Mercurial > hg > truffle
annotate src/share/vm/utilities/ostream.cpp @ 2263:5841dc1964f0
7021531: lock ordering problems after fix for 6354181
Reviewed-by: kvn, jrose
author | never |
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date | Tue, 22 Feb 2011 15:26:36 -0800 |
parents | d8a72fbc4be7 |
children | 29524004ce17 |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
1552
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 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 | |
0 | 42 |
43 extern "C" void jio_print(const char* s); // Declarationtion of jvm method | |
44 | |
45 outputStream::outputStream(int width) { | |
46 _width = width; | |
47 _position = 0; | |
48 _newlines = 0; | |
49 _precount = 0; | |
50 _indentation = 0; | |
51 } | |
52 | |
53 outputStream::outputStream(int width, bool has_time_stamps) { | |
54 _width = width; | |
55 _position = 0; | |
56 _newlines = 0; | |
57 _precount = 0; | |
58 _indentation = 0; | |
59 if (has_time_stamps) _stamp.update(); | |
60 } | |
61 | |
62 void outputStream::update_position(const char* s, size_t len) { | |
63 for (size_t i = 0; i < len; i++) { | |
64 char ch = s[i]; | |
65 if (ch == '\n') { | |
66 _newlines += 1; | |
67 _precount += _position + 1; | |
68 _position = 0; | |
69 } else if (ch == '\t') { | |
100
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70 int tw = 8 - (_position & 7); |
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71 _position += tw; |
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72 _precount -= tw-1; // invariant: _precount + _position == total count |
0 | 73 } else { |
74 _position += 1; | |
75 } | |
76 } | |
77 } | |
78 | |
79 // Execute a vsprintf, using the given buffer if necessary. | |
80 // Return a pointer to the formatted string. | |
81 const char* outputStream::do_vsnprintf(char* buffer, size_t buflen, | |
82 const char* format, va_list ap, | |
83 bool add_cr, | |
84 size_t& result_len) { | |
85 const char* result; | |
86 if (add_cr) buflen--; | |
87 if (!strchr(format, '%')) { | |
88 // constant format string | |
89 result = format; | |
90 result_len = strlen(result); | |
91 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate | |
92 } else if (format[0] == '%' && format[1] == 's' && format[2] == '\0') { | |
93 // trivial copy-through format string | |
94 result = va_arg(ap, const char*); | |
95 result_len = strlen(result); | |
96 if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate | |
97 } else if (vsnprintf(buffer, buflen, format, ap) >= 0) { | |
98 result = buffer; | |
99 result_len = strlen(result); | |
100 } else { | |
101 DEBUG_ONLY(warning("increase O_BUFLEN in ostream.hpp -- output truncated");) | |
102 result = buffer; | |
103 result_len = buflen - 1; | |
104 buffer[result_len] = 0; | |
105 } | |
106 if (add_cr) { | |
107 if (result != buffer) { | |
108 strncpy(buffer, result, buflen); | |
109 result = buffer; | |
110 } | |
111 buffer[result_len++] = '\n'; | |
112 buffer[result_len] = 0; | |
113 } | |
114 return result; | |
115 } | |
116 | |
117 void outputStream::print(const char* format, ...) { | |
118 char buffer[O_BUFLEN]; | |
119 va_list ap; | |
120 va_start(ap, format); | |
121 size_t len; | |
122 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, false, len); | |
123 write(str, len); | |
124 va_end(ap); | |
125 } | |
126 | |
127 void outputStream::print_cr(const char* format, ...) { | |
128 char buffer[O_BUFLEN]; | |
129 va_list ap; | |
130 va_start(ap, format); | |
131 size_t len; | |
132 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, true, len); | |
133 write(str, len); | |
134 va_end(ap); | |
135 } | |
136 | |
137 void outputStream::vprint(const char *format, va_list argptr) { | |
138 char buffer[O_BUFLEN]; | |
139 size_t len; | |
140 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, false, len); | |
141 write(str, len); | |
142 } | |
143 | |
144 void outputStream::vprint_cr(const char* format, va_list argptr) { | |
145 char buffer[O_BUFLEN]; | |
146 size_t len; | |
147 const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, true, len); | |
148 write(str, len); | |
149 } | |
150 | |
151 void outputStream::fill_to(int col) { | |
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152 int need_fill = col - position(); |
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153 sp(need_fill); |
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154 } |
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155 |
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156 void outputStream::move_to(int col, int slop, int min_space) { |
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157 if (position() >= col + slop) |
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158 cr(); |
