| Lists: | Postg토토SQL : Postg토토SQL |
|---|
| From: | "Steve Tibbett" <stibbett(at)zim(dot)biz> |
|---|---|
| To: | "Andrew Dunstan" <andrew(at)dunslane(dot)net>, "pgsql-hackers-win32" <pgsql-hackers-win32(at)postgresql(dot)org> |
| Subject: | Re: [HACKERS] [PATCHES] fork/exec patch |
| Date: | 2003-12-16 20:06:28 |
| Message-ID: | 546CD3100F4C0F42A30A94C0F2B349148FC64A@zimmail1.zim.zimismobile.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Lists: | Postg토토SQL : Postg토토SQL |
>Isn't WaitForSingleObject() in effect a polling call?
It puts your thread to sleep, until it gets woken up by the handle
you're waiting on being set to a signalled state.
--
Steve Tibbett
stibbett(at)zim(dot)biz
| From: | Andrew Dunstan <andrew(at)dunslane(dot)net> |
|---|---|
| To: | pgsql-hackers-win32 <pgsql-hackers-win32(at)postgresql(dot)org> |
| Subject: | Re: [HACKERS] [PATCHES] fork/exec patch |
| Date: | 2003-12-16 20:20:38 |
| Message-ID: | 3FDF6916.8020901@dunslane.net |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Lists: | Postg토토 베이SQL : Postg토토 |
Steve Tibbett wrote:
>>Isn't WaitForSingleObject() in effect a polling call?
>>
>>
>
>It puts your thread to sleep, until it gets woken up by the handle
>you're waiting on being set to a signalled state.
>
>
>
Right. Just like select() puts your thread to sleep until one of its
files is ready (or it times out).
Do we have a terminology problem here?
The point is that, unlike classic Unix signal programming, you need
*something* that explicitly checks for the event. It could be a separate
thread in a tight loop, which is what the CONNX code appears to do, or
it could conceivably be something else in the main thread with a very
short timeout.
cheers
andrew