Tue, 24 Jul 2018 13:22:11 +0800
#7048 added Loongson release info to hs_err crash files
1 /*
2 * Copyright (c) 1997, 2014, 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 "gc_implementation/shared/gcId.hpp"
28 #include "oops/oop.inline.hpp"
29 #include "runtime/arguments.hpp"
30 #include "utilities/defaultStream.hpp"
31 #include "utilities/ostream.hpp"
32 #include "utilities/top.hpp"
33 #include "utilities/xmlstream.hpp"
34 #ifdef TARGET_OS_FAMILY_linux
35 # include "os_linux.inline.hpp"
36 #endif
37 #ifdef TARGET_OS_FAMILY_solaris
38 # include "os_solaris.inline.hpp"
39 #endif
40 #ifdef TARGET_OS_FAMILY_windows
41 # include "os_windows.inline.hpp"
42 #endif
43 #ifdef TARGET_OS_FAMILY_aix
44 # include "os_aix.inline.hpp"
45 #endif
46 #ifdef TARGET_OS_FAMILY_bsd
47 # include "os_bsd.inline.hpp"
48 #endif
50 extern "C" void jio_print(const char* s); // Declarationtion of jvm method
52 outputStream::outputStream(int width) {
53 _width = width;
54 _position = 0;
55 _newlines = 0;
56 _precount = 0;
57 _indentation = 0;
58 }
60 outputStream::outputStream(int width, bool has_time_stamps) {
61 _width = width;
62 _position = 0;
63 _newlines = 0;
64 _precount = 0;
65 _indentation = 0;
66 if (has_time_stamps) _stamp.update();
67 }
69 void outputStream::update_position(const char* s, size_t len) {
70 for (size_t i = 0; i < len; i++) {
71 char ch = s[i];
72 if (ch == '\n') {
73 _newlines += 1;
74 _precount += _position + 1;
75 _position = 0;
76 } else if (ch == '\t') {
77 int tw = 8 - (_position & 7);
78 _position += tw;
79 _precount -= tw-1; // invariant: _precount + _position == total count
80 } else {
81 _position += 1;
82 }
83 }
84 }
86 // Execute a vsprintf, using the given buffer if necessary.
87 // Return a pointer to the formatted string.
88 const char* outputStream::do_vsnprintf(char* buffer, size_t buflen,
89 const char* format, va_list ap,
90 bool add_cr,
91 size_t& result_len) {
92 const char* result;
93 if (add_cr) buflen--;
94 if (!strchr(format, '%')) {
95 // constant format string
96 result = format;
97 result_len = strlen(result);
98 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate
99 } else if (format[0] == '%' && format[1] == 's' && format[2] == '\0') {
100 // trivial copy-through format string
101 result = va_arg(ap, const char*);
102 result_len = strlen(result);
103 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate
104 } else if (vsnprintf(buffer, buflen, format, ap) >= 0) {
105 result = buffer;
106 result_len = strlen(result);
107 } else {
108 DEBUG_ONLY(warning("increase O_BUFLEN in ostream.hpp -- output truncated");)
109 result = buffer;
110 result_len = buflen - 1;
111 buffer[result_len] = 0;
112 }
113 if (add_cr) {
114 if (result != buffer) {
115 strncpy(buffer, result, buflen);
116 result = buffer;
117 }
118 buffer[result_len++] = '\n';
119 buffer[result_len] = 0;
120 }
121 return result;
122 }
124 void outputStream::print(const char* format, ...) {
125 char buffer[O_BUFLEN];
126 va_list ap;
127 va_start(ap, format);
128 size_t len;
129 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, false, len);
130 write(str, len);
131 va_end(ap);
132 }
134 void outputStream::print_cr(const char* format, ...) {
135 char buffer[O_BUFLEN];
136 va_list ap;
137 va_start(ap, format);
138 size_t len;
139 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, true, len);
140 write(str, len);
141 va_end(ap);
142 }
144 void outputStream::vprint(const char *format, va_list argptr) {
145 char buffer[O_BUFLEN];
146 size_t len;
147 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, false, len);
148 write(str, len);
149 }
151 void outputStream::vprint_cr(const char* format, va_list argptr) {
152 char buffer[O_BUFLEN];
153 size_t len;
154 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, true, len);
155 write(str, len);
156 }
158 void outputStream::fill_to(int col) {
159 int need_fill = col - position();
160 sp(need_fill);
161 }
163 void outputStream::move_to(int col, int slop, int min_space) {
164 if (position() >= col + slop)
165 cr();
166 int need_fill = col - position();
167 if (need_fill < min_space)
168 need_fill = min_space;
169 sp(need_fill);
170 }
172 void outputStream::put(char ch) {
173 assert(ch != 0, "please fix call site");
174 char buf[] = { ch, '\0' };
175 write(buf, 1);
176 }
178 #define SP_USE_TABS false
180 void outputStream::sp(int count) {
181 if (count < 0) return;
182 if (SP_USE_TABS && count >= 8) {
183 int target = position() + count;
184 while (count >= 8) {
185 this->write("\t", 1);
186 count -= 8;
187 }
188 count = target - position();
189 }
190 while (count > 0) {
191 int nw = (count > 8) ? 8 : count;
192 this->write(" ", nw);
193 count -= nw;
194 }
195 }
197 void outputStream::cr() {
198 this->write("\n", 1);
199 }
201 void outputStream::stamp() {
202 if (! _stamp.is_updated()) {
203 _stamp.update(); // start at 0 on first call to stamp()
204 }
206 // outputStream::stamp() may get called by ostream_abort(), use snprintf
207 // to avoid allocating large stack buffer in print().
