Wed, 01 Dec 2010 18:26:32 -0500
6348631: remove the use of the HPI library from Hotspot
Summary: move functions from hpi library to hotspot, communicate with licensees and open source community, check jdk for dependency, file CCC request
Reviewed-by: coleenp, acorn, dsamersoff
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 */
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
43 extern "C" void jio_print(const char* s); // Declarationtion of jvm method
45 outputStream::outputStream(int width) {
46 _width = width;
47 _position = 0;
48 _newlines = 0;
49 _precount = 0;
50 _indentation = 0;
51 }
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 }
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 }
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 }
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 }
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 }
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 }
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 }
151 void outputStream::fill_to(int col) {
152 int need_fill = col - position();
153 sp(need_fill);
154 }
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 }
165 void outputStream::put(char ch) {
166 assert(ch != 0, "please fix call site");
167 char buf[] = { ch, '\0' };
168 write(buf, 1);
169 }
171 #define SP_USE_TABS false
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 }
190 void outputStream::cr() {
191 this->write("\n", 1);
192 }
194 void outputStream::stamp() {
195 if (! _stamp.is_updated()) {
196 _stamp.update(); // start at 0 on first call to stamp()
197 }
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 }
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 }
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 }
237 void outputStream::indent() {
238 while (_position < _indentation) sp();
239 }
241 void outputStream::print_jlong(jlong value) {
242 // N.B. Same as INT64_FORMAT
243 print(os::jlong_format_specifier(), value);
244 }
246 void outputStream::print_julong(julong value) {
247 // N.B. Same as UINT64_FORMAT
248 print(os::julong_format_specifier(), value);
249 }
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 }
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 }
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;
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 }
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 }
305 stringStream::~stringStream() {}
307 xmlStream* xtty;
308 outputStream* tty;
309 outputStream* gclog_or_tty;
310 extern Mutex* tty_lock;
312 fileStream::fileStream(const char* file_name) {
313 _file = fopen(file_name, "w");
314 _need_close = true;
315 }
317 void fileStream::write(const char* s, size_t len) {
318 if (_file != NULL) {
319 // Make an unused local variable to avoid warning from gcc 4.x compiler.
320 size_t count = fwrite(s, 1, len, _file);
321 }
322 update_position(s, len);
323 }
325 fileStream::~fileStream() {
326 if (_file != NULL) {
327 if (_need_close) fclose(_file);
328 _file = NULL;
329 }
330 }
332 void fileStream::flush() {
333 fflush(_file);
334 }
336 fdStream::fdStream(const char* file_name) {
337 _fd = open(file_name, O_WRONLY | O_CREAT | O_TRUNC, 0666);
338 _need_close = true;
339 }
341 fdStream::~fdStream() {
342 if (_fd != -1) {
343 if (_need_close) close(_fd);
344 _fd = -1;
345 }
346 }
348 void fdStream::write(const char* s, size_t len) {
349 if (_fd != -1) {
350 // Make an unused local variable to avoid warning from gcc 4.x compiler.
351 size_t count = ::write(_fd, s, (int)len);
352 }
353 update_position(s, len);
354 }
356 defaultStream* defaultStream::instance = NULL;
357 int defaultStream::_output_fd = 1;
358 int defaultStream::_error_fd = 2;
359 FILE* defaultStream::_output_stream = stdout;
360 FILE* defaultStream::_error_stream = stderr;
362 #define LOG_MAJOR_VERSION 160
363 #define LOG_MINOR_VERSION 1
365 void defaultStream::init() {
366 _inited = true;
367 if (LogVMOutput || LogCompilation) {
368 init_log();
369 }
370 }
372 bool defaultStream::has_log_file() {
373 // lazily create log file (at startup, LogVMOutput is false even
374 // if +LogVMOutput is used, because the flags haven't been parsed yet)
375 // For safer printing during fatal error handling, do not init logfile
376 // if a VM error has been reported.
377 if (!_inited && !is_error_reported()) init();
378 return _log_file != NULL;
379 }
381 static const char* make_log_name(const char* log_name, const char* force_directory) {
382 const char* basename = log_name;
383 char file_sep = os::file_separator()[0];
384 const char* cp;
385 for (cp = log_name; *cp != '\0'; cp++) {
386 if (*cp == '/' || *cp == file_sep) {
387 basename = cp+1;
388 }
389 }
390 const char* nametail = log_name;
392 // Compute buffer length
393 size_t buffer_length;
394 if (force_directory != NULL) {
395 buffer_length = strlen(force_directory) + strlen(os::file_separator()) +
396 strlen(basename) + 1;
397 } else {
398 buffer_length = strlen(log_name) + 1;
399 }
401 const char* star = strchr(basename, '*');
402 int star_pos = (star == NULL) ? -1 : (star - nametail);
404 char pid[32];
405 if (star_pos >= 0) {
406 jio_snprintf(pid, sizeof(pid), "%u", os::current_process_id());
407 buffer_length += strlen(pid);
408 }
410 // Create big enough buffer.
