From: Ben Myles <ben.myles@...>
Date: 2005-10-07T09:20:47+09:00
Subject: how to run some c code for every real and forked ruby process

I have some C code (shown below) which I want executed every time ruby
runs (it spawns a monitoring script that monitors the ruby process).

I tried placing the code in main.c, and this works fine at first
glance. However, if I fork something from within ruby the newly forked
process doesn't get monitored (which is also why I can't just write a
simple bash ruby wrapper).

Could someone point me to a function in the ruby source where I can
insert the code so that it would be run once for both real processes
and forked children?

I'm no C programmer, so I'm a bit out of my league here ;-)

    int monitor_pid = getpid();
    char monitor_buffer[100];
    sprintf(monitor_buffer, "/usr/local/bin/monitor %i &", monitor_pid);
    system(monitor_buffer);

Thanks!

Ben