208 char buf[40];
209 jio_snprintf(buf, sizeof(buf), "%.3f", _stamp.seconds());
210 print_raw(buf);
211 }
213 void outputStream::stamp(bool guard,
214 const char* prefix,
215 const char* suffix) {
216 if (!guard) {
217 return;
218 }
219 print_raw(prefix);
220 stamp();
221 print_raw(suffix);
222 }
224 void outputStream::date_stamp(bool guard,
225 const char* prefix,
226 const char* suffix) {
227 if (!guard) {
228 return;
229 }
230 print_raw(prefix);
231 static const char error_time[] = "yyyy-mm-ddThh:mm:ss.mmm+zzzz";
232 static const int buffer_length = 32;
233 char buffer[buffer_length];
234 const char* iso8601_result = os::iso8601_time(buffer, buffer_length);
235 if (iso8601_result != NULL) {
236 print_raw(buffer);
237 } else {
238 print_raw(error_time);
239 }
240 print_raw(suffix);
241 return;
242 }
244 void outputStream::gclog_stamp(const GCId& gc_id) {
245 date_stamp(PrintGCDateStamps);
246 stamp(PrintGCTimeStamps);
247 if (PrintGCID) {
248 print("#%u: ", gc_id.id());
249 }
250 }
252 outputStream& outputStream::indent() {
253 while (_position < _indentation) sp();
254 return *this;
255 }
257 void outputStream::print_jlong(jlong value) {
258 print(JLONG_FORMAT, value);
259 }
261 void outputStream::print_julong(julong value) {
262 print(JULONG_FORMAT, value);
263 }
265 /**
266 * This prints out hex data in a 'windbg' or 'xxd' form, where each line is:
267 * <hex-address>: 8 * <hex-halfword> <ascii translation (optional)>
268 * example:
269 * 0000000: 7f44 4f46 0102 0102 0000 0000 0000 0000 .DOF............
270 * 0000010: 0000 0000 0000 0040 0000 0020 0000 0005 .......@... ....
271 * 0000020: 0000 0000 0000 0040 0000 0000 0000 015d .......@.......]
272 * ...
273 *
274 * indent is applied to each line. Ends with a CR.
275 */
276 void outputStream::print_data(void* data, size_t len, bool with_ascii) {
277 size_t limit = (len + 16) / 16 * 16;
278 for (size_t i = 0; i < limit; ++i) {
279 if (i % 16 == 0) {
280 indent().print(SIZE_FORMAT_HEX_W(07)":", i);
281 }
282 if (i % 2 == 0) {
283 print(" ");
284 }
285 if (i < len) {
286 print("%02x", ((unsigned char*)data)[i]);
287 } else {
288 print(" ");
289 }
290 if ((i + 1) % 16 == 0) {
291 if (with_ascii) {
292 print(" ");
293 for (size_t j = 0; j < 16; ++j) {
294 size_t idx = i + j - 15;
295 if (idx < len) {
296 char c = ((char*)data)[idx];
297 print("%c", c >= 32 && c <= 126 ? c : '.');
298 }
299 }
300 }
301 cr();
302 }
303 }
304 }
306 stringStream::stringStream(size_t initial_size) : outputStream() {
307 buffer_length = initial_size;
308 buffer = NEW_RESOURCE_ARRAY(char, buffer_length);
309 buffer_pos = 0;
310 buffer_fixed = false;
311 DEBUG_ONLY(rm = Thread::current()->current_resource_mark();)
312 }
314 // useful for output to fixed chunks of memory, such as performance counters
315 stringStream::stringStream(char* fixed_buffer, size_t fixed_buffer_size) : outputStream() {
316 buffer_length = fixed_buffer_size;
317 buffer = fixed_buffer;
318 buffer_pos = 0;
319 buffer_fixed = true;
320 }
322 void stringStream::write(const char* s, size_t len) {
323 size_t write_len = len; // number of non-null bytes to write
324 size_t end = buffer_pos + len + 1; // position after write and final '\0'
325 if (end > buffer_length) {
326 if (buffer_fixed) {
327 // if buffer cannot resize, silently truncate
328 end = buffer_length;
329 write_len = end - buffer_pos - 1; // leave room for the final '\0'
330 } else {
331 // For small overruns, double the buffer. For larger ones,
332 // increase to the requested size.
333 if (end < buffer_length * 2) {
334 end = buffer_length * 2;
335 }
336 char* oldbuf = buffer;
337 assert(rm == NULL || Thread::current()->current_resource_mark() == rm,
338 "stringStream is re-allocated with a different ResourceMark");
339 buffer = NEW_RESOURCE_ARRAY(char, end);
340 strncpy(buffer, oldbuf, buffer_pos);
341 buffer_length = end;
342 }
343 }
344 // invariant: buffer is always null-terminated
345 guarantee(buffer_pos + write_len + 1 <= buffer_length, "stringStream oob");
346 buffer[buffer_pos + write_len] = 0;
347 strncpy(buffer + buffer_pos, s, write_len);
348 buffer_pos += write_len;
350 // Note that the following does not depend on write_len.
351 // This means that position and count get updated
352 // even when overflow occurs.
353 update_position(s, len);
354 }
356 char* stringStream::as_string() {
357 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos + 1);
358 strncpy(copy, buffer, buffer_pos);
359 copy[buffer_pos] = 0; // terminating null
360 return copy;
361 }
363 stringStream::~stringStream() {}
365 xmlStream* xtty;
366 outputStream* tty;
367 outputStream* gclog_or_tty;
368 CDS_ONLY(fileStream* classlist_file;) // Only dump the classes that can be stored into the CDS archive
369 extern Mutex* tty_lock;
371 #define EXTRACHARLEN 32
372 #define CURRENTAPPX ".current"
373 // convert YYYY-MM-DD HH:MM:SS to YYYY-MM-DD_HH-MM-SS
374 char* get_datetime_string(char *buf, size_t len) {
375 os::local_time_string(buf, len);
376 int i = (int)strlen(buf);
377 while (i-- >= 0) {
378 if (buf[i] == ' ') buf[i] = '_';
379 else if (buf[i] == ':') buf[i] = '-';
380 }
381 return buf;
382 }
384 static const char* make_log_name_internal(const char* log_name, const char* force_directory,
385 int pid, const char* tms) {
386 const char* basename = log_name;
387 char file_sep = os::file_separator()[0];
388 const char* cp;
389 char pid_text[32];
391 for (cp = log_name; *cp != '\0'; cp++) {
392 if (*cp == '/' || *cp == file_sep) {
393 basename = cp + 1;
394 }
395 }
396 const char* nametail = log_name;
397 // Compute buffer length
398 size_t buffer_length;
399 if (force_directory != NULL) {
400 buffer_length = strlen(force_directory) + strlen(os::file_separator()) +
401 strlen(basename) + 1;
402 } else {
403 buffer_length = strlen(log_name) + 1;
404 }
406 const char* pts = strstr(basename, "%p");
407 int pid_pos = (pts == NULL) ? -1 : (pts - nametail);
409 if (pid_pos >= 0) {
410 jio_snprintf(pid_text, sizeof(pid_text), "pid%u", pid);
411 buffer_length += strlen(pid_text);
412 }
414 pts = strstr(basename, "%t");
415 int tms_pos = (pts == NULL) ? -1 : (pts - nametail);
416 if (tms_pos >= 0) {
417 buffer_length += strlen(tms);
418 }
420 // File name is too long.
