Thu, 05 Sep 2013 11:04:39 -0700
Merge
1 /*
2 * Copyright (c) 1997, 2013, 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
42 #ifdef TARGET_OS_FAMILY_aix
43 # include "os_aix.inline.hpp"
44 #endif
45 #ifdef TARGET_OS_FAMILY_bsd
46 # include "os_bsd.inline.hpp"
47 #endif
49 extern "C" void jio_print(const char* s); // Declarationtion of jvm method
51 outputStream::outputStream(int width) {
52 _width = width;
53 _position = 0;
54 _newlines = 0;
55 _precount = 0;
56 _indentation = 0;
57 }
59 outputStream::outputStream(int width, bool has_time_stamps) {
60 _width = width;
61 _position = 0;
62 _newlines = 0;
63 _precount = 0;
64 _indentation = 0;
65 if (has_time_stamps) _stamp.update();
66 }
68 void outputStream::update_position(const char* s, size_t len) {
69 for (size_t i = 0; i < len; i++) {
70 char ch = s[i];
71 if (ch == '\n') {
72 _newlines += 1;
73 _precount += _position + 1;
74 _position = 0;
75 } else if (ch == '\t') {
76 int tw = 8 - (_position & 7);
77 _position += tw;
78 _precount -= tw-1; // invariant: _precount + _position == total count
79 } else {
80 _position += 1;
81 }
82 }
83 }
85 // Execute a vsprintf, using the given buffer if necessary.
86 // Return a pointer to the formatted string.
87 const char* outputStream::do_vsnprintf(char* buffer, size_t buflen,
88 const char* format, va_list ap,
89 bool add_cr,
90 size_t& result_len) {
91 const char* result;
92 if (add_cr) buflen--;
93 if (!strchr(format, '%')) {
94 // constant format string
95 result = format;
96 result_len = strlen(result);
97 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate
98 } else if (format[0] == '%' && format[1] == 's' && format[2] == '\0') {
99 // trivial copy-through format string
100 result = va_arg(ap, const char*);
101 result_len = strlen(result);
102 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate
103 } else if (vsnprintf(buffer, buflen, format, ap) >= 0) {
104 result = buffer;
105 result_len = strlen(result);
106 } else {
107 DEBUG_ONLY(warning("increase O_BUFLEN in ostream.hpp -- output truncated");)
108 result = buffer;
109 result_len = buflen - 1;
110 buffer[result_len] = 0;
111 }
112 if (add_cr) {
113 if (result != buffer) {
114 strncpy(buffer, result, buflen);
115 result = buffer;
116 }
117 buffer[result_len++] = '\n';
118 buffer[result_len] = 0;
119 }
120 return result;
121 }
123 void outputStream::print(const char* format, ...) {
124 char buffer[O_BUFLEN];
125 va_list ap;
126 va_start(ap, format);
127 size_t len;
128 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, false, len);
129 write(str, len);
130 va_end(ap);
131 }
133 void outputStream::print_cr(const char* format, ...) {
134 char buffer[O_BUFLEN];
135 va_list ap;
136 va_start(ap, format);
137 size_t len;
138 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, true, len);
139 write(str, len);
140 va_end(ap);
141 }
143 void outputStream::vprint(const char *format, va_list argptr) {
144 char buffer[O_BUFLEN];
145 size_t len;
146 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, false, len);
147 write(str, len);
148 }
150 void outputStream::vprint_cr(const char* format, va_list argptr) {
151 char buffer[O_BUFLEN];
152 size_t len;
153 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, true, len);
154 write(str, len);
155 }
157 void outputStream::fill_to(int col) {
158 int need_fill = col - position();
159 sp(need_fill);
160 }
162 void outputStream::move_to(int col, int slop, int min_space) {
163 if (position() >= col + slop)
164 cr();
165 int need_fill = col - position();
166 if (need_fill < min_space)
167 need_fill = min_space;
168 sp(need_fill);
169 }
171 void outputStream::put(char ch) {
172 assert(ch != 0, "please fix call site");
173 char buf[] = { ch, '\0' };
174 write(buf, 1);
175 }
177 #define SP_USE_TABS false
179 void outputStream::sp(int count) {
180 if (count < 0) return;
181 if (SP_USE_TABS && count >= 8) {
182 int target = position() + count;
183 while (count >= 8) {
184 this->write("\t", 1);
185 count -= 8;
186 }
187 count = target - position();
188 }
189 while (count > 0) {
190 int nw = (count > 8) ? 8 : count;
191 this->write(" ", nw);
192 count -= nw;
193 }
194 }
196 void outputStream::cr() {
197 this->write("\n", 1);
198 }
200 void outputStream::stamp() {
201 if (! _stamp.is_updated()) {
202 _stamp.update(); // start at 0 on first call to stamp()
203 }
205 // outputStream::stamp() may get called by ostream_abort(), use snprintf
206 // to avoid allocating large stack buffer in print().
