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Unified Diff: third_party/WebKit/Source/wtf/HashTable.cpp

Issue 2769603002: Move files in wtf/ to platform/wtf/ (Part 8). (Closed)
Patch Set: Rebase. Created 3 years, 9 months ago
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Index: third_party/WebKit/Source/wtf/HashTable.cpp
diff --git a/third_party/WebKit/Source/wtf/HashTable.cpp b/third_party/WebKit/Source/wtf/HashTable.cpp
deleted file mode 100644
index 0a8c37029a51ded193b3ededb5d80df370e2f45a..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/wtf/HashTable.cpp
+++ /dev/null
@@ -1,93 +0,0 @@
-/*
- 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 "wtf/HashTable.h"
-
-#if DUMP_HASHTABLE_STATS
-
-#include "wtf/DataLog.h"
-#include "wtf/ThreadingPrimitives.h"
-
-namespace WTF {
-
-static Mutex& hashTableStatsMutex() {
- DEFINE_THREAD_SAFE_STATIC_LOCAL(Mutex, mutex, new Mutex);
- return mutex;
-}
-
-HashTableStats& HashTableStats::instance() {
- DEFINE_THREAD_SAFE_STATIC_LOCAL(HashTableStats, stats, new HashTableStats);
- return stats;
-}
-
-void HashTableStats::copy(const HashTableStats* other) {
- numAccesses = other->numAccesses;
- numRehashes = other->numRehashes;
- numRemoves = other->numRemoves;
- numReinserts = other->numReinserts;
-
- maxCollisions = other->maxCollisions;
- numCollisions = other->numCollisions;
- memcpy(collisionGraph, other->collisionGraph, sizeof(collisionGraph));
-}
-
-void HashTableStats::recordCollisionAtCount(int count) {
- // The global hash table singleton needs to be atomically updated.
- bool isGlobalSingleton = this == &instance();
- if (isGlobalSingleton)
- hashTableStatsMutex().lock();
-
- if (count > maxCollisions)
- maxCollisions = count;
- numCollisions++;
- collisionGraph[count]++;
-
- if (isGlobalSingleton)
- hashTableStatsMutex().unlock();
-}
-
-void HashTableStats::dumpStats() {
- // Lock the global hash table singleton while dumping.
- bool isGlobalSingleton = this == &instance();
- if (isGlobalSingleton)
- hashTableStatsMutex().lock();
-
- 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);
-
- if (isGlobalSingleton)
- hashTableStatsMutex().unlock();
-}
-
-} // namespace WTF
-
-#endif
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