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memory: MemoryRegion: replace owner field with QOM parent 

The two are now the same.

Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2014-06-11 10:58:06 +02:00
parent b4fefef9d5
commit 22a893e4f5
2 changed files with 25 additions and 11 deletions
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1
include/exec/memory.h
View File

@ -141,7 +141,6 @@ struct MemoryRegion {
const MemoryRegionOps *ops;
const MemoryRegionIOMMUOps *iommu_ops;
void *opaque;
struct Object *owner;
MemoryRegion *container;
Int128 size;
hwaddr addr;

35
memory.c
View File

@ -905,9 +905,11 @@ void memory_region_init(MemoryRegion *mr,
const char *name,
uint64_t size)
{
object_initialize(mr, sizeof(*mr), TYPE_MEMORY_REGION);
if (!owner) {
owner = qdev_get_machine();
}
mr->owner = owner ? owner : qdev_get_machine();
object_initialize(mr, sizeof(*mr), TYPE_MEMORY_REGION);
mr->size = int128_make64(size);
if (size == UINT64_MAX) {
mr->size = int128_2_64();
@ -915,7 +917,7 @@ void memory_region_init(MemoryRegion *mr,
mr->name = g_strdup(name);
if (name) {
object_property_add_child_array(mr->owner, name, OBJECT(mr));
object_property_add_child_array(owner, name, OBJECT(mr));
object_unref(OBJECT(mr));
}
}
@ -1187,24 +1189,37 @@ void memory_region_destroy(MemoryRegion *mr)
Object *memory_region_owner(MemoryRegion *mr)
{
return mr->owner;
Object *obj = OBJECT(mr);
return obj->parent;
}
void memory_region_ref(MemoryRegion *mr)
{
if (mr && mr->owner) {
object_ref(mr->owner);
/* MMIO callbacks most likely will access data that belongs
* to the owner, hence the need to ref/unref the owner whenever
* the memory region is in use.
*
* The memory region is a child of its owner. As long as the
* owner doesn't call unparent itself on the memory region,
* ref-ing the owner will also keep the memory region alive.
* Memory regions without an owner are supposed to never go away,
* but we still ref/unref them for debugging purposes.
*/
Object *obj = OBJECT(mr);
if (obj && obj->parent) {
object_ref(obj->parent);
} else {
object_ref(OBJECT(mr));
object_ref(obj);
}
}
void memory_region_unref(MemoryRegion *mr)
{
if (mr && mr->owner) {
object_unref(mr->owner);
Object *obj = OBJECT(mr);
if (obj && obj->parent) {
object_unref(obj->parent);
} else {
object_unref(OBJECT(mr));
object_unref(obj);
}
}