207 char buf[40];
208 jio_snprintf(buf, sizeof(buf), "%.3f", _stamp.seconds());
209 print_raw(buf);
210 }
212 void outputStream::stamp(bool guard,
213 const char* prefix,
214 const char* suffix) {
215 if (!guard) {
216 return;
217 }
218 print_raw(prefix);
219 stamp();
220 print_raw(suffix);
221 }
223 void outputStream::date_stamp(bool guard,
224 const char* prefix,
225 const char* suffix) {
226 if (!guard) {
227 return;
228 }
229 print_raw(prefix);
230 static const char error_time[] = "yyyy-mm-ddThh:mm:ss.mmm+zzzz";
231 static const int buffer_length = 32;
232 char buffer[buffer_length];
233 const char* iso8601_result = os::iso8601_time(buffer, buffer_length);
234 if (iso8601_result != NULL) {
235 print_raw(buffer);
236 } else {
237 print_raw(error_time);
238 }
239 print_raw(suffix);
240 return;
241 }
243 outputStream& outputStream::indent() {
244 while (_position < _indentation) sp();
245 return *this;
246 }
248 void outputStream::print_jlong(jlong value) {
249 print(JLONG_FORMAT, value);
250 }
252 void outputStream::print_julong(julong value) {
253 print(JULONG_FORMAT, value);
254 }
256 /**
257 * This prints out hex data in a 'windbg' or 'xxd' form, where each line is:
258 * <hex-address>: 8 * <hex-halfword> <ascii translation (optional)>
259 * example:
260 * 0000000: 7f44 4f46 0102 0102 0000 0000 0000 0000 .DOF............
261 * 0000010: 0000 0000 0000 0040 0000 0020 0000 0005 .......@... ....
262 * 0000020: 0000 0000 0000 0040 0000 0000 0000 015d .......@.......]
263 * ...
264 *
265 * indent is applied to each line. Ends with a CR.
266 */
267 void outputStream::print_data(void* data, size_t len, bool with_ascii) {
268 size_t limit = (len + 16) / 16 * 16;
269 for (size_t i = 0; i < limit; ++i) {
270 if (i % 16 == 0) {
271 indent().print("%07x:", i);
272 }
273 if (i % 2 == 0) {
274 print(" ");
275 }
276 if (i < len) {
277 print("%02x", ((unsigned char*)data)[i]);
278 } else {
279 print(" ");
280 }
281 if ((i + 1) % 16 == 0) {
282 if (with_ascii) {
283 print(" ");
284 for (size_t j = 0; j < 16; ++j) {
285 size_t idx = i + j - 15;
286 if (idx < len) {
287 char c = ((char*)data)[idx];
288 print("%c", c >= 32 && c <= 126 ? c : '.');
289 }
290 }
291 }
292 print_cr("");
293 }
294 }
295 }
297 stringStream::stringStream(size_t initial_size) : outputStream() {
298 buffer_length = initial_size;
299 buffer = NEW_RESOURCE_ARRAY(char, buffer_length);
300 buffer_pos = 0;
301 buffer_fixed = false;
302 DEBUG_ONLY(rm = Thread::current()->current_resource_mark();)
303 }
305 // useful for output to fixed chunks of memory, such as performance counters
306 stringStream::stringStream(char* fixed_buffer, size_t fixed_buffer_size) : outputStream() {
307 buffer_length = fixed_buffer_size;
308 buffer = fixed_buffer;
309 buffer_pos = 0;
310 buffer_fixed = true;
311 }
313 void stringStream::write(const char* s, size_t len) {
314 size_t write_len = len; // number of non-null bytes to write
315 size_t end = buffer_pos + len + 1; // position after write and final '\0'
316 if (end > buffer_length) {
317 if (buffer_fixed) {
318 // if buffer cannot resize, silently truncate
319 end = buffer_length;
320 write_len = end - buffer_pos - 1; // leave room for the final '\0'
321 } else {
322 // For small overruns, double the buffer. For larger ones,
323 // increase to the requested size.