411 char *buf = NEW_C_HEAP_ARRAY(char, buffer_length);
413 strcpy(buf, "");
414 if (force_directory != NULL) {
415 strcat(buf, force_directory);
416 strcat(buf, os::file_separator());
417 nametail = basename; // completely skip directory prefix
418 }
420 if (star_pos >= 0) {
421 // convert foo*bar.log to foo123bar.log
422 int buf_pos = (int) strlen(buf);
423 strncpy(&buf[buf_pos], nametail, star_pos);
424 strcpy(&buf[buf_pos + star_pos], pid);
425 nametail += star_pos + 1; // skip prefix and star
426 }
428 strcat(buf, nametail); // append rest of name, or all of name
429 return buf;
430 }
432 void defaultStream::init_log() {
433 // %%% Need a MutexLocker?
434 const char* log_name = LogFile != NULL ? LogFile : "hotspot.log";
435 const char* try_name = make_log_name(log_name, NULL);
436 fileStream* file = new(ResourceObj::C_HEAP) fileStream(try_name);
437 if (!file->is_open()) {
438 // Try again to open the file.
439 char warnbuf[O_BUFLEN*2];
440 jio_snprintf(warnbuf, sizeof(warnbuf),
441 "Warning: Cannot open log file: %s\n", try_name);
442 // Note: This feature is for maintainer use only. No need for L10N.
443 jio_print(warnbuf);
444 FREE_C_HEAP_ARRAY(char, try_name);
445 try_name = make_log_name("hs_pid*.log", os::get_temp_directory());
446 jio_snprintf(warnbuf, sizeof(warnbuf),
447 "Warning: Forcing option -XX:LogFile=%s\n", try_name);
448 jio_print(warnbuf);
449 delete file;
450 file = new(ResourceObj::C_HEAP) fileStream(try_name);
451 FREE_C_HEAP_ARRAY(char, try_name);
452 }
453 if (file->is_open()) {
454 _log_file = file;
455 xmlStream* xs = new(ResourceObj::C_HEAP) xmlStream(file);
456 _outer_xmlStream = xs;
457 if (this == tty) xtty = xs;
458 // Write XML header.
459 xs->print_cr("<?xml version='1.0' encoding='UTF-8'?>");
460 // (For now, don't bother to issue a DTD for this private format.)
461 jlong time_ms = os::javaTimeMillis() - tty->time_stamp().milliseconds();
462 // %%% Should be: jlong time_ms = os::start_time_milliseconds(), if
463 // we ever get round to introduce that method on the os class
464 xs->head("hotspot_log version='%d %d'"
465 " process='%d' time_ms='"INT64_FORMAT"'",
466 LOG_MAJOR_VERSION, LOG_MINOR_VERSION,
467 os::current_process_id(), time_ms);
468 // Write VM version header immediately.
469 xs->head("vm_version");
470 xs->head("name"); xs->text("%s", VM_Version::vm_name()); xs->cr();
471 xs->tail("name");
472 xs->head("release"); xs->text("%s", VM_Version::vm_release()); xs->cr();
473 xs->tail("release");
474 xs->head("info"); xs->text("%s", VM_Version::internal_vm_info_string()); xs->cr();
475 xs->tail("info");
476 xs->tail("vm_version");
477 // Record information about the command-line invocation.
478 xs->head("vm_arguments"); // Cf. Arguments::print_on()
479 if (Arguments::num_jvm_flags() > 0) {
480 xs->head("flags");
481 Arguments::print_jvm_flags_on(xs->text());
482 xs->tail("flags");
483 }
484 if (Arguments::num_jvm_args() > 0) {
485 xs->head("args");
486 Arguments::print_jvm_args_on(xs->text());
487 xs->tail("args");
488 }
489 if (Arguments::java_command() != NULL) {
490 xs->head("command"); xs->text()->print_cr("%s", Arguments::java_command());
491 xs->tail("command");
492 }
493 if (Arguments::sun_java_launcher() != NULL) {
494 xs->head("launcher"); xs->text()->print_cr("%s", Arguments::sun_java_launcher());
495 xs->tail("launcher");
496 }
497 if (Arguments::system_properties() != NULL) {
498 xs->head("properties");
499 // Print it as a java-style property list.
