| File: | jdk/src/hotspot/share/utilities/ostream.cpp |
| Warning: | line 617, column 12 Value stored to 'count' during its initialization is never read |
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| 1 | /* |
| 2 | * Copyright (c) 1997, 2021, Oracle and/or its affiliates. All rights reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| 20 | * or visit www.oracle.com if you need additional information or have any |
| 21 | * questions. |
| 22 | * |
| 23 | */ |
| 24 | |
| 25 | #include "precompiled.hpp" |
| 26 | #include "jvm.h" |
| 27 | #include "cds/classListWriter.hpp" |
| 28 | #include "compiler/compileLog.hpp" |
| 29 | #include "memory/allocation.inline.hpp" |
| 30 | #include "oops/oop.inline.hpp" |
| 31 | #include "runtime/arguments.hpp" |
| 32 | #include "runtime/os.inline.hpp" |
| 33 | #include "runtime/orderAccess.hpp" |
| 34 | #include "runtime/safepoint.hpp" |
| 35 | #include "runtime/vm_version.hpp" |
| 36 | #include "utilities/defaultStream.hpp" |
| 37 | #include "utilities/macros.hpp" |
| 38 | #include "utilities/ostream.hpp" |
| 39 | #include "utilities/vmError.hpp" |
| 40 | #include "utilities/xmlstream.hpp" |
| 41 | |
| 42 | // Declarations of jvm methods |
| 43 | extern "C" void jio_print(const char* s, size_t len); |
| 44 | extern "C" int jio_printf(const char *fmt, ...); |
| 45 | |
| 46 | outputStream::outputStream(int width) { |
| 47 | _width = width; |
| 48 | _position = 0; |
| 49 | _newlines = 0; |
| 50 | _precount = 0; |
| 51 | _indentation = 0; |
| 52 | _scratch = NULL__null; |
| 53 | _scratch_len = 0; |
| 54 | } |
| 55 | |
| 56 | outputStream::outputStream(int width, bool has_time_stamps) { |
| 57 | _width = width; |
| 58 | _position = 0; |
| 59 | _newlines = 0; |
| 60 | _precount = 0; |
| 61 | _indentation = 0; |
| 62 | _scratch = NULL__null; |
| 63 | _scratch_len = 0; |
| 64 | if (has_time_stamps) _stamp.update(); |
| 65 | } |
| 66 | |
| 67 | void outputStream::update_position(const char* s, size_t len) { |
| 68 | for (size_t i = 0; i < len; i++) { |
| 69 | char ch = s[i]; |
| 70 | if (ch == '\n') { |
| 71 | _newlines += 1; |
| 72 | _precount += _position + 1; |
| 73 | _position = 0; |
| 74 | } else if (ch == '\t') { |
| 75 | int tw = 8 - (_position & 7); |
| 76 | _position += tw; |
| 77 | _precount -= tw-1; // invariant: _precount + _position == total count |
| 78 | } else { |
| 79 | _position += 1; |
| 80 | } |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | // Execute a vsprintf, using the given buffer if necessary. |
| 85 | // Return a pointer to the formatted string. |
| 86 | const char* outputStream::do_vsnprintf(char* buffer, size_t buflen, |
| 87 | const char* format, va_list ap, |
| 88 | bool add_cr, |
| 89 | size_t& result_len) { |
| 90 | assert(buflen >= 2, "buffer too small")do { if (!(buflen >= 2)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/utilities/ostream.cpp" , 90, "assert(" "buflen >= 2" ") failed", "buffer too small" ); ::breakpoint(); } } while (0); |
| 91 | |
| 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*)__builtin_va_arg(ap, const char*); |
| 102 | result_len = strlen(result); |
| 103 | if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate |
| 104 | } else { |
| 105 | int required_len = os::vsnprintf(buffer, buflen, format, ap); |
| 106 | assert(required_len >= 0, "vsnprintf encoding error")do { if (!(required_len >= 0)) { (*g_assert_poison) = 'X'; ; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/utilities/ostream.cpp" , 106, "assert(" "required_len >= 0" ") failed", "vsnprintf encoding error" ); ::breakpoint(); } } while (0); |
| 107 | result = buffer; |
| 108 | if ((size_t)required_len < buflen) { |
| 109 | result_len = required_len; |
| 110 | } else { |
| 111 | DEBUG_ONLY(warning("outputStream::do_vsnprintf output truncated -- buffer length is %d bytes but %d bytes are needed.",warning("outputStream::do_vsnprintf output truncated -- buffer length is %d bytes but %d bytes are needed." , add_cr ? (int)buflen + 1 : (int)buflen, add_cr ? required_len + 2 : required_len + 1); |
| 112 | add_cr ? (int)buflen + 1 : (int)buflen, add_cr ? required_len + 2 : required_len + 1);)warning("outputStream::do_vsnprintf output truncated -- buffer length is %d bytes but %d bytes are needed." , add_cr ? (int)buflen + 1 : (int)buflen, add_cr ? required_len + 2 : required_len + 1); |
| 113 | result_len = buflen - 1; |
| 114 | } |
| 115 | } |
| 116 | if (add_cr) { |
| 117 | if (result != buffer) { |
| 118 | memcpy(buffer, result, result_len); |
| 119 | result = buffer; |
| 120 | } |
| 121 | buffer[result_len++] = '\n'; |
| 122 | buffer[result_len] = 0; |
| 123 | } |
| 124 | return result; |
| 125 | } |
| 126 | |
| 127 | void outputStream::do_vsnprintf_and_write_with_automatic_buffer(const char* format, va_list ap, bool add_cr) { |
| 128 | char buffer[O_BUFLEN2000]; |
| 129 | size_t len; |
| 130 | const char* str = do_vsnprintf(buffer, sizeof(buffer), format, ap, add_cr, len); |
| 131 | write(str, len); |
| 132 | } |
| 133 | |
| 134 | void outputStream::do_vsnprintf_and_write_with_scratch_buffer(const char* format, va_list ap, bool add_cr) { |
| 135 | size_t len; |
| 136 | const char* str = do_vsnprintf(_scratch, _scratch_len, format, ap, add_cr, len); |
| 137 | write(str, len); |
| 138 | } |
| 139 | |
| 140 | void outputStream::do_vsnprintf_and_write(const char* format, va_list ap, bool add_cr) { |
| 141 | if (_scratch) { |
| 142 | do_vsnprintf_and_write_with_scratch_buffer(format, ap, add_cr); |
| 143 | } else { |
| 144 | do_vsnprintf_and_write_with_automatic_buffer(format, ap, add_cr); |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | void outputStream::print(const char* format, ...) { |
