1 /*
2 * Copyright (c) 1997, 2011, 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 #ifdef TARGET_OS_FAMILY_bsd
43 # include "os_bsd.inline.hpp"
44 #endif
45
46 extern "C" void jio_print(const char* s); // Declarationtion of jvm method
47
48 outputStream::outputStream(int width) {
49 _width = width;
50 _position = 0;
51 _newlines = 0;
52 _precount = 0;
53 _indentation = 0;
54 }
55
56 outputStream::outputStream(int width, bool has_time_stamps) {
57 _width = width;
58 _position = 0;
59 _newlines = 0;
60 _precount = 0;
61 _indentation = 0;
62 if (has_time_stamps) _stamp.update();
63 }
64
65 void outputStream::update_position(const char* s, size_t len) {
66 for (size_t i = 0; i < len; i++) {
67 char ch = s[i];
68 if (ch == '\n') {
69 _newlines += 1;
70 _precount += _position + 1;
71 _position = 0;
72 } else if (ch == '\t') {
73 int tw = 8 - (_position & 7);
74 _position += tw;
75 _precount -= tw-1; // invariant: _precount + _position == total count
76 } else {
77 _position += 1;
78 }
79 }
80 }
81
82 // Execute a vsprintf, using the given buffer if necessary.
83 // Return a pointer to the formatted string.
84 const char* outputStream::do_vsnprintf(char* buffer, size_t buflen,
85 const char* format, va_list ap,
86 bool add_cr,
87 size_t& result_len) {
88 const char* result;
89 if (add_cr) buflen--;
90 if (!strchr(format, '%')) {
91 // constant format string
92 result = format;
93 result_len = strlen(result);
94 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate
95 } else if (format[0] == '%' && format[1] == 's' && format[2] == '\0') {
96 // trivial copy-through format string
97 result = va_arg(ap, const char*);
98 result_len = strlen(result);
99 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate
100 } else if (vsnprintf(buffer, buflen, format, ap) >= 0) {
101 result = buffer;
102 result_len = strlen(result);
103 } else {
104 DEBUG_ONLY(warning("increase O_BUFLEN in ostream.hpp -- output truncated");)
105 result = buffer;
106 result_len = buflen - 1;
107 buffer[result_len] = 0;
108 }
109 if (add_cr) {
110 if (result != buffer) {
111 strncpy(buffer, result, buflen);
112 result = buffer;
113 }
114 buffer[result_len++] = '\n';
115 buffer[result_len] = 0;
116 }
117 return result;
118 }
119
120 void outputStream::print(const char* format, ...) {
121 char buffer[O_BUFLEN];
122 va_list ap;
123 va_start(ap, format);
124 size_t len;
125 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, false, len);
126 write(str, len);
127 va_end(ap);
128 }
129
130 void outputStream::print_cr(const char* format, ...) {
131 char buffer[O_BUFLEN];
132 va_list ap;
133 va_start(ap, format);
134 size_t len;
135 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, true, len);
136 write(str, len);
137 va_end(ap);
138 }
139
140 void outputStream::vprint(const char *format, va_list argptr) {
141 char buffer[O_BUFLEN];
142 size_t len;
143 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, false, len);
144 write(str, len);
145 }
146
147 void outputStream::vprint_cr(const char* format, va_list argptr) {
148 char buffer[O_BUFLEN];
149 size_t len;
150 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, true, len);
151 write(str, len);
152 }
153
154 void outputStream::fill_to(int col) {
155 int need_fill = col - position();
156 sp(need_fill);
157 }
158
159 void outputStream::move_to(int col, int slop, int min_space) {
160 if (position() >= col + slop)
161 cr();
162 int need_fill = col - position();
163 if (need_fill < min_space)
164 need_fill = min_space;
165 sp(need_fill);
166 }
167
168 void outputStream::put(char ch) {
169 assert(ch != 0, "please fix call site");
170 char buf[] = { ch, '\0' };
171 write(buf, 1);
172 }
173
174 #define SP_USE_TABS false
175
176 void outputStream::sp(int count) {
177 if (count < 0) return;
178 if (SP_USE_TABS && count >= 8) {
179 int target = position() + count;
180 while (count >= 8) {
181 this->write("\t", 1);
182 count -= 8;
183 }
184 count = target - position();
185 }
186 while (count > 0) {
187 int nw = (count > 8) ? 8 : count;
188 this->write(" ", nw);
189 count -= nw;
190 }
191 }
192
193 void outputStream::cr() {
194 this->write("\n", 1);
195 }
196
197 void outputStream::stamp() {
198 if (! _stamp.is_updated()) {
199 _stamp.update(); // start at 0 on first call to stamp()
200 }
201
202 // outputStream::stamp() may get called by ostream_abort(), use snprintf
203 // to avoid allocating large stack buffer in print().
