libkea-util - Kea Utilities Library

Utilities

The utilities library (libkea-util) provides generic and Kea utilities:

• boost time: boost Posix time and duration to text conversions.
• buffer (header only): input and output buffers.
• csv file: comma-separated values (CSV) files.
• double: test utility for checking double equivalence (vs. strict equality).
• encode: base16, base32, base64 and hexadecimal conversions.
• filename: filename manipulation (avoid dependency on boost).
• hash: Fowler-Noll-Vo 64 bit hash function.
• io: test utils for file descriptors and sockets.
• io utilities (header only): reads and writes integers from / to buffers.
• labeled values: labeled constants and label constant sets.
• multi threading manager (in the util library to be available in the whole Kea code).
• optional: optional values.
• pid file: process id files.
• pointer util: test utility to compare smart pointers.
• process spawn.
• random: pseudo-random number generator for query ids (please use the cryptolink random generator when security matters).
• range utilities.
• read-write mutex (header only).
• signal set: signal handling (please use isc::asiolink::IOSignalSet instead).
• staged values.
• state model: event-driven deterministic finite state machine.
• stop watch: to measure code execution time.
• string util: various string common tools.
• thread pool.
• time utilities: DNSSEC time conversions from and to text.
• unittests (directory): tools for google test unit tests.
• unlock guard: RAII helper to unlock a mutex in a limited scope.
• versioned csv file: csv files with multiple versions of file schema.
• watched socket (required as select() or poll() do not support condition variables).
• watched threads: threads using ready, error and terminate watched socket.

Multi-Threading Consideration for Utilities

By default utilities are not thread safe, for instance CSV files and qid random generators are not thread safe. Exceptions are:

• multi threading manager is thread safe.
• read-write mutex is thread safe.
• state model is thread safe.
• thread pool is thread safe.
• unlock guard is thread safe.
• watched threads are thread safe.