| 149 | va_list ap; |
| 150 | va_start(ap, format)__builtin_va_start(ap, format); |
| 151 | do_vsnprintf_and_write(format, ap, false); |
| 152 | va_end(ap)__builtin_va_end(ap); |
| 153 | } |
| 154 | |
| 155 | void outputStream::print_cr(const char* format, ...) { |
| 156 | va_list ap; |
| 157 | va_start(ap, format)__builtin_va_start(ap, format); |
| 158 | do_vsnprintf_and_write(format, ap, true); |
| 159 | va_end(ap)__builtin_va_end(ap); |
| 160 | } |
| 161 | |
| 162 | void outputStream::vprint(const char *format, va_list argptr) { |
| 163 | do_vsnprintf_and_write(format, argptr, false); |
| 164 | } |
| 165 | |
| 166 | void outputStream::vprint_cr(const char* format, va_list argptr) { |
| 167 | do_vsnprintf_and_write(format, argptr, true); |
| 168 | } |
| 169 | |
| 170 | void outputStream::fill_to(int col) { |
| 171 | int need_fill = col - position(); |
| 172 | sp(need_fill); |
| 173 | } |
| 174 | |
| 175 | void outputStream::move_to(int col, int slop, int min_space) { |
| 176 | if (position() >= col + slop) |
| 177 | cr(); |
| 178 | int need_fill = col - position(); |
| 179 | if (need_fill < min_space) |
| 180 | need_fill = min_space; |
| 181 | sp(need_fill); |
| 182 | } |
| 183 | |
| 184 | void outputStream::put(char ch) { |
| 185 | assert(ch != 0, "please fix call site")do { if (!(ch != 0)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/utilities/ostream.cpp" , 185, "assert(" "ch != 0" ") failed", "please fix call site" ); ::breakpoint(); } } while (0); |
| 186 | char buf[] = { ch, '\0' }; |
| 187 | write(buf, 1); |
| 188 | } |
| 189 | |
| 190 | #define SP_USE_TABSfalse false |
| 191 | |
| 192 | void outputStream::sp(int count) { |
| 193 | if (count < 0) return; |
| 194 | if (SP_USE_TABSfalse && count >= 8) { |
| 195 | int target = position() + count; |
| 196 | while (count >= 8) { |
| 197 | this->write("\t", 1); |
| 198 | count -= 8; |
| 199 | } |
| 200 | count = target - position(); |
| 201 | } |
| 202 | while (count > 0) { |
| 203 | int nw = (count > 8) ? 8 : count; |
| 204 | this->write(" ", nw); |
| 205 | count -= nw; |
| 206 | } |
| 207 | } |
| 208 | |
| 209 | void outputStream::cr() { |
| 210 | this->write("\n", 1); |
| 211 | } |
| 212 | |
| 213 | void outputStream::cr_indent() { |
| 214 | cr(); indent(); |
| 215 | } |
| 216 | |
| 217 | void outputStream::stamp() { |
| 218 | if (! _stamp.is_updated()) { |
| 219 | _stamp.update(); // start at 0 on first call to stamp() |
| 220 | } |
| 221 | |
| 222 | // outputStream::stamp() may get called by ostream_abort(), use snprintf |
| 223 | // to avoid allocating large stack buffer in print(). |
| 224 | char buf[40]; |
| 225 | jio_snprintf(buf, sizeof(buf), "%.3f", _stamp.seconds()); |
| 226 | print_raw(buf); |
| 227 | } |
| 228 | |
| 229 | void outputStream::stamp(bool guard, |
| 230 | const char* prefix, |
| 231 | const char* suffix) { |
| 232 | if (!guard) { |
| 233 | return; |
| 234 | } |
| 235 | print_raw(prefix); |
| 236 | stamp(); |
| 237 | print_raw(suffix); |
| 238 | } |
| 239 | |
| 240 | void outputStream::date_stamp(bool guard, |
| 241 | const char* prefix, |
| 242 | const char* suffix) { |
| 243 | if (!guard) { |
| 244 | return; |
| 245 | } |
| 246 | print_raw(prefix); |
| 247 | static const char error_time[] = "yyyy-mm-ddThh:mm:ss.mmm+zzzz"; |
| 248 | static const int buffer_length = 32; |
| 249 | char buffer[buffer_length]; |
| 250 | const char* iso8601_result = os::iso8601_time(buffer, buffer_length); |
| 251 | if (iso8601_result != NULL__null) { |
| 252 | print_raw(buffer); |
| 253 | } else { |
| 254 | print_raw(error_time); |
| 255 | } |
| 256 | print_raw(suffix); |
| 257 | return; |
| 258 | } |
| 259 | |
| 260 | outputStream& outputStream::indent() { |
| 261 | while (_position < _indentation) sp(); |
| 262 | return *this; |
| 263 | } |
| 264 | |
| 265 | void outputStream::print_jlong(jlong value) { |
| 266 | print(JLONG_FORMAT"%" "l" "d", value); |
| 267 | } |
| 268 | |
| 269 | void outputStream::print_julong(julong value) { |
| 270 | print(JULONG_FORMAT"%" "l" "u", value); |
| 271 | } |
| 272 | |
| 273 | /** |
| 274 | * This prints out hex data in a 'windbg' or 'xxd' form, where each line is: |
| 275 | * <hex-address>: 8 * <hex-halfword> <ascii translation (optional)> |
| 276 | * example: |
| 277 | * 0000000: 7f44 4f46 0102 0102 0000 0000 0000 0000 .DOF............ |
| 278 | * 0000010: 0000 0000 0000 0040 0000 0020 0000 0005 .......@... .... |
| 279 | * 0000020: 0000 0000 0000 0040 0000 0000 0000 015d .......@.......] |
| 280 | * ... |
| 281 | * |
| 282 | * indent is applied to each line. Ends with a CR. |
| 283 | */ |
| 284 | void outputStream::print_data(void* data, size_t len, bool with_ascii) { |
| 285 | size_t limit = (len + 16) / 16 * 16; |
| 286 | for (size_t i = 0; i < limit; ++i) { |
| 287 | if (i % 16 == 0) { |
| 288 | indent().print(INTPTR_FORMAT_W(07)"%" "07" "l" "x" ":", i); |
| 289 | } |
| 290 | if (i % 2 == 0) { |
| 291 | print(" "); |
| 292 | } |
| 293 | if (i < len) { |
| 294 | print("%02x", ((unsigned char*)data)[i]); |
| 295 | } else { |
| 296 | print(" "); |
| 297 | } |
| 298 | if ((i + 1) % 16 == 0) { |
| 299 | if (with_ascii) { |
| 300 | print(" "); |
| 301 | for (size_t j = 0; j < 16; ++j) { |
| 302 | size_t idx = i + j - 15; |
| 303 | if (idx < len) { |
| 304 | char c = ((char*)data)[idx]; |
| 305 | print("%c", c >= 32 && c <= 126 ? c : '.'); |
| 306 | } |
| 307 | } |
| 308 | } |
| 309 | cr(); |
| 310 | } |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | stringStream::stringStream(size_t initial_capacity) : |