421 if (buffer_length > JVM_MAXPATHLEN) {
422 return NULL;
423 }
425 // Create big enough buffer.
426 char *buf = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal);
428 strcpy(buf, "");
429 if (force_directory != NULL) {
430 strcat(buf, force_directory);
431 strcat(buf, os::file_separator());
432 nametail = basename; // completely skip directory prefix
433 }
435 // who is first, %p or %t?
436 int first = -1, second = -1;
437 const char *p1st = NULL;
438 const char *p2nd = NULL;
440 if (pid_pos >= 0 && tms_pos >= 0) {
441 // contains both %p and %t
442 if (pid_pos < tms_pos) {
443 // case foo%pbar%tmonkey.log
444 first = pid_pos;
445 p1st = pid_text;
446 second = tms_pos;
447 p2nd = tms;
448 } else {
449 // case foo%tbar%pmonkey.log
450 first = tms_pos;
451 p1st = tms;
452 second = pid_pos;
453 p2nd = pid_text;
454 }
455 } else if (pid_pos >= 0) {
456 // contains %p only
457 first = pid_pos;
458 p1st = pid_text;
459 } else if (tms_pos >= 0) {
460 // contains %t only
461 first = tms_pos;
462 p1st = tms;
463 }
465 int buf_pos = (int)strlen(buf);
466 const char* tail = nametail;
468 if (first >= 0) {
469 tail = nametail + first + 2;
470 strncpy(&buf[buf_pos], nametail, first);
471 strcpy(&buf[buf_pos + first], p1st);
472 buf_pos = (int)strlen(buf);
473 if (second >= 0) {
474 strncpy(&buf[buf_pos], tail, second - first - 2);
475 strcpy(&buf[buf_pos + second - first - 2], p2nd);
476 tail = nametail + second + 2;
477 }
478 }
479 strcat(buf, tail); // append rest of name, or all of name
480 return buf;
481 }
483 // log_name comes from -XX:LogFile=log_name, -Xloggc:log_name or
484 // -XX:DumpLoadedClassList=<file_name>
485 // in log_name, %p => pid1234 and
486 // %t => YYYY-MM-DD_HH-MM-SS
487 static const char* make_log_name(const char* log_name, const char* force_directory) {
488 char timestr[32];
489 get_datetime_string(timestr, sizeof(timestr));
490 return make_log_name_internal(log_name, force_directory, os::current_process_id(),
491 timestr);
492 }
494 #ifndef PRODUCT
495 void test_loggc_filename() {
496 int pid;
497 char tms[32];
498 char i_result[JVM_MAXPATHLEN];
499 const char* o_result;
500 get_datetime_string(tms, sizeof(tms));
501 pid = os::current_process_id();
503 // test.log
504 jio_snprintf(i_result, JVM_MAXPATHLEN, "test.log", tms);
505 o_result = make_log_name_internal("test.log", NULL, pid, tms);
506 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"test.log\", NULL)");
507 FREE_C_HEAP_ARRAY(char, o_result, mtInternal);
509 // test-%t-%p.log
510 jio_snprintf(i_result, JVM_MAXPATHLEN, "test-%s-pid%u.log", tms, pid);
511 o_result = make_log_name_internal("test-%t-%p.log", NULL, pid, tms);
512 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"test-%%t-%%p.log\", NULL)");
513 FREE_C_HEAP_ARRAY(char, o_result, mtInternal);
515 // test-%t%p.log
516 jio_snprintf(i_result, JVM_MAXPATHLEN, "test-%spid%u.log", tms, pid);
517 o_result = make_log_name_internal("test-%t%p.log", NULL, pid, tms);
518 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"test-%%t%%p.log\", NULL)");
519 FREE_C_HEAP_ARRAY(char, o_result, mtInternal);
521 // %p%t.log
522 jio_snprintf(i_result, JVM_MAXPATHLEN, "pid%u%s.log", pid, tms);
523 o_result = make_log_name_internal("%p%t.log", NULL, pid, tms);
524 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"%%p%%t.log\", NULL)");
525 FREE_C_HEAP_ARRAY(char, o_result, mtInternal);
527 // %p-test.log
528 jio_snprintf(i_result, JVM_MAXPATHLEN, "pid%u-test.log", pid);
529 o_result = make_log_name_internal("%p-test.log", NULL, pid, tms);
530 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"%%p-test.log\", NULL)");
531 FREE_C_HEAP_ARRAY(char, o_result, mtInternal);
533 // %t.log
534 jio_snprintf(i_result, JVM_MAXPATHLEN, "%s.log", tms);
535 o_result = make_log_name_internal("%t.log", NULL, pid, tms);
536 assert(strcmp(i_result, o_result) == 0, "failed on testing make_log_name(\"%%t.log\", NULL)");
537 FREE_C_HEAP_ARRAY(char, o_result, mtInternal);
539 {
540 // longest filename
541 char longest_name[JVM_MAXPATHLEN];
542 memset(longest_name, 'a', sizeof(longest_name));
543 longest_name[JVM_MAXPATHLEN - 1] = '\0';
544 o_result = make_log_name_internal((const char*)&longest_name, NULL, pid, tms);
545 assert(strcmp(longest_name, o_result) == 0, err_msg("longest name does not match. expected '%s' but got '%s'", longest_name, o_result));
546 FREE_C_HEAP_ARRAY(char, o_result, mtInternal);
547 }
549 {
550 // too long file name
551 char too_long_name[JVM_MAXPATHLEN + 100];
552 int too_long_length = sizeof(too_long_name);
553 memset(too_long_name, 'a', too_long_length);
554 too_long_name[too_long_length - 1] = '\0';
555 o_result = make_log_name_internal((const char*)&too_long_name, NULL, pid, tms);
556 assert(o_result == NULL, err_msg("Too long file name should return NULL, but got '%s'", o_result));
557 }
559 {
560 // too long with timestamp
561 char longest_name[JVM_MAXPATHLEN];
562 memset(longest_name, 'a', JVM_MAXPATHLEN);
563 longest_name[JVM_MAXPATHLEN - 3] = '%';
