| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 2848.1 | | SIOG::BATEMAN | We are all DECservers | Tue Apr 15 1997 04:50 | 12 |
|
Motif/Xt assumes that the main line code is an XtMainLoop (ie:
dispatching X windows events). If however you call pams_get_msgw() in
one of your event routes it may block until the appropriate message
is received or a timeout occurs. You may be able to get around this
with some careful coding (eg: fork a process to do the DECmessageQ
pams_get_msgw and signal the parent process).
I don't think anything has changed in V4.0 to help you.
Alan.
|
| 2848.2 | I need to know the specific problem... | KLOVIA::MICHELSEN | BEA/DEC MessageQ Engineering | Tue Apr 15 1997 08:53 | 24 |
| re: .0
>I haven't really touched DMQ recently. Someone told me there used to
>be certain problems concerning performing synchronous calls to DMQ in
>a Motif (or similar) environments in DMQ V3.x.
>Briefly speaking, what were the problems, and are they solved in DMQ V4
>for OpenVMS?
I cannot recall any specific problems with Motif other than the
general problem having blocking calls within a polling dispatch
loop. Others have solved this problem with pams_get_msga or
adding a timed based pams_get_msg event to their Motif application.
re: .1
> I don't think anything has changed in V4.0 to help you.
That is correct, nothing specific was done in this area.
Marty
|
| 2848.3 | And you can use threads | XHOST::SJZ | Kick Butt In Your Face Messaging ! | Tue Apr 15 1997 09:52 | 11 |
|
of course you can use threads as well. specifically you want
to threads. the first thread or main thread would be your X
thread. the second would be your DMQ thread. you signal
your DMQ thread using a work queue and a condition variable.
when the DMQ thread is done, it signals the X thread using
something like XSendEvent and then reading off some sort of
completion queue.
it SHOULD just work.
_sjz.
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