Re: STA component call MTA component
"George" <George@discussions.microsoft.com> wrote in message
news:0ED7CE31-8DCB-4FC3-BC10-A4C28CE3E085@microsoft.com
Two basic questions about function invocation from STA to MTA.
In my understaning, the owning thread of STA should not touch MTA
component, and also in MTA there is no message queue for MTA owning
thread to pumping messages.
My question is, if the owning thread of STA calls MTA component (by
interface pointer), which thead is responsible for executing in MTA?
COM maintains a pool of threads for MTA apartment. A thread from this
pool is selected to run the method (a new thread may be created if
necessary).
Before function call returns from MTA, will STA thread waiting or it
could execute in asynchronous way?
STA thread will run a message pump while waiting for the call to return,
which may cause reentrancy. Apart from the reentrancy issue, the call is
synchronous.
--
With best wishes,
Igor Tandetnik
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