer_id;
531 }
532
533 void defaultStream::release(intx holder) {
534 if (holder == NO_WRITER) {
535 // nothing to release: either a recursive lock, or we scribbled (too bad)
536 return;
537 }
538 if (_writer != holder) {
539 return; // already unlocked, perhaps via break_tty_lock_for_safepoint
540 }
541 _writer = NO_WRITER;
542 tty_lock->unlock();
543 }
544
545
546 // Yuck: jio_print does not accept char*/len.
547 static void call_jio_print(const char* s, size_t len) {
548 char buffer[O_BUFLEN+100];
549 if (len > sizeof(buffer)-1) {
550 warning("increase O_BUFLEN in ostream.cpp -- output truncated");
551 len = sizeof(buffer)-1;
552 }
553 strncpy(buffer, s, len);
554 buffer[len] = '\0';
555 jio_print(buffer);
556 }
557
558
559 void defaultStream::write(const char* s, size_t len) {
560 intx thread_id = os::current_thread_id();
561 intx holder = hold(thread_id);
562
563 if (DisplayVMOutput &&
564 (_outer_xmlStream == NULL || !_outer_xmlStream->inside_attrs())) {
565 // print to output stream. It can be redirected by a vfprintf hook
566 if (s[len] == '\0') {
567 jio_print(s);
568 } else {
569 call_jio_print(s, len);
570 }
571 }
572
573 // print to log file
574 if (has_log_file()) {
575 int nl0 = _newlines;
576 xmlTextStream::write(s, len);
577 // flush the log file too, if there were any newlines
578 if (nl0 != _newlines){
579 flush();
580 }
581 } else {
582 update_position(s, len);
583 }
584
585 release(holder);
586 }
587
588 intx ttyLocker::hold_tty() {
589 if (defaultStream::instance == NULL) return defaultStream::NO_WRITER;
590 intx thread_id = os::current_thread_id();
591 return defaultStream::instance->hold(thread_id);
592 }
593
594 void ttyLocker::release_tty(intx holder) {
595 if (holder == defaultStream::NO_WRITER) return;
596 defaultStream::instance->release(holder);
597 }
598
599 void ttyLocker::break_tty_lock_for_safepoint(intx holder) {
600 if (defaultStream::instance != NULL &&
601 defaultStream::instance->writer() == holder) {
602 if (xtty != NULL) {
603 xtty->print_cr("<!-- safepoint while printing -->");
604 }
605 defaultStream::instance->release(holder);
606 }
607 // (else there was no lock to break)
608 }
609
610 void ostream_init() {
611 if (defaultStream::instance == NULL) {
612 defaultStream::instance = new(ResourceObj::C_HEAP) defaultStream();
613 tty = defaultStream::instance;
614
615 // We want to ensure that time stamps in GC logs consider time 0
616 // the time when the JVM is initialized, not the first time we ask
617 // for a time stamp. So, here, we explicitly update the time stamp
618 // of tty.
619 tty->time_stamp().update_to(1);
620 }
621 }
622
623 void ostream_init_log() {
624 // For -Xloggc:<file> option - called in runtime/thread.cpp
625 // Note : this must be called AFTER ostream_init()
626
627 gclog_or_tty = tty; // default to tty
628 if (Arguments::gc_log_filename() != NULL) {
629 fileStream * gclog = new(ResourceObj::C_HEAP)
630 fileStream(Arguments::gc_log_filename());
631 if (gclog->is_open()) {
632 // now we update the time stamp of the GC log to be synced up
633 // with tty.
634 gclog->time_stamp().update_to(tty->time_stamp().ticks());
635 gclog_or_tty = gclog;
636 }
637 }
638
639 // If we haven't lazily initialized the logfile yet, do it now,
640 // to avoid the possibility of lazy initialization during a VM
641 // crash, which can affect the stability of the fatal error handler.
642 defaultStream::instance->has_log_file();
643 }
644
645 // ostream_exit() is called during normal VM exit to finish log files, flush
646 // output and free resource.
647 void ostream_exit() {
648 static bool ostream_exit_called = false;
649 if (ostream_exit_called) return;
650 ostream_exit_called = true;
651 if (gclog_or_tty != tty) {
652 delete gclog_or_tty;
653 }
654 {
655 // we temporaly disable PrintMallocFree here
656 // as otherwise it'll lead to using of almost deleted
657 // tty or defaultStream::instance in logging facility
658 // of HeapFree(), see 6391258
659 DEBUG_ONLY(FlagSetting fs(PrintMallocFree, false);)
660 if (tty != defaultStream::instance) {
661 delete tty;
662 }
663 if (defaultStream::instance != NULL) {
664 delete defaultStream::instance;
665 }
666 }
667 tty = NULL;
668 xtty = NULL;
669 gclog_or_tty = NULL;
670 defaultStream::instance = NULL;
671 }
672
673 // ostream_abort() is called by os::abort() when VM is about to die.