| 315 | outputStream(), |
| 316 | _buffer(_small_buffer), |
| 317 | _written(0), |
| 318 | _capacity(sizeof(_small_buffer)), |
| 319 | _is_fixed(false) |
| 320 | { |
| 321 | if (initial_capacity > _capacity) { |
| 322 | grow(initial_capacity); |
| 323 | } |
| 324 | zero_terminate(); |
| 325 | } |
| 326 | |
| 327 | // useful for output to fixed chunks of memory, such as performance counters |
| 328 | stringStream::stringStream(char* fixed_buffer, size_t fixed_buffer_size) : |
| 329 | outputStream(), |
| 330 | _buffer(fixed_buffer), |
| 331 | _written(0), |
| 332 | _capacity(fixed_buffer_size), |
| 333 | _is_fixed(true) |
| 334 | { |
| 335 | zero_terminate(); |
| 336 | } |
| 337 | |
| 338 | // Grow backing buffer to desired capacity. Don't call for fixed buffers |
| 339 | void stringStream::grow(size_t new_capacity) { |
| 340 | assert(!_is_fixed, "Don't call for caller provided buffers")do { if (!(!_is_fixed)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/utilities/ostream.cpp" , 340, "assert(" "!_is_fixed" ") failed", "Don't call for caller provided buffers" ); ::breakpoint(); } } while (0); |
| 341 | assert(new_capacity > _capacity, "Sanity")do { if (!(new_capacity > _capacity)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/utilities/ostream.cpp" , 341, "assert(" "new_capacity > _capacity" ") failed", "Sanity" ); ::breakpoint(); } } while (0); |
| 342 | assert(new_capacity > sizeof(_small_buffer), "Sanity")do { if (!(new_capacity > sizeof(_small_buffer))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/utilities/ostream.cpp" , 342, "assert(" "new_capacity > sizeof(_small_buffer)" ") failed" , "Sanity"); ::breakpoint(); } } while (0); |
| 343 | if (_buffer == _small_buffer) { |
| 344 | _buffer = NEW_C_HEAP_ARRAY(char, new_capacity, mtInternal)(char*) (AllocateHeap((new_capacity) * sizeof(char), mtInternal )); |
| 345 | _capacity = new_capacity; |
| 346 | if (_written > 0) { |
| 347 | ::memcpy(_buffer, _small_buffer, _written); |
| 348 | } |
| 349 | zero_terminate(); |
| 350 | } else { |
| 351 | _buffer = REALLOC_C_HEAP_ARRAY(char, _buffer, new_capacity, mtInternal)(char*) (ReallocateHeap((char*)(_buffer), (new_capacity) * sizeof (char), mtInternal)); |
| 352 | _capacity = new_capacity; |
| 353 | } |
| 354 | } |
| 355 | |
| 356 | void stringStream::write(const char* s, size_t len) { |
| 357 | assert(_capacity >= _written + 1, "Sanity")do { if (!(_capacity >= _written + 1)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/utilities/ostream.cpp" , 357, "assert(" "_capacity >= _written + 1" ") failed", "Sanity" ); ::breakpoint(); } } while (0); |
| 358 | if (len == 0) { |
| 359 | return; |
| 360 | } |
| 361 | const size_t reasonable_max_len = 1 * G; |
| 362 | if (len >= reasonable_max_len) { |
| 363 | assert(false, "bad length? (" SIZE_FORMAT ")", len)do { if (!(false)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/utilities/ostream.cpp" , 363, "assert(" "false" ") failed", "bad length? (" "%" "l" "u" ")", len); ::breakpoint(); } } while (0); |
| 364 | return; |
| 365 | } |
| 366 | size_t write_len = 0; |
| 367 | if (_is_fixed) { |
| 368 | write_len = MIN2(len, _capacity - _written - 1); |
| 369 | } else { |
| 370 | write_len = len; |
| 371 | size_t needed = _written + len + 1; |
| 372 | if (needed > _capacity) { |
| 373 | grow(MAX2(needed, _capacity * 2)); |
| 374 | } |
| 375 | } |
| 376 | assert(_written + write_len + 1 <= _capacity, "stringStream oob")do { if (!(_written + write_len + 1 <= _capacity)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/utilities/ostream.cpp" , 376, "assert(" "_written + write_len + 1 <= _capacity" ") failed" , "stringStream oob"); ::breakpoint(); } } while (0); |
| 377 | if (write_len > 0) { |
| 378 | ::memcpy(_buffer + _written, s, write_len); |
| 379 | _written += write_len; |
| 380 | zero_terminate(); |
| 381 | } |
| 382 | |
| 383 | // Note that the following does not depend on write_len. |
| 384 | // This means that position and count get updated |
| 385 | // even when overflow occurs. |
| 386 | update_position(s, len); |
| 387 | } |
| 388 | |
| 389 | void stringStream::zero_terminate() { |
| 390 | assert(_buffer != NULL &&do { if (!(_buffer != __null && _written < _capacity )) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/utilities/ostream.cpp" , 391, "assert(" "_buffer != __null && _written < _capacity" ") failed", "sanity"); ::breakpoint(); } } while (0) |
| 391 | _written < _capacity, "sanity")do { if (!(_buffer != __null && _written < _capacity )) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/utilities/ostream.cpp" , 391, "assert(" "_buffer != __null && _written < _capacity" ") failed", "sanity"); ::breakpoint(); } } while (0); |
| 392 | _buffer[_written] = '\0'; |
| 393 | } |
| 394 | |
| 395 | void stringStream::reset() { |
| 396 | _written = 0; _precount = 0; _position = 0; |
| 397 | _newlines = 0; |
| 398 | zero_terminate(); |
| 399 | } |
| 400 | |
| 401 | char* stringStream::as_string(bool c_heap) const { |
| 402 | char* copy = c_heap ? |
| 403 | NEW_C_HEAP_ARRAY(char, _written + 1, mtInternal)(char*) (AllocateHeap((_written + 1) * sizeof(char), mtInternal )) : NEW_RESOURCE_ARRAY(char, _written + 1)(char*) resource_allocate_bytes((_written + 1) * sizeof(char) ); |
| 404 | ::memcpy(copy, _buffer, _written); |
| 405 | copy[_written] = 0; // terminating null |
| 406 | if (c_heap) { |
| 407 | // Need to ensure our content is written to memory before we return |
| 408 | // the pointer to it. |
| 409 | OrderAccess::storestore(); |
| 410 | } |
| 411 | return copy; |
| 412 | } |
| 413 | |
