| File: | jdk/src/hotspot/share/logging/logFileOutput.cpp |
| Warning: | line 150, column 7 Value stored to 'found' is never read |
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| 1 | /* |
| 2 | * Copyright (c) 2015, 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 | #include "precompiled.hpp" |
| 25 | #include "jvm.h" |
| 26 | #include "logging/log.hpp" |
| 27 | #include "logging/logAsyncWriter.hpp" |
| 28 | #include "logging/logConfiguration.hpp" |
| 29 | #include "logging/logFileOutput.hpp" |
| 30 | #include "memory/allocation.inline.hpp" |
| 31 | #include "runtime/arguments.hpp" |
| 32 | #include "runtime/os.hpp" |
| 33 | #include "utilities/globalDefinitions.hpp" |
| 34 | #include "utilities/defaultStream.hpp" |
| 35 | |
| 36 | const char* const LogFileOutput::Prefix = "file="; |
| 37 | const char* const LogFileOutput::FileOpenMode = "a"; |
| 38 | const char* const LogFileOutput::PidFilenamePlaceholder = "%p"; |
| 39 | const char* const LogFileOutput::TimestampFilenamePlaceholder = "%t"; |
| 40 | const char* const LogFileOutput::TimestampFormat = "%Y-%m-%d_%H-%M-%S"; |
| 41 | const char* const LogFileOutput::FileSizeOptionKey = "filesize"; |
| 42 | const char* const LogFileOutput::FileCountOptionKey = "filecount"; |
| 43 | char LogFileOutput::_pid_str[PidBufferSize]; |
| 44 | char LogFileOutput::_vm_start_time_str[StartTimeBufferSize]; |
| 45 | |
| 46 | LogFileOutput::LogFileOutput(const char* name) |
| 47 | : LogFileStreamOutput(NULL__null), _name(os::strdup_check_oom(name, mtLogging)), |
| 48 | _file_name(NULL__null), _archive_name(NULL__null), _current_file(0), |
| 49 | _file_count(DefaultFileCount), _is_default_file_count(true), _archive_name_len(0), |
| 50 | _rotate_size(DefaultFileSize), _current_size(0), _rotation_semaphore(1) { |
| 51 | assert(strstr(name, Prefix) == name, "invalid output name '%s': missing prefix: %s", name, Prefix)do { if (!(strstr(name, Prefix) == name)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/logging/logFileOutput.cpp" , 51, "assert(" "strstr(name, Prefix) == name" ") failed", "invalid output name '%s': missing prefix: %s" , name, Prefix); ::breakpoint(); } } while (0); |
| 52 | _file_name = make_file_name(name + strlen(Prefix), _pid_str, _vm_start_time_str); |
| 53 | } |
| 54 | |
| 55 | const char* LogFileOutput::cur_log_file_name() { |
| 56 | if (strlen(_archive_name) == 0) { |
| 57 | return _file_name; |
| 58 | } else { |
| 59 | return _archive_name; |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | void LogFileOutput::set_file_name_parameters(jlong vm_start_time) { |
| 64 | int res = jio_snprintf(_pid_str, sizeof(_pid_str), "%d", os::current_process_id()); |
| 65 | assert(res > 0, "PID buffer too small")do { if (!(res > 0)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/logging/logFileOutput.cpp" , 65, "assert(" "res > 0" ") failed", "PID buffer too small" ); ::breakpoint(); } } while (0); |
| 66 | |
| 67 | struct tm local_time; |
| 68 | time_t utc_time = vm_start_time / 1000; |
| 69 | os::localtime_pd(&utc_time, &local_time); |
| 70 | res = (int)strftime(_vm_start_time_str, sizeof(_vm_start_time_str), TimestampFormat, &local_time); |
| 71 | assert(res > 0, "VM start time buffer too small.")do { if (!(res > 0)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/logging/logFileOutput.cpp" , 71, "assert(" "res > 0" ") failed", "VM start time buffer too small." ); ::breakpoint(); } } while (0); |
| 72 | } |
| 73 | |
| 74 | LogFileOutput::~LogFileOutput() { |
