1 /*
2 * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "compiler/compileLog.hpp"
27 #include "gc/shared/gcId.hpp"
28 #include "gc/shared/gcId.hpp"
29 #include "oops/oop.inline.hpp"
30 #include "runtime/arguments.hpp"
31 #include "runtime/os.hpp"
32 #include "runtime/vm_version.hpp"
33 #include "utilities/defaultStream.hpp"
34 #include "utilities/macros.hpp"
35 #include "utilities/ostream.hpp"
36 #include "utilities/top.hpp"
37 #include "utilities/xmlstream.hpp"
38
39 extern "C" void jio_print(const char* s); // Declarationtion of jvm method
40
41 outputStream::outputStream(int width) {
42 _width = width;
43 _position = 0;
44 _newlines = 0;
45 _precount = 0;
46 _indentation = 0;
47 }
48
49 outputStream::outputStream(int width, bool has_time_stamps) {
50 _width = width;
51 _position = 0;
52 _newlines = 0;
53 _precount = 0;
54 _indentation = 0;
55 if (has_time_stamps) _stamp.update();
56 }
57
58 void outputStream::update_position(const char* s, size_t len) {
59 for (size_t i = 0; i < len; i++) {
60 char ch = s[i];
61 if (ch == '\n') {
62 _newlines += 1;
63 _precount += _position + 1;
64 _position = 0;
65 } else if (ch == '\t') {
66 int tw = 8 - (_position & 7);
67 _position += tw;
68 _precount -= tw-1; // invariant: _precount + _position == total count
69 } else {
70 _position += 1;
71 }
72 }
73 }
74
75 // Execute a vsprintf, using the given buffer if necessary.
76 // Return a pointer to the formatted string.
77 const char* outputStream::do_vsnprintf(char* buffer, size_t buflen,
78 const char* format, va_list ap,
79 bool add_cr,
80 size_t& result_len) {
81 assert(buflen >= 2, "buffer too small");
82
83 const char* result;
84 if (add_cr) buflen--;
85 if (!strchr(format, '%')) {
86 // constant format string
87 result = format;
88 result_len = strlen(result);
89 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate
90 } else if (format[0] == '%' && format[1] == 's' && format[2] == '\0') {
91 // trivial copy-through format string
92 result = va_arg(ap, const char*);
93 result_len = strlen(result);
94 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate
95 } else {
96 // Handle truncation:
97 // posix: upon truncation, vsnprintf returns number of bytes which
98 // would have been written (excluding terminating zero) had the buffer
99 // been large enough
100 // windows: upon truncation, vsnprintf returns -1
101 const int written = vsnprintf(buffer, buflen, format, ap);
102 result = buffer;
103 if (written < (int) buflen && written >= 0) {
104 result_len = written;
105 } else {
106 DEBUG_ONLY(warning("increase O_BUFLEN in ostream.hpp -- output truncated");)
107 result_len = buflen - 1;
108 buffer[result_len] = 0;
109 }
110 }
111 if (add_cr) {
112 if (result != buffer) {
113 memcpy(buffer, result, result_len);
114 result = buffer;
115 }
116 buffer[result_len++] = '\n';
117 buffer[result_len] = 0;
118 }
119 return result;
120 }
121
122 void outputStream::print(const char* format, ...) {
123 char buffer[O_BUFLEN];
124 va_list ap;
125 va_start(ap, format);
126 size_t len;
127 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, false, len);
128 write(str, len);
129 va_end(ap);
130 }
131
132 void outputStream::print_cr(const char* format, ...) {
133 char buffer[O_BUFLEN];
134 va_list ap;
135 va_start(ap, format);
136 size_t len;
137 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, true, len);
138 write(str, len);
139 va_end(ap);
140 }
141
142 void outputStream::vprint(const char *format, va_list argptr) {
143 char buffer[O_BUFLEN];
144 size_t len;
145 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, false, len);
146 write(str, len);
147 }
148
149 void outputStream::vprint_cr(const char* format, va_list argptr) {
150 char buffer[O_BUFLEN];
151 size_t len;
152 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, true, len);
153 write(str, len);
154 }
155
156 void outputStream::fill_to(int col) {
157 int need_fill = col - position();
158 sp(need_fill);
159 }
160
161 void outputStream::move_to(int col, int slop, int min_space) {
162 if (position() >= col + slop)
163 cr();
164 int need_fill = col - position();
165 if (need_fill < min_space)
166 need_fill = min_space;
167 sp(need_fill);
168 }
169
170 void outputStream::put(char ch) {
171 assert(ch != 0, "please fix call site");
172 char buf[] = { ch, '\0' };
173 write(buf, 1);
174 }
175
176 #define SP_USE_TABS false
177
178 void outputStream::sp(int count) {
179 if (count < 0) return;
180 if (SP_USE_TABS && count >= 8) {
181 int target = position() + count;
182 while (count >= 8) {
183 this->write("\t", 1);
184 count -= 8;
185 }
186 count = target - position();
187 }
188 while (count > 0) {
189 int nw = (count > 8) ? 8 : count;
190 this->write(" ", nw);
191 count -= nw;
192 }
193 }
194
195 void outputStream::cr() {
196 this->write("\n", 1);
197 }
198
199 void outputStream::stamp() {
200 if (! _stamp.is_updated()) {
201 _stamp.update(); // start at 0 on first call to stamp()
202 }
203
204 // outputStream::stamp() may get called by ostream_abort(), use snprintf
205 // to avoid allocating large stack buffer in print().
