diff options
| author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2014-10-02 19:56:02 +1000 |
|---|---|---|
| committer | Juan Quintela <quintela@trasno.org> | 2014-10-14 09:35:48 +0200 |
| commit | 94ed706d53a9018f24c67374c71f358fca2f0413 (patch) | |
| tree | c152b50ee203d0f6cf9a52b7b65054490f0deeda | |
| parent | 7ea2d269cb84ca7a2f4b7c3735634176f7c1dc35 (diff) | |
vmstate: Allow dynamic allocation for VBUFFER during migration
This extends use of VMS_ALLOC flag from arrays to VBUFFER as well.
This defines VMSTATE_VBUFFER_ALLOC_UINT32 which makes use of VMS_ALLOC
and uses uint32_t type for a size.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Juan Quintela <quintela@redhat.com>
| -rw-r--r-- | include/migration/vmstate.h | 11 | ||||
| -rw-r--r-- | vmstate.c | 13 |
2 files changed, 21 insertions, 3 deletions
diff --git a/include/migration/vmstate.h b/include/migration/vmstate.h index 9a001bd28f..e45fc49cb1 100644 --- a/include/migration/vmstate.h +++ b/include/migration/vmstate.h @@ -484,6 +484,17 @@ extern const VMStateInfo vmstate_info_bitmap; .start = (_start), \ } +#define VMSTATE_VBUFFER_ALLOC_UINT32(_field, _state, _version, _test, _start, _field_size) { \ + .name = (stringify(_field)), \ + .version_id = (_version), \ + .field_exists = (_test), \ + .size_offset = vmstate_offset_value(_state, _field_size, uint32_t),\ + .info = &vmstate_info_buffer, \ + .flags = VMS_VBUFFER|VMS_POINTER|VMS_ALLOC, \ + .offset = offsetof(_state, _field), \ + .start = (_start), \ +} + #define VMSTATE_BUFFER_UNSAFE_INFO(_field, _state, _version, _info, _size) { \ .name = (stringify(_field)), \ .version_id = (_version), \ @@ -49,9 +49,16 @@ static void *vmstate_base_addr(void *opaque, VMStateField *field, bool alloc) if (field->flags & VMS_POINTER) { if (alloc && (field->flags & VMS_ALLOC)) { - int n_elems = vmstate_n_elems(opaque, field); - if (n_elems) { - gsize size = n_elems * field->size; + gsize size = 0; + if (field->flags & VMS_VBUFFER) { + size = vmstate_size(opaque, field); + } else { + int n_elems = vmstate_n_elems(opaque, field); + if (n_elems) { + size = n_elems * field->size; + } + } + if (size) { *((void **)base_addr + field->start) = g_malloc(size); } } |