本文整理汇总了C++中nsClassHashtable::Count方法的典型用法代码示例。如果您正苦于以下问题：C++ nsClassHashtable::Count方法的具体用法？C++ nsClassHashtable::Count怎么用？C++ nsClassHashtable::Count使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类nsClassHashtable的用法示例。
在下文中一共展示了nsClassHashtable::Count方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: CacheEntry
nsPreflightCache::CacheEntry*
nsPreflightCache::GetEntry(nsIURI* aURI,
nsIPrincipal* aPrincipal,
bool aWithCredentials,
bool aCreate)
{
nsCString key;
if (!GetCacheKey(aURI, aPrincipal, aWithCredentials, key)) {
NS_WARNING("Invalid cache key!");
return nullptr;
}
CacheEntry* entry;
if (mTable.Get(key, &entry)) {
// Entry already existed so just return it. Also update the LRU list.
// Move to the head of the list.
entry->removeFrom(mList);
mList.insertFront(entry);
return entry;
}
if (!aCreate) {
return nullptr;
}
// This is a new entry, allocate and insert into the table now so that any
// failures don't cause items to be removed from a full cache.
entry = new CacheEntry(key);
if (!entry) {
NS_WARNING("Failed to allocate new cache entry!");
return nullptr;
}
NS_ASSERTION(mTable.Count() <= PREFLIGHT_CACHE_SIZE,
"Something is borked, too many entries in the cache!");
// Now enforce the max count.
if (mTable.Count() == PREFLIGHT_CACHE_SIZE) {
// Try to kick out all the expired entries.
TimeStamp now = TimeStamp::NowLoRes();
mTable.Enumerate(RemoveExpiredEntries, &now);
// If that didn't remove anything then kick out the least recently used
// entry.
if (mTable.Count() == PREFLIGHT_CACHE_SIZE) {
CacheEntry* lruEntry = static_cast<CacheEntry*>(mList.popLast());
MOZ_ASSERT(lruEntry);
// This will delete 'lruEntry'.
mTable.Remove(lruEntry->mKey);
NS_ASSERTION(mTable.Count() == PREFLIGHT_CACHE_SIZE - 1,
"Somehow tried to remove an entry that was never added!");
}
}
mTable.Put(key, entry);
mList.insertFront(entry);
return entry;
}示例2:
bool
nsLayoutHistoryState::HasStates() const
{
return mStates.Count() != 0;
}