500 // System properties don't generally contain newlines, so don't bother with unparsing.
501 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) {
502 xs->text()->print_cr("%s=%s", p->key(), p->value());
503 }
504 xs->tail("properties");
505 }
506 xs->tail("vm_arguments");
507 // tty output per se is grouped under the <tty>...</tty> element.
508 xs->head("tty");
509 // All further non-markup text gets copied to the tty:
510 xs->_text = this; // requires friend declaration!
511 } else {
512 delete(file);
513 // and leave xtty as NULL
514 LogVMOutput = false;
515 DisplayVMOutput = true;
516 LogCompilation = false;
517 }
518 }
520 // finish_log() is called during normal VM shutdown. finish_log_on_error() is
521 // called by ostream_abort() after a fatal error.
522 //
523 void defaultStream::finish_log() {
524 xmlStream* xs = _outer_xmlStream;
525 xs->done("tty");
527 // Other log forks are appended here, at the End of Time:
528 CompileLog::finish_log(xs->out()); // write compile logging, if any, now
530 xs->done("hotspot_log");
531 xs->flush();
533 fileStream* file = _log_file;
534 _log_file = NULL;
536 delete _outer_xmlStream;
537 _outer_xmlStream = NULL;
539 file->flush();
540 delete file;
541 }
543 void defaultStream::finish_log_on_error(char *buf, int buflen) {
544 xmlStream* xs = _outer_xmlStream;
546 if (xs && xs->out()) {
548 xs->done_raw("tty");
550 // Other log forks are appended here, at the End of Time:
551 CompileLog::finish_log_on_error(xs->out(), buf, buflen); // write compile logging, if any, now
553 xs->done_raw("hotspot_log");
554 xs->flush();
556 fileStream* file = _log_file;
557 _log_file = NULL;
558 _outer_xmlStream = NULL;
560 if (file) {
561 file->flush();
563 // Can't delete or close the file because delete and fclose aren't
564 // async-safe. We are about to die, so leave it to the kernel.
565 // delete file;
566 }
567 }
568 }
570 intx defaultStream::hold(intx writer_id) {
571 bool has_log = has_log_file(); // check before locking
572 if (// impossible, but who knows?
573 writer_id == NO_WRITER ||
575 // bootstrap problem
576 tty_lock == NULL ||
578 // can't grab a lock or call Thread::current() if TLS isn't initialized
579 ThreadLocalStorage::thread() == NULL ||
581 // developer hook
582 !SerializeVMOutput ||
584 // VM already unhealthy
585 is_error_reported() ||
587 // safepoint == global lock (for VM only)
588 (SafepointSynchronize::is_synchronizing() &&
589 Thread::current()->is_VM_thread())
590 ) {
591 // do not attempt to lock unless we know the thread and the VM is healthy
592 return NO_WRITER;
593 }
594 if (_writer == writer_id) {
595 // already held, no need to re-grab the lock
596 return NO_WRITER;
597 }
598 tty_lock->lock_without_safepoint_check();
599 // got the lock
600 if (writer_id != _last_writer) {
601 if (has_log) {
602 _log_file->bol();
603 // output a hint where this output is coming from:
604 _log_file->print_cr("<writer thread='"INTX_FORMAT"'/>", writer_id);
605 }
606 _last_writer = writer_id;
607 }
608 _writer = writer_id;
609 return writer_id;
610 }
612 void defaultStream::release(intx holder) {
613 if (holder == NO_WRITER) {
614 // nothing to release: either a recursive lock, or we scribbled (too bad)
615 return;
616 }
617 if (_writer != holder) {
618 return; // already unlocked, perhaps via break_tty_lock_for_safepoint
619 }
620 _writer = NO_WRITER;
621 tty_lock->unlock();
622 }
625 // Yuck: jio_print does not accept char*/len.
