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}
- (id)nextObject
{
XMPPSRVEntry *ret;
of_list_object_t *iter;
uint32_t totalWeight = 0;
BOOL found = NO;
if (done)
return nil;
if (listIter == NULL)
listIter = [list lastListObject];
if (listIter == NULL)
return nil;
if (subListCopy == nil)
subListCopy = [listIter->object copy];
/* FIXME: Handle empty subListCopy */
for (iter = [subListCopy firstListObject]; iter != NULL;
iter = iter->next) {
totalWeight += [iter->object weight];
[iter->object setAccumulatedWeight: totalWeight];
}
while (!found) {
uint32_t randomWeight;
RAND_pseudo_bytes((uint8_t*)&randomWeight, sizeof(uint32_t));
randomWeight %= (totalWeight + 1);
for (iter = [subListCopy firstListObject]; iter != NULL;
iter = iter->next) {
if ([iter->object accumulatedWeight] >= randomWeight) {
ret = [[iter->object retain] autorelease];
[subListCopy removeListObject: iter];
found = YES;
break;
}
}
}
if ([subListCopy count] == 0) {
[subListCopy release];
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<
>
>
>
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}
- (id)nextObject
{
XMPPSRVEntry *ret;
of_list_object_t *iter;
uint32_t totalWeight = 0;
BOOL loop = YES;
if (done)
return nil;
if (listIter == NULL)
listIter = [list lastListObject];
if (listIter == NULL)
return nil;
if (subListCopy == nil)
subListCopy = [listIter->object copy];
for (iter = [subListCopy firstListObject]; iter != NULL;
iter = iter->next) {
totalWeight += [iter->object weight];
[iter->object setAccumulatedWeight: totalWeight];
}
if ([subListCopy count] == 0)
loop = NO;
while (loop) {
uint32_t randomWeight;
RAND_pseudo_bytes((uint8_t*)&randomWeight, sizeof(uint32_t));
randomWeight %= (totalWeight + 1);
for (iter = [subListCopy firstListObject]; iter != NULL;
iter = iter->next) {
if ([iter->object accumulatedWeight] >= randomWeight) {
ret = [[iter->object retain] autorelease];
[subListCopy removeListObject: iter];
loop = NO;
break;
}
}
}
if ([subListCopy count] == 0) {
[subListCopy release];
|