204 char buf[40];
205 jio_snprintf(buf, sizeof(buf), "%.3f", _stamp.seconds());
206 print_raw(buf);
207 }
208
209 void outputStream::stamp(bool guard,
210 const char* prefix,
211 const char* suffix) {
212 if (!guard) {
213 return;
214 }
215 print_raw(prefix);
216 stamp();
217 print_raw(suffix);
218 }
219
220 void outputStream::date_stamp(bool guard,
221 const char* prefix,
222 const char* suffix) {
223 if (!guard) {
224 return;
225 }
226 print_raw(prefix);
227 static const char error_time[] = "yyyy-mm-ddThh:mm:ss.mmm+zzzz";
228 static const int buffer_length = 32;
229 char buffer[buffer_length];
230 const char* iso8601_result = os::iso8601_time(buffer, buffer_length);
231 if (iso8601_result != NULL) {
232 print_raw(buffer);
233 } else {
234 print_raw(error_time);
235 }
236 print_raw(suffix);
237 return;
238 }
239
240 outputStream& outputStream::indent() {
241 while (_position < _indentation) sp();
242 return *this;
243 }
244
245 void outputStream::print_jlong(jlong value) {
246 // N.B. Same as INT64_FORMAT
247 print(os::jlong_format_specifier(), value);
248 }
249
250 void outputStream::print_julong(julong value) {
251 // N.B. Same as UINT64_FORMAT
252 print(os::julong_format_specifier(), value);
253 }
254
255 /**
256 * This prints out hex data in a 'windbg' or 'xxd' form, where each line is:
257 * <hex-address>: 8 * <hex-halfword> <ascii translation (optional)>
258 * example:
259 * 0000000: 7f44 4f46 0102 0102 0000 0000 0000 0000 .DOF............
260 * 0000010: 0000 0000 0000 0040 0000 0020 0000 0005 .......@... ....
261 * 0000020: 0000 0000 0000 0040 0000 0000 0000 015d .......@.......]
262 * ...
263 *
264 * indent is applied to each line. Ends with a CR.
265 */
266 void outputStream::print_data(void* data, size_t len, bool with_ascii) {
267 size_t limit = (len + 16) / 16 * 16;
268 for (size_t i = 0; i < limit; ++i) {
269 if (i % 16 == 0) {
270 indent().print("%07x:", i);
271 }
272 if (i % 2 == 0) {
273 print(" ");
274 }
275 if (i < len) {
276 print("%02x", ((unsigned char*)data)[i]);
277 } else {
278 print(" ");
279 }
280 if ((i + 1) % 16 == 0) {
281 if (with_ascii) {
282 print(" ");
283 for (size_t j = 0; j < 16; ++j) {
284 size_t idx = i + j - 15;
285 if (idx < len) {
286 char c = ((char*)data)[idx];
287 print("%c", c >= 32 && c <= 126 ? c : '.');
288 }
289 }
290 }
291 print_cr("");
292 }
293 }
294 }
295
296 stringStream::stringStream(size_t initial_size) : outputStream() {
297 buffer_length = initial_size;
298 buffer = NEW_RESOURCE_ARRAY(char, buffer_length);
299 buffer_pos = 0;
300 buffer_fixed = false;
301 }
302
303 // useful for output to fixed chunks of memory, such as performance counters
304 stringStream::stringStream(char* fixed_buffer, size_t fixed_buffer_size) : outputStream() {
305 buffer_length = fixed_buffer_size;
306 buffer = fixed_buffer;
307 buffer_pos = 0;
308 buffer_fixed = true;
309 }
310
311 void stringStream::write(const char* s, size_t len) {
312 size_t write_len = len; // number of non-null bytes to write
313 size_t end = buffer_pos + len + 1; // position after write and final '\0'
314 if (end > buffer_length) {
315 if (buffer_fixed) {
316 // if buffer cannot resize, silently truncate
317 end = buffer_length;
318 write_len = end - buffer_pos - 1; // leave room for the final '\0'
319 } else {
320 // For small overruns, double the buffer. For larger ones,
321 // increase to the requested size.