324 if (end < buffer_length * 2) {
325 end = buffer_length * 2;
326 }
327 char* oldbuf = buffer;
328 assert(rm == NULL || Thread::current()->current_resource_mark() == rm,
329 "stringStream is re-allocated with a different ResourceMark");
330 buffer = NEW_RESOURCE_ARRAY(char, end);
331 strncpy(buffer, oldbuf, buffer_pos);
332 buffer_length = end;
333 }
334 }
335 // invariant: buffer is always null-terminated
336 guarantee(buffer_pos + write_len + 1 <= buffer_length, "stringStream oob");
337 buffer[buffer_pos + write_len] = 0;
338 strncpy(buffer + buffer_pos, s, write_len);
339 buffer_pos += write_len;
341 // Note that the following does not depend on write_len.
342 // This means that position and count get updated
343 // even when overflow occurs.
344 update_position(s, len);
345 }
347 char* stringStream::as_string() {
348 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1);
349 strncpy(copy, buffer, buffer_pos);
350 copy[buffer_pos] = 0; // terminating null
351 return copy;
352 }
354 stringStream::~stringStream() {}
356 xmlStream* xtty;
357 outputStream* tty;
358 outputStream* gclog_or_tty;
359 extern Mutex* tty_lock;
361 fileStream::fileStream(const char* file_name) {
362 _file = fopen(file_name, "w");
363 _need_close = true;
364 }
366 fileStream::fileStream(const char* file_name, const char* opentype) {
367 _file = fopen(file_name, opentype);
368 _need_close = true;
369 }
371 void fileStream::write(const char* s, size_t len) {
372 if (_file != NULL) {
373 // Make an unused local variable to avoid warning from gcc 4.x compiler.
374 size_t count = fwrite(s, 1, len, _file);
375 }
376 update_position(s, len);
377 }
379 long fileStream::fileSize() {
380 long size = -1;
381 if (_file != NULL) {
382 long pos = ::ftell(_file);
383 if (::fseek(_file, 0, SEEK_END) == 0) {
384 size = ::ftell(_file);
385 }
386 ::fseek(_file, pos, SEEK_SET);
387 }
388 return size;
389 }
391 char* fileStream::readln(char *data, int count ) {
392 char * ret = ::fgets(data, count, _file);
393 //Get rid of annoying \n char
394 data[::strlen(data)-1] = '\0';
395 return ret;
396 }
398 fileStream::~fileStream() {
399 if (_file != NULL) {
400 if (_need_close) fclose(_file);
401 _file = NULL;
402 }
403 }
405 void fileStream::flush() {
406 fflush(_file);
407 }
409 fdStream::fdStream(const char* file_name) {
410 _fd = open(file_name, O_WRONLY | O_CREAT | O_TRUNC, 0666);
411 _need_close = true;
412 }
414 fdStream::~fdStream() {
415 if (_fd != -1) {
416 if (_need_close) close(_fd);
417 _fd = -1;
418 }
419 }
421 void fdStream::write(const char* s, size_t len) {
422 if (_fd != -1) {
423 // Make an unused local variable to avoid warning from gcc 4.x compiler.
424 size_t count = ::write(_fd, s, (int)len);
425 }
426 update_position(s, len);
427 }
429 rotatingFileStream::~rotatingFileStream() {
430 if (_file != NULL) {
431 if (_need_close) fclose(_file);
432 _file = NULL;
433 FREE_C_HEAP_ARRAY(char, _file_name, mtInternal);
434 _file_name = NULL;
435 }
436 }
438 rotatingFileStream::rotatingFileStream(const char* file_name) {
439 _cur_file_num = 0;
440 _bytes_written = 0L;
441 _file_name = NEW_C_HEAP_ARRAY(char, strlen(file_name)+10, mtInternal);
442 jio_snprintf(_file_name, strlen(file_name)+10, "%s.%d", file_name, _cur_file_num);
443 _file = fopen(_file_name, "w");
444 _need_close = true;
445 }
447 rotatingFileStream::rotatingFileStream(const char* file_name, const char* opentype) {
448 _cur_file_num = 0;
449 _bytes_written = 0L;
450 _file_name = NEW_C_HEAP_ARRAY(char, strlen(file_name)+10, mtInternal);
451 jio_snprintf(_file_name, strlen(file_name)+10, "%s.%d", file_name, _cur_file_num);
452 _file = fopen(_file_name, opentype);
453 _need_close = true;
454 }
456 void rotatingFileStream::write(const char* s, size_t len) {
457 if (_file != NULL) {
458 size_t count = fwrite(s, 1, len, _file);
459 _bytes_written += count;
460 }
461 update_position(s, len);
462 }
464 // rotate_log must be called from VMThread at safepoint. In case need change parameters
465 // for gc log rotation from thread other than VMThread, a sub type of VM_Operation
466 // should be created and be submitted to VMThread's operation queue. DO NOT call this
467 // function directly. Currently, it is safe to rotate log at safepoint through VMThread.
