OpenEuphoria

Re: Threads?

• Posted by jbrown105 at speedymail.org Oct 09, 2002
• 439 views

On  0, Kat <kat at kogeijin.com> wrote:
> 
> On 9 Oct 2002, at 22:56, Robert Craig wrote:
> 
> > 
> > Kat writes:
> > > Other than socks or dde, is there 
> > > any way to signal the other process(es) that there is work to be done?
> > 
> > Have a look at Jordah Ferguson's demo where 
> > processes pass Euphoria data to each other via shared memory.
> > He uses a library developed by Mario Steele and Jason Mirwald.
> > I think jbrown was doing something similar on Linux.
> > A process could sleep() and periodically check a value in 
> > shared memory.
> 
> Sleep()ing isn't the same as an event trigger.
> 
> Kat
> 

No, but it comes close to emulating it.

Under *nix, you can also use signals as triggers, signals + shared memory
should od the trick: the signal can be the event trigger and the shared mem
can transfer the variable states shared between processes. (This is what I
tried to do, but I was unable to solve the race condition which tended to
corrupt the database. File locks and mutexes both failed for me, hence I
resorted to socks.)

Is there any similar mechanism to signals under Win32? You could use that
as the event trigger.

jbrown