322 if (end < buffer_length * 2) {
323 end = buffer_length * 2;
324 }
325 char* oldbuf = buffer;
326 buffer = NEW_RESOURCE_ARRAY(char, end);
327 strncpy(buffer, oldbuf, buffer_pos);
328 buffer_length = end;
329 }
330 }
331 // invariant: buffer is always null-terminated
332 guarantee(buffer_pos + write_len + 1 <= buffer_length, "stringStream oob");
333 buffer[buffer_pos + write_len] = 0;
334 strncpy(buffer + buffer_pos, s, write_len);
335 buffer_pos += write_len;
336
337 // Note that the following does not depend on write_len.
338 // This means that position and count get updated
339 // even when overflow occurs.
340 update_position(s, len);
341 }
342
343 char* stringStream::as_string() {
344 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1);
345 strncpy(copy, buffer, buffer_pos);
346 copy[buffer_pos] = 0; // terminating null
347 return copy;
348 }
349
350 stringStream::~stringStream() {}
351
352 xmlStream* xtty;
353 outputStream* tty;
354 outputStream* gclog_or_tty;
355 extern Mutex* tty_lock;
356
357 fileStream::fileStream(const char* file_name) {
358 _file = fopen(file_name, "w");
359 _need_close = true;
360 }
361
362 fileStream::fileStream(const char* file_name, const char* opentype) {
363 _file = fopen(file_name, opentype);
364 _need_close = true;
365 }
366
367 void fileStream::write(const char* s, size_t len) {
368 if (_file != NULL) {
369 // Make an unused local variable to avoid warning from gcc 4.x compiler.
370 size_t count = fwrite(s, 1, len, _file);
371 }
372 update_position(s, len);
373 }
374
375 long fileStream::fileSize() {
376 long size = -1;
377 if (_file != NULL) {
378 long pos = ::ftell(_file);
379 if (::fseek(_file, 0, SEEK_END) == 0) {
380 size = ::ftell(_file);
381 }
382 ::fseek(_file, pos, SEEK_SET);
383 }
384 return size;
385 }
386
387 char* fileStream::readln(char *data, int count ) {
388 char * ret = ::fgets(data, count, _file);
389 //Get rid of annoying \n char
390 data[::strlen(data)-1] = '\0';
391 return ret;
392 }
393
394 fileStream::~fileStream() {
395 if (_file != NULL) {
396 if (_need_close) fclose(_file);
397 _file = NULL;
398 }
399 }
400
401 void fileStream::flush() {
402 fflush(_file);
403 }
404
405 fdStream::fdStream(const char* file_name) {
406 _fd = open(file_name, O_WRONLY | O_CREAT | O_TRUNC, 0666);
407 _need_close = true;
408 }
409
410 fdStream::~fdStream() {
411 if (_fd != -1) {
412 if (_need_close) close(_fd);
413 _fd = -1;
414 }
415 }
416
417 void fdStream::write(const char* s, size_t len) {
418 if (_fd != -1) {
419 // Make an unused local variable to avoid warning from gcc 4.x compiler.
420 size_t count = ::write(_fd, s, (int)len);
421 }
422 update_position(s, len);
423 }
424
425 rotatingFileStream::~rotatingFileStream() {
426 if (_file != NULL) {
427 if (_need_close) fclose(_file);
428 _file = NULL;
429 FREE_C_HEAP_ARRAY(char, _file_name, mtInternal);
430 _file_name = NULL;
431 }
432 }
433
434 rotatingFileStream::rotatingFileStream(const char* file_name) {
435 _cur_file_num = 0;
436 _bytes_writen = 0L;
437 _file_name = NEW_C_HEAP_ARRAY(char, strlen(file_name)+10, mtInternal);
438 jio_snprintf(_file_name, strlen(file_name)+10, "%s.%d", file_name, _cur_file_num);
439 _file = fopen(_file_name, "w");
440 _need_close = true;
441 }
442
443 rotatingFileStream::rotatingFileStream(const char* file_name, const char* opentype) {
444 _cur_file_num = 0;
445 _bytes_writen = 0L;
446 _file_name = NEW_C_HEAP_ARRAY(char, strlen(file_name)+10, mtInternal);
447 jio_snprintf(_file_name, strlen(file_name)+10, "%s.%d", file_name, _cur_file_num);
448 _file = fopen(_file_name, opentype);
449 _need_close = true;
450 }
451
452 void rotatingFileStream::write(const char* s, size_t len) {
453 if (_file != NULL) {
454 // Make an unused local variable to avoid warning from gcc 4.x compiler.
455 size_t count = fwrite(s, 1, len, _file);
456 Atomic::add((jlong)count, &_bytes_writen);
457 }
458 update_position(s, len);
459 }
460
461 // rotate_log must be called from VMThread at safepoint. In case need change parameters
462 // for gc log rotation from thread other than VMThread, a sub type of VM_Operation
463 // should be created and be submitted to VMThread's operation queue. DO NOT call this
464 // function directly. Currently, it is safe to rotate log at safepoint through VMThread.