468 // That is, no mutator threads and concurrent GC threads run parallel with VMThread to
469 // write to gc log file at safepoint. If in future, changes made for mutator threads or
470 // concurrent GC threads to run parallel with VMThread at safepoint, write and rotate_log
471 // must be synchronized.
472 void rotatingFileStream::rotate_log() {
473 if (_bytes_written < (jlong)GCLogFileSize) {
474 return;
475 }
477 #ifdef ASSERT
478 Thread *thread = Thread::current();
479 assert(thread == NULL ||
480 (thread->is_VM_thread() && SafepointSynchronize::is_at_safepoint()),
481 "Must be VMThread at safepoint");
482 #endif
483 if (NumberOfGCLogFiles == 1) {
484 // rotate in same file
485 rewind();
486 _bytes_written = 0L;
487 return;
488 }
490 // rotate file in names file.0, file.1, file.2, ..., file.<MaxGCLogFileNumbers-1>
491 // close current file, rotate to next file
492 if (_file != NULL) {
493 _cur_file_num ++;
494 if (_cur_file_num >= NumberOfGCLogFiles) _cur_file_num = 0;
495 jio_snprintf(_file_name, strlen(Arguments::gc_log_filename()) + 10, "%s.%d",
496 Arguments::gc_log_filename(), _cur_file_num);
497 fclose(_file);
498 _file = NULL;
499 }
500 _file = fopen(_file_name, "w");
501 if (_file != NULL) {
502 _bytes_written = 0L;
503 _need_close = true;
504 } else {
505 tty->print_cr("failed to open rotation log file %s due to %s\n",
506 _file_name, strerror(errno));
507 _need_close = false;
508 }
509 }
511 defaultStream* defaultStream::instance = NULL;
512 int defaultStream::_output_fd = 1;
513 int defaultStream::_error_fd = 2;
514 FILE* defaultStream::_output_stream = stdout;
515 FILE* defaultStream::_error_stream = stderr;
517 #define LOG_MAJOR_VERSION 160
518 #define LOG_MINOR_VERSION 1
520 void defaultStream::init() {
521 _inited = true;
522 if (LogVMOutput || LogCompilation) {
523 init_log();
524 }
525 }
527 bool defaultStream::has_log_file() {
528 // lazily create log file (at startup, LogVMOutput is false even
529 // if +LogVMOutput is used, because the flags haven't been parsed yet)
530 // For safer printing during fatal error handling, do not init logfile
531 // if a VM error has been reported.
532 if (!_inited && !is_error_reported()) init();
533 return _log_file != NULL;
534 }
536 static const char* make_log_name(const char* log_name, const char* force_directory) {
537 const char* basename = log_name;
538 char file_sep = os::file_separator()[0];
539 const char* cp;
540 for (cp = log_name; *cp != '\0'; cp++) {
541 if (*cp == '/' || *cp == file_sep) {
542 basename = cp+1;
543 }
544 }
545 const char* nametail = log_name;
547 // Compute buffer length
548 size_t buffer_length;
549 if (force_directory != NULL) {
550 buffer_length = strlen(force_directory) + strlen(os::file_separator()) +
551 strlen(basename) + 1;
552 } else {
553 buffer_length = strlen(log_name) + 1;
554 }
556 const char* star = strchr(basename, '*');
557 int star_pos = (star == NULL) ? -1 : (star - nametail);
558 int skip = 1;
559 if (star == NULL) {
560 // Try %p
561 star = strstr(basename, "%p");
562 if (star != NULL) {
563 skip = 2;
564 }
565 }
566 star_pos = (star == NULL) ? -1 : (star - nametail);
568 char pid[32];
569 if (star_pos >= 0) {
570 jio_snprintf(pid, sizeof(pid), "%u", os::current_process_id());
571 buffer_length += strlen(pid);
572 }
574 // Create big enough buffer.
