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Re: Use CFMessagePort in CFM app?
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Re: Use CFMessagePort in CFM app?


  • Subject: Re: Use CFMessagePort in CFM app?
  • From: Quinn <email@hidden>
  • Date: Mon, 12 Jul 2004 17:03:57 +0100

At 5:36 -0400 8/6/04, Jan E. Schotsman wrote:
I am beginning to feel I am trying to do the impossible (using message
ports in a CFM app). I want to use the ports to communicate with a helper tool (which basically calls MovieExportFromDataRefToProcedures in its main thread because some QuickTime copmonents, notably sound components, are not thread safe yet). I can load all the function pointers from CoreFoundation framework, no problem there. Calling CFMessagePortCreateLocal and CFMessagePortCreateLocal in an MP thread seems to work.
I don't know what kCFRunLoopDefaultMode is, right now I m just guessing
CFSTR("").

Bad idea. You should use the global variable, not another copy of the string. You can get the global using CFBundleGetDataPointerForName (exactly analogous to CFBundleGetFunctionPointerForName).

Next problem is my port callbacks are never called. Is this a UPP-like
problem?

Yes.

Can I write some glue to make it work or is this a no-no?

Check out the CFM_MachO_CFM sample.

<http://developer.apple.com/samplecode/CFM_MachO_CFM/CFM_MachO_CFM.html>

S+E
--
Quinn "The Eskimo!" <http://www.apple.com/developer/>
Apple Developer Technical Support * Networking, Communications, Hardware
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