[libvirt] [PATCH 4/6] vbox: Handle different array representations of XPCOM and MSCOM
Eric Blake
eblake at redhat.com
Fri Dec 17 20:29:11 UTC 2010
On 12/17/2010 11:56 AM, Matthias Bolte wrote:
> Add a vboxArray to hide the details from the general driver code.
> ---
> src/vbox/vbox_MSCOMGlue.c | 107 +++++++++++
> src/vbox/vbox_MSCOMGlue.h | 15 ++
> src/vbox/vbox_XPCOMCGlue.c | 115 ++++++++++++
> src/vbox/vbox_XPCOMCGlue.h | 14 ++
> src/vbox/vbox_tmpl.c | 445 +++++++++++++++++++-------------------------
> 5 files changed, 447 insertions(+), 249 deletions(-)
>
> diff --git a/src/vbox/vbox_MSCOMGlue.c b/src/vbox/vbox_MSCOMGlue.c
> index 81a2c99..ded1275 100644
> --- a/src/vbox/vbox_MSCOMGlue.c
> +++ b/src/vbox/vbox_MSCOMGlue.c
> @@ -647,3 +647,110 @@ void
> VBoxCGlueTerm(void)
> {
> }
> +
> +
> +
> +/*
> + * In MSCOM an array is represented by a SAFEARRAY pointer. To access the items
> + * in the array the SafeArrayAccessData function is used to lock the array and
> + * get its contents. When the items aren't needed anymore the
> + * SafeArrayUnaccessData function is used to unlock the array. The pointer
> + * retuned by SafeArrayAccessData function get's invalid. Finally the
s/get's/becomes/
> + * SafeArrayDestroy function is called to destroy the array, it also releases
> + * or frees all items in the array according to their type.
> + */
> +
> +typedef HRESULT __stdcall (*SaveArrayGetter)(void *self, SAFEARRAY **array);
> +typedef HRESULT __stdcall (*SaveArrayGetterWithArg)(void *self, void *arg, SAFEARRAY **array);
Perhaps s/SaveArrayGetter/SafeArrayGetter/g?
But it looks like a good wrapper, as well as a mechanical change to
implement its use.
ACK.
--
Eric Blake eblake at redhat.com +1-801-349-2682
Libvirt virtualization library http://libvirt.org
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