626 static void call_jio_print(const char* s, size_t len) {
627 char buffer[O_BUFLEN+100];
628 if (len > sizeof(buffer)-1) {
629 warning("increase O_BUFLEN in ostream.cpp -- output truncated");
630 len = sizeof(buffer)-1;
631 }
632 strncpy(buffer, s, len);
633 buffer[len] = '\0';
634 jio_print(buffer);
635 }
638 void defaultStream::write(const char* s, size_t len) {
639 intx thread_id = os::current_thread_id();
640 intx holder = hold(thread_id);
642 if (DisplayVMOutput &&
643 (_outer_xmlStream == NULL || !_outer_xmlStream->inside_attrs())) {
644 // print to output stream. It can be redirected by a vfprintf hook
645 if (s[len] == '\0') {
646 jio_print(s);
647 } else {
648 call_jio_print(s, len);
649 }
650 }
652 // print to log file
653 if (has_log_file()) {
654 int nl0 = _newlines;
655 xmlTextStream::write(s, len);
656 // flush the log file too, if there were any newlines
657 if (nl0 != _newlines){
658 flush();
659 }
660 } else {
661 update_position(s, len);
662 }
664 release(holder);
665 }
667 intx ttyLocker::hold_tty() {
668 if (defaultStream::instance == NULL) return defaultStream::NO_WRITER;
669 intx thread_id = os::current_thread_id();
670 return defaultStream::instance->hold(thread_id);
671 }
673 void ttyLocker::release_tty(intx holder) {
674 if (holder == defaultStream::NO_WRITER) return;
675 defaultStream::instance->release(holder);
676 }
678 void ttyLocker::break_tty_lock_for_safepoint(intx holder) {
679 if (defaultStream::instance != NULL &&
680 defaultStream::instance->writer() == holder) {
681 if (xtty != NULL) {
682 xtty->print_cr("<!-- safepoint while printing -->");
683 }
684 defaultStream::instance->release(holder);
685 }
686 // (else there was no lock to break)
687 }
689 void ostream_init() {
690 if (defaultStream::instance == NULL) {
691 defaultStream::instance = new(ResourceObj::C_HEAP) defaultStream();
692 tty = defaultStream::instance;
694 // We want to ensure that time stamps in GC logs consider time 0
695 // the time when the JVM is initialized, not the first time we ask
696 // for a time stamp. So, here, we explicitly update the time stamp
697 // of tty.
698 tty->time_stamp().update_to(1);
699 }
700 }
702 void ostream_init_log() {
703 // For -Xloggc:<file> option - called in runtime/thread.cpp
704 // Note : this must be called AFTER ostream_init()
706 gclog_or_tty = tty; // default to tty
707 if (Arguments::gc_log_filename() != NULL) {
708 fileStream * gclog = new(ResourceObj::C_HEAP)
709 fileStream(Arguments::gc_log_filename());
710 if (gclog->is_open()) {
711 // now we update the time stamp of the GC log to be synced up
712 // with tty.
713 gclog->time_stamp().update_to(tty->time_stamp().ticks());
714 gclog_or_tty = gclog;
715 }
716 }
718 // If we haven't lazily initialized the logfile yet, do it now,
719 // to avoid the possibility of lazy initialization during a VM
720 // crash, which can affect the stability of the fatal error handler.
721 defaultStream::instance->has_log_file();
722 }
724 // ostream_exit() is called during normal VM exit to finish log files, flush
725 // output and free resource.
726 void ostream_exit() {
727 static bool ostream_exit_called = false;
728 if (ostream_exit_called) return;
729 ostream_exit_called = true;
730 if (gclog_or_tty != tty) {
731 delete gclog_or_tty;
732 }
733 {
734 // we temporaly disable PrintMallocFree here
735 // as otherwise it'll lead to using of almost deleted
736 // tty or defaultStream::instance in logging facility
737 // of HeapFree(), see 6391258
738 DEBUG_ONLY(FlagSetting fs(PrintMallocFree, false);)
739 if (tty != defaultStream::instance) {
740 delete tty;
741 }
742 if (defaultStream::instance != NULL) {
743 delete defaultStream::instance;
744 }
745 }
746 tty = NULL;
747 xtty = NULL;
748 gclog_or_tty = NULL;
749 defaultStream::instance = NULL;
750 }
752 // ostream_abort() is called by os::abort() when VM is about to die.