465 // That is, no mutator threads and concurrent GC threads run parallel with VMThread to
466 // write to gc log file at safepoint. If in future, changes made for mutator threads or
467 // concurrent GC threads to run parallel with VMThread at safepoint, write and rotate_log
468 // must be synchronized.
469 void rotatingFileStream::rotate_log() {
470 if (_bytes_writen < (jlong)GCLogFileSize) return;
471 #ifdef ASSERT
472 Thread *thread = Thread::current();
473 assert(thread == NULL ||
474 (thread->is_VM_thread() && SafepointSynchronize::is_at_safepoint()),
475 "Must be VMThread at safepoint");
476 #endif
477 if (NumberOfGCLogFiles == 1) {
478 // rotate in same file
479 rewind();
480 _bytes_writen = 0L;
481 return;
482 }
483
484 // rotate file in names file.0, file.1, file.2, ..., file.<MaxGCLogFileNumbers-1>
485 // close current file, rotate to next file
486 if (_file != NULL) {
487 _cur_file_num ++;
488 if (_cur_file_num >= NumberOfGCLogFiles) _cur_file_num = 0;
489 jio_snprintf(_file_name, strlen(Arguments::gc_log_filename()) + 10, "%s.%d",
490 Arguments::gc_log_filename(), _cur_file_num);
491 fclose(_file);
492 _file = NULL;
493 }
494 _file = fopen(_file_name, "w");
495 if (_file != NULL) {
496 _bytes_writen = 0L;
497 _need_close = true;
498 } else {
499 tty->print_cr("failed to open rotation log file %s due to %s\n",
500 _file_name, strerror(errno));
501 _need_close = false;
502 }
503 }
504
505 defaultStream* defaultStream::instance = NULL;
506 int defaultStream::_output_fd = 1;
507 int defaultStream::_error_fd = 2;
508 FILE* defaultStream::_output_stream = stdout;
509 FILE* defaultStream::_error_stream = stderr;
510
511 #define LOG_MAJOR_VERSION 160
512 #define LOG_MINOR_VERSION 1
513
514 void defaultStream::init() {
515 _inited = true;
516 if (LogVMOutput || LogCompilation) {
517 init_log();
518 }
519 }
520
521 bool defaultStream::has_log_file() {
522 // lazily create log file (at startup, LogVMOutput is false even
523 // if +LogVMOutput is used, because the flags haven't been parsed yet)
524 // For safer printing during fatal error handling, do not init logfile
525 // if a VM error has been reported.
526 if (!_inited && !is_error_reported()) init();
527 return _log_file != NULL;
528 }
529
530 static const char* make_log_name(const char* log_name, const char* force_directory) {
531 const char* basename = log_name;
532 char file_sep = os::file_separator()[0];
533 const char* cp;
534 for (cp = log_name; *cp != '\0'; cp++) {
535 if (*cp == '/' || *cp == file_sep) {
536 basename = cp+1;
537 }
538 }
539 const char* nametail = log_name;
540
541 // Compute buffer length
542 size_t buffer_length;
543 if (force_directory != NULL) {
544 buffer_length = strlen(force_directory) + strlen(os::file_separator()) +
545 strlen(basename) + 1;
546 } else {
547 buffer_length = strlen(log_name) + 1;
548 }
549
550 const char* star = strchr(basename, '*');
551 int star_pos = (star == NULL) ? -1 : (star - nametail);
552 int skip = 1;
553 if (star == NULL) {
554 // Try %p
555 star = strstr(basename, "%p");
556 if (star != NULL) {
557 skip = 2;
558 }
559 }
560 star_pos = (star == NULL) ? -1 : (star - nametail);
561
562 char pid[32];
563 if (star_pos >= 0) {
564 jio_snprintf(pid, sizeof(pid), "%u", os::current_process_id());
565 buffer_length += strlen(pid);
566 }
567
568 // Create big enough buffer.
569 char *buf = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal);
570
571 strcpy(buf, "");
572 if (force_directory != NULL) {
573 strcat(buf, force_directory);
574 strcat(buf, os::file_separator());
575 nametail = basename; // completely skip directory prefix
576 }
577
578 if (star_pos >= 0) {
579 // convert foo*bar.log or foo%pbar.log to foo123bar.log
580 int buf_pos = (int) strlen(buf);
581 strncpy(&buf[buf_pos], nametail, star_pos);
582 strcpy(&buf[buf_pos + star_pos], pid);
583 nametail += star_pos + skip; // skip prefix and pid format
584 }
585
586 strcat(buf, nametail); // append rest of name, or all of name
587 return buf;
588 }
589
590 void defaultStream::init_log() {
591 // %%% Need a MutexLocker?
