[Haskell-cafe] Re: Bound threads

[Marcin 'Qrczak' Kowalczyk]

Marcin 'Qrczak' Kowalczyk <qrczak at knm.org.pl> writes:

> Why is the main thread bound?

I can answer myself: if the main thread is unbound, the end of the
program can be reached in a different OS thread, which may be a
problem if we want to return cleanly to the calling code.

I've now implemented a threaded runtime in my language Kogut, based
on the design of Haskell. The main thread is bound. The thread which
holds the capability performs I/O multiplexing itself, without a
separate service thread.

Producer/consumer ping-pong is 15 times slower between threads running
on different OS threads than on two unbound threads.

-- 
   __("<         Marcin Kowalczyk
   \__/       qrczak at knm.org.pl
    ^^     http://qrnik.knm.org.pl/~qrczak/