| 75 | if (_stream != NULL__null) { |
| 76 | if (fclose(_stream) != 0) { |
| 77 | jio_fprintf(defaultStream::error_stream(), "Could not close log file '%s' (%s).\n", |
| 78 | _file_name, os::strerror(errno(*__errno_location ()))); |
| 79 | } |
| 80 | } |
| 81 | os::free(_archive_name); |
| 82 | os::free(_file_name); |
| 83 | os::free(const_cast<char*>(_name)); |
| 84 | } |
| 85 | |
| 86 | static size_t parse_value(const char* value_str) { |
| 87 | char* end; |
| 88 | unsigned long long value = strtoull(value_str, &end, 10); |
| 89 | if (!isdigit(*value_str) || end != value_str + strlen(value_str) || value >= SIZE_MAX(18446744073709551615UL)) { |
| 90 | return SIZE_MAX(18446744073709551615UL); |
| 91 | } |
| 92 | return value; |
| 93 | } |
| 94 | |
| 95 | static uint number_of_digits(uint number) { |
| 96 | return number < 10 ? 1 : (number < 100 ? 2 : 3); |
| 97 | } |
| 98 | |
| 99 | static bool is_regular_file(const char* filename) { |
| 100 | struct stat st; |
| 101 | int ret = os::stat(filename, &st); |
| 102 | if (ret != 0) { |
| 103 | return false; |
| 104 | } |
| 105 | return (st.st_mode & S_IFMT0170000) == S_IFREG0100000; |
| 106 | } |
| 107 | |
| 108 | static bool is_fifo_file(const char* filename) { |
| 109 | struct stat st; |
| 110 | int ret = os::stat(filename, &st); |
| 111 | if (ret != 0) { |
| 112 | return false; |
| 113 | } |
| 114 | return S_ISFIFO(st.st_mode)((((st.st_mode)) & 0170000) == (0010000)); |
| 115 | } |
| 116 | |
| 117 | // Try to find the next number that should be used for file rotation. |
| 118 | // Return UINT_MAX on error. |
| 119 | static uint next_file_number(const char* filename, |
| 120 | uint number_of_digits, |
| 121 | uint filecount, |
| 122 | outputStream* errstream) { |
| 123 | bool found = false; |
| 124 | uint next_num = 0; |
| 125 | |
| 126 | // len is filename + dot + digits + null char |
| 127 | size_t len = strlen(filename) + number_of_digits + 2; |
| 128 | char* archive_name = NEW_C_HEAP_ARRAY(char, len, mtLogging)(char*) (AllocateHeap((len) * sizeof(char), mtLogging)); |
| 129 | char* oldest_name = NEW_C_HEAP_ARRAY(char, len, mtLogging)(char*) (AllocateHeap((len) * sizeof(char), mtLogging)); |
| 130 | |
| 131 | for (uint i = 0; i < filecount; i++) { |
| 132 | int ret = jio_snprintf(archive_name, len, "%s.%0*u", |
| 133 | filename, number_of_digits, i); |
| 134 | assert(ret > 0 && static_cast<size_t>(ret) == len - 1,do { if (!(ret > 0 && static_cast<size_t>(ret ) == len - 1)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/logging/logFileOutput.cpp" , 135, "assert(" "ret > 0 && static_cast<size_t>(ret) == len - 1" ") failed", "incorrect buffer length calculation"); ::breakpoint (); } } while (0) |
| 135 | "incorrect buffer length calculation")do { if (!(ret > 0 && static_cast<size_t>(ret ) == len - 1)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/logging/logFileOutput.cpp" , 135, "assert(" "ret > 0 && static_cast<size_t>(ret) == len - 1" ") failed", "incorrect buffer length calculation"); ::breakpoint (); } } while (0); |
| 136 | |
| 137 | if (os::file_exists(archive_name) && !is_regular_file(archive_name)) { |
| 138 | // We've encountered something that's not a regular file among the |
| 139 | // possible file rotation targets. Fail immediately to prevent |
| 140 | // problems later. |
| 141 | errstream->print_cr("Possible rotation target file '%s' already exists " |
| 142 | "but is not a regular file.", archive_name); |
| 143 | next_num = UINT_MAX(2147483647 *2U +1U); |
| 144 | break; |