| 414 | stringStream::~stringStream() { |
| 415 | if (!_is_fixed && _buffer != _small_buffer) { |
| 416 | FREE_C_HEAP_ARRAY(char, _buffer)FreeHeap((char*)(_buffer)); |
| 417 | } |
| 418 | } |
| 419 | |
| 420 | xmlStream* xtty; |
| 421 | outputStream* tty; |
| 422 | extern Mutex* tty_lock; |
| 423 | |
| 424 | #define EXTRACHARLEN32 32 |
| 425 | #define CURRENTAPPX".current" ".current" |
| 426 | // convert YYYY-MM-DD HH:MM:SS to YYYY-MM-DD_HH-MM-SS |
| 427 | char* get_datetime_string(char *buf, size_t len) { |
| 428 | os::local_time_string(buf, len); |
| 429 | int i = (int)strlen(buf); |
| 430 | while (--i >= 0) { |
| 431 | if (buf[i] == ' ') buf[i] = '_'; |
| 432 | else if (buf[i] == ':') buf[i] = '-'; |
| 433 | } |
| 434 | return buf; |
| 435 | } |
| 436 | |
| 437 | static const char* make_log_name_internal(const char* log_name, const char* force_directory, |
| 438 | int pid, const char* tms) { |
| 439 | const char* basename = log_name; |
| 440 | char file_sep = os::file_separator()[0]; |
| 441 | const char* cp; |
| 442 | char pid_text[32]; |
| 443 | |
| 444 | for (cp = log_name; *cp != '\0'; cp++) { |
| 445 | if (*cp == '/' || *cp == file_sep) { |
| 446 | basename = cp + 1; |
| 447 | } |
| 448 | } |
| 449 | const char* nametail = log_name; |
| 450 | // Compute buffer length |
| 451 | size_t buffer_length; |
| 452 | if (force_directory != NULL__null) { |
| 453 | buffer_length = strlen(force_directory) + strlen(os::file_separator()) + |
| 454 | strlen(basename) + 1; |
| 455 | } else { |
| 456 | buffer_length = strlen(log_name) + 1; |
| 457 | } |
| 458 | |
| 459 | const char* pts = strstr(basename, "%p"); |
| 460 | int pid_pos = (pts == NULL__null) ? -1 : (pts - nametail); |
| 461 | |
| 462 | if (pid_pos >= 0) { |
| 463 | jio_snprintf(pid_text, sizeof(pid_text), "pid%u", pid); |
| 464 | buffer_length += strlen(pid_text); |
| 465 | } |
| 466 | |
| 467 | pts = strstr(basename, "%t"); |
| 468 | int tms_pos = (pts == NULL__null) ? -1 : (pts - nametail); |
| 469 | if (tms_pos >= 0) { |
| 470 | buffer_length += strlen(tms); |
| 471 | } |
| 472 | |
| 473 | // File name is too long. |
| 474 | if (buffer_length > JVM_MAXPATHLEN4096 + 1) { |
| 475 | return NULL__null; |
| 476 | } |
| 477 | |
| 478 | // Create big enough buffer. |
| 479 | char *buf = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal)(char*) (AllocateHeap((buffer_length) * sizeof(char), mtInternal )); |
| 480 | |
| 481 | strcpy(buf, ""); |
| 482 | if (force_directory != NULL__null) { |
| 483 | strcat(buf, force_directory); |
| 484 | strcat(buf, os::file_separator()); |
| 485 | nametail = basename; // completely skip directory prefix |
| 486 | } |
| 487 | |
| 488 | // who is first, %p or %t? |
| 489 | int first = -1, second = -1; |
| 490 | const char *p1st = NULL__null; |
| 491 | const char *p2nd = NULL__null; |
| 492 | |
| 493 | if (pid_pos >= 0 && tms_pos >= 0) { |
| 494 | // contains both %p and %t |
| 495 | if (pid_pos < tms_pos) { |
| 496 | // case foo%pbar%tmonkey.log |
| 497 | first = pid_pos; |
| 498 | p1st = pid_text; |
| 499 | second = tms_pos; |
| 500 | p2nd = tms; |
| 501 | } else { |
| 502 | // case foo%tbar%pmonkey.log |
| 503 | first = tms_pos; |
| 504 | p1st = tms; |
| 505 | second = pid_pos; |
| 506 | p2nd = pid_text; |
| 507 | } |
| 508 | } else if (pid_pos >= 0) { |
| 509 | // contains %p only |
| 510 | first = pid_pos; |
| 511 | p1st = pid_text; |
| 512 | } else if (tms_pos >= 0) { |
| 513 | // contains %t only |
| 514 | first = tms_pos; |
| 515 | p1st = tms; |
| 516 | } |
| 517 | |
| 518 | int buf_pos = (int)strlen(buf); |
| 519 | const char* tail = nametail; |
| 520 | |
| 521 | if (first >= 0) { |
| 522 | tail = nametail + first + 2; |
| 523 | strncpy(&buf[buf_pos], nametail, first); |
| 524 | strcpy(&buf[buf_pos + first], p1st); |
| 525 | buf_pos = (int)strlen(buf); |
| 526 | if (second >= 0) { |
| 527 | strncpy(&buf[buf_pos], tail, second - first - 2); |
| 528 | strcpy(&buf[buf_pos + second - first - 2], p2nd); |
| 529 | tail = nametail + second + 2; |
| 530 | } |
| 531 | } |
| 532 | strcat(buf, tail); // append rest of name, or all of name |
| 533 | return buf; |
| 534 | } |
| 535 | |
| 536 | // log_name comes from -XX:LogFile=log_name or |
| 537 | // -XX:DumpLoadedClassList=<file_name> |
| 538 | // in log_name, %p => pid1234 and |
| 539 | // %t => YYYY-MM-DD_HH-MM-SS |
| 540 | const char* make_log_name(const char* log_name, const char* force_directory) { |
| 541 | char timestr[32]; |
| 542 | get_datetime_string(timestr, sizeof(timestr)); |
| 543 | return make_log_name_internal(log_name, force_directory, os::current_process_id(), |
| 544 | timestr); |
| 545 | } |
| 546 | |
| 547 | fileStream::fileStream(const char* file_name) { |
| 548 | _file = fopen(file_name, "w"); |
| 549 | if (_file != NULL__null) { |
| 550 | _need_close = true; |
| 551 | } else { |
| 552 | warning("Cannot open file %s due to %s\n", file_name, os::strerror(errno(*__errno_location ()))); |
| 553 | _need_close = false; |
| 554 | } |
| 555 | } |
| 556 | |
| 557 | fileStream::fileStream(const char* file_name, const char* opentype) { |
| 558 | _file = fopen(file_name, opentype); |
| 559 | if (_file != NULL__null) { |
| 560 | _need_close = true; |
| 561 | } else { |
| 562 | warning("Cannot open file %s due to %s\n", file_name, os::strerror(errno(*__errno_location ()))); |
| 563 | _need_close = false; |
| 564 | } |
| 565 | } |
| 566 | |
| 567 | void fileStream::write(const char* s, size_t len) { |
| 568 | if (_file != NULL__null) { |
| 569 | // Make an unused local variable to avoid warning from gcc compiler. |
| 570 | size_t count = fwrite(s, 1, len, _file); |