206 char buf[40];
207 jio_snprintf(buf, sizeof(buf), "%.3f", _stamp.seconds());
208 print_raw(buf);
209 }
210
211 void outputStream::stamp(bool guard,
212 const char* prefix,
213 const char* suffix) {
214 if (!guard) {
215 return;
216 }
217 print_raw(prefix);
218 stamp();
219 print_raw(suffix);
220 }
221
222 void outputStream::date_stamp(bool guard,
223 const char* prefix,
224 const char* suffix) {
225 if (!guard) {
226 return;
227 }
228 print_raw(prefix);
229 static const char error_time[] = "yyyy-mm-ddThh:mm:ss.mmm+zzzz";
230 static const int buffer_length = 32;
231 char buffer[buffer_length];
232 const char* iso8601_result = os::iso8601_time(buffer, buffer_length);
233 if (iso8601_result != NULL) {
234 print_raw(buffer);
235 } else {
236 print_raw(error_time);
237 }
238 print_raw(suffix);
239 return;
240 }
241
242 outputStream& outputStream::indent() {
243 while (_position < _indentation) sp();
244 return *this;
245 }
246
247 void outputStream::print_jlong(jlong value) {
248 print(JLONG_FORMAT, value);
249 }
250
251 void outputStream::print_julong(julong value) {
252 print(JULONG_FORMAT, 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(INTPTR_FORMAT_W(07) ":", 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 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 DEBUG_ONLY(rm = Thread::current()->current_resource_mark();)
302 }
303
304 // useful for output to fixed chunks of memory, such as performance counters
305 stringStream::stringStream(char* fixed_buffer, size_t fixed_buffer_size) : outputStream() {
306 buffer_length = fixed_buffer_size;
307 buffer = fixed_buffer;
308 buffer_pos = 0;
309 buffer_fixed = true;
310 }
311
312 void stringStream::write(const char* s, size_t len) {
313 size_t write_len = len; // number of non-null bytes to write
314 size_t end = buffer_pos + len + 1; // position after write and final '\0'
315 if (end > buffer_length) {
316 if (buffer_fixed) {
317 // if buffer cannot resize, silently truncate
318 end = buffer_length;
319 write_len = end - buffer_pos - 1; // leave room for the final '\0'
320 } else {
321 // For small overruns, double the buffer. For larger ones,
322 // increase to the requested size.
323 if (end < buffer_length * 2) {
324 end = buffer_length * 2;
325 }
326 char* oldbuf = buffer;
327 assert(rm == NULL || Thread::current()->current_resource_mark() == rm,
328 "stringStream is re-allocated with a different ResourceMark");
329 buffer = NEW_RESOURCE_ARRAY(char, end);
330 if (buffer_pos > 0) {
331 memcpy(buffer, oldbuf, buffer_pos);
332 }
333 buffer_length = end;
334 }
335 }
336 // invariant: buffer is always null-terminated
337 guarantee(buffer_pos + write_len + 1 <= buffer_length, "stringStream oob");
338 if (write_len > 0) {
339 buffer[buffer_pos + write_len] = 0;
340 memcpy(buffer + buffer_pos, s, write_len);
341 buffer_pos += write_len;
342 }
343
344 // Note that the following does not depend on write_len.
345 // This means that position and count get updated
346 // even when overflow occurs.