575 char *buf = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal);
577 strcpy(buf, "");
578 if (force_directory != NULL) {
579 strcat(buf, force_directory);
580 strcat(buf, os::file_separator());
581 nametail = basename; // completely skip directory prefix
582 }
584 if (star_pos >= 0) {
585 // convert foo*bar.log or foo%pbar.log to foo123bar.log
586 int buf_pos = (int) strlen(buf);
587 strncpy(&buf[buf_pos], nametail, star_pos);
588 strcpy(&buf[buf_pos + star_pos], pid);
589 nametail += star_pos + skip; // skip prefix and pid format
590 }
592 strcat(buf, nametail); // append rest of name, or all of name
593 return buf;
594 }
596 void defaultStream::init_log() {
597 // %%% Need a MutexLocker?
598 const char* log_name = LogFile != NULL ? LogFile : "hotspot.log";
599 const char* try_name = make_log_name(log_name, NULL);
600 fileStream* file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name);
601 if (!file->is_open()) {
602 // Try again to open the file.
603 char warnbuf[O_BUFLEN*2];
604 jio_snprintf(warnbuf, sizeof(warnbuf),
605 "Warning: Cannot open log file: %s\n", try_name);
606 // Note: This feature is for maintainer use only. No need for L10N.
607 jio_print(warnbuf);
608 FREE_C_HEAP_ARRAY(char, try_name, mtInternal);
609 try_name = make_log_name("hs_pid%p.log", os::get_temp_directory());
610 jio_snprintf(warnbuf, sizeof(warnbuf),
611 "Warning: Forcing option -XX:LogFile=%s\n", try_name);
612 jio_print(warnbuf);
613 delete file;
614 file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name);
615 FREE_C_HEAP_ARRAY(char, try_name, mtInternal);
616 }
617 if (file->is_open()) {
618 _log_file = file;
619 xmlStream* xs = new(ResourceObj::C_HEAP, mtInternal) xmlStream(file);
620 _outer_xmlStream = xs;
621 if (this == tty) xtty = xs;
622 // Write XML header.
623 xs->print_cr("<?xml version='1.0' encoding='UTF-8'?>");
624 // (For now, don't bother to issue a DTD for this private format.)
625 jlong time_ms = os::javaTimeMillis() - tty->time_stamp().milliseconds();
626 // %%% Should be: jlong time_ms = os::start_time_milliseconds(), if
627 // we ever get round to introduce that method on the os class
628 xs->head("hotspot_log version='%d %d'"
629 " process='%d' time_ms='"INT64_FORMAT"'",
630 LOG_MAJOR_VERSION, LOG_MINOR_VERSION,
631 os::current_process_id(), time_ms);
632 // Write VM version header immediately.
633 xs->head("vm_version");
634 xs->head("name"); xs->text("%s", VM_Version::vm_name()); xs->cr();
635 xs->tail("name");
636 xs->head("release"); xs->text("%s", VM_Version::vm_release()); xs->cr();
637 xs->tail("release");
638 xs->head("info"); xs->text("%s", VM_Version::internal_vm_info_string()); xs->cr();
639 xs->tail("info");
640 xs->tail("vm_version");
641 // Record information about the command-line invocation.
642 xs->head("vm_arguments"); // Cf. Arguments::print_on()
643 if (Arguments::num_jvm_flags() > 0) {
644 xs->head("flags");
645 Arguments::print_jvm_flags_on(xs->text());
646 xs->tail("flags");
647 }
648 if (Arguments::num_jvm_args() > 0) {
649 xs->head("args");
650 Arguments::print_jvm_args_on(xs->text());
651 xs->tail("args");
652 }
653 if (Arguments::java_command() != NULL) {
654 xs->head("command"); xs->text()->print_cr("%s", Arguments::java_command());
655 xs->tail("command");
656 }
657 if (Arguments::sun_java_launcher() != NULL) {
658 xs->head("launcher"); xs->text()->print_cr("%s", Arguments::sun_java_launcher());
659 xs->tail("launcher");
660 }
661 if (Arguments::system_properties() != NULL) {
662 xs->head("properties");
663 // Print it as a java-style property list.
664 // System properties don't generally contain newlines, so don't bother with unparsing.
665 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) {
666 xs->text()->print_cr("%s=%s", p->key(), p->value());
667 }
668 xs->tail("properties");
669 }
670 xs->tail("vm_arguments");
671 // tty output per se is grouped under the <tty>...</tty> element.
672 xs->head("tty");
673 // All further non-markup text gets copied to the tty:
674 xs->_text = this; // requires friend declaration!
675 } else {
676 delete(file);
677 // and leave xtty as NULL
678 LogVMOutput = false;
679 DisplayVMOutput = true;
680 LogCompilation = false;
681 }
682 }
684 // finish_log() is called during normal VM shutdown. finish_log_on_error() is
685 // called by ostream_abort() after a fatal error.