564 longest_name[JVM_MAXPATHLEN - 2] = 't';
565 longest_name[JVM_MAXPATHLEN - 1] = '\0';
566 o_result = make_log_name_internal((const char*)&longest_name, NULL, pid, tms);
567 assert(o_result == NULL, err_msg("Too long file name after timestamp expansion should return NULL, but got '%s'", o_result));
568 }
570 {
571 // too long with pid
572 char longest_name[JVM_MAXPATHLEN];
573 memset(longest_name, 'a', JVM_MAXPATHLEN);
574 longest_name[JVM_MAXPATHLEN - 3] = '%';
575 longest_name[JVM_MAXPATHLEN - 2] = 'p';
576 longest_name[JVM_MAXPATHLEN - 1] = '\0';
577 o_result = make_log_name_internal((const char*)&longest_name, NULL, pid, tms);
578 assert(o_result == NULL, err_msg("Too long file name after pid expansion should return NULL, but got '%s'", o_result));
579 }
580 }
581 #endif // PRODUCT
583 fileStream::fileStream(const char* file_name) {
584 _file = fopen(file_name, "w");
585 if (_file != NULL) {
586 _need_close = true;
587 } else {
588 warning("Cannot open file %s due to %s\n", file_name, strerror(errno));
589 _need_close = false;
590 }
591 }
593 fileStream::fileStream(const char* file_name, const char* opentype) {
594 _file = fopen(file_name, opentype);
595 if (_file != NULL) {
596 _need_close = true;
597 } else {
598 warning("Cannot open file %s due to %s\n", file_name, strerror(errno));
599 _need_close = false;
600 }
601 }
603 void fileStream::write(const char* s, size_t len) {
604 if (_file != NULL) {
605 // Make an unused local variable to avoid warning from gcc 4.x compiler.
606 size_t count = fwrite(s, 1, len, _file);
607 }
608 update_position(s, len);
609 }
611 long fileStream::fileSize() {
612 long size = -1;
613 if (_file != NULL) {
614 long pos = ::ftell(_file);
615 if (::fseek(_file, 0, SEEK_END) == 0) {
616 size = ::ftell(_file);
617 }
618 ::fseek(_file, pos, SEEK_SET);
619 }
620 return size;
621 }
623 char* fileStream::readln(char *data, int count ) {
624 char * ret = ::fgets(data, count, _file);
625 //Get rid of annoying \n char
626 data[::strlen(data)-1] = '\0';
627 return ret;
628 }
630 fileStream::~fileStream() {
631 if (_file != NULL) {
632 if (_need_close) fclose(_file);
633 _file = NULL;
634 }
635 }
637 void fileStream::flush() {
638 fflush(_file);
639 }
641 fdStream::fdStream(const char* file_name) {
642 _fd = open(file_name, O_WRONLY | O_CREAT | O_TRUNC, 0666);
643 _need_close = true;
644 }
646 fdStream::~fdStream() {
647 if (_fd != -1) {
648 if (_need_close) close(_fd);
649 _fd = -1;
650 }
651 }
653 void fdStream::write(const char* s, size_t len) {
654 if (_fd != -1) {
655 // Make an unused local variable to avoid warning from gcc 4.x compiler.
656 size_t count = ::write(_fd, s, (int)len);
657 }
658 update_position(s, len);
659 }
661 // dump vm version, os version, platform info, build id,
662 // memory usage and command line flags into header
663 void gcLogFileStream::dump_loggc_header() {
664 if (is_open()) {
665 print_cr("%s", Abstract_VM_Version::internal_vm_info_string());
666 os::print_memory_info(this);
667 print("CommandLine flags: ");
668 CommandLineFlags::printSetFlags(this);
669 }
670 }
672 gcLogFileStream::~gcLogFileStream() {
673 if (_file != NULL) {
674 if (_need_close) fclose(_file);
675 _file = NULL;
676 }
677 if (_file_name != NULL) {
678 FREE_C_HEAP_ARRAY(char, _file_name, mtInternal);
679 _file_name = NULL;
680 }
681 }
683 gcLogFileStream::gcLogFileStream(const char* file_name) {
684 _cur_file_num = 0;
685 _bytes_written = 0L;
686 _file_name = make_log_name(file_name, NULL);
688 if (_file_name == NULL) {
689 warning("Cannot open file %s: file name is too long.\n", file_name);
690 _need_close = false;
691 UseGCLogFileRotation = false;
692 return;
693 }
695 // gc log file rotation
696 if (UseGCLogFileRotation && NumberOfGCLogFiles > 1) {
697 char tempbuf[JVM_MAXPATHLEN];
698 jio_snprintf(tempbuf, sizeof(tempbuf), "%s.%d" CURRENTAPPX, _file_name, _cur_file_num);
699 _file = fopen(tempbuf, "w");
700 } else {
701 _file = fopen(_file_name, "w");
702 }
703 if (_file != NULL) {
704 _need_close = true;
705 dump_loggc_header();
706 } else {
707 warning("Cannot open file %s due to %s\n", _file_name, strerror(errno));
708 _need_close = false;
709 }
710 }
712 void gcLogFileStream::write(const char* s, size_t len) {
713 if (_file != NULL) {
714 size_t count = fwrite(s, 1, len, _file);
715 _bytes_written += count;
716 }
717 update_position(s, len);
718 }
720 // rotate_log must be called from VMThread at safepoint. In case need change parameters
721 // for gc log rotation from thread other than VMThread, a sub type of VM_Operation
722 // should be created and be submitted to VMThread's operation queue. DO NOT call this
723 // function directly. Currently, it is safe to rotate log at safepoint through VMThread.
724 // That is, no mutator threads and concurrent GC threads run parallel with VMThread to
725 // write to gc log file at safepoint. If in future, changes made for mutator threads or
726 // concurrent GC threads to run parallel with VMThread at safepoint, write and rotate_log
727 // must be synchronized.
