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Add VMSTATE_STRUCT_VARRAY_KNOWN

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At the moment we have VMSTATE_STRUCT_ARRAY that requires
the field is declared as an array of fixed size.
We also have VMSTATE_STRUCT_VARRAY_UINT* that allows
a field declared as a pointer, but requires that the length
is a field member in the structure being loaded/saved.

VMSTATE_STRUCT_VARRAY_KNOWN is for arrays defined as pointers
yet we somehow know the length of.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert 2016-01-06 12:23:38 +00:00 committed by Michael S. Tsirkin
parent 424e4a87d2
commit 2cf0148674
1 changed files with 13 additions and 0 deletions
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13
include/migration/vmstate.h
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@ -374,6 +374,19 @@ extern const VMStateInfo vmstate_info_bitmap;
.offset = vmstate_offset_array(_state, _field, _type, _num),\ .offset = vmstate_offset_array(_state, _field, _type, _num),\
} }
/* a variable length array (i.e. _type *_field) but we know the
* length
*/
#define VMSTATE_STRUCT_VARRAY_KNOWN(_field, _state, _num, _version, _vmsd, _type) { \
.name = (stringify(_field)), \
.num = (_num), \
.version_id = (_version), \
.vmsd = &(_vmsd), \
.size = sizeof(_type), \
.flags = VMS_STRUCT|VMS_ARRAY, \
.offset = offsetof(_state, _field), \
}
#define VMSTATE_STRUCT_VARRAY_UINT8(_field, _state, _field_num, _version, _vmsd, _type) { \ #define VMSTATE_STRUCT_VARRAY_UINT8(_field, _state, _field_num, _version, _vmsd, _type) { \
.name = (stringify(_field)), \ .name = (stringify(_field)), \
.num_offset = vmstate_offset_value(_state, _field_num, uint8_t), \ .num_offset = vmstate_offset_value(_state, _field_num, uint8_t), \