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159 int need_fill = col - position(); |
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160 if (need_fill < min_space) |
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161 need_fill = min_space; |
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162 sp(need_fill); |
0 | 163 } |
164 | |
165 void outputStream::put(char ch) { | |
166 assert(ch != 0, "please fix call site"); | |
167 char buf[] = { ch, '\0' }; | |
168 write(buf, 1); | |
169 } | |
170 | |
100
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171 #define SP_USE_TABS false |
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172 |
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173 void outputStream::sp(int count) { |
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174 if (count < 0) return; |
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175 if (SP_USE_TABS && count >= 8) { |
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176 int target = position() + count; |
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177 while (count >= 8) { |
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178 this->write("\t", 1); |
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179 count -= 8; |
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180 } |
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181 count = target - position(); |
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182 } |
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183 while (count > 0) { |
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184 int nw = (count > 8) ? 8 : count; |
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185 this->write(" ", nw); |
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186 count -= nw; |
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187 } |
0 | 188 } |
189 | |
190 void outputStream::cr() { | |
191 this->write("\n", 1); | |
192 } | |
193 | |
194 void outputStream::stamp() { | |
195 if (! _stamp.is_updated()) { | |
196 _stamp.update(); // start at 0 on first call to stamp() | |
197 } | |
198 | |
199 // outputStream::stamp() may get called by ostream_abort(), use snprintf | |
200 // to avoid allocating large stack buffer in print(). | |
201 char buf[40]; | |
202 jio_snprintf(buf, sizeof(buf), "%.3f", _stamp.seconds()); | |
203 print_raw(buf); | |
204 } | |
205 | |
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206 void outputStream::stamp(bool guard, |
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207 const char* prefix, |
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208 const char* suffix) { |
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209 if (!guard) { |
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210 return; |
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211 } |
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212 print_raw(prefix); |
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213 stamp(); |
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214 print_raw(suffix); |
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215 } |
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216 |
0 | 217 void outputStream::date_stamp(bool guard, |
218 const char* prefix, | |
219 const char* suffix) { | |
220 if (!guard) { | |
221 return; | |
222 } | |
223 print_raw(prefix); | |
224 static const char error_time[] = "yyyy-mm-ddThh:mm:ss.mmm+zzzz"; | |
225 static const int buffer_length = 32; | |
226 char buffer[buffer_length]; | |
227 const char* iso8601_result = os::iso8601_time(buffer, buffer_length); | |
228 if (iso8601_result != NULL) { | |
229 print_raw(buffer); | |
230 } else { | |
231 print_raw(error_time); | |
232 } | |
233 print_raw(suffix); | |
234 return; | |
235 } | |
236 | |
237 void outputStream::indent() { | |
238 while (_position < _indentation) sp(); | |
239 } | |
240 | |
241 void outputStream::print_jlong(jlong value) { | |
242 // N.B. Same as INT64_FORMAT | |
243 print(os::jlong_format_specifier(), value); | |
244 } | |
245 | |
246 void outputStream::print_julong(julong value) { | |
247 // N.B. Same as UINT64_FORMAT | |
248 print(os::julong_format_specifier(), value); | |
249 } | |
250 | |
251 stringStream::stringStream(size_t initial_size) : outputStream() { | |
252 buffer_length = initial_size; | |
253 buffer = NEW_RESOURCE_ARRAY(char, buffer_length); | |
254 buffer_pos = 0; | |
255 buffer_fixed = false; | |
256 } | |
257 | |
258 // useful for output to fixed chunks of memory, such as performance counters | |
259 stringStream::stringStream(char* fixed_buffer, size_t fixed_buffer_size) : outputStream() { | |
260 buffer_length = fixed_buffer_size; | |
261 buffer = fixed_buffer; | |
262 buffer_pos = 0; | |
263 buffer_fixed = true; | |
264 } | |
265 | |