347 update_position(s, len);
348 }
349
350 char* stringStream::as_string() {
351 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos + 1);
352 strncpy(copy, buffer, buffer_pos);
353 copy[buffer_pos] = 0; // terminating null
354 return copy;
355 }
356
357 stringStream::~stringStream() {}
358
359 xmlStream* xtty;
360 outputStream* tty;
361 CDS_ONLY(fileStream* classlist_file;) // Only dump the classes that can be stored into the CDS archive
362 extern Mutex* tty_lock;
363
364 #define EXTRACHARLEN 32
365 #define CURRENTAPPX ".current"
366 // convert YYYY-MM-DD HH:MM:SS to YYYY-MM-DD_HH-MM-SS
367 char* get_datetime_string(char *buf, size_t len) {
368 os::local_time_string(buf, len);
369 int i = (int)strlen(buf);
370 while (i-- >= 0) {
371 if (buf[i] == ' ') buf[i] = '_';
372 else if (buf[i] == ':') buf[i] = '-';
373 }
374 return buf;
375 }
376
377 static const char* make_log_name_internal(const char* log_name, const char* force_directory,
378 int pid, const char* tms) {
379 const char* basename = log_name;
380 char file_sep = os::file_separator()[0];
381 const char* cp;
382 char pid_text[32];
383
384 for (cp = log_name; *cp != '\0'; cp++) {
385 if (*cp == '/' || *cp == file_sep) {
386 basename = cp + 1;
387 }
388 }
389 const char* nametail = log_name;
390 // Compute buffer length
391 size_t buffer_length;
392 if (force_directory != NULL) {
393 buffer_length = strlen(force_directory) + strlen(os::file_separator()) +
394 strlen(basename) + 1;
395 } else {
396 buffer_length = strlen(log_name) + 1;
397 }
398
399 const char* pts = strstr(basename, "%p");
400 int pid_pos = (pts == NULL) ? -1 : (pts - nametail);
401
402 if (pid_pos >= 0) {
403 jio_snprintf(pid_text, sizeof(pid_text), "pid%u", pid);
404 buffer_length += strlen(pid_text);
405 }
406
407 pts = strstr(basename, "%t");
408 int tms_pos = (pts == NULL) ? -1 : (pts - nametail);
409 if (tms_pos >= 0) {
410 buffer_length += strlen(tms);
411 }
412
413 // File name is too long.
414 if (buffer_length > JVM_MAXPATHLEN) {
415 return NULL;
416 }
417
418 // Create big enough buffer.
419 char *buf = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal);
420
421 strcpy(buf, "");
422 if (force_directory != NULL) {
423 strcat(buf, force_directory);
424 strcat(buf, os::file_separator());
425 nametail = basename; // completely skip directory prefix
426 }
427
428 // who is first, %p or %t?
429 int first = -1, second = -1;
430 const char *p1st = NULL;
431 const char *p2nd = NULL;
432
433 if (pid_pos >= 0 && tms_pos >= 0) {
434 // contains both %p and %t
435 if (pid_pos < tms_pos) {
436 // case foo%pbar%tmonkey.log
437 first = pid_pos;
438 p1st = pid_text;
439 second = tms_pos;
440 p2nd = tms;
441 } else {
442 // case foo%tbar%pmonkey.log
443 first = tms_pos;
444 p1st = tms;
445 second = pid_pos;
446 p2nd = pid_text;
447 }
448 } else if (pid_pos >= 0) {
449 // contains %p only
450 first = pid_pos;
451 p1st = pid_text;
452 } else if (tms_pos >= 0) {
453 // contains %t only
454 first = tms_pos;
455 p1st = tms;
456 }
457
458 int buf_pos = (int)strlen(buf);
459 const char* tail = nametail;
460
461 if (first >= 0) {
462 tail = nametail + first + 2;
463 strncpy(&buf[buf_pos], nametail, first);
464 strcpy(&buf[buf_pos + first], p1st);
465 buf_pos = (int)strlen(buf);
466 if (second >= 0) {
467 strncpy(&buf[buf_pos], tail, second - first - 2);
468 strcpy(&buf[buf_pos + second - first - 2], p2nd);
469 tail = nametail + second + 2;
470 }
471 }
472 strcat(buf, tail); // append rest of name, or all of name
473 return buf;
474 }
475
476 // log_name comes from -XX:LogFile=log_name or
477 // -XX:DumpLoadedClassList=<file_name>
478 // in log_name, %p => pid1234 and
479 // %t => YYYY-MM-DD_HH-MM-SS
480 static const char* make_log_name(const char* log_name, const char* force_directory) {
481 char timestr[32];
482 get_datetime_string(timestr, sizeof(timestr));
483 return make_log_name_internal(log_name, force_directory, os::current_process_id(),
484 timestr);
485 }
486
487 fileStream::fileStream(const char* file_name) {
488 _file = fopen(file_name, "w");
489 if (_file != NULL) {
490 _need_close = true;
491 } else {
492 warning("Cannot open file %s due to %s\n", file_name, strerror(errno));
493 _need_close = false;
494 }
495 }
496
497 fileStream::fileStream(const char* file_name, const char* opentype) {
498 _file = fopen(file_name, opentype);
499 if (_file != NULL) {
500 _need_close = true;
501 } else {
502 warning("Cannot open file %s due to %s\n", file_name, strerror(errno));
503 _need_close = false;
504 }
505 }
506
507 void fileStream::write(const char* s, size_t len) {
508 if (_file != NULL) {
509 // Make an unused local variable to avoid warning from gcc 4.x compiler.