753 void ostream_abort() {
754 // Here we can't delete gclog_or_tty and tty, just flush their output
755 if (gclog_or_tty) gclog_or_tty->flush();
756 if (tty) tty->flush();
758 if (defaultStream::instance != NULL) {
759 static char buf[4096];
760 defaultStream::instance->finish_log_on_error(buf, sizeof(buf));
761 }
762 }
764 staticBufferStream::staticBufferStream(char* buffer, size_t buflen,
765 outputStream *outer_stream) {
766 _buffer = buffer;
767 _buflen = buflen;
768 _outer_stream = outer_stream;
769 }
771 void staticBufferStream::write(const char* c, size_t len) {
772 _outer_stream->print_raw(c, (int)len);
773 }
775 void staticBufferStream::flush() {
776 _outer_stream->flush();
777 }
779 void staticBufferStream::print(const char* format, ...) {
780 va_list ap;
781 va_start(ap, format);
782 size_t len;
783 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, false, len);
784 write(str, len);
785 va_end(ap);
786 }
788 void staticBufferStream::print_cr(const char* format, ...) {
789 va_list ap;
790 va_start(ap, format);
791 size_t len;
792 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, true, len);
793 write(str, len);
794 va_end(ap);
795 }
797 void staticBufferStream::vprint(const char *format, va_list argptr) {
798 size_t len;
799 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, false, len);
800 write(str, len);
801 }
803 void staticBufferStream::vprint_cr(const char* format, va_list argptr) {
804 size_t len;
805 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, true, len);
806 write(str, len);
807 }
809 bufferedStream::bufferedStream(size_t initial_size, size_t bufmax) : outputStream() {
810 buffer_length = initial_size;
811 buffer = NEW_C_HEAP_ARRAY(char, buffer_length);
812 buffer_pos = 0;
813 buffer_fixed = false;
814 buffer_max = bufmax;
815 }
817 bufferedStream::bufferedStream(char* fixed_buffer, size_t fixed_buffer_size, size_t bufmax) : outputStream() {
818 buffer_length = fixed_buffer_size;
819 buffer = fixed_buffer;
820 buffer_pos = 0;
821 buffer_fixed = true;
822 buffer_max = bufmax;
823 }
825 void bufferedStream::write(const char* s, size_t len) {
827 if(buffer_pos + len > buffer_max) {
828 flush();
829 }
831 size_t end = buffer_pos + len;
832 if (end >= buffer_length) {
833 if (buffer_fixed) {
834 // if buffer cannot resize, silently truncate
835 len = buffer_length - buffer_pos - 1;
836 } else {
837 // For small overruns, double the buffer. For larger ones,
838 // increase to the requested size.
839 if (end < buffer_length * 2) {
840 end = buffer_length * 2;
841 }
842 buffer = REALLOC_C_HEAP_ARRAY(char, buffer, end);
843 buffer_length = end;
844 }
845 }
846 memcpy(buffer + buffer_pos, s, len);
847 buffer_pos += len;
848 update_position(s, len);
849 }
851 char* bufferedStream::as_string() {
852 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1);
853 strncpy(copy, buffer, buffer_pos);
854 copy[buffer_pos] = 0; // terminating null
855 return copy;
856 }
858 bufferedStream::~bufferedStream() {
859 if (!buffer_fixed) {
860 FREE_C_HEAP_ARRAY(char, buffer);
861 }
862 }
864 #ifndef PRODUCT
866 #if defined(SOLARIS) || defined(LINUX)
867 #include <sys/types.h>
868 #include <sys/socket.h>
869 #include <netinet/in.h>
870 #include <arpa/inet.h>
871 #endif
873 // Network access
874 networkStream::networkStream() : bufferedStream(1024*10, 1024*10) {
876 _socket = -1;
878 int result = os::socket(AF_INET, SOCK_STREAM, 0);
879 if (result <= 0) {
880 assert(false, "Socket could not be created!");
881 } else {
882 _socket = result;
883 }
884 }
886 int networkStream::read(char *buf, size_t len) {
887 return os::recv(_socket, buf, (int)len, 0);
888 }
890 void networkStream::flush() {
891 if (size() != 0) {
892 int result = os::raw_send(_socket, (char *)base(), (int)size(), 0);
893 assert(result != -1, "connection error");
894 assert(result == (int)size(), "didn't send enough data");
895 }
896 reset();
897 }
899 networkStream::~networkStream() {
900 close();
901 }
903 void networkStream::close() {
904 if (_socket != -1) {
905 flush();
906 os::socket_close(_socket);
907 _socket = -1;
908 }
909 }
911 bool networkStream::connect(const char *ip, short port) {
913 struct sockaddr_in server;
914 server.sin_family = AF_INET;
915 server.sin_port = htons(port);
917 server.sin_addr.s_addr = inet_addr(ip);
918 if (server.sin_addr.s_addr == (uint32_t)-1) {
919 struct hostent* host = os::get_host_by_name((char*)ip);
920 if (host != NULL) {
921 memcpy(&server.sin_addr, host->h_addr_list[0], host->h_length);
922 } else {
923 return false;
924 }
925 }
928 int result = os::connect(_socket, (struct sockaddr*)&server, sizeof(struct sockaddr_in));
929 return (result >= 0);
930 }
932 #endif