Function ProcessBuffer

util/system/daemon_ut.cpp:12–33

#ifdef _unix_
    template <typename Func>
    static bool ProcessBuffer(Func&& func, void* bufin, size_t size) {
        char* buf = (char*)bufin;
        do {
            const ssize_t bytesDone = func(buf, size);
            if (bytesDone == 0) {
                return false;
            }

            if (bytesDone < 0) {
                if (errno == EAGAIN || errno == EINTR) {
                    continue;
                } else {
                    return false;
                }
            }

            buf += bytesDone;
            size -= bytesDone;
        } while (size != 0);

        return true;
    }

    const int size = 1024 * 4;
    const int pagesSize = sizeof(int) * size;