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vmstate: Add support for multiplying size for a constant 

When the size that we want to transmit is in another field, but in an
unit different that bytes

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
master
Juan Quintela 2009-12-02 12:36:43 +01:00 committed by Anthony Liguori
parent bfb811ade5
commit 33599e2a61
2 changed files with 19 additions and 0 deletions
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13
hw/hw.h
View File

@ -295,6 +295,7 @@ enum VMStateFlags {
VMS_ARRAY_OF_POINTER = 0x040,
VMS_VARRAY_UINT16 = 0x080, /* Array with size in uint16_t field */
VMS_VBUFFER = 0x100, /* Buffer with size in int32_t field */
VMS_MULTIPLY = 0x200, /* multiply "size" field by field_size */
};
typedef struct {
@ -485,6 +486,18 @@ extern const VMStateInfo vmstate_info_unused_buffer;
.offset = vmstate_offset_buffer(_state, _field) + _start, \
}
#define VMSTATE_BUFFER_MULTIPLY(_field, _state, _version, _test, _start, _field_size, _multiply) { \
.name = (stringify(_field)), \
.version_id = (_version), \
.field_exists = (_test), \
.size_offset = vmstate_offset_value(_state, _field_size, uint32_t),\
.size = (_multiply), \
.info = &vmstate_info_buffer, \
.flags = VMS_VBUFFER|VMS_MULTIPLY, \
.offset = offsetof(_state, _field), \
.start = (_start), \
}
#define VMSTATE_VBUFFER(_field, _state, _version, _test, _start, _field_size) { \
.name = (stringify(_field)), \
.version_id = (_version), \

6
savevm.c
View File

@ -1147,6 +1147,9 @@ int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,
if (field->flags & VMS_VBUFFER) {
size = *(int32_t *)(opaque+field->size_offset);
if (field->flags & VMS_MULTIPLY) {
size *= field->size;
}
}
if (field->flags & VMS_ARRAY) {
n_elems = field->num;
@ -1200,6 +1203,9 @@ void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd,
if (field->flags & VMS_VBUFFER) {
size = *(int32_t *)(opaque+field->size_offset);
if (field->flags & VMS_MULTIPLY) {
size *= field->size;
}
}
if (field->flags & VMS_ARRAY) {
n_elems = field->num;