510 size_t count = fwrite(s, 1, len, _file);
511 }
512 update_position(s, len);
513 }
514
515 long fileStream::fileSize() {
516 long size = -1;
517 if (_file != NULL) {
518 long pos = ::ftell(_file);
519 if (::fseek(_file, 0, SEEK_END) == 0) {
520 size = ::ftell(_file);
521 }
522 ::fseek(_file, pos, SEEK_SET);
523 }
524 return size;
525 }
526
527 char* fileStream::readln(char *data, int count ) {
528 char * ret = ::fgets(data, count, _file);
529 //Get rid of annoying \n char
530 data[::strlen(data)-1] = '\0';
531 return ret;
532 }
533
534 fileStream::~fileStream() {
535 if (_file != NULL) {
536 if (_need_close) fclose(_file);
537 _file = NULL;
538 }
539 }
540
541 void fileStream::flush() {
542 fflush(_file);
543 }
544
545 fdStream::fdStream(const char* file_name) {
546 _fd = open(file_name, O_WRONLY | O_CREAT | O_TRUNC, 0666);
547 _need_close = true;
548 }
549
550 fdStream::~fdStream() {
551 if (_fd != -1) {
552 if (_need_close) close(_fd);
553 _fd = -1;
554 }
555 }
556
557 void fdStream::write(const char* s, size_t len) {
558 if (_fd != -1) {
559 // Make an unused local variable to avoid warning from gcc 4.x compiler.
560 size_t count = ::write(_fd, s, (int)len);
561 }
562 update_position(s, len);
563 }
564
565 defaultStream* defaultStream::instance = NULL;
566 int defaultStream::_output_fd = 1;
567 int defaultStream::_error_fd = 2;
568 FILE* defaultStream::_output_stream = stdout;
569 FILE* defaultStream::_error_stream = stderr;
570
571 #define LOG_MAJOR_VERSION 160
572 #define LOG_MINOR_VERSION 1
573
574 void defaultStream::init() {
575 _inited = true;
576 if (LogVMOutput || LogCompilation) {
577 init_log();
578 }
579 }
580
581 bool defaultStream::has_log_file() {
582 // lazily create log file (at startup, LogVMOutput is false even
583 // if +LogVMOutput is used, because the flags haven't been parsed yet)
584 // For safer printing during fatal error handling, do not init logfile
585 // if a VM error has been reported.
586 if (!_inited && !is_error_reported()) init();
587 return _log_file != NULL;
588 }
589
590 fileStream* defaultStream::open_file(const char* log_name) {
591 const char* try_name = make_log_name(log_name, NULL);
592 if (try_name == NULL) {
593 warning("Cannot open file %s: file name is too long.\n", log_name);
594 return NULL;
595 }
596
597 fileStream* file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name);
598 FREE_C_HEAP_ARRAY(char, try_name);
599 if (file->is_open()) {
600 return file;
601 }
602
603 // Try again to open the file in the temp directory.
604 delete file;
605 char warnbuf[O_BUFLEN*2];
606 jio_snprintf(warnbuf, sizeof(warnbuf), "Warning: Cannot open log file: %s\n", log_name);
607 // Note: This feature is for maintainer use only. No need for L10N.