592 const char* log_name = LogFile != NULL ? LogFile : "hotspot.log";
593 const char* try_name = make_log_name(log_name, NULL);
594 fileStream* file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name);
595 if (!file->is_open()) {
596 // Try again to open the file.
597 char warnbuf[O_BUFLEN*2];
598 jio_snprintf(warnbuf, sizeof(warnbuf),
599 "Warning: Cannot open log file: %s\n", try_name);
600 // Note: This feature is for maintainer use only. No need for L10N.
601 jio_print(warnbuf);
602 FREE_C_HEAP_ARRAY(char, try_name, mtInternal);
603 try_name = make_log_name("hs_pid%p.log", os::get_temp_directory());
604 jio_snprintf(warnbuf, sizeof(warnbuf),
605 "Warning: Forcing option -XX:LogFile=%s\n", try_name);
606 jio_print(warnbuf);
607 delete file;
608 file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name);
609 FREE_C_HEAP_ARRAY(char, try_name, mtInternal);
610 }
611 if (file->is_open()) {
612 _log_file = file;
613 xmlStream* xs = new(ResourceObj::C_HEAP, mtInternal) xmlStream(file);
614 _outer_xmlStream = xs;
615 if (this == tty) xtty = xs;
616 // Write XML header.
617 xs->print_cr("<?xml version='1.0' encoding='UTF-8'?>");
618 // (For now, don't bother to issue a DTD for this private format.)
619 jlong time_ms = os::javaTimeMillis() - tty->time_stamp().milliseconds();
620 // %%% Should be: jlong time_ms = os::start_time_milliseconds(), if
621 // we ever get round to introduce that method on the os class
622 xs->head("hotspot_log version='%d %d'"
623 " process='%d' time_ms='"INT64_FORMAT"'",
624 LOG_MAJOR_VERSION, LOG_MINOR_VERSION,
625 os::current_process_id(), time_ms);
626 // Write VM version header immediately.
627 xs->head("vm_version");
628 xs->head("name"); xs->text("%s", VM_Version::vm_name()); xs->cr();
629 xs->tail("name");
630 xs->head("release"); xs->text("%s", VM_Version::vm_release()); xs->cr();
631 xs->tail("release");
632 xs->head("info"); xs->text("%s", VM_Version::internal_vm_info_string()); xs->cr();
633 xs->tail("info");
634 xs->tail("vm_version");
635 // Record information about the command-line invocation.
636 xs->head("vm_arguments"); // Cf. Arguments::print_on()
637 if (Arguments::num_jvm_flags() > 0) {
638 xs->head("flags");
639 Arguments::print_jvm_flags_on(xs->text());
640 xs->tail("flags");
641 }
642 if (Arguments::num_jvm_args() > 0) {
643 xs->head("args");
644 Arguments::print_jvm_args_on(xs->text());
645 xs->tail("args");
646 }
647 if (Arguments::java_command() != NULL) {
648 xs->head("command"); xs->text()->print_cr("%s", Arguments::java_command());
649 xs->tail("command");
650 }
651 if (Arguments::sun_java_launcher() != NULL) {
652 xs->head("launcher"); xs->text()->print_cr("%s", Arguments::sun_java_launcher());
653 xs->tail("launcher");
654 }
655 if (Arguments::system_properties() != NULL) {
656 xs->head("properties");
657 // Print it as a java-style property list.
658 // System properties don't generally contain newlines, so don't bother with unparsing.
659 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) {
660 xs->text()->print_cr("%s=%s", p->key(), p->value());
661 }
662 xs->tail("properties");
663 }
664 xs->tail("vm_arguments");
665 // tty output per se is grouped under the <tty>...</tty> element.
666 xs->head("tty");
667 // All further non-markup text gets copied to the tty:
668 xs->_text = this; // requires friend declaration!
669 } else {
670 delete(file);
671 // and leave xtty as NULL
672 LogVMOutput = false;
673 DisplayVMOutput = true;
674 LogCompilation = false;
675 }
676 }
677
678 // finish_log() is called during normal VM shutdown. finish_log_on_error() is
679 // called by ostream_abort() after a fatal error.