266 void stringStream::write(const char* s, size_t len) { | |
267 size_t write_len = len; // number of non-null bytes to write | |
268 size_t end = buffer_pos + len + 1; // position after write and final '\0' | |
269 if (end > buffer_length) { | |
270 if (buffer_fixed) { | |
271 // if buffer cannot resize, silently truncate | |
272 end = buffer_length; | |
273 write_len = end - buffer_pos - 1; // leave room for the final '\0' | |
274 } else { | |
275 // For small overruns, double the buffer. For larger ones, | |
276 // increase to the requested size. | |
277 if (end < buffer_length * 2) { | |
278 end = buffer_length * 2; | |
279 } | |
280 char* oldbuf = buffer; | |
281 buffer = NEW_RESOURCE_ARRAY(char, end); | |
282 strncpy(buffer, oldbuf, buffer_pos); | |
283 buffer_length = end; | |
284 } | |
285 } | |
286 // invariant: buffer is always null-terminated | |
287 guarantee(buffer_pos + write_len + 1 <= buffer_length, "stringStream oob"); | |
288 buffer[buffer_pos + write_len] = 0; | |
289 strncpy(buffer + buffer_pos, s, write_len); | |
290 buffer_pos += write_len; | |
291 | |
292 // Note that the following does not depend on write_len. | |
293 // This means that position and count get updated | |
294 // even when overflow occurs. | |
295 update_position(s, len); | |
296 } | |
297 | |
298 char* stringStream::as_string() { | |
299 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1); | |
300 strncpy(copy, buffer, buffer_pos); | |
301 copy[buffer_pos] = 0; // terminating null | |
302 return copy; | |
303 } | |
304 | |
305 stringStream::~stringStream() {} | |
306 | |
307 xmlStream* xtty; | |
308 outputStream* tty; | |
309 outputStream* gclog_or_tty; | |
310 extern Mutex* tty_lock; | |
311 | |
312 fileStream::fileStream(const char* file_name) { | |
313 _file = fopen(file_name, "w"); | |
314 _need_close = true; | |
315 } | |
316 | |
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317 fileStream::fileStream(const char* file_name, const char* opentype) { |
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318 _file = fopen(file_name, opentype); |
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319 _need_close = true; |
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320 } |
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321 |
0 | 322 void fileStream::write(const char* s, size_t len) { |
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323 if (_file != NULL) { |
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324 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
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325 size_t count = fwrite(s, 1, len, _file); |
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326 } |
0 | 327 update_position(s, len); |
328 } | |
329 | |
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330 long fileStream::fileSize() { |
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331 long size = -1; |
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332 if (_file != NULL) { |
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333 long pos = ::ftell(_file); |
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334 if (::fseek(_file, 0, SEEK_END) == 0) { |
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335 size = ::ftell(_file); |
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336 } |
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337 ::fseek(_file, pos, SEEK_SET); |
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338 } |
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339 return size; |
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340 } |
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341 |
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342 char* fileStream::readln(char *data, int count ) { |
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343 char * ret = ::fgets(data, count, _file); |
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344 //Get rid of annoying \n char |
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345 data[::strlen(data)-1] = '\0'; |
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346 return ret; |
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347 } |
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348 |
0 | 349 fileStream::~fileStream() { |
350 if (_file != NULL) { | |
351 if (_need_close) fclose(_file); | |
352 _file = NULL; | |
353 } | |
354 } | |
355 | |
356 void fileStream::flush() { | |
357 fflush(_file); | |
358 } | |
359 | |
360 fdStream::fdStream(const char* file_name) { | |
361 _fd = open(file_name, O_WRONLY | O_CREAT | O_TRUNC, 0666); | |
362 _need_close = true; | |
363 } | |
364 | |
365 fdStream::~fdStream() { | |
366 if (_fd != -1) { | |
367 if (_need_close) close(_fd); | |
368 _fd = -1; | |
369 } | |
