[Thomas Wouters] > Perhaps the memory you have is of select-lookalikes, like poll(),
No, it was definitely select(), and on a 64-bit Unix (probably _not_ Linux) that allowed for an enormous number of sockets. > or maybe of vendor-specific (and POSIX-breaking) extensions to select(). Yes, it must have been non-POSIX. > select() performs pretty poorly on large fdsets with holes in, and has the > fixed > size fdset problem, so poll() was added to fix that (by Linux and later by > XPG4, > IIRC.) poll() takes an array of structs containing the fd, the operations to > watch for and an output parameter with seen events. Does that jar your > memory? :) No more than it had been jarred ;-) Well, a bit more: it was possible to pass a first argument to select() that was larger than FD_SETSIZE. In effect, FD_SETSIZE had no meaning. > (The socketmodule has support for poll(), on systems that have it, by the > way.) Yup. _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
