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feat: make headers self-contained (#1030)
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| Original file line number | Diff line number | Diff line change |
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| // Copyright (c) 2024, Google Inc. | ||
| // All rights reserved. | ||
| // | ||
| // Redistribution and use in source and binary forms, with or without | ||
| // modification, are permitted provided that the following conditions are | ||
| // met: | ||
| // | ||
| // * Redistributions of source code must retain the above copyright | ||
| // notice, this list of conditions and the following disclaimer. | ||
| // * Redistributions in binary form must reproduce the above | ||
| // copyright notice, this list of conditions and the following disclaimer | ||
| // in the documentation and/or other materials provided with the | ||
| // distribution. | ||
| // * Neither the name of Google Inc. nor the names of its | ||
| // contributors may be used to endorse or promote products derived from | ||
| // this software without specific prior written permission. | ||
| // | ||
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | ||
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | ||
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| // | ||
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| #include "glog/flags.h" | ||
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| #include <cstdlib> | ||
| #include <cstring> | ||
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| #include "base/commandlineflags.h" | ||
| #include "glog/log_severity.h" | ||
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| namespace { | ||
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| // Compute the default value for --log_dir | ||
| static const char* DefaultLogDir() { | ||
| constexpr const char* const names[]{"GOOGLE_LOG_DIR", "TEST_TMPDIR"}; | ||
| for (const char* const name : names) { | ||
| const char* const env = std::getenv(name); | ||
| if (env != nullptr && env[0] != '\0') { | ||
| return env; | ||
| } | ||
| } | ||
| return ""; | ||
| } | ||
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| bool BoolFromEnv(const char* varname, bool defval) { | ||
| const char* const valstr = getenv(varname); | ||
| if (!valstr) { | ||
| return defval; | ||
| } | ||
| return std::memchr("tTyY1\0", valstr[0], 6) != nullptr; | ||
| } | ||
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| } // namespace | ||
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| GLOG_DEFINE_bool(timestamp_in_logfile_name, | ||
| BoolFromEnv("GOOGLE_TIMESTAMP_IN_LOGFILE_NAME", true), | ||
| "put a timestamp at the end of the log file name"); | ||
| GLOG_DEFINE_bool(logtostderr, BoolFromEnv("GOOGLE_LOGTOSTDERR", false), | ||
| "log messages go to stderr instead of logfiles"); | ||
| GLOG_DEFINE_bool(alsologtostderr, BoolFromEnv("GOOGLE_ALSOLOGTOSTDERR", false), | ||
| "log messages go to stderr in addition to logfiles"); | ||
| GLOG_DEFINE_bool(colorlogtostderr, false, | ||
| "color messages logged to stderr (if supported by terminal)"); | ||
| GLOG_DEFINE_bool(colorlogtostdout, false, | ||
| "color messages logged to stdout (if supported by terminal)"); | ||
| GLOG_DEFINE_bool(logtostdout, BoolFromEnv("GOOGLE_LOGTOSTDOUT", false), | ||
| "log messages go to stdout instead of logfiles"); | ||
| #ifdef GLOG_OS_LINUX | ||
| GLOG_DEFINE_bool( | ||
| drop_log_memory, true, | ||
| "Drop in-memory buffers of log contents. " | ||
| "Logs can grow very quickly and they are rarely read before they " | ||
| "need to be evicted from memory. Instead, drop them from memory " | ||
| "as soon as they are flushed to disk."); | ||
| #endif | ||
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| // By default, errors (including fatal errors) get logged to stderr as | ||
| // well as the file. | ||
| // | ||
| // The default is ERROR instead of FATAL so that users can see problems | ||
| // when they run a program without having to look in another file. | ||
| DEFINE_int32(stderrthreshold, google::GLOG_ERROR, | ||
| "log messages at or above this level are copied to stderr in " | ||
| "addition to logfiles. This flag obsoletes --alsologtostderr."); | ||
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| GLOG_DEFINE_string(alsologtoemail, "", | ||
| "log messages go to these email addresses " | ||
| "in addition to logfiles"); | ||
| GLOG_DEFINE_bool(log_file_header, true, | ||
| "Write the file header at the start of each log file"); | ||
| GLOG_DEFINE_bool(log_prefix, true, | ||
| "Prepend the log prefix to the start of each log line"); | ||
| GLOG_DEFINE_bool(log_year_in_prefix, true, | ||
| "Include the year in the log prefix"); | ||
| GLOG_DEFINE_int32(minloglevel, 0, | ||
| "Messages logged at a lower level than this don't " | ||
| "actually get logged anywhere"); | ||
| GLOG_DEFINE_int32(logbuflevel, 0, | ||
| "Buffer log messages logged at this level or lower" | ||
| " (-1 means don't buffer; 0 means buffer INFO only;" | ||
| " ...)"); | ||
| GLOG_DEFINE_int32(logbufsecs, 30, | ||
| "Buffer log messages for at most this many seconds"); | ||
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| GLOG_DEFINE_int32(logcleansecs, 60 * 5, // every 5 minutes | ||
| "Clean overdue logs every this many seconds"); | ||
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| GLOG_DEFINE_int32(logemaillevel, 999, | ||
| "Email log messages logged at this level or higher" | ||
| " (0 means email all; 3 means email FATAL only;" | ||
| " ...)"); | ||
| GLOG_DEFINE_string(logmailer, "", "Mailer used to send logging email"); | ||
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| GLOG_DEFINE_int32(logfile_mode, 0664, "Log file mode/permissions."); | ||
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| GLOG_DEFINE_string( | ||
| log_dir, DefaultLogDir(), | ||
| "If specified, logfiles are written into this directory instead " | ||
| "of the default logging directory."); | ||
| GLOG_DEFINE_string(log_link, "", | ||
| "Put additional links to the log " | ||
| "files in this directory"); | ||
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| GLOG_DEFINE_uint32(max_log_size, 1800, | ||
| "approx. maximum log file size (in MB). A value of 0 will " | ||
| "be silently overridden to 1."); | ||
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| GLOG_DEFINE_bool(stop_logging_if_full_disk, false, | ||
| "Stop attempting to log to disk if the disk is full."); | ||
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| GLOG_DEFINE_string(log_backtrace_at, "", | ||
| "Emit a backtrace when logging at file:linenum."); | ||
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| GLOG_DEFINE_bool(log_utc_time, false, "Use UTC time for logging."); | ||
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| GLOG_DEFINE_int32(v, 0, | ||
| "Show all VLOG(m) messages for m <= this." | ||
| " Overridable by --vmodule."); | ||
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| GLOG_DEFINE_string( | ||
| vmodule, "", | ||
| "per-module verbose level." | ||
| " Argument is a comma-separated list of <module name>=<log level>." | ||
| " <module name> is a glob pattern, matched against the filename base" | ||
| " (that is, name ignoring .cc/.h./-inl.h)." | ||
| " <log level> overrides any value given by --v."); | ||
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| GLOG_DEFINE_bool(symbolize_stacktrace, true, | ||
| "Symbolize the stack trace in the tombstone"); |
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