370 } | |
371 | |
372 void fdStream::write(const char* s, size_t len) { | |
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373 if (_fd != -1) { |
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374 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
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375 size_t count = ::write(_fd, s, (int)len); |
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376 } |
0 | 377 update_position(s, len); |
378 } | |
379 | |
380 defaultStream* defaultStream::instance = NULL; | |
381 int defaultStream::_output_fd = 1; | |
382 int defaultStream::_error_fd = 2; | |
383 FILE* defaultStream::_output_stream = stdout; | |
384 FILE* defaultStream::_error_stream = stderr; | |
385 | |
386 #define LOG_MAJOR_VERSION 160 | |
387 #define LOG_MINOR_VERSION 1 | |
388 | |
389 void defaultStream::init() { | |
390 _inited = true; | |
391 if (LogVMOutput || LogCompilation) { | |
392 init_log(); | |
393 } | |
394 } | |
395 | |
396 bool defaultStream::has_log_file() { | |
397 // lazily create log file (at startup, LogVMOutput is false even | |
398 // if +LogVMOutput is used, because the flags haven't been parsed yet) | |
399 // For safer printing during fatal error handling, do not init logfile | |
400 // if a VM error has been reported. | |
401 if (!_inited && !is_error_reported()) init(); | |
402 return _log_file != NULL; | |
403 } | |
404 | |
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405 static const char* make_log_name(const char* log_name, const char* force_directory) { |
0 | 406 const char* basename = log_name; |
407 char file_sep = os::file_separator()[0]; | |
408 const char* cp; | |
409 for (cp = log_name; *cp != '\0'; cp++) { | |
410 if (*cp == '/' || *cp == file_sep) { | |
411 basename = cp+1; | |
412 } | |
413 } | |
414 const char* nametail = log_name; | |
415 | |
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416 // Compute buffer length |
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417 size_t buffer_length; |
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418 if (force_directory != NULL) { |
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419 buffer_length = strlen(force_directory) + strlen(os::file_separator()) + |
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420 strlen(basename) + 1; |
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421 } else { |
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422 buffer_length = strlen(log_name) + 1; |
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423 } |
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424 |
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425 const char* star = strchr(basename, '*'); |
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426 int star_pos = (star == NULL) ? -1 : (star - nametail); |
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427 |
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428 char pid[32]; |
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429 if (star_pos >= 0) { |
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430 jio_snprintf(pid, sizeof(pid), "%u", os::current_process_id()); |
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431 buffer_length += strlen(pid); |
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432 } |
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433 |
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434 // Create big enough buffer. |
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435 char *buf = NEW_C_HEAP_ARRAY(char, buffer_length); |
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436 |
0 | 437 strcpy(buf, ""); |
438 if (force_directory != NULL) { | |
439 strcat(buf, force_directory); | |
440 strcat(buf, os::file_separator()); | |
441 nametail = basename; // completely skip directory prefix | |
442 } | |
443 | |
444 if (star_pos >= 0) { | |
445 // convert foo*bar.log to foo123bar.log | |
446 int buf_pos = (int) strlen(buf); | |
447 strncpy(&buf[buf_pos], nametail, star_pos); | |
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448 strcpy(&buf[buf_pos + star_pos], pid); |
0 | 449 nametail += star_pos + 1; // skip prefix and star |
450 } | |
451 | |
452 strcat(buf, nametail); // append rest of name, or all of name | |
453 return buf; | |
454 } | |
455 | |
456 void defaultStream::init_log() { | |
457 // %%% Need a MutexLocker? | |
458 const char* log_name = LogFile != NULL ? LogFile : "hotspot.log"; | |
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459 const char* try_name = make_log_name(log_name, NULL); |
0 | 460 fileStream* file = new(ResourceObj::C_HEAP) fileStream(try_name); |
461 if (!file->is_open()) { | |
462 // Try again to open the file. | |
463 char warnbuf[O_BUFLEN*2]; | |