674 void ostream_abort() {
675 // Here we can't delete gclog_or_tty and tty, just flush their output
676 if (gclog_or_tty) gclog_or_tty->flush();
677 if (tty) tty->flush();
678
679 if (defaultStream::instance != NULL) {
680 static char buf[4096];
681 defaultStream::instance->finish_log_on_error(buf, sizeof(buf));
682 }
683 }
684
685 staticBufferStream::staticBufferStream(char* buffer, size_t buflen,
686 outputStream *outer_stream) {
687 _buffer = buffer;
688 _buflen = buflen;
689 _outer_stream = outer_stream;
690 }
691
692 void staticBufferStream::write(const char* c, size_t len) {
693 _outer_stream->print_raw(c, (int)len);
694 }
695
696 void staticBufferStream::flush() {
697 _outer_stream->flush();
698 }
699
700 void staticBufferStream::print(const char* format, ...) {
701 va_list ap;
702 va_start(ap, format);
703 size_t len;
704 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, false, len);
705 write(str, len);
706 va_end(ap);
707 }
708
709 void staticBufferStream::print_cr(const char* format, ...) {
710 va_list ap;
711 va_start(ap, format);
712 size_t len;
713 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, true, len);
714 write(str, len);
715 va_end(ap);
716 }
717
718 void staticBufferStream::vprint(const char *format, va_list argptr) {
719 size_t len;
720 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, false, len);
721 write(str, len);
722 }
723
724 void staticBufferStream::vprint_cr(const char* format, va_list argptr) {
725 size_t len;
726 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, true, len);
727 write(str, len);
728 }
729
730 bufferedStream::bufferedStream(size_t initial_size) : outputStream() {
731 buffer_length = initial_size;
732 buffer = NEW_C_HEAP_ARRAY(char, buffer_length);
733 buffer_pos = 0;
734 buffer_fixed = false;
735 }
736
737 bufferedStream::bufferedStream(char* fixed_buffer, size_t fixed_buffer_size) : outputStream() {
738 buffer_length = fixed_buffer_size;
739 buffer = fixed_buffer;
740 buffer_pos = 0;
741 buffer_fixed = true;
742 }
743
744 void bufferedStream::write(const char* s, size_t len) {
745 size_t end = buffer_pos + len;
746 if (end >= buffer_length) {
747 if (buffer_fixed) {
748 // if buffer cannot resize, silently truncate
749 len = buffer_length - buffer_pos - 1;
750 } else {
751 // For small overruns, double the buffer. For larger ones,
752 // increase to the requested size.
753 if (end < buffer_length * 2) {
754 end = buffer_length * 2;
755 }
756 buffer = REALLOC_C_HEAP_ARRAY(char, buffer, end);
757 buffer_length = end;
758 }
759 }
760 memcpy(buffer + buffer_pos, s, len);
761 buffer_pos += len;
762 update_position(s, len);
763 }
764
765 char* bufferedStream::as_string() {
766 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1);
767 strncpy(copy, buffer, buffer_pos);
768 copy[buffer_pos] = 0; // terminating null
769 return copy;
770 }
771
772 bufferedStream::~bufferedStream() {
773 if (!buffer_fixed) {
774 FREE_C_HEAP_ARRAY(char, buffer);
775 }
776 }
777
778 #ifndef PRODUCT
779
780 #if defined(SOLARIS) || defined(LINUX)
781 #include <sys/types.h>
782 #include <sys/socket.h>
783 #include <netinet/in.h>
784 #include <arpa/inet.h>
785 #endif
786
787 // Network access
788 networkStream::networkStream() {
789
790 _socket = -1;
791
792 hpi::initialize_socket_library();
793
794 int result = hpi::socket(AF_INET, SOCK_STREAM, 0);
795 if (result <= 0) {
796 assert(false, "Socket could not be created!");
797 } else {
798 _socket = result;
799 }
800 }
801
802 int networkStream::read(char *buf, size_t len) {
803 return hpi::recv(_socket, buf, (int)len, 0);
804 }
805
806 void networkStream::flush() {
807 if (size() != 0) {
808 hpi::send(_socket, (char *)base(), (int)size(), 0);
809 }
810 reset();
811 }
812
813 networkStream::~networkStream() {
814 close();
815 }
816
817 void networkStream::close() {
818 if (_socket != -1) {
819 flush();
820 hpi::socket_close(_socket);
821 _socket = -1;
822 }
823 }
824
825 bool networkStream::connect(const char *ip, short port) {
826
827 struct sockaddr_in server;
828 server.sin_family = AF_INET;
829 server.sin_port = htons(port);
830
831 server.sin_addr.s_addr = inet_addr(ip);
832 if (server.sin_addr.s_addr == (unsigned long)-1) {
833 #ifdef _WINDOWS
834 struct hostent* host = hpi::get_host_by_name((char*)ip);
835 #else
836 struct hostent* host = gethostbyname(ip);
837 #endif
838 if (host != NULL) {
839 memcpy(&server.sin_addr, host->h_addr_list[0], host->h_length);
840 } else {
841 return false;
842 }
843 }
844
845
846 int result = hpi::connect(_socket, (struct sockaddr*)&server, sizeof(struct sockaddr_in));
847 return (result >= 0);
848 }
849
850 #endif