Re: poll() emulation in git

Il 05/09/2012 13:24, Joachim Schmitz ha scritto:

However: this poll implementation, while compiling OK, doesn't work properly.
Because it uses recv(...,MSG_PEEK), it works on sockets only (returns ENOTSOCK on anything else), while the real poll() works on all
kind if file descriptors, at least that is my understanding.

Actually recv(...,MSG_PEEK) on most Unix variants works on non-sockets
too.  The trick is taken from GNU Pth in turn.

Here on HP NonStop, when being connected via an non-interactive SSH, we get a set of pipes (stdin, stdout, stderr) instead of a
socket to talk to, so the poll() just hangs/loops.

Does your system have a working FIONREAD ioctl for pipes?

As git's implementation is based on ('stolen' from?) gnulib's and still pretty similar, CC to the gnulib list and Paolo

Any idea how this could get solved? I.e. how to implement a poll() that works on non-sockets too?
There is some code that pertains to a seemingly similar problem in Mac OS X, but my problem is not identical, as that fix doesn't
help.

Paolo