686 //
687 void defaultStream::finish_log() {
688 xmlStream* xs = _outer_xmlStream;
689 xs->done("tty");
691 // Other log forks are appended here, at the End of Time:
692 CompileLog::finish_log(xs->out()); // write compile logging, if any, now
694 xs->done("hotspot_log");
695 xs->flush();
697 fileStream* file = _log_file;
698 _log_file = NULL;
700 delete _outer_xmlStream;
701 _outer_xmlStream = NULL;
703 file->flush();
704 delete file;
705 }
707 void defaultStream::finish_log_on_error(char *buf, int buflen) {
708 xmlStream* xs = _outer_xmlStream;
710 if (xs && xs->out()) {
712 xs->done_raw("tty");
714 // Other log forks are appended here, at the End of Time:
715 CompileLog::finish_log_on_error(xs->out(), buf, buflen); // write compile logging, if any, now
717 xs->done_raw("hotspot_log");
718 xs->flush();
720 fileStream* file = _log_file;
721 _log_file = NULL;
722 _outer_xmlStream = NULL;
724 if (file) {
725 file->flush();
727 // Can't delete or close the file because delete and fclose aren't
728 // async-safe. We are about to die, so leave it to the kernel.
729 // delete file;
730 }
731 }
732 }
734 intx defaultStream::hold(intx writer_id) {
735 bool has_log = has_log_file(); // check before locking
736 if (// impossible, but who knows?
737 writer_id == NO_WRITER ||
739 // bootstrap problem
740 tty_lock == NULL ||
742 // can't grab a lock or call Thread::current() if TLS isn't initialized
743 ThreadLocalStorage::thread() == NULL ||
745 // developer hook
746 !SerializeVMOutput ||
748 // VM already unhealthy
749 is_error_reported() ||
751 // safepoint == global lock (for VM only)
752 (SafepointSynchronize::is_synchronizing() &&
753 Thread::current()->is_VM_thread())
754 ) {
755 // do not attempt to lock unless we know the thread and the VM is healthy
756 return NO_WRITER;
757 }
758 if (_writer == writer_id) {
759 // already held, no need to re-grab the lock
760 return NO_WRITER;
761 }
762 tty_lock->lock_without_safepoint_check();
763 // got the lock
764 if (writer_id != _last_writer) {
765 if (has_log) {
766 _log_file->bol();
767 // output a hint where this output is coming from:
768 _log_file->print_cr("<writer thread='" UINTX_FORMAT "'/>", writer_id);
769 }
770 _last_writer = writer_id;
771 }
772 _writer = writer_id;
773 return writer_id;
774 }
776 void defaultStream::release(intx holder) {
777 if (holder == NO_WRITER) {
778 // nothing to release: either a recursive lock, or we scribbled (too bad)
779 return;
780 }
781 if (_writer != holder) {
782 return; // already unlocked, perhaps via break_tty_lock_for_safepoint
783 }
784 _writer = NO_WRITER;
785 tty_lock->unlock();
786 }
789 // Yuck: jio_print does not accept char*/len.
790 static void call_jio_print(const char* s, size_t len) {
791 char buffer[O_BUFLEN+100];
792 if (len > sizeof(buffer)-1) {
793 warning("increase O_BUFLEN in ostream.cpp -- output truncated");
794 len = sizeof(buffer)-1;
795 }
796 strncpy(buffer, s, len);
797 buffer[len] = '\0';
798 jio_print(buffer);
799 }
802 void defaultStream::write(const char* s, size_t len) {
803 intx thread_id = os::current_thread_id();
804 intx holder = hold(thread_id);
806 if (DisplayVMOutput &&
807 (_outer_xmlStream == NULL || !_outer_xmlStream->inside_attrs())) {
808 // print to output stream. It can be redirected by a vfprintf hook
809 if (s[len] == '\0') {
810 jio_print(s);
811 } else {
812 call_jio_print(s, len);
813 }
814 }
816 // print to log file
817 if (has_log_file()) {
818 int nl0 = _newlines;
819 xmlTextStream::write(s, len);
820 // flush the log file too, if there were any newlines
821 if (nl0 != _newlines){
822 flush();
823 }
824 } else {
825 update_position(s, len);
826 }
828 release(holder);
829 }
831 intx ttyLocker::hold_tty() {
832 if (defaultStream::instance == NULL) return defaultStream::NO_WRITER;
833 intx thread_id = os::current_thread_id();
834 return defaultStream::instance->hold(thread_id);
835 }
837 void ttyLocker::release_tty(intx holder) {
838 if (holder == defaultStream::NO_WRITER) return;
839 defaultStream::instance->release(holder);
840 }
842 bool ttyLocker::release_tty_if_locked() {
843 intx thread_id = os::current_thread_id();
844 if (defaultStream::instance->writer() == thread_id) {
845 // release the lock and return true so callers know if was
846 // previously held.