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464 jio_snprintf(warnbuf, sizeof(warnbuf), |
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465 "Warning: Cannot open log file: %s\n", try_name); |
0 | 466 // Note: This feature is for maintainer use only. No need for L10N. |
467 jio_print(warnbuf); | |
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468 FREE_C_HEAP_ARRAY(char, try_name); |
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469 try_name = make_log_name("hs_pid*.log", os::get_temp_directory()); |
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470 jio_snprintf(warnbuf, sizeof(warnbuf), |
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471 "Warning: Forcing option -XX:LogFile=%s\n", try_name); |
0 | 472 jio_print(warnbuf); |
473 delete file; | |
474 file = new(ResourceObj::C_HEAP) fileStream(try_name); | |
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475 FREE_C_HEAP_ARRAY(char, try_name); |
0 | 476 } |
477 if (file->is_open()) { | |
478 _log_file = file; | |
479 xmlStream* xs = new(ResourceObj::C_HEAP) xmlStream(file); | |
480 _outer_xmlStream = xs; | |
481 if (this == tty) xtty = xs; | |
482 // Write XML header. | |
483 xs->print_cr("<?xml version='1.0' encoding='UTF-8'?>"); | |
484 // (For now, don't bother to issue a DTD for this private format.) | |
485 jlong time_ms = os::javaTimeMillis() - tty->time_stamp().milliseconds(); | |
486 // %%% Should be: jlong time_ms = os::start_time_milliseconds(), if | |
487 // we ever get round to introduce that method on the os class | |
488 xs->head("hotspot_log version='%d %d'" | |
489 " process='%d' time_ms='"INT64_FORMAT"'", | |
490 LOG_MAJOR_VERSION, LOG_MINOR_VERSION, | |
491 os::current_process_id(), time_ms); | |
492 // Write VM version header immediately. | |
493 xs->head("vm_version"); | |
494 xs->head("name"); xs->text("%s", VM_Version::vm_name()); xs->cr(); | |
495 xs->tail("name"); | |
496 xs->head("release"); xs->text("%s", VM_Version::vm_release()); xs->cr(); | |
497 xs->tail("release"); | |
498 xs->head("info"); xs->text("%s", VM_Version::internal_vm_info_string()); xs->cr(); | |
499 xs->tail("info"); | |
500 xs->tail("vm_version"); | |
501 // Record information about the command-line invocation. | |
502 xs->head("vm_arguments"); // Cf. Arguments::print_on() | |
503 if (Arguments::num_jvm_flags() > 0) { | |
504 xs->head("flags"); | |
505 Arguments::print_jvm_flags_on(xs->text()); | |
506 xs->tail("flags"); | |
507 } | |
508 if (Arguments::num_jvm_args() > 0) { | |
509 xs->head("args"); | |
510 Arguments::print_jvm_args_on(xs->text()); | |
511 xs->tail("args"); | |
512 } | |
513 if (Arguments::java_command() != NULL) { | |
514 xs->head("command"); xs->text()->print_cr("%s", Arguments::java_command()); | |
515 xs->tail("command"); | |
516 } | |
517 if (Arguments::sun_java_launcher() != NULL) { | |
518 xs->head("launcher"); xs->text()->print_cr("%s", Arguments::sun_java_launcher()); | |
519 xs->tail("launcher"); | |
520 } | |
521 if (Arguments::system_properties() != NULL) { | |
522 xs->head("properties"); | |
523 // Print it as a java-style property list. | |
524 // System properties don't generally contain newlines, so don't bother with unparsing. | |
525 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
526 xs->text()->print_cr("%s=%s", p->key(), p->value()); | |
527 } | |
528 xs->tail("properties"); | |
529 } | |
530 xs->tail("vm_arguments"); | |
531 // tty output per se is grouped under the <tty>...</tty> element. | |
532 xs->head("tty"); | |
533 // All further non-markup text gets copied to the tty: | |
534 xs->_text = this; // requires friend declaration! | |
535 } else { | |
536 delete(file); | |
537 // and leave xtty as NULL | |
538 LogVMOutput = false; | |
539 DisplayVMOutput = true; | |
540 LogCompilation = false; | |
541 } | |
542 } | |
543 | |
544 // finish_log() is called during normal VM shutdown. finish_log_on_error() is | |
545 // called by ostream_abort() after a fatal error. | |
546 // | |
547 void defaultStream::finish_log() { | |
548 xmlStream* xs = _outer_xmlStream; | |
549 xs->done("tty"); | |
550 | |
551 // Other log forks are appended here, at the End of Time: | |
552 CompileLog::finish_log(xs->out()); // write compile logging, if any, now | |
553 | |
554 xs->done("hotspot_log"); | |
555 xs->flush(); | |
556 | |
557 fileStream* file = _log_file; | |
558 _log_file = NULL; | |
559 | |
560 delete _outer_xmlStream; | |
561 _outer_xmlStream = NULL; | |
562 | |
563 file->flush(); | |
564 delete file; | |
565 } | |
566 | |
567 void defaultStream::finish_log_on_error(char *buf, int buflen) { | |
568 xmlStream* xs = _outer_xmlStream; | |
569 | |
570 if (xs && xs->out()) { | |
571 | |
572 xs->done_raw("tty"); | |
573 | |
574 // Other log forks are appended here, at the End of Time: | |