| 145 | } |
| 146 | |
| 147 | // Stop looking if we find an unused file name |
| 148 | if (!os::file_exists(archive_name)) { |
| 149 | next_num = i; |
| 150 | found = true; |
Value stored to 'found' is never read | |
| 151 | break; |
| 152 | } |
| 153 | |
| 154 | // Keep track of oldest existing log file |
| 155 | if (!found |
| 156 | || os::compare_file_modified_times(oldest_name, archive_name) > 0) { |
| 157 | strcpy(oldest_name, archive_name); |
| 158 | next_num = i; |
| 159 | found = true; |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | FREE_C_HEAP_ARRAY(char, oldest_name)FreeHeap((char*)(oldest_name)); |
| 164 | FREE_C_HEAP_ARRAY(char, archive_name)FreeHeap((char*)(archive_name)); |
| 165 | return next_num; |
| 166 | } |
| 167 | |
| 168 | bool LogFileOutput::set_option(const char* key, const char* value, outputStream* errstream) { |
| 169 | bool success = LogFileStreamOutput::set_option(key, value, errstream); |
| 170 | if (!success) { |
| 171 | if (strcmp(FileCountOptionKey, key) == 0) { |
| 172 | size_t sizeval = parse_value(value); |
| 173 | if (sizeval > MaxRotationFileCount) { |
| 174 | errstream->print_cr("Invalid option: %s must be in range [0, %u]", |
| 175 | FileCountOptionKey, |
| 176 | MaxRotationFileCount); |
| 177 | } else { |
| 178 | _file_count = static_cast<uint>(sizeval); |
| 179 | _is_default_file_count = false; |
| 180 | success = true; |
| 181 | } |
| 182 | } else if (strcmp(FileSizeOptionKey, key) == 0) { |
| 183 | julong longval; |
| 184 | success = Arguments::atojulong(value, &longval); |
| 185 | if (!success || (longval > SIZE_MAX(18446744073709551615UL))) { |
| 186 | errstream->print_cr("Invalid option: %s must be in range [0, " |
| 187 | SIZE_FORMAT"%" "l" "u" "]", FileSizeOptionKey, (size_t)SIZE_MAX(18446744073709551615UL)); |
| 188 | success = false; |
| 189 | } else { |
| 190 | _rotate_size = static_cast<size_t>(longval); |
| 191 | success = true; |
| 192 | } |
| 193 | } |
| 194 | } |
| 195 | return success; |
| 196 | } |
| 197 | |
| 198 | bool LogFileOutput::initialize(const char* options, outputStream* errstream) { |
| 199 | if (!parse_options(options, errstream)) { |
| 200 | return false; |
| 201 | } |
| 202 | |
| 203 | bool file_exist = os::file_exists(_file_name); |
| 204 | if (file_exist && _is_default_file_count && is_fifo_file(_file_name)) { |
| 205 | _file_count = 0; // Prevent file rotation for fifo's such as named pipes. |
| 206 | } |
| 207 | |
| 208 | if (_file_count > 0) { |
| 209 | // compute digits with filecount - 1 since numbers will start from 0 |
| 210 | _file_count_max_digits = number_of_digits(_file_count - 1); |
| 211 | _archive_name_len = 2 + strlen(_file_name) + _file_count_max_digits; |
| 212 | _archive_name = NEW_C_HEAP_ARRAY(char, _archive_name_len, mtLogging)(char*) (AllocateHeap((_archive_name_len) * sizeof(char), mtLogging )); |
| 213 | _archive_name[0] = 0; |
| 214 | } |
| 215 | |
| 216 | log_trace(logging)(!(LogImpl<(LogTag::_logging), (LogTag::__NO_TAG), (LogTag ::__NO_TAG), (LogTag::__NO_TAG), (LogTag::__NO_TAG), (LogTag:: __NO_TAG)>::is_level(LogLevel::Trace))) ? (void)0 : LogImpl <(LogTag::_logging), (LogTag::__NO_TAG), (LogTag::__NO_TAG ), (LogTag::__NO_TAG), (LogTag::__NO_TAG), (LogTag::__NO_TAG) >::write<LogLevel::Trace>("Initializing logging to file '%s' (filecount: %u" |
| 217 | ", filesize: " SIZE_FORMAT"%" "l" "u" " KiB).", |
| 218 | _file_name, _file_count, _rotate_size / K); |
| 219 | |
| 220 | if (_file_count > 0 && file_exist) { |
