qemu/stubs/ram-block.c
Yury Kotov 754cb9c0eb exec: Change RAMBlockIterFunc definition
Currently, qemu_ram_foreach_* calls RAMBlockIterFunc with many
block-specific arguments. But often iter func needs RAMBlock*.
This refactoring is needed for fast access to RAMBlock flags from
qemu_ram_foreach_block's callback. The only way to achieve this now
is to call qemu_ram_block_from_host (which also enumerates blocks).

So, this patch reduces complexity of
qemu_ram_foreach_block() -> cb() -> qemu_ram_block_from_host()
from O(n^2) to O(n).

Fix RAMBlockIterFunc definition and add some functions to read
RAMBlock* fields witch were passed.

Signed-off-by: Yury Kotov <yury-kotov@yandex-team.ru>
Message-Id: <20190215174548.2630-2-yury-kotov@yandex-team.ru>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-03-06 10:49:17 +00:00

32 lines
468 B
C

#include "qemu/osdep.h"
#include "exec/ramlist.h"
#include "exec/cpu-common.h"
void *qemu_ram_get_host_addr(RAMBlock *rb)
{
return 0;
}
ram_addr_t qemu_ram_get_offset(RAMBlock *rb)
{
return 0;
}
ram_addr_t qemu_ram_get_used_length(RAMBlock *rb)
{
return 0;
}
void ram_block_notifier_add(RAMBlockNotifier *n)
{
}
void ram_block_notifier_remove(RAMBlockNotifier *n)
{
}
int qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque)
{
return 0;
}