Method setLogFile_internal

runtime/RuntimeLogger.cc:624–666

Documentation in NanoLog.h

// Documentation in NanoLog.h
void
RuntimeLogger::setLogFile_internal(const char *filename) {
    // Check if it exists and is readable/writeable
    if (access(filename, F_OK) == 0 && access(filename, R_OK | W_OK) != 0) {
        std::string err = "Unable to read/write from new log file: ";
        err.append(filename);
        throw std::ios_base::failure(err);
    }

    // Try to open the file
    int newFd = open(filename, NanoLogConfig::FILE_PARAMS, 0666);
    if (newFd < 0) {
        std::string err = "Unable to open file new log file: '";
        err.append(filename);
        err.append("': ");
        err.append(strerror(errno));
        throw std::ios_base::failure(err);
    }

    // Everything seems okay, stop the background thread and change files
    sync();

    // Stop the compression thread completely
    {
        std::lock_guard<std::mutex> lock(nanoLogSingleton.condMutex);
        compressionThreadShouldExit = true;
        workAdded.notify_all();
    }

    if (compressionThread.joinable())
        compressionThread.join();

    if (outputFd > 0)
        close(outputFd);
    outputFd = newFd;

    // Relaunch thread
    nextInvocationIndexToBePersisted = 0; // Reset the dictionary
    compressionThreadShouldExit = false;
#ifndef BENCHMARK_DISCARD_ENTRIES_AT_STAGINGBUFFER
    compressionThread = std::thread(&RuntimeLogger::compressionThreadMain, this);
#endif
}

/**
* Set where the NanoLog should output its compressed log. If a previous