847 release_tty(thread_id);
848 return true;
849 }
850 return false;
851 }
853 void ttyLocker::break_tty_lock_for_safepoint(intx holder) {
854 if (defaultStream::instance != NULL &&
855 defaultStream::instance->writer() == holder) {
856 if (xtty != NULL) {
857 xtty->print_cr("<!-- safepoint while printing -->");
858 }
859 defaultStream::instance->release(holder);
860 }
861 // (else there was no lock to break)
862 }
864 void ostream_init() {
865 if (defaultStream::instance == NULL) {
866 defaultStream::instance = new(ResourceObj::C_HEAP, mtInternal) defaultStream();
867 tty = defaultStream::instance;
869 // We want to ensure that time stamps in GC logs consider time 0
870 // the time when the JVM is initialized, not the first time we ask
871 // for a time stamp. So, here, we explicitly update the time stamp
872 // of tty.
873 tty->time_stamp().update_to(1);
874 }
875 }
877 void ostream_init_log() {
878 // For -Xloggc:<file> option - called in runtime/thread.cpp
879 // Note : this must be called AFTER ostream_init()
881 gclog_or_tty = tty; // default to tty
882 if (Arguments::gc_log_filename() != NULL) {
883 fileStream * gclog = UseGCLogFileRotation ?
884 new(ResourceObj::C_HEAP, mtInternal)
885 rotatingFileStream(Arguments::gc_log_filename()) :
886 new(ResourceObj::C_HEAP, mtInternal)
887 fileStream(Arguments::gc_log_filename());
888 if (gclog->is_open()) {
889 // now we update the time stamp of the GC log to be synced up
890 // with tty.
891 gclog->time_stamp().update_to(tty->time_stamp().ticks());
892 }
893 gclog_or_tty = gclog;
894 }
896 // If we haven't lazily initialized the logfile yet, do it now,
897 // to avoid the possibility of lazy initialization during a VM
898 // crash, which can affect the stability of the fatal error handler.
899 defaultStream::instance->has_log_file();
900 }
902 // ostream_exit() is called during normal VM exit to finish log files, flush
903 // output and free resource.
904 void ostream_exit() {
905 static bool ostream_exit_called = false;
906 if (ostream_exit_called) return;
907 ostream_exit_called = true;
908 if (gclog_or_tty != tty) {
909 delete gclog_or_tty;
910 }
911 {
912 // we temporaly disable PrintMallocFree here
913 // as otherwise it'll lead to using of almost deleted
914 // tty or defaultStream::instance in logging facility
915 // of HeapFree(), see 6391258
916 DEBUG_ONLY(FlagSetting fs(PrintMallocFree, false);)
917 if (tty != defaultStream::instance) {
918 delete tty;
919 }
920 if (defaultStream::instance != NULL) {
921 delete defaultStream::instance;
922 }
923 }
924 tty = NULL;
925 xtty = NULL;
926 gclog_or_tty = NULL;
927 defaultStream::instance = NULL;
928 }
930 // ostream_abort() is called by os::abort() when VM is about to die.