| 221 | if (!is_regular_file(_file_name)) { |
| 222 | errstream->print_cr("Unable to log to file %s with log file rotation: " |
| 223 | "%s is not a regular file", |
| 224 | _file_name, _file_name); |
| 225 | return false; |
| 226 | } |
| 227 | _current_file = next_file_number(_file_name, |
| 228 | _file_count_max_digits, |
| 229 | _file_count, |
| 230 | errstream); |
| 231 | if (_current_file == UINT_MAX(2147483647 *2U +1U)) { |
| 232 | return false; |
| 233 | } |
| 234 | log_trace(logging)(!(LogImpl<(LogTag::_logging), (LogTag::__NO_TAG), (LogTag ::__NO_TAG), (LogTag::__NO_TAG), (LogTag::__NO_TAG), (LogTag:: __NO_TAG)>::is_level(LogLevel::Trace))) ? (void)0 : LogImpl <(LogTag::_logging), (LogTag::__NO_TAG), (LogTag::__NO_TAG ), (LogTag::__NO_TAG), (LogTag::__NO_TAG), (LogTag::__NO_TAG) >::write<LogLevel::Trace>("Existing log file found, saving it as '%s.%0*u'", |
| 235 | _file_name, _file_count_max_digits, _current_file); |
| 236 | archive(); |
| 237 | increment_file_count(); |
| 238 | } |
| 239 | |
| 240 | _stream = os::fopen(_file_name, FileOpenMode); |
| 241 | if (_stream == NULL__null) { |
| 242 | errstream->print_cr("Error opening log file '%s': %s", |
| 243 | _file_name, os::strerror(errno(*__errno_location ()))); |
| 244 | return false; |
| 245 | } |
| 246 | |
| 247 | if (_file_count == 0 && is_regular_file(_file_name)) { |
| 248 | log_trace(logging)(!(LogImpl<(LogTag::_logging), (LogTag::__NO_TAG), (LogTag ::__NO_TAG), (LogTag::__NO_TAG), (LogTag::__NO_TAG), (LogTag:: __NO_TAG)>::is_level(LogLevel::Trace))) ? (void)0 : LogImpl <(LogTag::_logging), (LogTag::__NO_TAG), (LogTag::__NO_TAG ), (LogTag::__NO_TAG), (LogTag::__NO_TAG), (LogTag::__NO_TAG) >::write<LogLevel::Trace>("Truncating log file"); |
| 249 | os::ftruncate(os::get_fileno(_stream), 0); |
| 250 | } |
| 251 | |
| 252 | return true; |
| 253 | } |
| 254 | |
| 255 | class RotationLocker : public StackObj { |
| 256 | Semaphore& _sem; |
| 257 | |
| 258 | public: |
| 259 | RotationLocker(Semaphore& sem) : _sem(sem) { |
| 260 | sem.wait(); |
| 261 | } |
| 262 | |
| 263 | ~RotationLocker() { |
| 264 | _sem.signal(); |
| 265 | } |
| 266 | }; |
| 267 | |
| 268 | int LogFileOutput::write_blocking(const LogDecorations& decorations, const char* msg) { |
| 269 | RotationLocker lock(_rotation_semaphore); |
| 270 | if (_stream == NULL__null) { |
| 271 | // An error has occurred with this output, avoid writing to it. |
| 272 | return 0; |
| 273 | } |
| 274 | |
| 275 | int written = LogFileStreamOutput::write(decorations, msg); |
| 276 | if (written > 0) { |
| 277 | _current_size += written; |
| 278 | |
| 279 | if (should_rotate()) { |
| 280 | rotate(); |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | return written; |
| 285 | } |
| 286 | |
| 287 | int LogFileOutput::write(const LogDecorations& decorations, const char* msg) { |
| 288 | if (_stream == NULL__null) { |
| 289 | // An error has occurred with this output, avoid writing to it. |
| 290 | return 0; |
| 291 | } |
| 292 | |
| 293 | AsyncLogWriter* aio_writer = AsyncLogWriter::instance(); |
| 294 | if (aio_writer != nullptr) { |
| 295 | aio_writer->enqueue(*this, decorations, msg); |
| 296 | return 0; |
| 297 | } |
| 298 | |
| 299 | return write_blocking(decorations, msg); |
| 300 | } |
| 301 | |
| 302 | int LogFileOutput::write(LogMessageBuffer::Iterator msg_iterator) { |
| 303 | if (_stream == NULL__null) { |
| 304 | // An error has occurred with this output, avoid writing to it. |
| 305 | return 0; |
| 306 | } |
| 307 | |
