void
StoreBuffer::MonoTypeBuffer<T>::compactRemoveDuplicates(StoreBuffer *owner)
{
EdgeSet duplicates;
if (!duplicates.init())
return; /* Failure to de-dup is acceptable. */
LifoAlloc::Enum insert(*storage_);
for (LifoAlloc::Enum e(*storage_); !e.empty(); e.popFront<T>()) {
T *edge = e.get<T>();
if (!duplicates.has(edge->location())) {
insert.updateFront<T>(*edge);
insert.popFront<T>();
/* Failure to insert will leave the set with duplicates. Oh well. */
duplicates.put(edge->location());
}
}
storage_->release(insert.mark());
duplicates.clear();
}
void
StoreBuffer::RelocatableMonoTypeBuffer<T>::compactMoved(StoreBuffer *owner)
{
LifoAlloc &storage = *this->storage_;
EdgeSet invalidated;
if (!invalidated.init())
CrashAtUnhandlableOOM("RelocatableMonoTypeBuffer::compactMoved: Failed to init table.");
/* Collect the set of entries which are currently invalid. */
for (LifoAlloc::Enum e(storage); !e.empty(); e.popFront<T>()) {
T *edge = e.get<T>();
if (edge->isTagged()) {
if (!invalidated.put(edge->location()))
CrashAtUnhandlableOOM("RelocatableMonoTypeBuffer::compactMoved: Failed to put removal.");
} else {
invalidated.remove(edge->location());
}
}
/* Remove all entries which are in the invalidated set. */
LifoAlloc::Enum insert(storage);
for (LifoAlloc::Enum e(storage); !e.empty(); e.popFront<T>()) {
T *edge = e.get<T>();
if (!edge->isTagged() && !invalidated.has(edge->location())) {
insert.updateFront<T>(*edge);
insert.popFront<T>();
}
}
storage.release(insert.mark());
invalidated.clear();
#ifdef DEBUG
for (LifoAlloc::Enum e(storage); !e.empty(); e.popFront<T>())
JS_ASSERT(!e.get<T>()->isTagged());
#endif
}