728 void gcLogFileStream::rotate_log(bool force, outputStream* out) {
729 char time_msg[O_BUFLEN];
730 char time_str[EXTRACHARLEN];
731 char current_file_name[JVM_MAXPATHLEN];
732 char renamed_file_name[JVM_MAXPATHLEN];
734 if (!should_rotate(force)) {
735 return;
736 }
738 #ifdef ASSERT
739 Thread *thread = Thread::current();
740 assert(thread == NULL ||
741 (thread->is_VM_thread() && SafepointSynchronize::is_at_safepoint()),
742 "Must be VMThread at safepoint");
743 #endif
744 if (NumberOfGCLogFiles == 1) {
745 // rotate in same file
746 rewind();
747 _bytes_written = 0L;
748 jio_snprintf(time_msg, sizeof(time_msg), "File %s rotated at %s\n",
749 _file_name, os::local_time_string((char *)time_str, sizeof(time_str)));
750 write(time_msg, strlen(time_msg));
752 if (out != NULL) {
753 out->print("%s", time_msg);
754 }
756 dump_loggc_header();
757 return;
758 }
760 #if defined(_WINDOWS)
761 #ifndef F_OK
762 #define F_OK 0
763 #endif
764 #endif // _WINDOWS
766 // rotate file in names extended_filename.0, extended_filename.1, ...,
767 // extended_filename.<NumberOfGCLogFiles - 1>. Current rotation file name will
768 // have a form of extended_filename.<i>.current where i is the current rotation
769 // file number. After it reaches max file size, the file will be saved and renamed
770 // with .current removed from its tail.
771 if (_file != NULL) {
772 jio_snprintf(renamed_file_name, JVM_MAXPATHLEN, "%s.%d",
773 _file_name, _cur_file_num);
774 int result = jio_snprintf(current_file_name, JVM_MAXPATHLEN,
775 "%s.%d" CURRENTAPPX, _file_name, _cur_file_num);
776 if (result >= JVM_MAXPATHLEN) {
777 warning("Cannot create new log file name: %s: file name is too long.\n", current_file_name);
778 return;
779 }
781 const char* msg = force ? "GC log rotation request has been received."
782 : "GC log file has reached the maximum size.";
783 jio_snprintf(time_msg, sizeof(time_msg), "%s %s Saved as %s\n",
784 os::local_time_string((char *)time_str, sizeof(time_str)),
785 msg, renamed_file_name);
786 write(time_msg, strlen(time_msg));
788 if (out != NULL) {
789 out->print("%s", time_msg);
790 }
792 fclose(_file);
793 _file = NULL;
795 bool can_rename = true;
796 if (access(current_file_name, F_OK) != 0) {
797 // current file does not exist?
798 warning("No source file exists, cannot rename\n");
799 can_rename = false;
800 }
801 if (can_rename) {
802 if (access(renamed_file_name, F_OK) == 0) {
803 if (remove(renamed_file_name) != 0) {
804 warning("Could not delete existing file %s\n", renamed_file_name);
805 can_rename = false;
806 }
807 } else {
808 // file does not exist, ok to rename
809 }
810 }
811 if (can_rename && rename(current_file_name, renamed_file_name) != 0) {
812 warning("Could not rename %s to %s\n", _file_name, renamed_file_name);
813 }
814 }
816 _cur_file_num++;
817 if (_cur_file_num > NumberOfGCLogFiles - 1) _cur_file_num = 0;
818 int result = jio_snprintf(current_file_name, JVM_MAXPATHLEN, "%s.%d" CURRENTAPPX,
819 _file_name, _cur_file_num);
820 if (result >= JVM_MAXPATHLEN) {
821 warning("Cannot create new log file name: %s: file name is too long.\n", current_file_name);
822 return;
823 }
825 _file = fopen(current_file_name, "w");
827 if (_file != NULL) {
828 _bytes_written = 0L;
829 _need_close = true;
830 // reuse current_file_name for time_msg
831 jio_snprintf(current_file_name, JVM_MAXPATHLEN,
832 "%s.%d", _file_name, _cur_file_num);
833 jio_snprintf(time_msg, sizeof(time_msg), "%s GC log file created %s\n",
834 os::local_time_string((char *)time_str, sizeof(time_str)), current_file_name);
835 write(time_msg, strlen(time_msg));
837 if (out != NULL) {
838 out->print("%s", time_msg);
839 }
841 dump_loggc_header();
842 // remove the existing file
843 if (access(current_file_name, F_OK) == 0) {
844 if (remove(current_file_name) != 0) {
845 warning("Could not delete existing file %s\n", current_file_name);
846 }
847 }
848 } else {
849 warning("failed to open rotation log file %s due to %s\n"
850 "Turned off GC log file rotation\n",
851 _file_name, strerror(errno));
852 _need_close = false;
853 FLAG_SET_DEFAULT(UseGCLogFileRotation, false);
854 }
855 }
857 defaultStream* defaultStream::instance = NULL;
858 int defaultStream::_output_fd = 1;
859 int defaultStream::_error_fd = 2;
860 FILE* defaultStream::_output_stream = stdout;
861 FILE* defaultStream::_error_stream = stderr;
863 #define LOG_MAJOR_VERSION 160
864 #define LOG_MINOR_VERSION 1
866 void defaultStream::init() {
867 _inited = true;
868 if (LogVMOutput || LogCompilation) {
869 init_log();
870 }
871 }
873 bool defaultStream::has_log_file() {
874 // lazily create log file (at startup, LogVMOutput is false even
875 // if +LogVMOutput is used, because the flags haven't been parsed yet)
876 // For safer printing during fatal error handling, do not init logfile
877 // if a VM error has been reported.
878 if (!_inited && !is_error_reported()) init();
879 return _log_file != NULL;
880 }
882 fileStream* defaultStream::open_file(const char* log_name) {
883 const char* try_name = make_log_name(log_name, NULL);
884 if (try_name == NULL) {
885 warning("Cannot open file %s: file name is too long.\n", log_name);
886 return NULL;
887 }
889 fileStream* file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name);
890 FREE_C_HEAP_ARRAY(char, try_name, mtInternal);
891 if (file->is_open()) {
892 return file;
893 }
895 // Try again to open the file in the temp directory.