575 CompileLog::finish_log_on_error(xs->out(), buf, buflen); // write compile logging, if any, now | |
576 | |
577 xs->done_raw("hotspot_log"); | |
578 xs->flush(); | |
579 | |
580 fileStream* file = _log_file; | |
581 _log_file = NULL; | |
582 _outer_xmlStream = NULL; | |
583 | |
584 if (file) { | |
585 file->flush(); | |
586 | |
587 // Can't delete or close the file because delete and fclose aren't | |
588 // async-safe. We are about to die, so leave it to the kernel. | |
589 // delete file; | |
590 } | |
591 } | |
592 } | |
593 | |
594 intx defaultStream::hold(intx writer_id) { | |
595 bool has_log = has_log_file(); // check before locking | |
596 if (// impossible, but who knows? | |
597 writer_id == NO_WRITER || | |
598 | |
599 // bootstrap problem | |
600 tty_lock == NULL || | |
601 | |
602 // can't grab a lock or call Thread::current() if TLS isn't initialized | |
603 ThreadLocalStorage::thread() == NULL || | |
604 | |
605 // developer hook | |
606 !SerializeVMOutput || | |
607 | |
608 // VM already unhealthy | |
609 is_error_reported() || | |
610 | |
611 // safepoint == global lock (for VM only) | |
612 (SafepointSynchronize::is_synchronizing() && | |
613 Thread::current()->is_VM_thread()) | |
614 ) { | |
615 // do not attempt to lock unless we know the thread and the VM is healthy | |
616 return NO_WRITER; | |
617 } | |
618 if (_writer == writer_id) { | |
619 // already held, no need to re-grab the lock | |
620 return NO_WRITER; | |
621 } | |
622 tty_lock->lock_without_safepoint_check(); | |
623 // got the lock | |
624 if (writer_id != _last_writer) { | |
625 if (has_log) { | |
626 _log_file->bol(); | |
627 // output a hint where this output is coming from: | |
628 _log_file->print_cr("<writer thread='"INTX_FORMAT"'/>", writer_id); | |
629 } | |
630 _last_writer = writer_id; | |
631 } | |
632 _writer = writer_id; | |
633 return writer_id; | |
634 } | |
635 | |
636 void defaultStream::release(intx holder) { | |
637 if (holder == NO_WRITER) { | |
638 // nothing to release: either a recursive lock, or we scribbled (too bad) | |
639 return; | |
640 } | |
641 if (_writer != holder) { | |
642 return; // already unlocked, perhaps via break_tty_lock_for_safepoint | |
643 } | |
644 _writer = NO_WRITER; | |
645 tty_lock->unlock(); | |
646 } | |
647 | |
648 | |
649 // Yuck: jio_print does not accept char*/len. | |
650 static void call_jio_print(const char* s, size_t len) { | |
651 char buffer[O_BUFLEN+100]; | |
652 if (len > sizeof(buffer)-1) { | |
653 warning("increase O_BUFLEN in ostream.cpp -- output truncated"); | |
654 len = sizeof(buffer)-1; | |
655 } | |
656 strncpy(buffer, s, len); | |
657 buffer[len] = '\0'; | |
658 jio_print(buffer); | |
659 } | |
660 | |
661 | |
662 void defaultStream::write(const char* s, size_t len) { | |
663 intx thread_id = os::current_thread_id(); | |
664 intx holder = hold(thread_id); | |
665 | |
666 if (DisplayVMOutput && | |
667 (_outer_xmlStream == NULL || !_outer_xmlStream->inside_attrs())) { | |
668 // print to output stream. It can be redirected by a vfprintf hook | |
669 if (s[len] == '\0') { | |
670 jio_print(s); | |
671 } else { | |
672 call_jio_print(s, len); | |
673 } | |
674 } | |
675 | |
676 // print to log file | |
677 if (has_log_file()) { | |
678 int nl0 = _newlines; | |
679 xmlTextStream::write(s, len); | |
680 // flush the log file too, if there were any newlines | |
681 if (nl0 != _newlines){ | |
682 flush(); | |
683 } | |
684 } else { | |
685 update_position(s, len); | |
686 } | |
687 | |
688 release(holder); | |
689 } | |
690 | |
691 intx ttyLocker::hold_tty() { | |
692 if (defaultStream::instance == NULL) return defaultStream::NO_WRITER; | |
693 intx thread_id = os::current_thread_id(); | |
694 return defaultStream::instance->hold(thread_id); | |
695 } | |
696 | |
697 void ttyLocker::release_tty(intx holder) { | |
698 if (holder == defaultStream::NO_WRITER) return; | |
699 defaultStream::instance->release(holder); | |
700 } | |
701 | |
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702 bool ttyLocker::release_tty_if_locked() { |
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703 intx thread_id = os::current_thread_id(); |
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704 if (defaultStream::instance->writer() == thread_id) { |
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705 // release the lock and return true so callers know if was |
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706 // previously held. |
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707 release_tty(thread_id); |
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708 return true; |
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709 } |
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710 return false; |
