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memory: add shorthand for invoking a callback on all listeners 

Signed-off-by: Avi Kivity <avi@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Avi Kivity 2012-02-08 13:58:44 +02:00
parent 2b50aa1f14
commit 946996e9c1
1 changed files with 18 additions and 34 deletions
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52
memory.c
View File

@ -678,31 +678,23 @@ static void address_space_update_ioeventfds(AddressSpace *as)
as->ioeventfd_nb = ioeventfd_nb;
}
typedef void ListenerCallback(MemoryListener *listener,
MemoryRegionSection *mrs);
#define MEMORY_LISTENER_CALL(_callback, _args...) \
do { \
MemoryListener *_listener; \
\
QLIST_FOREACH(_listener, &memory_listeners, link) { \
_listener->_callback(_listener, ##_args); \
} \
} while (0)
/* Want "void (&MemoryListener::*callback)(const MemoryRegionSection& s)" */
static void memory_listener_update_region(FlatRange *fr, AddressSpace *as,
size_t callback_offset)
{
MemoryRegionSection section = {
.mr = fr->mr,
.address_space = as->root,
.offset_within_region = fr->offset_in_region,
.size = int128_get64(fr->addr.size),
.offset_within_address_space = int128_get64(fr->addr.start),
};
MemoryListener *listener;
QLIST_FOREACH(listener, &memory_listeners, link) {
ListenerCallback *callback
= *(ListenerCallback **)((void *)listener + callback_offset);
callback(listener, &section);
}
}
#define MEMORY_LISTENER_UPDATE_REGION(fr, as, callback) \
memory_listener_update_region(fr, as, offsetof(MemoryListener, callback))
#define MEMORY_LISTENER_UPDATE_REGION(fr, as, callback) \
MEMORY_LISTENER_CALL(callback, &(MemoryRegionSection) { \
.mr = (fr)->mr, \
.address_space = (as)->root, \
.offset_within_region = (fr)->offset_in_region, \
.size = int128_get64((fr)->addr.size), \
.offset_within_address_space = int128_get64((fr)->addr.start), \
})
static void address_space_update_topology_pass(AddressSpace *as,
FlatView old_view,
@ -1483,23 +1475,15 @@ void memory_global_sync_dirty_bitmap(MemoryRegion *address_space)
void memory_global_dirty_log_start(void)
{
MemoryListener *listener;
cpu_physical_memory_set_dirty_tracking(1);
global_dirty_log = true;
QLIST_FOREACH(listener, &memory_listeners, link) {
listener->log_global_start(listener);
}
MEMORY_LISTENER_CALL(log_global_start);
}
void memory_global_dirty_log_stop(void)
{
MemoryListener *listener;
global_dirty_log = false;
QLIST_FOREACH(listener, &memory_listeners, link) {
listener->log_global_stop(listener);
}
MEMORY_LISTENER_CALL(log_global_stop);
cpu_physical_memory_set_dirty_tracking(0);
}