896 delete file;
897 char warnbuf[O_BUFLEN*2];
898 jio_snprintf(warnbuf, sizeof(warnbuf), "Warning: Cannot open log file: %s\n", log_name);
899 // Note: This feature is for maintainer use only. No need for L10N.
900 jio_print(warnbuf);
901 try_name = make_log_name(log_name, os::get_temp_directory());
902 if (try_name == NULL) {
903 warning("Cannot open file %s: file name is too long for directory %s.\n", log_name, os::get_temp_directory());
904 return NULL;
905 }
907 jio_snprintf(warnbuf, sizeof(warnbuf),
908 "Warning: Forcing option -XX:LogFile=%s\n", try_name);
909 jio_print(warnbuf);
911 file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name);
912 FREE_C_HEAP_ARRAY(char, try_name, mtInternal);
913 if (file->is_open()) {
914 return file;
915 }
917 delete file;
918 return NULL;
919 }
921 void defaultStream::init_log() {
922 // %%% Need a MutexLocker?
923 const char* log_name = LogFile != NULL ? LogFile : "hotspot_%p.log";
924 fileStream* file = open_file(log_name);
926 if (file != NULL) {
927 _log_file = file;
928 _outer_xmlStream = new(ResourceObj::C_HEAP, mtInternal) xmlStream(file);
929 start_log();
930 } else {
931 // and leave xtty as NULL
932 LogVMOutput = false;
933 DisplayVMOutput = true;
934 LogCompilation = false;
935 }
936 }
938 void defaultStream::start_log() {
939 xmlStream*xs = _outer_xmlStream;
940 if (this == tty) xtty = xs;
941 // Write XML header.
942 xs->print_cr("<?xml version='1.0' encoding='UTF-8'?>");
943 // (For now, don't bother to issue a DTD for this private format.)
944 jlong time_ms = os::javaTimeMillis() - tty->time_stamp().milliseconds();
945 // %%% Should be: jlong time_ms = os::start_time_milliseconds(), if
946 // we ever get round to introduce that method on the os class
947 xs->head("hotspot_log version='%d %d'"
948 " process='%d' time_ms='"INT64_FORMAT"'",
949 LOG_MAJOR_VERSION, LOG_MINOR_VERSION,
950 os::current_process_id(), (int64_t)time_ms);
951 // Write VM version header immediately.
952 xs->head("vm_version");
953 xs->head("name"); xs->text("%s", VM_Version::vm_name()); xs->cr();
954 xs->tail("name");
955 xs->head("release"); xs->text("%s", VM_Version::vm_release()); xs->cr();
956 xs->tail("release");
957 xs->head("info"); xs->text("%s", VM_Version::internal_vm_info_string()); xs->cr();
958 xs->tail("info");
959 xs->tail("vm_version");
960 // Record information about the command-line invocation.
961 xs->head("vm_arguments"); // Cf. Arguments::print_on()
962 if (Arguments::num_jvm_flags() > 0) {
963 xs->head("flags");
964 Arguments::print_jvm_flags_on(xs->text());
965 xs->tail("flags");
966 }
967 if (Arguments::num_jvm_args() > 0) {
968 xs->head("args");
969 Arguments::print_jvm_args_on(xs->text());
970 xs->tail("args");
971 }
972 if (Arguments::java_command() != NULL) {
973 xs->head("command"); xs->text()->print_cr("%s", Arguments::java_command());
974 xs->tail("command");
975 }
976 if (Arguments::sun_java_launcher() != NULL) {
977 xs->head("launcher"); xs->text()->print_cr("%s", Arguments::sun_java_launcher());
978 xs->tail("launcher");
979 }
980 if (Arguments::system_properties() != NULL) {
981 xs->head("properties");
982 // Print it as a java-style property list.
983 // System properties don't generally contain newlines, so don't bother with unparsing.
984 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) {
985 xs->text()->print_cr("%s=%s", p->key(), p->value());
986 }
987 xs->tail("properties");
988 }
989 xs->tail("vm_arguments");
990 // tty output per se is grouped under the <tty>...</tty> element.
991 xs->head("tty");
992 // All further non-markup text gets copied to the tty:
993 xs->_text = this; // requires friend declaration!
994 }
996 // finish_log() is called during normal VM shutdown. finish_log_on_error() is
997 // called by ostream_abort() after a fatal error.
998 //
999 void defaultStream::finish_log() {
1000 xmlStream* xs = _outer_xmlStream;
1001 xs->done("tty");
1003 // Other log forks are appended here, at the End of Time:
1004 CompileLog::finish_log(xs->out()); // write compile logging, if any, now
1006 xs->done("hotspot_log");
1007 xs->flush();
1009 fileStream* file = _log_file;
1010 _log_file = NULL;
1012 delete _outer_xmlStream;
1013 _outer_xmlStream = NULL;
1015 file->flush();
1016 delete file;
1017 }
1019 void defaultStream::finish_log_on_error(char *buf, int buflen) {
1020 xmlStream* xs = _outer_xmlStream;
1022 if (xs && xs->out()) {
1024 xs->done_raw("tty");
1026 // Other log forks are appended here, at the End of Time:
1027 CompileLog::finish_log_on_error(xs->out(), buf, buflen); // write compile logging, if any, now
1029 xs->done_raw("hotspot_log");
1030 xs->flush();
1032 fileStream* file = _log_file;
1033 _log_file = NULL;
1034 _outer_xmlStream = NULL;
1036 if (file) {
1037 file->flush();
1039 // Can't delete or close the file because delete and fclose aren't
1040 // async-safe. We are about to die, so leave it to the kernel.
1041 // delete file;
1042 }
1043 }
1044 }
1046 intx defaultStream::hold(intx writer_id) {
1047 bool has_log = has_log_file(); // check before locking
1048 if (// impossible, but who knows?