680 //
681 void defaultStream::finish_log() {
682 xmlStream* xs = _outer_xmlStream;
683 xs->done("tty");
684
685 // Other log forks are appended here, at the End of Time:
686 CompileLog::finish_log(xs->out()); // write compile logging, if any, now
687
688 xs->done("hotspot_log");
689 xs->flush();
690
691 fileStream* file = _log_file;
692 _log_file = NULL;
693
694 delete _outer_xmlStream;
695 _outer_xmlStream = NULL;
696
697 file->flush();
698 delete file;
699 }
700
701 void defaultStream::finish_log_on_error(char *buf, int buflen) {
702 xmlStream* xs = _outer_xmlStream;
703
704 if (xs && xs->out()) {
705
706 xs->done_raw("tty");
707
708 // Other log forks are appended here, at the End of Time:
709 CompileLog::finish_log_on_error(xs->out(), buf, buflen); // write compile logging, if any, now
710
711 xs->done_raw("hotspot_log");
712 xs->flush();
713
714 fileStream* file = _log_file;
715 _log_file = NULL;
716 _outer_xmlStream = NULL;
717
718 if (file) {
719 file->flush();
720
721 // Can't delete or close the file because delete and fclose aren't
722 // async-safe. We are about to die, so leave it to the kernel.
723 // delete file;
724 }
725 }
726 }
727
728 intx defaultStream::hold(intx writer_id) {
729 bool has_log = has_log_file(); // check before locking
730 if (// impossible, but who knows?
731 writer_id == NO_WRITER ||
732
733 // bootstrap problem
734 tty_lock == NULL ||
735
736 // can't grab a lock or call Thread::current() if TLS isn't initialized
737 ThreadLocalStorage::thread() == NULL ||
738
739 // developer hook
740 !SerializeVMOutput ||
741
742 // VM already unhealthy
743 is_error_reported() ||
744
745 // safepoint == global lock (for VM only)
746 (SafepointSynchronize::is_synchronizing() &&
747 Thread::current()->is_VM_thread())
748 ) {
749 // do not attempt to lock unless we know the thread and the VM is healthy
750 return NO_WRITER;
751 }
752 if (_writer == writer_id) {
753 // already held, no need to re-grab the lock
754 return NO_WRITER;
755 }
756 tty_lock->lock_without_safepoint_check();
757 // got the lock
758 if (writer_id != _last_writer) {
759 if (has_log) {
760 _log_file->bol();
761 // output a hint where this output is coming from:
762 _log_file->print_cr("<writer thread='"INTX_FORMAT"'/>", writer_id);
763 }
764 _last_writer = writer_id;
765 }
766 _writer = writer_id;
767 return writer_id;
768 }
769
770 void defaultStream::release(intx holder) {
771 if (holder == NO_WRITER) {
772 // nothing to release: either a recursive lock, or we scribbled (too bad)
773 return;
774 }
775 if (_writer != holder) {
776 return; // already unlocked, perhaps via break_tty_lock_for_safepoint
777 }
778 _writer = NO_WRITER;
779 tty_lock->unlock();
780 }
781
782
783 // Yuck: jio_print does not accept char*/len.
784 static void call_jio_print(const char* s, size_t len) {
785 char buffer[O_BUFLEN+100];
786 if (len > sizeof(buffer)-1) {
787 warning("increase O_BUFLEN in ostream.cpp -- output truncated");
788 len = sizeof(buffer)-1;
789 }
790 strncpy(buffer, s, len);
791 buffer[len] = '\0';
792 jio_print(buffer);
793 }
794
795
796 void defaultStream::write(const char* s, size_t len) {
797 intx thread_id = os::current_thread_id();
798 intx holder = hold(thread_id);
799
800 if (DisplayVMOutput &&
801 (_outer_xmlStream == NULL || !_outer_xmlStream->inside_attrs())) {
802 // print to output stream. It can be redirected by a vfprintf hook
803 if (s[len] == '\0') {
804 jio_print(s);
805 } else {
806 call_jio_print(s, len);
807 }
808 }
809
810 // print to log file
811 if (has_log_file()) {
812 int nl0 = _newlines;
813 xmlTextStream::write(s, len);
814 // flush the log file too, if there were any newlines
815 if (nl0 != _newlines){
816 flush();
817 }
818 } else {
819 update_position(s, len);
820 }
821
822 release(holder);
823 }
824
825 intx ttyLocker::hold_tty() {
826 if (defaultStream::instance == NULL) return defaultStream::NO_WRITER;
827 intx thread_id = os::current_thread_id();
828 return defaultStream::instance->hold(thread_id);
829 }
830
831 void ttyLocker::release_tty(intx holder) {
832 if (holder == defaultStream::NO_WRITER) return;
833 defaultStream::instance->release(holder);
834 }
835
836 bool ttyLocker::release_tty_if_locked() {
837 intx thread_id = os::current_thread_id();
838 if (defaultStream::instance->writer() == thread_id) {
839 // release the lock and return true so callers know if was
840 // previously held.
