global exception catching

[Duncan Booth]

Rene Pijlman <reageer.in at de.nieuwsgroep> wrote in 
news:denr5vcdd4jf31v1ad6tmpoodrc673t81b at 4ax.com:

> Brrr... Wouldn't it be better to simply remove the Break key
> from the keyboard? :-)
> 
Possibly, but I hit this problem recently when I wanted a program acting as 
an XMLRPC server to do some tidying up when it was closed. Windows also 
generates SIGBREAK if you close the command window containing the Python 
script, so it is worth handling.

The problem with sockets is that SIGBREAK doesn't get generated if your 
main thread is in the middle of a system call until the call returns. Since 
reading from a socket might never return (or might have a long timeout), 
you have to make sure you never make long blocking calls from the main 
thread (SIGBREAK always gets handled in the main thread).

-- 
Duncan Booth                                             duncan at rcp.co.uk
int month(char *p){return(124864/((p[0]+p[1]-p[2]&0x1f)+1)%12)["\5\x8\3"
"\6\7\xb\1\x9\xa\2\0\4"];} // Who said my code was obscure?