[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v3-RESEND 26/28] libxl: ocaml: provide defaults for libxl types
On Mon, 2013-10-21 at 14:32 +0100, Rob Hoes wrote: > Libxl functions such as libxl_domain_create_new take large structs > of configuration parameters. Often, we would like to use the default > values for many of these parameters. > > The struct and keyed-union types in libxl have init functions, which > fill in the defaults for a given type. This commit provides an OCaml > interface to obtain records of defaults by calling the relevant init > function. > > These default records can be used as a base to construct your own > records, and to selectively override parameters where needed. > > For example, a Domain_create_info record can now be created as follows: > > Xenlight.Domain_create_info.({ default ctx () with > ty = Xenlight.DOMAIN_TYPE_PV; > name = Some vm_name; > uuid = vm_uuid; > }) > > For types with KeyedUnion fields, such as Domain_build_info, a record > with defaults is obtained by specifying the type key: > > Xenlight.Domain_build_info.default ctx ~ty:Xenlight.DOMAIN_TYPE_HVM () > > Signed-off-by: Rob Hoes <rob.hoes@xxxxxxxxxx> I have a feeling some of this could be done better, but that's my fault for laying such crappy groundwork, sorry! Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx> _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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