Was available in FreeBSD back in 2009: https://wiki.freebsd.org/GCD https://wiki.freebsd.org/GCD Archived Linux port: https://github.com/nickhutchinson/libdispa

Was available in FreeBSD back in 2009: https://wiki.freebsd.org/GCD https://wiki.freebsd.org/GCD Archived Linux port: https://github.com/nickhutchinson/libdispatch https://github.com/nickhutchinson/libdispatch You can use this without blocks, but it is way more convenient with blocks.