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711 } |
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712 |
0 | 713 void ttyLocker::break_tty_lock_for_safepoint(intx holder) { |
714 if (defaultStream::instance != NULL && | |
715 defaultStream::instance->writer() == holder) { | |
716 if (xtty != NULL) { | |
717 xtty->print_cr("<!-- safepoint while printing -->"); | |
718 } | |
719 defaultStream::instance->release(holder); | |
720 } | |
721 // (else there was no lock to break) | |
722 } | |
723 | |
724 void ostream_init() { | |
725 if (defaultStream::instance == NULL) { | |
726 defaultStream::instance = new(ResourceObj::C_HEAP) defaultStream(); | |
727 tty = defaultStream::instance; | |
728 | |
729 // We want to ensure that time stamps in GC logs consider time 0 | |
730 // the time when the JVM is initialized, not the first time we ask | |
731 // for a time stamp. So, here, we explicitly update the time stamp | |
732 // of tty. | |
733 tty->time_stamp().update_to(1); | |
734 } | |
735 } | |
736 | |
737 void ostream_init_log() { | |
738 // For -Xloggc:<file> option - called in runtime/thread.cpp | |
739 // Note : this must be called AFTER ostream_init() | |
740 | |
741 gclog_or_tty = tty; // default to tty | |
742 if (Arguments::gc_log_filename() != NULL) { | |
743 fileStream * gclog = new(ResourceObj::C_HEAP) | |
744 fileStream(Arguments::gc_log_filename()); | |
745 if (gclog->is_open()) { | |
746 // now we update the time stamp of the GC log to be synced up | |
747 // with tty. | |
748 gclog->time_stamp().update_to(tty->time_stamp().ticks()); | |
749 gclog_or_tty = gclog; | |
750 } | |
751 } | |
752 | |
753 // If we haven't lazily initialized the logfile yet, do it now, | |
754 // to avoid the possibility of lazy initialization during a VM | |
755 // crash, which can affect the stability of the fatal error handler. | |
756 defaultStream::instance->has_log_file(); | |
757 } | |
758 | |
759 // ostream_exit() is called during normal VM exit to finish log files, flush | |
760 // output and free resource. | |
761 void ostream_exit() { | |
762 static bool ostream_exit_called = false; | |
763 if (ostream_exit_called) return; | |
764 ostream_exit_called = true; | |
765 if (gclog_or_tty != tty) { | |
766 delete gclog_or_tty; | |
767 } | |
768 { | |
769 // we temporaly disable PrintMallocFree here | |
770 // as otherwise it'll lead to using of almost deleted | |
771 // tty or defaultStream::instance in logging facility | |
772 // of HeapFree(), see 6391258 | |
773 DEBUG_ONLY(FlagSetting fs(PrintMallocFree, false);) | |
774 if (tty != defaultStream::instance) { | |
775 delete tty; | |
776 } | |
777 if (defaultStream::instance != NULL) { | |
778 delete defaultStream::instance; | |
779 } | |
780 } | |
781 tty = NULL; | |
782 xtty = NULL; | |
783 gclog_or_tty = NULL; | |
784 defaultStream::instance = NULL; | |
785 } | |
786 | |
787 // ostream_abort() is called by os::abort() when VM is about to die. | |
788 void ostream_abort() { | |
789 // Here we can't delete gclog_or_tty and tty, just flush their output | |
790 if (gclog_or_tty) gclog_or_tty->flush(); | |
791 if (tty) tty->flush(); | |
792 | |
793 if (defaultStream::instance != NULL) { | |
794 static char buf[4096]; | |
795 defaultStream::instance->finish_log_on_error(buf, sizeof(buf)); | |
796 } | |
797 } | |
798 | |
799 staticBufferStream::staticBufferStream(char* buffer, size_t buflen, | |
800 outputStream *outer_stream) { | |
801 _buffer = buffer; | |
802 _buflen = buflen; | |
803 _outer_stream = outer_stream; | |
804 } | |
805 | |
806 void staticBufferStream::write(const char* c, size_t len) { | |
807 _outer_stream->print_raw(c, (int)len); | |
808 } | |
809 | |
810 void staticBufferStream::flush() { | |
811 _outer_stream->flush(); | |
812 } | |
813 | |
814 void staticBufferStream::print(const char* format, ...) { | |
815 va_list ap; | |
816 va_start(ap, format); | |
817 size_t len; | |
818 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, false, len); | |
819 write(str, len); | |
820 va_end(ap); | |
821 } | |
822 | |
823 void staticBufferStream::print_cr(const char* format, ...) { | |
824 va_list ap; | |
825 va_start(ap, format); | |
826 size_t len; | |
827 const char* str = do_vsnprintf(_buffer, _buflen, format, ap, true, len); | |
828 write(str, len); | |
829 va_end(ap); | |
830 } | |
831 | |
832 void staticBufferStream::vprint(const char *format, va_list argptr) { | |
833 size_t len; | |
834 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, false, len); | |
835 write(str, len); | |
836 } | |
837 | |
838 void staticBufferStream::vprint_cr(const char* format, va_list argptr) { | |
839 size_t len; | |
840 const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, true, len); | |
841 write(str, len); | |