| 308 | AsyncLogWriter* aio_writer = AsyncLogWriter::instance(); |
| 309 | if (aio_writer != nullptr) { |
| 310 | aio_writer->enqueue(*this, msg_iterator); |
| 311 | return 0; |
| 312 | } |
| 313 | |
| 314 | RotationLocker lock(_rotation_semaphore); |
| 315 | int written = LogFileStreamOutput::write(msg_iterator); |
| 316 | if (written > 0) { |
| 317 | _current_size += written; |
| 318 | |
| 319 | if (should_rotate()) { |
| 320 | rotate(); |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | return written; |
| 325 | } |
| 326 | |
| 327 | void LogFileOutput::archive() { |
| 328 | assert(_archive_name != NULL && _archive_name_len > 0, "Rotation must be configured before using this function.")do { if (!(_archive_name != __null && _archive_name_len > 0)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/logging/logFileOutput.cpp" , 328, "assert(" "_archive_name != __null && _archive_name_len > 0" ") failed", "Rotation must be configured before using this function." ); ::breakpoint(); } } while (0); |
| 329 | int ret = jio_snprintf(_archive_name, _archive_name_len, "%s.%0*u", |
| 330 | _file_name, _file_count_max_digits, _current_file); |
| 331 | assert(ret >= 0, "Buffer should always be large enough")do { if (!(ret >= 0)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/logging/logFileOutput.cpp" , 331, "assert(" "ret >= 0" ") failed", "Buffer should always be large enough" ); ::breakpoint(); } } while (0); |
| 332 | |
| 333 | // Attempt to remove possibly existing archived log file before we rename. |
| 334 | // Don't care if it fails, we really only care about the rename that follows. |
| 335 | remove(_archive_name); |
| 336 | |
| 337 | // Rename the file from ex hotspot.log to hotspot.log.2 |
| 338 | if (rename(_file_name, _archive_name) == -1) { |
| 339 | jio_fprintf(defaultStream::error_stream(), "Could not rename log file '%s' to '%s' (%s).\n", |
| 340 | _file_name, _archive_name, os::strerror(errno(*__errno_location ()))); |
| 341 | } |
| 342 | } |
| 343 | |
| 344 | void LogFileOutput::force_rotate() { |
| 345 | if (_file_count == 0) { |
| 346 | // Rotation not possible |
| 347 | return; |
| 348 | } |
| 349 | |
| 350 | RotationLocker lock(_rotation_semaphore); |
| 351 | rotate(); |
| 352 | } |
| 353 | |
| 354 | void LogFileOutput::rotate() { |
| 355 | if (fclose(_stream)) { |
| 356 | jio_fprintf(defaultStream::error_stream(), "Error closing file '%s' during log rotation (%s).\n", |
| 357 | _file_name, os::strerror(errno(*__errno_location ()))); |
| 358 | } |
| 359 | |
| 360 | // Archive the current log file |
| 361 | archive(); |
| 362 | |
| 363 | // Open the active log file using the same stream as before |
| 364 | _stream = os::fopen(_file_name, FileOpenMode); |
| 365 | if (_stream == NULL__null) { |
| 366 | jio_fprintf(defaultStream::error_stream(), "Could not reopen file '%s' during log rotation (%s).\n", |
| 367 | _file_name, os::strerror(errno(*__errno_location ()))); |
| 368 | return; |
| 369 | } |
| 370 | |
| 371 | // Reset accumulated size, increase current file counter, and check for file count wrap-around. |
| 372 | _current_size = 0; |
| 373 | increment_file_count(); |
| 374 | } |
| 375 | |
| 376 | char* LogFileOutput::make_file_name(const char* file_name, |
| 377 | const char* pid_string, |
| 378 | const char* timestamp_string) { |
| 379 | char* result = NULL__null; |
| 380 | |
| 381 | // Lets start finding out if we have any %d and/or %t in the name. |
| 382 | // We will only replace the first occurrence of any placeholder |
