Optimize QMutexPool

Make the get() function inline
and simplify the hash computation

Reviewed-by: brad

1 files changed, 9 insertions, 1 deletions

diff --git a/src/corelib/thread/qmutexpool_p.h b/src/corelib/thread/qmutexpool_p.h
index 1a45ba9..b2cd210 100644
--- a/src/corelib/thread/qmutexpool_p.h
+++ b/src/corelib/thread/qmutexpool_p.h
@@ -67,11 +67,19 @@ public:
     explicit QMutexPool(QMutex::RecursionMode recursionMode = QMutex::NonRecursive, int size = 131);
     ~QMutexPool();
 
-    QMutex *get(const void *address);
+    inline QMutex *get(const void *address) {
+        int index = uint(quintptr(address)) % mutexes.count();
+        QMutex *m = mutexes[index];
+        if (m)
+            return m;
+        else
+            return createMutex(index);
+    }
     static QMutexPool *instance();
     static QMutex *globalInstanceGet(const void *address);
 
 private:
+    QMutex *createMutex(int index);
     QVarLengthArray<QAtomicPointer<QMutex>, 131> mutexes;
     QMutex::RecursionMode recursionMode;
 };