608 jio_print(warnbuf);
609 try_name = make_log_name(log_name, os::get_temp_directory());
610 if (try_name == NULL) {
611 warning("Cannot open file %s: file name is too long for directory %s.\n", log_name, os::get_temp_directory());
612 return NULL;
613 }
614
615 jio_snprintf(warnbuf, sizeof(warnbuf),
616 "Warning: Forcing option -XX:LogFile=%s\n", try_name);
617 jio_print(warnbuf);
618
619 file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name);
620 FREE_C_HEAP_ARRAY(char, try_name);
621 if (file->is_open()) {
622 return file;
623 }
624
625 delete file;
626 return NULL;
627 }
628
629 void defaultStream::init_log() {
630 // %%% Need a MutexLocker?
631 const char* log_name = LogFile != NULL ? LogFile : "hotspot_%p.log";
632 fileStream* file = open_file(log_name);
633
634 if (file != NULL) {
635 _log_file = file;
636 _outer_xmlStream = new(ResourceObj::C_HEAP, mtInternal) xmlStream(file);
637 start_log();
638 } else {
639 // and leave xtty as NULL
640 LogVMOutput = false;
641 DisplayVMOutput = true;
642 LogCompilation = false;
643 }
644 }
645
646 void defaultStream::start_log() {
647 xmlStream*xs = _outer_xmlStream;
648 if (this == tty) xtty = xs;
649 // Write XML header.
650 xs->print_cr("<?xml version='1.0' encoding='UTF-8'?>");
651 // (For now, don't bother to issue a DTD for this private format.)
652 jlong time_ms = os::javaTimeMillis() - tty->time_stamp().milliseconds();
653 // %%% Should be: jlong time_ms = os::start_time_milliseconds(), if
654 // we ever get round to introduce that method on the os class
655 xs->head("hotspot_log version='%d %d'"
656 " process='%d' time_ms='" INT64_FORMAT "'",
657 LOG_MAJOR_VERSION, LOG_MINOR_VERSION,
658 os::current_process_id(), (int64_t)time_ms);
659 // Write VM version header immediately.
660 xs->head("vm_version");
661 xs->head("name"); xs->text("%s", VM_Version::vm_name()); xs->cr();
662 xs->tail("name");
663 xs->head("release"); xs->text("%s", VM_Version::vm_release()); xs->cr();
664 xs->tail("release");
665 xs->head("info"); xs->text("%s", VM_Version::internal_vm_info_string()); xs->cr();
666 xs->tail("info");
667 xs->tail("vm_version");
668 // Record information about the command-line invocation.
669 xs->head("vm_arguments"); // Cf. Arguments::print_on()
670 if (Arguments::num_jvm_flags() > 0) {
671 xs->head("flags");
672 Arguments::print_jvm_flags_on(xs->text());
673 xs->tail("flags");
674 }
675 if (Arguments::num_jvm_args() > 0) {
676 xs->head("args");
677 Arguments::print_jvm_args_on(xs->text());
678 xs->tail("args");
679 }
680 if (Arguments::java_command() != NULL) {
681 xs->head("command"); xs->text()->print_cr("%s", Arguments::java_command());
682 xs->tail("command");
683 }
684 if (Arguments::sun_java_launcher() != NULL) {
685 xs->head("launcher"); xs->text()->print_cr("%s", Arguments::sun_java_launcher());
686 xs->tail("launcher");
687 }
688 if (Arguments::system_properties() != NULL) {
689 xs->head("properties");
690 // Print it as a java-style property list.
691 // System properties don't generally contain newlines, so don't bother with unparsing.
692 outputStream *text = xs->text();
693 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) {
694 // Print in two stages to avoid problems with long
695 // keys/values.
696 text->print_raw(p->key());
697 text->put('=');
698 text->print_raw_cr(p->value());
699 }
700 xs->tail("properties");
701 }
702 xs->tail("vm_arguments");
703 // tty output per se is grouped under the <tty>...</tty> element.
704 xs->head("tty");
705 // All further non-markup text gets copied to the tty:
706 xs->_text = this; // requires friend declaration!
707 }
708
709 // finish_log() is called during normal VM shutdown. finish_log_on_error() is
710 // called by ostream_abort() after a fatal error.