841 release_tty(thread_id);
842 return true;
843 }
844 return false;
845 }
846
847 void ttyLocker::break_tty_lock_for_safepoint(intx holder) {
848 if (defaultStream::instance != NULL &&
849 defaultStream::instance->writer() == holder) {
850 if (xtty != NULL) {
851 xtty->print_cr("<!-- safepoint while printing -->");
852 }
853 defaultStream::instance->release(holder);
854 }
855 // (else there was no lock to break)
856 }
857
858 void ostream_init() {
859 if (defaultStream::instance == NULL) {
860 defaultStream::instance = new(ResourceObj::C_HEAP, mtInternal) defaultStream();
861 tty = defaultStream::instance;
862
863 // We want to ensure that time stamps in GC logs consider time 0
864 // the time when the JVM is initialized, not the first time we ask
865 // for a time stamp. So, here, we explicitly update the time stamp
866 // of tty.
867 tty->time_stamp().update_to(1);
868 }
869 }
870
871 void ostream_init_log() {
872 // For -Xloggc:<file> option - called in runtime/thread.cpp
873 // Note : this must be called AFTER ostream_init()
874
875 gclog_or_tty = tty; // default to tty
876 if (Arguments::gc_log_filename() != NULL) {
877 fileStream * gclog = UseGCLogFileRotation ?
878 new(ResourceObj::C_HEAP, mtInternal)
879 rotatingFileStream(Arguments::gc_log_filename()) :
880 new(ResourceObj::C_HEAP, mtInternal)
881 fileStream(Arguments::gc_log_filename());
882 if (gclog->is_open()) {
883 // now we update the time stamp of the GC log to be synced up
884 // with tty.
885 gclog->time_stamp().update_to(tty->time_stamp().ticks());
886 }
887 gclog_or_tty = gclog;
888 }
889
890 // If we haven't lazily initialized the logfile yet, do it now,
891 // to avoid the possibility of lazy initialization during a VM
892 // crash, which can affect the stability of the fatal error handler.
893 defaultStream::instance->has_log_file();
894 }
895
896 // ostream_exit() is called during normal VM exit to finish log files, flush
897 // output and free resource.
898 void ostream_exit() {
899 static bool ostream_exit_called = false;
900 if (ostream_exit_called) return;
901 ostream_exit_called = true;
902 if (gclog_or_tty != tty) {
903 delete gclog_or_tty;
904 }
905 {
906 // we temporaly disable PrintMallocFree here
907 // as otherwise it'll lead to using of almost deleted
908 // tty or defaultStream::instance in logging facility
909 // of HeapFree(), see 6391258
910 DEBUG_ONLY(FlagSetting fs(PrintMallocFree, false);)
911 if (tty != defaultStream::instance) {
912 delete tty;
913 }
914 if (defaultStream::instance != NULL) {
915 delete defaultStream::instance;
916 }
917 }
918 tty = NULL;
919 xtty = NULL;
920 gclog_or_tty = NULL;
921 defaultStream::instance = NULL;
922 }
923
924 // ostream_abort() is called by os::abort() when VM is about to die.
