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* qapi: Replace start_optional()/end_optional() by optional()Markus Armbruster2014-05-151-3/+2
| | | | | | | | | | | | | | | | | | | | | | | Semantics of end_optional() differ subtly from the other end_FOO() callbacks: when start_FOO() succeeds, the matching end_FOO() gets called regardless of what happens in between. end_optional() gets called only when everything in between succeeds as well. Entirely undocumented, like all of the visitor API. The only user of Visitor Callback end_optional() never did anything, and was removed in commit 9f9ab46. I'm about to clean up error handling in the generated visitor code, and end_optional() is in my way. No users mean no test cases, and making non-trivial cleanup transformations without test cases doesn't strike me as a good idea. Drop end_optional(), and rename start_optional() to optional(). We can always go back to a pair of callbacks when we have an actual need. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
* monitor: add object-add (QMP) and object_add (HMP) commandPaolo Bonzini2014-01-061-2/+1
| | | | | | | | | | | | Add two commands that are the monitor counterparts of -object. The commands have the same Visitor-based implementation, but use different kinds of visitors so that the HMP command has a DWIM string-based syntax, while the QMP variant accepts a stricter JSON-based properties dictionary. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Tested-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
* qapi: Anonymous unionsKevin Wolf2013-07-261-0/+3
| | | | | | | | | | | | | | | | | | | | | The discriminator for anonymous unions is the data type. This allows to have a union type that allows both of these: { 'file': 'my_existing_block_device_id' } { 'file': { 'filename': '/tmp/mydisk.qcow2', 'read-only': true } } Unions like this are specified in the schema with an empty dict as discriminator. For this example you could take: { 'union': 'BlockRef', 'discriminator': {}, 'data': { 'definition': 'BlockOptions', 'reference': 'str' } } { 'type': 'ExampleObject', 'data: { 'file': 'BlockRef' } } Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
* qapi: Add visitor for implicit structsKevin Wolf2013-07-261-0/+3
| | | | | | | | | | These can be used when an embedded struct is parsed and members not belonging to the struct may be present in the input (e.g. parsing a flat namespace QMP union, where fields from both the base and one of the alternative types are mixed in the JSON object) Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
* qapi: pad GenericList value fields to 64 bitsMichael Roth2013-05-301-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | With the introduction of native list types, we now have types such as int64List where the 'value' field is not a pointer, but the actual 64-bit value. On 32-bit architectures, this can lead to situations where 'next' field offset in GenericList does not correspond to the 'next' field in the types that we cast to GenericList when using the visit_next_list() interface, causing issues when we attempt to traverse linked list structures of these types. To fix this, pad the 'value' field of GenericList and other schema-defined/native *List types out to 64-bits. This is less memory-efficient for 32-bit architectures, but allows us to continue to rely on list-handling interfaces that target GenericList to simply visitor implementations. In the future we can improve efficiency by defaulting to using native C array backends to handle list of non-pointer types, which would be more memory efficient in itself and allow us to roll back this change. Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
* qapi: move include files to include/qobject/Paolo Bonzini2012-12-191-0/+55
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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