1049 writer_id == NO_WRITER ||
1051 // bootstrap problem
1052 tty_lock == NULL ||
1054 // can't grab a lock or call Thread::current() if TLS isn't initialized
1055 ThreadLocalStorage::thread() == NULL ||
1057 // developer hook
1058 !SerializeVMOutput ||
1060 // VM already unhealthy
1061 is_error_reported() ||
1063 // safepoint == global lock (for VM only)
1064 (SafepointSynchronize::is_synchronizing() &&
1065 Thread::current()->is_VM_thread())
1066 ) {
1067 // do not attempt to lock unless we know the thread and the VM is healthy
1068 return NO_WRITER;
1069 }
1070 if (_writer == writer_id) {
1071 // already held, no need to re-grab the lock
1072 return NO_WRITER;
1073 }
1074 tty_lock->lock_without_safepoint_check();
1075 // got the lock
1076 if (writer_id != _last_writer) {
1077 if (has_log) {
1078 _log_file->bol();
1079 // output a hint where this output is coming from:
1080 _log_file->print_cr("<writer thread='" UINTX_FORMAT "'/>", writer_id);
1081 }
1082 _last_writer = writer_id;
1083 }
1084 _writer = writer_id;
1085 return writer_id;
1086 }
1088 void defaultStream::release(intx holder) {
1089 if (holder == NO_WRITER) {
1090 // nothing to release: either a recursive lock, or we scribbled (too bad)
1091 return;
1092 }
1093 if (_writer != holder) {
1094 return; // already unlocked, perhaps via break_tty_lock_for_safepoint
1095 }
1096 _writer = NO_WRITER;
1097 tty_lock->unlock();
1098 }
1101 // Yuck: jio_print does not accept char*/len.
1102 static void call_jio_print(const char* s, size_t len) {
1103 char buffer[O_BUFLEN+100];
1104 if (len > sizeof(buffer)-1) {
1105 warning("increase O_BUFLEN in ostream.cpp -- output truncated");
1106 len = sizeof(buffer)-1;
1107 }
1108 strncpy(buffer, s, len);
1109 buffer[len] = '\0';
1110 jio_print(buffer);
1111 }
1114 void defaultStream::write(const char* s, size_t len) {
1115 intx thread_id = os::current_thread_id();
1116 intx holder = hold(thread_id);
1118 if (DisplayVMOutput &&
1119 (_outer_xmlStream == NULL || !_outer_xmlStream->inside_attrs())) {
1120 // print to output stream. It can be redirected by a vfprintf hook
1121 if (s[len] == '\0') {
1122 jio_print(s);
1123 } else {
1124 call_jio_print(s, len);
1125 }
1126 }
1128 // print to log file
1129 if (has_log_file()) {
1130 int nl0 = _newlines;
1131 xmlTextStream::write(s, len);
1132 // flush the log file too, if there were any newlines
1133 if (nl0 != _newlines){
1134 flush();
1135 }
1136 } else {
1137 update_position(s, len);
1138 }
1140 release(holder);
1141 }
1143 intx ttyLocker::hold_tty() {
1144 if (defaultStream::instance == NULL) return defaultStream::NO_WRITER;
1145 intx thread_id = os::current_thread_id();
1146 return defaultStream::instance->hold(thread_id);
1147 }
1149 void ttyLocker::release_tty(intx holder) {
1150 if (holder == defaultStream::NO_WRITER) return;
1151 defaultStream::instance->release(holder);
1152 }
1154 bool ttyLocker::release_tty_if_locked() {
1155 intx thread_id = os::current_thread_id();
1156 if (defaultStream::instance->writer() == thread_id) {
1157 // release the lock and return true so callers know if was
1158 // previously held.
1159 release_tty(thread_id);
1160 return true;
1161 }
1162 return false;
1163 }
1165 void ttyLocker::break_tty_lock_for_safepoint(intx holder) {
1166 if (defaultStream::instance != NULL &&
1167 defaultStream::instance->writer() == holder) {
1168 if (xtty != NULL) {
1169 xtty->print_cr("<!-- safepoint while printing -->");
1170 }
1171 defaultStream::instance->release(holder);
1172 }
1173 // (else there was no lock to break)
1174 }
1176 void ostream_init() {
1177 if (defaultStream::instance == NULL) {
1178 defaultStream::instance = new(ResourceObj::C_HEAP, mtInternal) defaultStream();
1179 tty = defaultStream::instance;
1181 // We want to ensure that time stamps in GC logs consider time 0
1182 // the time when the JVM is initialized, not the first time we ask
1183 // for a time stamp. So, here, we explicitly update the time stamp
1184 // of tty.
1185 tty->time_stamp().update_to(1);
1186 }
1187 }
1189 void ostream_init_log() {
1190 // For -Xloggc:<file> option - called in runtime/thread.cpp
1191 // Note : this must be called AFTER ostream_init()
1193 gclog_or_tty = tty; // default to tty
1194 if (Arguments::gc_log_filename() != NULL) {
1195 fileStream * gclog = new(ResourceObj::C_HEAP, mtInternal)
1196 gcLogFileStream(Arguments::gc_log_filename());
1197 if (gclog->is_open()) {
1198 // now we update the time stamp of the GC log to be synced up
1199 // with tty.
1200 gclog->time_stamp().update_to(tty->time_stamp().ticks());
1201 }
1202 gclog_or_tty = gclog;
1203 }
1205 #if INCLUDE_CDS
1206 // For -XX:DumpLoadedClassList=<file> option
1207 if (DumpLoadedClassList != NULL) {
1208 const char* list_name = make_log_name(DumpLoadedClassList, NULL);
1209 classlist_file = new(ResourceObj::C_HEAP, mtInternal)
1210 fileStream(list_name);
1211 FREE_C_HEAP_ARRAY(char, list_name, mtInternal);
1212 }
1213 #endif
1215 // If we haven't lazily initialized the logfile yet, do it now,
1216 // to avoid the possibility of lazy initialization during a VM
1217 // crash, which can affect the stability of the fatal error handler.
1218 defaultStream::instance->has_log_file();
1219 }
1221 // ostream_exit() is called during normal VM exit to finish log files, flush
1222 // output and free resource.
1223 void ostream_exit() {
1224 static bool ostream_exit_called = false;
1225 if (ostream_exit_called) return;
1226 ostream_exit_called = true;
1227 #if INCLUDE_CDS
1228 if (classlist_file != NULL) {
1229 delete classlist_file;
1230 }
1231 #endif
1232 if (gclog_or_tty != tty) {
1233 delete gclog_or_tty;
1234 }
1235 {
1236 // we temporaly disable PrintMallocFree here
1237 // as otherwise it'll lead to using of almost deleted
1238 // tty or defaultStream::instance in logging facility
1239 // of HeapFree(), see 6391258
1240 DEBUG_ONLY(FlagSetting fs(PrintMallocFree, false);)
1241 if (tty != defaultStream::instance) {
1242 delete tty;
1243 }
1244 if (defaultStream::instance != NULL) {
1245 delete defaultStream::instance;
1246 }
1247 }
1248 tty = NULL;
1249 xtty = NULL;
1250 gclog_or_tty = NULL;
1251 defaultStream::instance = NULL;
1252 }
1254 // ostream_abort() is called by os::abort() when VM is about to die.
