Re: Process wakeups when idle and power consumption

On 09.05.2011 12:20, Peter Geoghegan wrote:
> I've taken a look into it, and I'm not optimistic about the likelihood
> of the way I've suggested that we can register a callback on process
> termination on windows being acceptable. It seems to be a kludge too
> far. It does work on Vista, just not very well. There is a
> considerable delay on closing the above console application that uses
> this technique, for example, and there seems to be an unpredictable
> delay in the callback occurring.

Can't we use the pipe trick on Windows? The API is different, but we use
pipes on Windows for other things already. When a process is launched,
open a pipe between postmaster and the child process. In the child,
spawn a thread that just calls ReadFile() on the pipe, which blocks. If
postmaster dies, the ReadFile() call will return with an error.

--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com