711 //
712 void defaultStream::finish_log() {
713 xmlStream* xs = _outer_xmlStream;
714 xs->done("tty");
715
716 // Other log forks are appended here, at the End of Time:
717 CompileLog::finish_log(xs->out()); // write compile logging, if any, now
718
719 xs->done("hotspot_log");
720 xs->flush();
721
722 fileStream* file = _log_file;
723 _log_file = NULL;
724
725 delete _outer_xmlStream;
726 _outer_xmlStream = NULL;
727
728 file->flush();
729 delete file;
730 }
731
732 void defaultStream::finish_log_on_error(char *buf, int buflen) {
733 xmlStream* xs = _outer_xmlStream;
734
735 if (xs && xs->out()) {
736
737 xs->done_raw("tty");
738
739 // Other log forks are appended here, at the End of Time:
740 CompileLog::finish_log_on_error(xs->out(), buf, buflen); // write compile logging, if any, now
741
742 xs->done_raw("hotspot_log");
743 xs->flush();
744
745 fileStream* file = _log_file;
746 _log_file = NULL;
747 _outer_xmlStream = NULL;
748
749 if (file) {
750 file->flush();
751
752 // Can't delete or close the file because delete and fclose aren't
753 // async-safe. We are about to die, so leave it to the kernel.
754 // delete file;
755 }
756 }
757 }
758
759 intx defaultStream::hold(intx writer_id) {
760 bool has_log = has_log_file(); // check before locking
761 if (// impossible, but who knows?
762 writer_id == NO_WRITER ||
763
764 // bootstrap problem
765 tty_lock == NULL ||
766
767 // can't grab a lock if current Thread isn't set
768 Thread::current_or_null() == NULL ||
769
770 // developer hook
771 !SerializeVMOutput ||
772
773 // VM already unhealthy
774 is_error_reported() ||
775
776 // safepoint == global lock (for VM only)
777 (SafepointSynchronize::is_synchronizing() &&
778 Thread::current()->is_VM_thread())
779 ) {
780 // do not attempt to lock unless we know the thread and the VM is healthy
781 return NO_WRITER;
782 }
783 if (_writer == writer_id) {
784 // already held, no need to re-grab the lock
785 return NO_WRITER;
786 }
787 tty_lock->lock_without_safepoint_check();
788 // got the lock
789 if (writer_id != _last_writer) {
790 if (has_log) {
791 _log_file->bol();
792 // output a hint where this output is coming from:
793 _log_file->print_cr("<writer thread='" UINTX_FORMAT "'/>", writer_id);
794 }
795 _last_writer = writer_id;
796 }
797 _writer = writer_id;
798 return writer_id;
799 }
800
801 void defaultStream::release(intx holder) {
802 if (holder == NO_WRITER) {
803 // nothing to release: either a recursive lock, or we scribbled (too bad)
804 return;
805 }
806 if (_writer != holder) {
807 return; // already unlocked, perhaps via break_tty_lock_for_safepoint
808 }
809 _writer = NO_WRITER;
810 tty_lock->unlock();
811 }
812
813
814 // Yuck: jio_print does not accept char*/len.
815 static void call_jio_print(const char* s, size_t len) {
816 char buffer[O_BUFLEN+100];
817 if (len > sizeof(buffer)-1) {
818 warning("increase O_BUFLEN in ostream.cpp -- output truncated");
819 len = sizeof(buffer)-1;
820 }
821 strncpy(buffer, s, len);
822 buffer[len] = '\0';
823 jio_print(buffer);
824 }
825
826
827 void defaultStream::write(const char* s, size_t len) {
828 intx thread_id = os::current_thread_id();
829 intx holder = hold(thread_id);
830
831 if (DisplayVMOutput &&
832 (_outer_xmlStream == NULL || !_outer_xmlStream->inside_attrs())) {
833 // print to output stream. It can be redirected by a vfprintf hook
834 if (s[len] == '\0') {
835 jio_print(s);
836 } else {
837 call_jio_print(s, len);
838 }
839 }
840
841 // print to log file
842 if (has_log_file()) {
843 int nl0 = _newlines;
844 xmlTextStream::write(s, len);
845 // flush the log file too, if there were any newlines
846 if (nl0 != _newlines){
847 flush();
848 }
849 } else {
850 update_position(s, len);
851 }
852
853 release(holder);
854 }
855
856 intx ttyLocker::hold_tty() {
857 if (defaultStream::instance == NULL) return defaultStream::NO_WRITER;
858 intx thread_id = os::current_thread_id();
859 return defaultStream::instance->hold(thread_id);
860 }
861
862 void ttyLocker::release_tty(intx holder) {
863 if (holder == defaultStream::NO_WRITER) return;
864 defaultStream::instance->release(holder);
865 }
866
867 bool ttyLocker::release_tty_if_locked() {
868 intx thread_id = os::current_thread_id();
869 if (defaultStream::instance->writer() == thread_id) {
870 // release the lock and return true so callers know if was
871 // previously held.