842 } | |
843 | |
222 | 844 bufferedStream::bufferedStream(size_t initial_size, size_t bufmax) : outputStream() { |
0 | 845 buffer_length = initial_size; |
846 buffer = NEW_C_HEAP_ARRAY(char, buffer_length); | |
847 buffer_pos = 0; | |
848 buffer_fixed = false; | |
222 | 849 buffer_max = bufmax; |
0 | 850 } |
851 | |
222 | 852 bufferedStream::bufferedStream(char* fixed_buffer, size_t fixed_buffer_size, size_t bufmax) : outputStream() { |
0 | 853 buffer_length = fixed_buffer_size; |
854 buffer = fixed_buffer; | |
855 buffer_pos = 0; | |
856 buffer_fixed = true; | |
222 | 857 buffer_max = bufmax; |
0 | 858 } |
859 | |
860 void bufferedStream::write(const char* s, size_t len) { | |
222 | 861 |
862 if(buffer_pos + len > buffer_max) { | |
863 flush(); | |
864 } | |
865 | |
0 | 866 size_t end = buffer_pos + len; |
867 if (end >= buffer_length) { | |
868 if (buffer_fixed) { | |
869 // if buffer cannot resize, silently truncate | |
870 len = buffer_length - buffer_pos - 1; | |
871 } else { | |
872 // For small overruns, double the buffer. For larger ones, | |
873 // increase to the requested size. | |
874 if (end < buffer_length * 2) { | |
875 end = buffer_length * 2; | |
876 } | |
877 buffer = REALLOC_C_HEAP_ARRAY(char, buffer, end); | |
878 buffer_length = end; | |
879 } | |
880 } | |
881 memcpy(buffer + buffer_pos, s, len); | |
882 buffer_pos += len; | |
883 update_position(s, len); | |
884 } | |
885 | |
886 char* bufferedStream::as_string() { | |
887 char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1); | |
888 strncpy(copy, buffer, buffer_pos); | |
889 copy[buffer_pos] = 0; // terminating null | |
890 return copy; | |
891 } | |
892 | |
893 bufferedStream::~bufferedStream() { | |
894 if (!buffer_fixed) { | |
895 FREE_C_HEAP_ARRAY(char, buffer); | |
896 } | |
897 } | |
898 | |
899 #ifndef PRODUCT | |
900 | |
901 #if defined(SOLARIS) || defined(LINUX) | |
902 #include <sys/types.h> | |
903 #include <sys/socket.h> | |
904 #include <netinet/in.h> | |
905 #include <arpa/inet.h> | |
906 #endif | |
907 | |
908 // Network access | |
222 | 909 networkStream::networkStream() : bufferedStream(1024*10, 1024*10) { |
0 | 910 |
911 _socket = -1; | |
912 | |
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6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
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diff
changeset
|
913 int result = os::socket(AF_INET, SOCK_STREAM, 0); |
0 | 914 if (result <= 0) { |
915 assert(false, "Socket could not be created!"); | |
916 } else { | |
917 _socket = result; | |
918 } | |
919 } | |
920 | |
921 int networkStream::read(char *buf, size_t len) { | |
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diff
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922 return os::recv(_socket, buf, (int)len, 0); |
0 | 923 } |
924 | |
925 void networkStream::flush() { | |
926 if (size() != 0) { | |
1980
828eafbd85cc
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parents:
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diff
changeset
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927 int result = os::raw_send(_socket, (char *)base(), (int)size(), 0); |
222 | 928 assert(result != -1, "connection error"); |
929 assert(result == (int)size(), "didn't send enough data"); | |
0 | 930 } |
931 reset(); | |
932 } | |
933 | |
934 networkStream::~networkStream() { | |
935 close(); | |
936 } | |
937 | |
938 void networkStream::close() { | |
939 if (_socket != -1) { | |
940 flush(); | |
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828eafbd85cc
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parents:
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diff
changeset
|
941 os::socket_close(_socket); |
0 | 942 _socket = -1; |
943 } | |
944 } | |
945 | |
946 bool networkStream::connect(const char *ip, short port) { | |
947 | |
948 struct sockaddr_in server; | |
949 server.sin_family = AF_INET; | |
950 server.sin_port = htons(port); | |
951 | |
952 server.sin_addr.s_addr = inet_addr(ip); | |
80
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diff
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953 if (server.sin_addr.s_addr == (uint32_t)-1) { |
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954 struct hostent* host = os::get_host_by_name((char*)ip); |
0 | 955 if (host != NULL) { |
956 memcpy(&server.sin_addr, host->h_addr_list[0], host->h_length); | |
957 } else { | |
958 return false; | |
959 } | |
960 } | |
961 | |
962 | |
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ikrylov
parents:
1972
diff
changeset
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963 int result = os::connect(_socket, (struct sockaddr*)&server, sizeof(struct sockaddr_in)); |
0 | 964 return (result >= 0); |
965 } | |
966 | |
967 #endif |