/*! Calls low resource handlers for the given resources.
sLowResourceLock must be held.
*/
static void
call_handlers(uint32 lowResources)
{
if (sLowResourceHandlers.IsEmpty())
return;
// Add a marker, so we can drop the lock while calling the handlers and
// still iterate safely.
low_resource_handler marker;
sLowResourceHandlers.Insert(&marker, false);
while (low_resource_handler* handler
= sLowResourceHandlers.GetNext(&marker)) {
// swap with handler
sLowResourceHandlers.Swap(&marker, handler);
marker.priority = handler->priority;
int32 resources = handler->resources & lowResources;
if (resources != 0) {
recursive_lock_unlock(&sLowResourceLock);
handler->function(handler->data, resources,
low_resource_state_no_update(resources));
recursive_lock_lock(&sLowResourceLock);
}
}
// remove marker
sLowResourceHandlers.Remove(&marker);
}
status_t
unregister_low_resource_handler(low_resource_func function, void* data)
{
TRACE(("unregister_low_resource_handler(function = %p, data = %p)\n",
function, data));
RecursiveLocker locker(&sLowResourceLock);
HandlerList::Iterator iterator = sLowResourceHandlers.GetIterator();
while (iterator.HasNext()) {
low_resource_handler* handler = iterator.Next();
if (handler->function == function && handler->data == data) {
sLowResourceHandlers.Remove(handler);
free(handler);
return B_OK;
}
}
return B_ENTRY_NOT_FOUND;
}