931 void ostream_abort() {
932 // Here we can't delete gclog_or_tty and tty, just flush their output
933 if (gclog_or_tty) gclog_or_tty->flush();
934 if (tty) tty->flush();
936 if (defaultStream::instance != NULL) {
937 static char buf[4096];
938 defaultStream::instance->finish_log_on_error(buf, sizeof(buf));
939 }
940 }
942 staticBufferStream::staticBufferStream(char* buffer, size_t buflen,
943 outputStream *outer_stream) {
944 _buffer = buffer;
945 _buflen = buflen;
946 _outer_stream = outer_stream;
947 // compile task prints time stamp relative to VM start
948 _stamp.update_to(1);
949 }
951 void staticBufferStream::write(const char* c, size_t len) {
952 _outer_stream->print_raw(c, (int)len);
953 }
955 void staticBufferStream::flush() {
956 _outer_stream->flush();
957 }
959 void staticBufferStream::print(const char* format, ...) {
960 va_list ap;
961 va_start(ap, format);
962 size_t len;
963 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, false, len);
964 write(str, len);
965 va_end(ap);
966 }
968 void staticBufferStream::print_cr(const char* format, ...) {
969 va_list ap;
970 va_start(ap, format);
971 size_t len;
972 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, true, len);
973 write(str, len);
974 va_end(ap);
975 }
977 void staticBufferStream::vprint(const char *format, va_list argptr) {
978 size_t len;
979 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, false, len);
980 write(str, len);
981 }
983 void staticBufferStream::vprint_cr(const char* format, va_list argptr) {
984 size_t len;
985 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, true, len);
986 write(str, len);
987 }
989 bufferedStream::bufferedStream(size_t initial_size, size_t bufmax) : outputStream() {
990 buffer_length = initial_size;
991 buffer = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal);
992 buffer_pos = 0;
993 buffer_fixed = false;
994 buffer_max = bufmax;
995 }
997 bufferedStream::bufferedStream(char* fixed_buffer, size_t fixed_buffer_size, size_t bufmax) : outputStream() {
998 buffer_length = fixed_buffer_size;
999 buffer = fixed_buffer;
1000 buffer_pos = 0;
1001 buffer_fixed = true;
1002 buffer_max = bufmax;
1003 }
1005 void bufferedStream::write(const char* s, size_t len) {
1007 if(buffer_pos + len > buffer_max) {
1008 flush();
1009 }
1011 size_t end = buffer_pos + len;
1012 if (end >= buffer_length) {
1013 if (buffer_fixed) {
1014 // if buffer cannot resize, silently truncate
1015 len = buffer_length - buffer_pos - 1;
1016 } else {
1017 // For small overruns, double the buffer. For larger ones,
1018 // increase to the requested size.
1019 if (end < buffer_length * 2) {
1020 end = buffer_length * 2;
1021 }
1022 buffer = REALLOC_C_HEAP_ARRAY(char, buffer, end, mtInternal);
1023 buffer_length = end;
1024 }
1025 }
1026 memcpy(buffer + buffer_pos, s, len);
1027 buffer_pos += len;
1028 update_position(s, len);
1029 }
1031 char* bufferedStream::as_string() {
1032 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1);
1033 strncpy(copy, buffer, buffer_pos);
1034 copy[buffer_pos] = 0; // terminating null
1035 return copy;
1036 }
1038 bufferedStream::~bufferedStream() {
1039 if (!buffer_fixed) {
1040 FREE_C_HEAP_ARRAY(char, buffer, mtInternal);
1041 }
1042 }
1044 #ifndef PRODUCT
1046 #if defined(SOLARIS) || defined(LINUX) || defined(AIX) || defined(_ALLBSD_SOURCE)
1047 #include <sys/types.h>
1048 #include <sys/socket.h>
1049 #include <netinet/in.h>
1050 #include <arpa/inet.h>
1051 #endif
1053 // Network access
1054 networkStream::networkStream() : bufferedStream(1024*10, 1024*10) {
1056 _socket = -1;
1058 int result = os::socket(AF_INET, SOCK_STREAM, 0);
1059 if (result <= 0) {
1060 assert(false, "Socket could not be created!");
1061 } else {
1062 _socket = result;
1063 }
1064 }
1066 int networkStream::read(char *buf, size_t len) {
1067 return os::recv(_socket, buf, (int)len, 0);
1068 }
1070 void networkStream::flush() {
1071 if (size() != 0) {
1072 int result = os::raw_send(_socket, (char *)base(), size(), 0);
1073 assert(result != -1, "connection error");
1074 assert(result == (int)size(), "didn't send enough data");
1075 }
1076 reset();
1077 }
1079 networkStream::~networkStream() {
1080 close();
1081 }
1083 void networkStream::close() {
1084 if (_socket != -1) {
1085 flush();
1086 os::socket_close(_socket);
1087 _socket = -1;
1088 }
1089 }
1091 bool networkStream::connect(const char *ip, short port) {
1093 struct sockaddr_in server;
1094 server.sin_family = AF_INET;
1095 server.sin_port = htons(port);
1097 server.sin_addr.s_addr = inet_addr(ip);
1098 if (server.sin_addr.s_addr == (uint32_t)-1) {
1099 struct hostent* host = os::get_host_by_name((char*)ip);
1100 if (host != NULL) {
1101 memcpy(&server.sin_addr, host->h_addr_list[0], host->h_length);
1102 } else {
1103 return false;
1104 }
1105 }
1108 int result = os::connect(_socket, (struct sockaddr*)&server, sizeof(struct sockaddr_in));
1109 return (result >= 0);
1110 }
1112 #endif