1255 void ostream_abort() {
1256 // Here we can't delete gclog_or_tty and tty, just flush their output
1257 if (gclog_or_tty) gclog_or_tty->flush();
1258 if (tty) tty->flush();
1260 if (defaultStream::instance != NULL) {
1261 static char buf[4096];
1262 defaultStream::instance->finish_log_on_error(buf, sizeof(buf));
1263 }
1264 }
1266 staticBufferStream::staticBufferStream(char* buffer, size_t buflen,
1267 outputStream *outer_stream) {
1268 _buffer = buffer;
1269 _buflen = buflen;
1270 _outer_stream = outer_stream;
1271 // compile task prints time stamp relative to VM start
1272 _stamp.update_to(1);
1273 }
1275 void staticBufferStream::write(const char* c, size_t len) {
1276 _outer_stream->print_raw(c, (int)len);
1277 }
1279 void staticBufferStream::flush() {
1280 _outer_stream->flush();
1281 }
1283 void staticBufferStream::print(const char* format, ...) {
1284 va_list ap;
1285 va_start(ap, format);
1286 size_t len;
1287 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, false, len);
1288 write(str, len);
1289 va_end(ap);
1290 }
1292 void staticBufferStream::print_cr(const char* format, ...) {
1293 va_list ap;
1294 va_start(ap, format);
1295 size_t len;
1296 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, true, len);
1297 write(str, len);
1298 va_end(ap);
1299 }
1301 void staticBufferStream::vprint(const char *format, va_list argptr) {
1302 size_t len;
1303 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, false, len);
1304 write(str, len);
1305 }
1307 void staticBufferStream::vprint_cr(const char* format, va_list argptr) {
1308 size_t len;
1309 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, true, len);
1310 write(str, len);
1311 }
1313 bufferedStream::bufferedStream(size_t initial_size, size_t bufmax) : outputStream() {
1314 buffer_length = initial_size;
1315 buffer = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal);
1316 buffer_pos = 0;
1317 buffer_fixed = false;
1318 buffer_max = bufmax;
1319 }
1321 bufferedStream::bufferedStream(char* fixed_buffer, size_t fixed_buffer_size, size_t bufmax) : outputStream() {
1322 buffer_length = fixed_buffer_size;
1323 buffer = fixed_buffer;
1324 buffer_pos = 0;
1325 buffer_fixed = true;
1326 buffer_max = bufmax;
1327 }
1329 void bufferedStream::write(const char* s, size_t len) {
1331 if(buffer_pos + len > buffer_max) {
1332 flush();
1333 }
1335 size_t end = buffer_pos + len;
1336 if (end >= buffer_length) {
1337 if (buffer_fixed) {
1338 // if buffer cannot resize, silently truncate
1339 len = buffer_length - buffer_pos - 1;
1340 } else {
1341 // For small overruns, double the buffer. For larger ones,
1342 // increase to the requested size.
1343 if (end < buffer_length * 2) {
1344 end = buffer_length * 2;
1345 }
1346 buffer = REALLOC_C_HEAP_ARRAY(char, buffer, end, mtInternal);
1347 buffer_length = end;
1348 }
1349 }
1350 memcpy(buffer + buffer_pos, s, len);
1351 buffer_pos += len;
1352 update_position(s, len);
1353 }
1355 char* bufferedStream::as_string() {
1356 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1);
1357 strncpy(copy, buffer, buffer_pos);
1358 copy[buffer_pos] = 0; // terminating null
1359 return copy;
1360 }
1362 bufferedStream::~bufferedStream() {
1363 if (!buffer_fixed) {
1364 FREE_C_HEAP_ARRAY(char, buffer, mtInternal);
1365 }
1366 }
1368 #ifndef PRODUCT
1370 #if defined(SOLARIS) || defined(LINUX) || defined(AIX) || defined(_ALLBSD_SOURCE)
1371 #include <sys/types.h>
1372 #include <sys/socket.h>
1373 #include <netinet/in.h>
1374 #include <arpa/inet.h>
1375 #endif
1377 // Network access
1378 networkStream::networkStream() : bufferedStream(1024*10, 1024*10) {
1380 _socket = -1;
1382 int result = os::socket(AF_INET, SOCK_STREAM, 0);
1383 if (result <= 0) {
1384 assert(false, "Socket could not be created!");
1385 } else {
1386 _socket = result;
1387 }
1388 }
1390 int networkStream::read(char *buf, size_t len) {
1391 return os::recv(_socket, buf, (int)len, 0);
1392 }
1394 void networkStream::flush() {
1395 if (size() != 0) {
1396 int result = os::raw_send(_socket, (char *)base(), size(), 0);
1397 assert(result != -1, "connection error");
1398 assert(result == (int)size(), "didn't send enough data");
1399 }
1400 reset();
1401 }
1403 networkStream::~networkStream() {
1404 close();
1405 }
1407 void networkStream::close() {
1408 if (_socket != -1) {
1409 flush();
1410 os::socket_close(_socket);
1411 _socket = -1;
1412 }
1413 }
1415 bool networkStream::connect(const char *ip, short port) {
1417 struct sockaddr_in server;
1418 server.sin_family = AF_INET;
1419 server.sin_port = htons(port);
1421 server.sin_addr.s_addr = inet_addr(ip);
1422 if (server.sin_addr.s_addr == (uint32_t)-1) {
1423 struct hostent* host = os::get_host_by_name((char*)ip);
1424 if (host != NULL) {
1425 memcpy(&server.sin_addr, host->h_addr_list[0], host->h_length);
1426 } else {
1427 return false;
1428 }
1429 }
1432 int result = os::connect(_socket, (struct sockaddr*)&server, sizeof(struct sockaddr_in));
1433 return (result >= 0);
1434 }
1436 #endif