Function BaseInitLoggingImpl

src/butil/logging.cc:782–812

      delete_old(APPEND_TO_OLD_LOG_FILE) {}

bool BaseInitLoggingImpl(const LoggingSettings& settings) {
#if defined(OS_NACL)
    // Can log only to the system debug log.
    CHECK_EQ(settings.logging_dest & ~LOG_TO_SYSTEM_DEBUG_LOG, 0);
#endif

    logging_destination = settings.logging_dest;

    // ignore file options unless logging to file is set.
    if ((logging_destination & LOG_TO_FILE) == 0)
        return true;

    LoggingLock::Init(settings.lock_log, settings.log_file);
    LoggingLock logging_lock;

    // Calling InitLogging twice or after some log call has already opened the
    // default log file will re-initialize to the new options.
    CloseLogFileUnlocked();

    if (!log_file_name)
        log_file_name = new PathString();
    if (settings.log_file) {
        *log_file_name = settings.log_file;
    } else {
        *log_file_name = GetDefaultLogFile();
    }
    if (settings.delete_old == DELETE_OLD_LOG_FILE)
        DeleteFilePath(*log_file_name);

    return InitializeLogFileHandle();
}

void SetMinLogLevel(int level) {
    FLAGS_minloglevel = std::min(BLOG_FATAL, level);