925 void ostream_abort() {
926 // Here we can't delete gclog_or_tty and tty, just flush their output
927 if (gclog_or_tty) gclog_or_tty->flush();
928 if (tty) tty->flush();
929
930 if (defaultStream::instance != NULL) {
931 static char buf[4096];
932 defaultStream::instance->finish_log_on_error(buf, sizeof(buf));
933 }
934 }
935
936 staticBufferStream::staticBufferStream(char* buffer, size_t buflen,
937 outputStream *outer_stream) {
938 _buffer = buffer;
939 _buflen = buflen;
940 _outer_stream = outer_stream;
941 // compile task prints time stamp relative to VM start
942 _stamp.update_to(1);
943 }
944
945 void staticBufferStream::write(const char* c, size_t len) {
946 _outer_stream->print_raw(c, (int)len);
947 }
948
949 void staticBufferStream::flush() {
950 _outer_stream->flush();
951 }
952
953 void staticBufferStream::print(const char* format, ...) {
954 va_list ap;
955 va_start(ap, format);
956 size_t len;
957 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, false, len);
958 write(str, len);
959 va_end(ap);
960 }
961
962 void staticBufferStream::print_cr(const char* format, ...) {
963 va_list ap;
964 va_start(ap, format);
965 size_t len;
966 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, true, len);
967 write(str, len);
968 va_end(ap);
969 }
970
971 void staticBufferStream::vprint(const char *format, va_list argptr) {
972 size_t len;
973 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, false, len);
974 write(str, len);
975 }
976
977 void staticBufferStream::vprint_cr(const char* format, va_list argptr) {
978 size_t len;
979 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, true, len);
980 write(str, len);
981 }
982
983 bufferedStream::bufferedStream(size_t initial_size, size_t bufmax) : outputStream() {
984 buffer_length = initial_size;
985 buffer = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal);
986 buffer_pos = 0;
987 buffer_fixed = false;
988 buffer_max = bufmax;
989 }
990
991 bufferedStream::bufferedStream(char* fixed_buffer, size_t fixed_buffer_size, size_t bufmax) : outputStream() {
992 buffer_length = fixed_buffer_size;
993 buffer = fixed_buffer;
994 buffer_pos = 0;
995 buffer_fixed = true;
996 buffer_max = bufmax;
997 }
998
999 void bufferedStream::write(const char* s, size_t len) {
1000
1001 if(buffer_pos + len > buffer_max) {
1002 flush();
1003 }
1004
1005 size_t end = buffer_pos + len;
1006 if (end >= buffer_length) {
1007 if (buffer_fixed) {
1008 // if buffer cannot resize, silently truncate
1009 len = buffer_length - buffer_pos - 1;
1010 } else {
1011 // For small overruns, double the buffer. For larger ones,
1012 // increase to the requested size.
1013 if (end < buffer_length * 2) {
1014 end = buffer_length * 2;
1015 }
1016 buffer = REALLOC_C_HEAP_ARRAY(char, buffer, end, mtInternal);
1017 buffer_length = end;
1018 }
1019 }
1020 memcpy(buffer + buffer_pos, s, len);
1021 buffer_pos += len;
1022 update_position(s, len);
1023 }
1024
1025 char* bufferedStream::as_string() {
1026 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1);
1027 strncpy(copy, buffer, buffer_pos);
1028 copy[buffer_pos] = 0; // terminating null
1029 return copy;
1030 }
1031
1032 bufferedStream::~bufferedStream() {
1033 if (!buffer_fixed) {
1034 FREE_C_HEAP_ARRAY(char, buffer, mtInternal);
1035 }
1036 }
1037
1038 #ifndef PRODUCT
1039
1040 #if defined(SOLARIS) || defined(LINUX) || defined(_ALLBSD_SOURCE)
1041 #include <sys/types.h>
1042 #include <sys/socket.h>
1043 #include <netinet/in.h>
1044 #include <arpa/inet.h>
1045 #endif
1046
1047 // Network access
1048 networkStream::networkStream() : bufferedStream(1024*10, 1024*10) {
1049
1050 _socket = -1;
1051
1052 int result = os::socket(AF_INET, SOCK_STREAM, 0);
1053 if (result <= 0) {
1054 assert(false, "Socket could not be created!");
1055 } else {
1056 _socket = result;
1057 }
1058 }
1059
1060 int networkStream::read(char *buf, size_t len) {
1061 return os::recv(_socket, buf, (int)len, 0);
1062 }
1063
1064 void networkStream::flush() {
1065 if (size() != 0) {
1066 int result = os::raw_send(_socket, (char *)base(), size(), 0);
1067 assert(result != -1, "connection error");
1068 assert(result == (int)size(), "didn't send enough data");
1069 }
1070 reset();
1071 }
1072
1073 networkStream::~networkStream() {
1074 close();
1075 }
1076
1077 void networkStream::close() {
1078 if (_socket != -1) {
1079 flush();
1080 os::socket_close(_socket);
1081 _socket = -1;
1082 }
1083 }
1084
1085 bool networkStream::connect(const char *ip, short port) {
1086
1087 struct sockaddr_in server;
1088 server.sin_family = AF_INET;
1089 server.sin_port = htons(port);
1090
1091 server.sin_addr.s_addr = inet_addr(ip);
1092 if (server.sin_addr.s_addr == (uint32_t)-1) {
1093 struct hostent* host = os::get_host_by_name((char*)ip);
1094 if (host != NULL) {
1095 memcpy(&server.sin_addr, host->h_addr_list[0], host->h_length);
1096 } else {
1097 return false;
1098 }
1099 }
1100
1101
1102 int result = os::connect(_socket, (struct sockaddr*)&server, sizeof(struct sockaddr_in));
1103 return (result >= 0);
1104 }
1105
1106 #endif