| 571 | update_position(s, len); |
| 572 | } |
| 573 | } |
| 574 | |
| 575 | long fileStream::fileSize() { |
| 576 | long size = -1; |
| 577 | if (_file != NULL__null) { |
| 578 | long pos = ::ftell(_file); |
| 579 | if (pos < 0) return pos; |
| 580 | if (::fseek(_file, 0, SEEK_END2) == 0) { |
| 581 | size = ::ftell(_file); |
| 582 | } |
| 583 | ::fseek(_file, pos, SEEK_SET0); |
| 584 | } |
| 585 | return size; |
| 586 | } |
| 587 | |
| 588 | char* fileStream::readln(char *data, int count ) { |
| 589 | char * ret = NULL__null; |
| 590 | if (_file != NULL__null) { |
| 591 | ret = ::fgets(data, count, _file); |
| 592 | // Get rid of annoying \n char only if it is present. |
| 593 | size_t len = ::strlen(data); |
| 594 | if (len > 0 && data[len - 1] == '\n') { |
| 595 | data[len - 1] = '\0'; |
| 596 | } |
| 597 | } |
| 598 | return ret; |
| 599 | } |
| 600 | |
| 601 | fileStream::~fileStream() { |
| 602 | if (_file != NULL__null) { |
| 603 | if (_need_close) fclose(_file); |
| 604 | _file = NULL__null; |
| 605 | } |
| 606 | } |
| 607 | |
| 608 | void fileStream::flush() { |
| 609 | if (_file != NULL__null) { |
| 610 | fflush(_file); |
| 611 | } |
| 612 | } |
| 613 | |
| 614 | void fdStream::write(const char* s, size_t len) { |
| 615 | if (_fd != -1) { |
| 616 | // Make an unused local variable to avoid warning from gcc compiler. |
| 617 | size_t count = ::write(_fd, s, (int)len); |
Value stored to 'count' during its initialization is never read | |
| 618 | update_position(s, len); |
| 619 | } |
| 620 | } |
| 621 | |
| 622 | defaultStream* defaultStream::instance = NULL__null; |
| 623 | int defaultStream::_output_fd = 1; |
| 624 | int defaultStream::_error_fd = 2; |
| 625 | FILE* defaultStream::_output_stream = stdoutstdout; |
| 626 | FILE* defaultStream::_error_stream = stderrstderr; |
| 627 | |
| 628 | #define LOG_MAJOR_VERSION160 160 |
| 629 | #define LOG_MINOR_VERSION1 1 |
| 630 | |
| 631 | void defaultStream::init() { |
| 632 | _inited = true; |
| 633 | if (LogVMOutput || LogCompilation) { |
| 634 | init_log(); |
| 635 | } |
| 636 | } |
| 637 | |
| 638 | bool defaultStream::has_log_file() { |
| 639 | // lazily create log file (at startup, LogVMOutput is false even |
| 640 | // if +LogVMOutput is used, because the flags haven't been parsed yet) |
| 641 | // For safer printing during fatal error handling, do not init logfile |
| 642 | // if a VM error has been reported. |
| 643 | if (!_inited && !VMError::is_error_reported()) init(); |
| 644 | return _log_file != NULL__null; |
| 645 | } |
| 646 | |
| 647 | fileStream* defaultStream::open_file(const char* log_name) { |
| 648 | const char* try_name = make_log_name(log_name, NULL__null); |
| 649 | if (try_name == NULL__null) { |
| 650 | warning("Cannot open file %s: file name is too long.\n", log_name); |
| 651 | return NULL__null; |
| 652 | } |
| 653 | |
| 654 | fileStream* file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name); |
| 655 | FREE_C_HEAP_ARRAY(char, try_name)FreeHeap((char*)(try_name)); |
| 656 | if (file->is_open()) { |
| 657 | return file; |
| 658 | } |
| 659 | |
| 660 | // Try again to open the file in the temp directory. |
| 661 | delete file; |
| 662 | // Note: This feature is for maintainer use only. No need for L10N. |
| 663 | jio_printf("Warning: Cannot open log file: %s\n", log_name); |
| 664 | try_name = make_log_name(log_name, os::get_temp_directory()); |
| 665 | if (try_name == NULL__null) { |
| 666 | warning("Cannot open file %s: file name is too long for directory %s.\n", log_name, os::get_temp_directory()); |
| 667 | return NULL__null; |
| 668 | } |
| 669 | |
| 670 | jio_printf("Warning: Forcing option -XX:LogFile=%s\n", try_name); |
| 671 | |
| 672 | file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name); |
| 673 | FREE_C_HEAP_ARRAY(char, try_name)FreeHeap((char*)(try_name)); |
| 674 | if (file->is_open()) { |
| 675 | return file; |
| 676 | } |
| 677 | |
| 678 | delete file; |
| 679 | return NULL__null; |
| 680 | } |
| 681 | |
| 682 | void defaultStream::init_log() { |
| 683 | // %%% Need a MutexLocker? |
| 684 | const char* log_name = LogFile != NULL__null ? LogFile : "hotspot_%p.log"; |
| 685 | fileStream* file = open_file(log_name); |
| 686 | |
| 687 | if (file != NULL__null) { |
| 688 | _log_file = file; |
| 689 | _outer_xmlStream = new(ResourceObj::C_HEAP, mtInternal) xmlStream(file); |
| 690 | start_log(); |
| 691 | } else { |
| 692 | // and leave xtty as NULL |
| 693 | LogVMOutput = false; |
| 694 | DisplayVMOutput = true; |
| 695 | LogCompilation = false; |
| 696 | } |
| 697 | } |
| 698 | |
| 699 | void defaultStream::start_log() { |
| 700 | xmlStream*xs = _outer_xmlStream; |
| 701 | if (this == tty) xtty = xs; |
| 702 | // Write XML header. |
| 703 | xs->print_cr("<?xml version='1.0' encoding='UTF-8'?>"); |
| 704 | // (For now, don't bother to issue a DTD for this private format.) |
| 705 | |
| 706 | // Calculate the start time of the log as ms since the epoch: this is |
| 707 | // the current time in ms minus the uptime in ms. |
| 708 | jlong time_ms = os::javaTimeMillis() - tty->time_stamp().milliseconds(); |
| 709 | xs->head("hotspot_log version='%d %d'" |
| 710 | " process='%d' time_ms='" INT64_FORMAT"%" "l" "d" "'", |
| 711 | LOG_MAJOR_VERSION160, LOG_MINOR_VERSION1, |
| 712 | os::current_process_id(), (int64_t)time_ms); |
| 713 | // Write VM version header immediately. |
| 714 | xs->head("vm_version"); |
| 715 | xs->head("name"); xs->text("%s", VM_Version::vm_name()); xs->cr(); |
| 716 | xs->tail("name"); |
| 717 | xs->head("release"); xs->text("%s", VM_Version::vm_release()); xs->cr(); |
