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migration/vmstate: Introduce VMSTATE_WITH_TMP_TEST() and VMSTATE_BITMAP_TEST()

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We'll make use of both next in the context of virtio-mem.

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>S
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
David Hildenbrand 2023-01-17 12:22:45 +01:00 • committed by Juan Quintela
parent 62f42625d4
commit 508f7988fd
1 changed files with 10 additions and 2 deletions
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12
include/migration/vmstate.h
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@ -719,8 +719,9 @@ extern const VMStateInfo vmstate_info_qlist;
* '_state' type * '_state' type
* That the pointer is right at the start of _tmp_type. * That the pointer is right at the start of _tmp_type.
*/ */
#define VMSTATE_WITH_TMP(_state, _tmp_type, _vmsd) { \ #define VMSTATE_WITH_TMP_TEST(_state, _test, _tmp_type, _vmsd) { \
.name = "tmp", \ .name = "tmp", \
.field_exists = (_test), \
.size = sizeof(_tmp_type) + \ .size = sizeof(_tmp_type) + \
QEMU_BUILD_BUG_ON_ZERO(offsetof(_tmp_type, parent) != 0) + \ QEMU_BUILD_BUG_ON_ZERO(offsetof(_tmp_type, parent) != 0) + \
type_check_pointer(_state, \ type_check_pointer(_state, \
@ -729,6 +730,9 @@ extern const VMStateInfo vmstate_info_qlist;
.info = &vmstate_info_tmp, \ .info = &vmstate_info_tmp, \
} }
#define VMSTATE_WITH_TMP(_state, _tmp_type, _vmsd) \
VMSTATE_WITH_TMP_TEST(_state, NULL, _tmp_type, _vmsd)
#define VMSTATE_UNUSED_BUFFER(_test, _version, _size) { \ #define VMSTATE_UNUSED_BUFFER(_test, _version, _size) { \
.name = "unused", \ .name = "unused", \
.field_exists = (_test), \ .field_exists = (_test), \
@ -752,8 +756,9 @@ extern const VMStateInfo vmstate_info_qlist;
/* _field_size should be a int32_t field in the _state struct giving the /* _field_size should be a int32_t field in the _state struct giving the
* size of the bitmap _field in bits. * size of the bitmap _field in bits.
*/ */
#define VMSTATE_BITMAP(_field, _state, _version, _field_size) { \ #define VMSTATE_BITMAP_TEST(_field, _state, _test, _version, _field_size) { \
.name = (stringify(_field)), \ .name = (stringify(_field)), \
.field_exists = (_test), \
.version_id = (_version), \ .version_id = (_version), \
.size_offset = vmstate_offset_value(_state, _field_size, int32_t),\ .size_offset = vmstate_offset_value(_state, _field_size, int32_t),\
.info = &vmstate_info_bitmap, \ .info = &vmstate_info_bitmap, \
@ -761,6 +766,9 @@ extern const VMStateInfo vmstate_info_qlist;
.offset = offsetof(_state, _field), \ .offset = offsetof(_state, _field), \
} }
#define VMSTATE_BITMAP(_field, _state, _version, _field_size) \
VMSTATE_BITMAP_TEST(_field, _state, NULL, _version, _field_size)
/* For migrating a QTAILQ. /* For migrating a QTAILQ.
* Target QTAILQ needs be properly initialized. * Target QTAILQ needs be properly initialized.
* _type: type of QTAILQ element * _type: type of QTAILQ element