Let me clarify this a bit more on the blocking case. Inside the guest
you need to create a (kernel) thread that calls the host HGCM service
and waits for an answer, which it will get when the host service detects
a directory change. As the host service is single threaded, you need to
create a separate thread that monitors for directory changes. That
additional host thread will asynchronously complete the HGCM service
call the guest makes.
This means the HGCM service call made by the guest is not completed
inside the svcCall handler (by calling g_pHelpers->pfnCallComplete).
Sander
Sander van Leeuwen wrote:
There's is no such reversed callback mechanism for HGCM. You'd either
have to poll or make a guest thread block in a wait for directory
change HGCM call. The latter
is not that easy as an HGCM client is single threaded.
Sander
Huihong Luo wrote:
Are there any APIs that can invoke vm's functions from host (opposite
to VbglHGCMCall which does vm to host calls)?
I am trying to implement directory change notification features on
windows shared folders. Basically, when files change in a host
folder, I want the host to invoke a callback function inside vm.
Thanks,
Huihong
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Sun Microsystems GmbH Sander van Leeuwen
Werkstrasse 24 Senior Staff Engineer, VirtualBox
71384 Weinstadt, Germany mailto:[EMAIL PROTECTED]
================================================
Sitz der Gesellschaft: Sun Microsystems GmbH,
Sonnenallee 1, 85551 Kirchheim-Heimstetten
Amtsgericht Muenchen: HRB 161028
Geschaeftsfuehrer: Thomas Schroeder,
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Kind regards / Mit freundlichen Gruessen / Met vriendelijke groet
--
Sun Microsystems GmbH Sander van Leeuwen
Werkstrasse 24 Senior Staff Engineer, VirtualBox
71384 Weinstadt, Germany mailto:[EMAIL PROTECTED]
================================================
Sitz der Gesellschaft: Sun Microsystems GmbH,
Sonnenallee 1, 85551 Kirchheim-Heimstetten
Amtsgericht Muenchen: HRB 161028
Geschaeftsfuehrer: Thomas Schroeder,
Wolfgang Engels, Dr. Roland Boehmer
Vorsitzender des Aufsichtsrates: Martin Haering
================================================
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