872 release_tty(thread_id);
873 return true;
874 }
875 return false;
876 }
877
878 void ttyLocker::break_tty_lock_for_safepoint(intx holder) {
879 if (defaultStream::instance != NULL &&
880 defaultStream::instance->writer() == holder) {
881 if (xtty != NULL) {
882 xtty->print_cr("<!-- safepoint while printing -->");
883 }
884 defaultStream::instance->release(holder);
885 }
886 // (else there was no lock to break)
887 }
888
889 void ostream_init() {
890 if (defaultStream::instance == NULL) {
891 defaultStream::instance = new(ResourceObj::C_HEAP, mtInternal) defaultStream();
892 tty = defaultStream::instance;
893
894 // We want to ensure that time stamps in GC logs consider time 0
895 // the time when the JVM is initialized, not the first time we ask
896 // for a time stamp. So, here, we explicitly update the time stamp
897 // of tty.
898 tty->time_stamp().update_to(1);
899 }
900 }
901
902 void ostream_init_log() {
903 // Note : this must be called AFTER ostream_init()
904
905 #if INCLUDE_CDS
906 // For -XX:DumpLoadedClassList=<file> option
907 if (DumpLoadedClassList != NULL) {
908 const char* list_name = make_log_name(DumpLoadedClassList, NULL);
909 classlist_file = new(ResourceObj::C_HEAP, mtInternal)
910 fileStream(list_name);
911 FREE_C_HEAP_ARRAY(char, list_name);
912 }
913 #endif
914
915 // If we haven't lazily initialized the logfile yet, do it now,
916 // to avoid the possibility of lazy initialization during a VM
917 // crash, which can affect the stability of the fatal error handler.
918 defaultStream::instance->has_log_file();
919 }
920
921 // ostream_exit() is called during normal VM exit to finish log files, flush
922 // output and free resource.
923 void ostream_exit() {
924 static bool ostream_exit_called = false;
925 if (ostream_exit_called) return;
926 ostream_exit_called = true;
927 #if INCLUDE_CDS
928 if (classlist_file != NULL) {
929 delete classlist_file;
930 }
931 #endif
932 {
933 // we temporaly disable PrintMallocFree here
934 // as otherwise it'll lead to using of almost deleted
935 // tty or defaultStream::instance in logging facility
936 // of HeapFree(), see 6391258
937 DEBUG_ONLY(FlagSetting fs(PrintMallocFree, false);)
938 if (tty != defaultStream::instance) {
939 delete tty;
940 }
941 if (defaultStream::instance != NULL) {
942 delete defaultStream::instance;
943 }
944 }
945 tty = NULL;
946 xtty = NULL;
947 defaultStream::instance = NULL;
948 }
949
950 // ostream_abort() is called by os::abort() when VM is about to die.
951 void ostream_abort() {
952 // Here we can't delete tty, just flush its output
953 if (tty) tty->flush();
954
955 if (defaultStream::instance != NULL) {
956 static char buf[4096];
957 defaultStream::instance->finish_log_on_error(buf, sizeof(buf));
958 }
959 }
960
961 staticBufferStream::staticBufferStream(char* buffer, size_t buflen,
962 outputStream *outer_stream) {
963 _buffer = buffer;
964 _buflen = buflen;
965 _outer_stream = outer_stream;
966 // compile task prints time stamp relative to VM start
967 _stamp.update_to(1);
968 }
969
970 void staticBufferStream::write(const char* c, size_t len) {
971 _outer_stream->print_raw(c, (int)len);
972 }
973
974 void staticBufferStream::flush() {
975 _outer_stream->flush();
976 }
977
978 void staticBufferStream::print(const char* format, ...) {
979 va_list ap;
980 va_start(ap, format);
981 size_t len;
982 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, false, len);
983 write(str, len);
984 va_end(ap);
985 }
986
987 void staticBufferStream::print_cr(const char* format, ...) {
988 va_list ap;
989 va_start(ap, format);
990 size_t len;
991 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, true, len);
992 write(str, len);
993 va_end(ap);
994 }
995
996 void staticBufferStream::vprint(const char *format, va_list argptr) {
997 size_t len;
998 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, false, len);
999 write(str, len);
1000 }
1001
1002 void staticBufferStream::vprint_cr(const char* format, va_list argptr) {
1003 size_t len;
1004 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, true, len);
1005 write(str, len);
1006 }
1007
1008 bufferedStream::bufferedStream(size_t initial_size, size_t bufmax) : outputStream() {
1009 buffer_length = initial_size;
1010 buffer = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal);
1011 buffer_pos = 0;
1012 buffer_fixed = false;
1013 buffer_max = bufmax;
1014 }
1015
1016 bufferedStream::bufferedStream(char* fixed_buffer, size_t fixed_buffer_size, size_t bufmax) : outputStream() {
1017 buffer_length = fixed_buffer_size;
1018 buffer = fixed_buffer;
1019 buffer_pos = 0;
1020 buffer_fixed = true;
1021 buffer_max = bufmax;
1022 }
1023
1024 void bufferedStream::write(const char* s, size_t len) {
1025
1026 if(buffer_pos + len > buffer_max) {
1027 flush();
1028 }
1029
1030 size_t end = buffer_pos + len;
1031 if (end >= buffer_length) {
1032 if (buffer_fixed) {
1033 // if buffer cannot resize, silently truncate
1034 len = buffer_length - buffer_pos - 1;
1035 } else {
1036 // For small overruns, double the buffer. For larger ones,
1037 // increase to the requested size.