| 718 | xs->tail("release"); |
| 719 | xs->head("info"); xs->text("%s", VM_Version::internal_vm_info_string()); xs->cr(); |
| 720 | xs->tail("info"); |
| 721 | xs->tail("vm_version"); |
| 722 | // Record information about the command-line invocation. |
| 723 | xs->head("vm_arguments"); // Cf. Arguments::print_on() |
| 724 | if (Arguments::num_jvm_flags() > 0) { |
| 725 | xs->head("flags"); |
| 726 | Arguments::print_jvm_flags_on(xs->text()); |
| 727 | xs->tail("flags"); |
| 728 | } |
| 729 | if (Arguments::num_jvm_args() > 0) { |
| 730 | xs->head("args"); |
| 731 | Arguments::print_jvm_args_on(xs->text()); |
| 732 | xs->tail("args"); |
| 733 | } |
| 734 | if (Arguments::java_command() != NULL__null) { |
| 735 | xs->head("command"); xs->text()->print_cr("%s", Arguments::java_command()); |
| 736 | xs->tail("command"); |
| 737 | } |
| 738 | if (Arguments::sun_java_launcher() != NULL__null) { |
| 739 | xs->head("launcher"); xs->text()->print_cr("%s", Arguments::sun_java_launcher()); |
| 740 | xs->tail("launcher"); |
| 741 | } |
| 742 | if (Arguments::system_properties() != NULL__null) { |
| 743 | xs->head("properties"); |
| 744 | // Print it as a java-style property list. |
| 745 | // System properties don't generally contain newlines, so don't bother with unparsing. |
| 746 | outputStream *text = xs->text(); |
| 747 | for (SystemProperty* p = Arguments::system_properties(); p != NULL__null; p = p->next()) { |
| 748 | assert(p->key() != NULL, "p->key() is NULL")do { if (!(p->key() != __null)) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/utilities/ostream.cpp" , 748, "assert(" "p->key() != __null" ") failed", "p->key() is NULL" ); ::breakpoint(); } } while (0); |
| 749 | if (p->is_readable()) { |
| 750 | // Print in two stages to avoid problems with long |
| 751 | // keys/values. |
| 752 | text->print_raw(p->key()); |
| 753 | text->put('='); |
| 754 | assert(p->value() != NULL, "p->value() is NULL")do { if (!(p->value() != __null)) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/utilities/ostream.cpp" , 754, "assert(" "p->value() != __null" ") failed", "p->value() is NULL" ); ::breakpoint(); } } while (0); |
| 755 | text->print_raw_cr(p->value()); |
| 756 | } |
| 757 | } |
| 758 | xs->tail("properties"); |
| 759 | } |
| 760 | xs->tail("vm_arguments"); |
| 761 | // tty output per se is grouped under the <tty>...</tty> element. |
| 762 | xs->head("tty"); |
| 763 | // All further non-markup text gets copied to the tty: |
| 764 | xs->_text = this; // requires friend declaration! |
| 765 | } |
| 766 | |
| 767 | // finish_log() is called during normal VM shutdown. finish_log_on_error() is |
| 768 | // called by ostream_abort() after a fatal error. |
| 769 | // |
| 770 | void defaultStream::finish_log() { |
| 771 | xmlStream* xs = _outer_xmlStream; |
| 772 | xs->done("tty"); |
| 773 | |
| 774 | // Other log forks are appended here, at the End of Time: |
| 775 | CompileLog::finish_log(xs->out()); // write compile logging, if any, now |
| 776 | |
| 777 | xs->done("hotspot_log"); |
| 778 | xs->flush(); |
| 779 | |
| 780 | fileStream* file = _log_file; |
| 781 | _log_file = NULL__null; |
| 782 | |
| 783 | delete _outer_xmlStream; |
| 784 | _outer_xmlStream = NULL__null; |
| 785 | |
| 786 | file->flush(); |
| 787 | delete file; |
| 788 | } |
| 789 | |
| 790 | void defaultStream::finish_log_on_error(char *buf, int buflen) { |
| 791 | xmlStream* xs = _outer_xmlStream; |
| 792 | |
| 793 | if (xs && xs->out()) { |
| 794 | |
| 795 | xs->done_raw("tty"); |
| 796 | |
| 797 | // Other log forks are appended here, at the End of Time: |
| 798 | CompileLog::finish_log_on_error(xs->out(), buf, buflen); // write compile logging, if any, now |
| 799 | |
| 800 | xs->done_raw("hotspot_log"); |
| 801 | xs->flush(); |
| 802 | |
| 803 | fileStream* file = _log_file; |
| 804 | _log_file = NULL__null; |
| 805 | _outer_xmlStream = NULL__null; |
| 806 | |
| 807 | if (file) { |
| 808 | file->flush(); |
| 809 | |
| 810 | // Can't delete or close the file because delete and fclose aren't |
| 811 | // async-safe. We are about to die, so leave it to the kernel. |
| 812 | // delete file; |
| 813 | } |
| 814 | } |
| 815 | } |
| 816 | |
| 817 | intx defaultStream::hold(intx writer_id) { |
| 818 | bool has_log = has_log_file(); // check before locking |
| 819 | if (// impossible, but who knows? |
| 820 | writer_id == NO_WRITER || |
| 821 | |
| 822 | // bootstrap problem |
| 823 | tty_lock == NULL__null || |
| 824 | |
| 825 | // can't grab a lock if current Thread isn't set |
| 826 | Thread::current_or_null() == NULL__null || |
| 827 | |
| 828 | // developer hook |
| 829 | !SerializeVMOutput || |
| 830 | |
| 831 | // VM already unhealthy |
| 832 | VMError::is_error_reported() || |
| 833 | |
| 834 | // safepoint == global lock (for VM only) |
| 835 | (SafepointSynchronize::is_synchronizing() && |
| 836 | Thread::current()->is_VM_thread()) |
| 837 | ) { |
| 838 | // do not attempt to lock unless we know the thread and the VM is healthy |
| 839 | return NO_WRITER; |
| 840 | } |
| 841 | if (_writer == writer_id) { |
| 842 | // already held, no need to re-grab the lock |
| 843 | return NO_WRITER; |
| 844 | } |
| 845 | tty_lock->lock_without_safepoint_check(); |
| 846 | // got the lock |
| 847 | if (writer_id != _last_writer) { |
| 848 | if (has_log) { |
| 849 | _log_file->bol(); |
| 850 | // output a hint where this output is coming from: |
| 851 | _log_file->print_cr("<writer thread='" UINTX_FORMAT"%" "l" "u" "'/>", writer_id); |
| 852 | } |
| 853 | _last_writer = writer_id; |
| 854 | } |
