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Optimize for the more common case.

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This commit is contained in:
JoelKatz
2013-01-08 16:16:20 -08:00
parent 3712f0f2cb
commit aeb7a2af5d
1 changed files with 10 additions and 7 deletions
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17
src/cpp/ripple/TaggedCache.h
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@@ -286,6 +286,14 @@ boost::shared_ptr<c_Data> TaggedCache<c_Key, c_Data>::fetch(const key_type& key)
{ // fetch us a shared pointer to the stored data object
boost::recursive_mutex::scoped_lock sl(mLock);
// Is it in the cache?
cache_iterator cit = mCache.find(key);
if (cit != mCache.end())
{
cit->second.first = time(NULL); // Yes, refresh
return cit->second.second;
}
// Is it in the map?
map_iterator mit = mMap.find(key);
if (mit == mMap.end())
@@ -298,13 +306,8 @@ boost::shared_ptr<c_Data> TaggedCache<c_Key, c_Data>::fetch(const key_type& key)
return cachedData;
}
// Valid in map, is it in the cache?
cache_iterator cit = mCache.find(key);
if (cit != mCache.end())
cit->second.first = time(NULL); // Yes, refresh
else // No, add to cache
mCache.insert(cache_pair(key, cache_entry(time(NULL), cachedData)));
// Put it back in the cache
mCache.insert(cache_pair(key, cache_entry(time(NULL), cachedData)));
return cachedData;
}