Move Source/WTF/wtf to Source/wtf

Source/WTF/wtf/HashTable.cpp

-/*
-    Copyright (C) 2005 Apple Inc. All rights reserved.
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Library General Public
-    License as published by the Free Software Foundation; either
-    version 2 of the License, or (at your option) any later version.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Library General Public License for more details.
-
-    You should have received a copy of the GNU Library General Public License
-    along with this library; see the file COPYING.LIB.  If not, write to
-    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-    Boston, MA 02110-1301, USA.
-*/
-
-#include "config.h"
-#include "HashTable.h"
-#include "DataLog.h"
-
-namespace WTF {
-
-#if DUMP_HASHTABLE_STATS
-
-int HashTableStats::numAccesses;
-int HashTableStats::numCollisions;
-int HashTableStats::collisionGraph[4096];
-int HashTableStats::maxCollisions;
-int HashTableStats::numRehashes;
-int HashTableStats::numRemoves;
-int HashTableStats::numReinserts;
-
-static Mutex& hashTableStatsMutex()
-{
-    AtomicallyInitializedStatic(Mutex&, mutex = *new Mutex);
-    return mutex;
-}
-
-void HashTableStats::recordCollisionAtCount(int count)
-{
-    MutexLocker lock(hashTableStatsMutex());
-    if (count > maxCollisions)
-        maxCollisions = count;
-    numCollisions++;
-    collisionGraph[count]++;
-}
-
-void HashTableStats::dumpStats()
-{
-    MutexLocker lock(hashTableStatsMutex());
-
-    dataLogF("\nWTF::HashTable statistics\n\n");
-    dataLogF("%d accesses\n", numAccesses);
-    dataLogF("%d total collisions, average %.2f probes per access\n", numCollisions, 1.0 * (numAccesses + numCollisions) / numAccesses);
-    dataLogF("longest collision chain: %d\n", maxCollisions);
-    for (int i = 1; i <= maxCollisions; i++) {
-        dataLogF("  %d lookups with exactly %d collisions (%.2f%% , %.2f%% with this many or more)\n", collisionGraph[i], i, 100.0 * (collisionGraph[i] - collisionGraph[i+1]) / numAccesses, 100.0 * collisionGraph[i] / numAccesses);
-    }
-    dataLogF("%d rehashes\n", numRehashes);
-    dataLogF("%d reinserts\n", numReinserts);
-}
-
-#endif
-
-} // namespace WTF