| 855 | _writer = writer_id; |
| 856 | return writer_id; |
| 857 | } |
| 858 | |
| 859 | void defaultStream::release(intx holder) { |
| 860 | if (holder == NO_WRITER) { |
| 861 | // nothing to release: either a recursive lock, or we scribbled (too bad) |
| 862 | return; |
| 863 | } |
| 864 | if (_writer != holder) { |
| 865 | return; // already unlocked, perhaps via break_tty_lock_for_safepoint |
| 866 | } |
| 867 | _writer = NO_WRITER; |
| 868 | tty_lock->unlock(); |
| 869 | } |
| 870 | |
| 871 | void defaultStream::write(const char* s, size_t len) { |
| 872 | intx thread_id = os::current_thread_id(); |
| 873 | intx holder = hold(thread_id); |
| 874 | |
| 875 | if (DisplayVMOutput && |
| 876 | (_outer_xmlStream == NULL__null || !_outer_xmlStream->inside_attrs())) { |
| 877 | // print to output stream. It can be redirected by a vfprintf hook |
| 878 | jio_print(s, len); |
| 879 | } |
| 880 | |
| 881 | // print to log file |
| 882 | if (has_log_file()) { |
| 883 | int nl0 = _newlines; |
| 884 | xmlTextStream::write(s, len); |
| 885 | // flush the log file too, if there were any newlines |
| 886 | if (nl0 != _newlines){ |
| 887 | flush(); |
| 888 | } |
| 889 | } else { |
| 890 | update_position(s, len); |
| 891 | } |
| 892 | |
| 893 | release(holder); |
| 894 | } |
| 895 | |
| 896 | intx ttyLocker::hold_tty() { |
| 897 | if (defaultStream::instance == NULL__null) return defaultStream::NO_WRITER; |
| 898 | intx thread_id = os::current_thread_id(); |
| 899 | return defaultStream::instance->hold(thread_id); |
| 900 | } |
| 901 | |
| 902 | void ttyLocker::release_tty(intx holder) { |
| 903 | if (holder == defaultStream::NO_WRITER) return; |
| 904 | defaultStream::instance->release(holder); |
| 905 | } |
| 906 | |
| 907 | bool ttyLocker::release_tty_if_locked() { |
| 908 | intx thread_id = os::current_thread_id(); |
| 909 | if (defaultStream::instance->writer() == thread_id) { |
| 910 | // release the lock and return true so callers know if was |
| 911 | // previously held. |
| 912 | release_tty(thread_id); |
| 913 | return true; |
| 914 | } |
| 915 | return false; |
| 916 | } |
| 917 | |
| 918 | void ttyLocker::break_tty_lock_for_safepoint(intx holder) { |
| 919 | if (defaultStream::instance != NULL__null && |
| 920 | defaultStream::instance->writer() == holder) { |
| 921 | if (xtty != NULL__null) { |
| 922 | xtty->print_cr("<!-- safepoint while printing -->"); |
| 923 | } |
| 924 | defaultStream::instance->release(holder); |
| 925 | } |
| 926 | // (else there was no lock to break) |
| 927 | } |
| 928 | |
| 929 | void ostream_init() { |
| 930 | if (defaultStream::instance == NULL__null) { |
| 931 | defaultStream::instance = new(ResourceObj::C_HEAP, mtInternal) defaultStream(); |
| 932 | tty = defaultStream::instance; |
| 933 | |
| 934 | // We want to ensure that time stamps in GC logs consider time 0 |
| 935 | // the time when the JVM is initialized, not the first time we ask |
| 936 | // for a time stamp. So, here, we explicitly update the time stamp |
| 937 | // of tty. |
| 938 | tty->time_stamp().update_to(1); |
| 939 | } |
| 940 | } |
| 941 | |
| 942 | void ostream_init_log() { |
| 943 | // Note : this must be called AFTER ostream_init() |
| 944 | |
| 945 | ClassListWriter::init(); |
| 946 | |
| 947 | // If we haven't lazily initialized the logfile yet, do it now, |
| 948 | // to avoid the possibility of lazy initialization during a VM |
| 949 | // crash, which can affect the stability of the fatal error handler. |
| 950 | defaultStream::instance->has_log_file(); |
| 951 | } |
| 952 | |
| 953 | // ostream_exit() is called during normal VM exit to finish log files, flush |
| 954 | // output and free resource. |
| 955 | void ostream_exit() { |
| 956 | static bool ostream_exit_called = false; |
| 957 | if (ostream_exit_called) return; |
| 958 | ostream_exit_called = true; |
| 959 | ClassListWriter::delete_classlist(); |
| 960 | if (tty != defaultStream::instance) { |
| 961 | delete tty; |
| 962 | } |
| 963 | if (defaultStream::instance != NULL__null) { |
| 964 | delete defaultStream::instance; |
| 965 | } |
| 966 | tty = NULL__null; |
| 967 | xtty = NULL__null; |
| 968 | defaultStream::instance = NULL__null; |
| 969 | } |
| 970 | |
| 971 | // ostream_abort() is called by os::abort() when VM is about to die. |
| 972 | void ostream_abort() { |
| 973 | // Here we can't delete tty, just flush its output |
| 974 | if (tty) tty->flush(); |
| 975 | |
| 976 | if (defaultStream::instance != NULL__null) { |
| 977 | static char buf[4096]; |
| 978 | defaultStream::instance->finish_log_on_error(buf, sizeof(buf)); |
| 979 | } |
| 980 | } |
| 981 | |
| 982 | bufferedStream::bufferedStream(size_t initial_size, size_t bufmax) : outputStream() { |
| 983 | buffer_length = initial_size; |
| 984 | buffer = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal)(char*) (AllocateHeap((buffer_length) * sizeof(char), mtInternal )); |
| 985 | buffer_pos = 0; |
| 986 | buffer_fixed = false; |
| 987 | buffer_max = bufmax; |
| 988 | truncated = false; |
| 989 | } |
| 990 | |
| 991 | bufferedStream::bufferedStream(char* fixed_buffer, size_t fixed_buffer_size, size_t bufmax) : outputStream() { |
| 992 | buffer_length = fixed_buffer_size; |
| 993 | buffer = fixed_buffer; |
| 994 | buffer_pos = 0; |
| 995 | buffer_fixed = true; |
| 996 | buffer_max = bufmax; |
| 997 | truncated = false; |
| 998 | } |
| 999 | |
| 1000 | void bufferedStream::write(const char* s, size_t len) { |
| 1001 | |
| 1002 | if (truncated) { |
| 1003 | return; |
| 1004 | } |
| 1005 | |
| 1006 | if(buffer_pos + len > buffer_max) { |