1038 if (end < buffer_length * 2) {
1039 end = buffer_length * 2;
1040 }
1041 buffer = REALLOC_C_HEAP_ARRAY(char, buffer, end, mtInternal);
1042 buffer_length = end;
1043 }
1044 }
1045 memcpy(buffer + buffer_pos, s, len);
1046 buffer_pos += len;
1047 update_position(s, len);
1048 }
1049
1050 char* bufferedStream::as_string() {
1051 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1);
1052 strncpy(copy, buffer, buffer_pos);
1053 copy[buffer_pos] = 0; // terminating null
1054 return copy;
1055 }
1056
1057 bufferedStream::~bufferedStream() {
1058 if (!buffer_fixed) {
1059 FREE_C_HEAP_ARRAY(char, buffer);
1060 }
1061 }
1062
1063 #ifndef PRODUCT
1064
1065 #if defined(SOLARIS) || defined(LINUX) || defined(AIX) || defined(_ALLBSD_SOURCE)
1066 #include <sys/types.h>
1067 #include <sys/socket.h>
1068 #include <netinet/in.h>
1069 #include <arpa/inet.h>
1070 #endif
1071
1072 // Network access
1073 networkStream::networkStream() : bufferedStream(1024*10, 1024*10) {
1074
1075 _socket = -1;
1076
1077 int result = os::socket(AF_INET, SOCK_STREAM, 0);
1078 if (result <= 0) {
1079 assert(false, "Socket could not be created!");
1080 } else {
1081 _socket = result;
1082 }
1083 }
1084
1085 int networkStream::read(char *buf, size_t len) {
1086 return os::recv(_socket, buf, (int)len, 0);
1087 }
1088
1089 void networkStream::flush() {
1090 if (size() != 0) {
1091 int result = os::raw_send(_socket, (char *)base(), size(), 0);
1092 assert(result != -1, "connection error");
1093 assert(result == (int)size(), "didn't send enough data");
1094 }
1095 reset();
1096 }
1097
1098 networkStream::~networkStream() {
1099 close();
1100 }
1101
1102 void networkStream::close() {
1103 if (_socket != -1) {
1104 flush();
1105 os::socket_close(_socket);
1106 _socket = -1;
1107 }
1108 }
1109
1110 bool networkStream::connect(const char *ip, short port) {
1111
1112 struct sockaddr_in server;
1113 server.sin_family = AF_INET;
1114 server.sin_port = htons(port);
1115
1116 server.sin_addr.s_addr = inet_addr(ip);
1117 if (server.sin_addr.s_addr == (uint32_t)-1) {
1118 struct hostent* host = os::get_host_by_name((char*)ip);
1119 if (host != NULL) {
1120 memcpy(&server.sin_addr, host->h_addr_list[0], host->h_length);
1121 } else {
1122 return false;
1123 }
1124 }
1125
1126
1127 int result = os::connect(_socket, (struct sockaddr*)&server, sizeof(struct sockaddr_in));
1128 return (result >= 0);
1129 }
1130
1131 #endif
1132
1133 void logStream::write(const char* s, size_t len) {
1134 if (len > 0 && s[len - 1] == '\n') {
1135 _current_line.write(s, len - 1);
1136 _log_func(_current_line.as_string());
1137 _current_line.reset();
1138 } else {
1139 _current_line.write(s, len);
1140 }
1141 update_position(s, len);
1142 }