cflatter@ZIA.AOC.NRAO.EDU (Chris Flatters) (11/16/90)
> I have an application which needs to read data off a socket. I can > arrange for it to be sent a ClientMessage when this data is to be > transmitted, but since the amount of data could be fairly large (though > I'm working to keep it of moderate size), I'd rather not have the > application simply sit there (vis a vis X) while reading data. I'd > like to be able for it to respond to Expose events and the like while > still receiving data. Is there a reasonable way to do this? I'm using > just Xlib ons a SPARCStation running OpenWindows 2.0. Thanks! On Unix systems you can obtain the file descriptor of the X connection. You can then use the select system call (BSD interface) or the poll system call (System V interface) to see if either the X connection or your connection have data pending. You can then modify your main event driven loop to read from your socket when there is no activity on the X connection. Chris Flatters
cflatter@ZIA.AOC.NRAO.EDU (Chris Flatters) (11/16/90)
>> I have an application which needs to read data off a socket. I can >> arrange for it to be sent a ClientMessage when this data is to be >> transmitted, but since the amount of data could be fairly large (though >> I'm working to keep it of moderate size), I'd rather not have the >> application simply sit there (vis a vis X) while reading data. I'd >> like to be able for it to respond to Expose events and the like while >> still receiving data. Is there a reasonable way to do this? I'm using >> just Xlib ons a SPARCStation running OpenWindows 2.0. Thanks! > > On Unix systems you can obtain the file descriptor of the X connection. I managed to leave out how you do this (the sort of that happens if I post messages before drinking my morning coffee). The macro ConnectionNumber (display) will return the file descriptor. Chris Flatters