| 1007 | flush(); // Note: may be a noop. |
| 1008 | } |
| 1009 | |
| 1010 | size_t end = buffer_pos + len; |
| 1011 | if (end >= buffer_length) { |
| 1012 | if (buffer_fixed) { |
| 1013 | // if buffer cannot resize, silently truncate |
| 1014 | len = buffer_length - buffer_pos - 1; |
| 1015 | truncated = true; |
| 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 | // Impose a cap beyond which the buffer cannot grow - a size which |
| 1023 | // in all probability indicates a real error, e.g. faulty printing |
| 1024 | // code looping, while not affecting cases of just-very-large-but-its-normal |
| 1025 | // output. |
| 1026 | const size_t reasonable_cap = MAX2(100 * M, buffer_max * 2); |
| 1027 | if (end > reasonable_cap) { |
| 1028 | // In debug VM, assert right away. |
| 1029 | assert(false, "Exceeded max buffer size for this string.")do { if (!(false)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/utilities/ostream.cpp" , 1029, "assert(" "false" ") failed", "Exceeded max buffer size for this string." ); ::breakpoint(); } } while (0); |
| 1030 | // Release VM: silently truncate. We do this since these kind of errors |
| 1031 | // are both difficult to predict with testing (depending on logging content) |
| 1032 | // and usually not serious enough to kill a production VM for it. |
| 1033 | end = reasonable_cap; |
| 1034 | size_t remaining = end - buffer_pos; |
| 1035 | if (len >= remaining) { |
| 1036 | len = remaining - 1; |
| 1037 | truncated = true; |
| 1038 | } |
| 1039 | } |
| 1040 | if (buffer_length < end) { |
| 1041 | buffer = REALLOC_C_HEAP_ARRAY(char, buffer, end, mtInternal)(char*) (ReallocateHeap((char*)(buffer), (end) * sizeof(char) , mtInternal)); |
| 1042 | buffer_length = end; |
| 1043 | } |
| 1044 | } |
| 1045 | } |
| 1046 | if (len > 0) { |
| 1047 | memcpy(buffer + buffer_pos, s, len); |
| 1048 | buffer_pos += len; |
| 1049 | update_position(s, len); |
| 1050 | } |
| 1051 | } |
| 1052 | |
| 1053 | char* bufferedStream::as_string() { |
| 1054 | char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1)(char*) resource_allocate_bytes((buffer_pos+1) * sizeof(char) ); |
| 1055 | strncpy(copy, buffer, buffer_pos); |
| 1056 | copy[buffer_pos] = 0; // terminating null |
| 1057 | return copy; |
| 1058 | } |
| 1059 | |
| 1060 | bufferedStream::~bufferedStream() { |
| 1061 | if (!buffer_fixed) { |
| 1062 | FREE_C_HEAP_ARRAY(char, buffer)FreeHeap((char*)(buffer)); |
| 1063 | } |
| 1064 | } |
| 1065 | |
| 1066 | #ifndef PRODUCT |
| 1067 | |
| 1068 | #if defined(LINUX1) || defined(AIX) || defined(_ALLBSD_SOURCE) |
| 1069 | #include <sys/types.h> |
| 1070 | #include <sys/socket.h> |
| 1071 | #include <netinet/in.h> |
| 1072 | #include <arpa/inet.h> |
| 1073 | #elif defined(_WINDOWS) |
| 1074 | #include <winsock2.h> |
| 1075 | #endif |
| 1076 | |
| 1077 | // Network access |
| 1078 | networkStream::networkStream() : bufferedStream(1024*10, 1024*10) { |
| 1079 | |
| 1080 | _socket = -1; |
| 1081 | |
| 1082 | int result = os::socket(AF_INET2, SOCK_STREAMSOCK_STREAM, 0); |
| 1083 | if (result <= 0) { |
| 1084 | assert(false, "Socket could not be created!")do { if (!(false)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/utilities/ostream.cpp" , 1084, "assert(" "false" ") failed", "Socket could not be created!" ); ::breakpoint(); } } while (0); |
| 1085 | } else { |
| 1086 | _socket = result; |
| 1087 | } |
| 1088 | } |
| 1089 | |
| 1090 | int networkStream::read(char *buf, size_t len) { |
| 1091 | return os::recv(_socket, buf, (int)len, 0); |
| 1092 | } |
| 1093 | |
| 1094 | void networkStream::flush() { |
| 1095 | if (size() != 0) { |
| 1096 | int result = os::raw_send(_socket, (char *)base(), size(), 0); |
| 1097 | assert(result != -1, "connection error")do { if (!(result != -1)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/utilities/ostream.cpp" , 1097, "assert(" "result != -1" ") failed", "connection error" ); ::breakpoint(); } } while (0); |
| 1098 | assert(result == (int)size(), "didn't send enough data")do { if (!(result == (int)size())) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/utilities/ostream.cpp" , 1098, "assert(" "result == (int)size()" ") failed", "didn't send enough data" ); ::breakpoint(); } } while (0); |
| 1099 | } |
| 1100 | reset(); |
| 1101 | } |
| 1102 | |
| 1103 | networkStream::~networkStream() { |
| 1104 | close(); |
| 1105 | } |
| 1106 | |
| 1107 | void networkStream::close() { |
| 1108 | if (_socket != -1) { |
| 1109 | flush(); |
| 1110 | os::socket_close(_socket); |
| 1111 | _socket = -1; |
| 1112 | } |
| 1113 | } |
| 1114 | |
| 1115 | bool networkStream::connect(const char *ip, short port) { |
| 1116 | |
| 1117 | struct sockaddr_in server; |
| 1118 | server.sin_family = AF_INET2; |
| 1119 | server.sin_port = htons(port)(__extension__ ({ unsigned short int __v, __x = (unsigned short int) (port); if (__builtin_constant_p (__x)) __v = ((unsigned short int) ((((__x) >> 8) & 0xff) | (((__x) & 0xff ) << 8))); else __asm__ ("rorw $8, %w0" : "=r" (__v) : "0" (__x) : "cc"); __v; })); |
| 1120 | |
| 1121 | server.sin_addr.s_addr = inet_addr(ip); |
| 1122 | if (server.sin_addr.s_addr == (uint32_t)-1) { |
| 1123 | struct hostent* host = os::get_host_by_name((char*)ip); |
| 1124 | if (host != NULL__null) { |
| 1125 | memcpy(&server.sin_addr, host->h_addr_list[0], host->h_length); |
| 1126 | } else { |
| 1127 | return false; |
| 1128 | } |
| 1129 | } |
| 1130 | |
| 1131 | |
| 1132 | int result = os::connect(_socket, (struct sockaddr*)&server, sizeof(struct sockaddr_in)); |
| 1133 | return (result >= 0); |
| 1134 | } |
| 1135 | |
| 1136 | #endif |