| 383 | const char* pid = strstr(file_name, PidFilenamePlaceholder); |
| 384 | const char* timestamp = strstr(file_name, TimestampFilenamePlaceholder); |
| 385 | |
| 386 | if (pid == NULL__null && timestamp == NULL__null) { |
| 387 | // We found no place-holders, return the simple filename |
| 388 | return os::strdup_check_oom(file_name, mtLogging); |
| 389 | } |
| 390 | |
| 391 | // At least one of the place-holders were found in the file_name |
| 392 | const char* first = ""; |
| 393 | size_t first_pos = SIZE_MAX(18446744073709551615UL); |
| 394 | size_t first_replace_len = 0; |
| 395 | |
| 396 | const char* second = ""; |
| 397 | size_t second_pos = SIZE_MAX(18446744073709551615UL); |
| 398 | size_t second_replace_len = 0; |
| 399 | |
| 400 | // If we found a %p, then setup our variables accordingly |
| 401 | if (pid != NULL__null) { |
| 402 | if (timestamp == NULL__null || pid < timestamp) { |
| 403 | first = pid_string; |
| 404 | first_pos = pid - file_name; |
| 405 | first_replace_len = strlen(PidFilenamePlaceholder); |
| 406 | } else { |
| 407 | second = pid_string; |
| 408 | second_pos = pid - file_name; |
| 409 | second_replace_len = strlen(PidFilenamePlaceholder); |
| 410 | } |
| 411 | } |
| 412 | |
| 413 | if (timestamp != NULL__null) { |
| 414 | if (pid == NULL__null || timestamp < pid) { |
| 415 | first = timestamp_string; |
| 416 | first_pos = timestamp - file_name; |
| 417 | first_replace_len = strlen(TimestampFilenamePlaceholder); |
| 418 | } else { |
| 419 | second = timestamp_string; |
| 420 | second_pos = timestamp - file_name; |
| 421 | second_replace_len = strlen(TimestampFilenamePlaceholder); |
| 422 | } |
| 423 | } |
| 424 | |
| 425 | size_t first_len = strlen(first); |
| 426 | size_t second_len = strlen(second); |
| 427 | |
| 428 | // Allocate the new buffer, size it to hold all we want to put in there +1. |
| 429 | size_t result_len = strlen(file_name) + first_len - first_replace_len + second_len - second_replace_len; |
| 430 | result = NEW_C_HEAP_ARRAY(char, result_len + 1, mtLogging)(char*) (AllocateHeap((result_len + 1) * sizeof(char), mtLogging )); |
| 431 | |
| 432 | // Assemble the strings |
| 433 | size_t file_name_pos = 0; |
| 434 | size_t i = 0; |
| 435 | while (i < result_len) { |
| 436 | if (file_name_pos == first_pos) { |
| 437 | // We are in the range of the first placeholder |
| 438 | strcpy(result + i, first); |
| 439 | // Bump output buffer position with length of replacing string |
| 440 | i += first_len; |
| 441 | // Bump source buffer position to skip placeholder |
| 442 | file_name_pos += first_replace_len; |
| 443 | } else if (file_name_pos == second_pos) { |
| 444 | // We are in the range of the second placeholder |
| 445 | strcpy(result + i, second); |
| 446 | i += second_len; |
| 447 | file_name_pos += second_replace_len; |
| 448 | } else { |
| 449 | // Else, copy char by char of the original file |
| 450 | result[i] = file_name[file_name_pos++]; |
| 451 | i++; |
| 452 | } |
| 453 | } |
| 454 | // Add terminating char |
| 455 | result[result_len] = '\0'; |
| 456 | return result; |
| 457 | } |
| 458 | |
| 459 | void LogFileOutput::describe(outputStream *out) { |
| 460 | LogFileStreamOutput::describe(out); |
| 461 | out->print(",filecount=%u,filesize=" SIZE_FORMAT"%" "l" "u" "%s,async=%s", _file_count, |
| 462 | byte_size_in_proper_unit(_rotate_size), |
| 463 | proper_unit_for_byte_size(_rotate_size), |
| 464 | LogConfiguration::is_async_mode() ? "true" : "false"); |
| 465 | } |