Improve bindings startup performance

1 files changed, 124 insertions, 0 deletions

diff --git a/src/declarative/qml/qpodvector_p.h b/src/declarative/qml/qpodvector_p.h
new file mode 100644
index 0000000..55c04e7
--- /dev/null
+++ b/src/declarative/qml/qpodvector_p.h
@@ -0,0 +1,124 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QPODVECTOR_P_H
+#define QPODVECTOR_P_H
+
+#include <QtCore/qglobal.h>
+
+QT_BEGIN_NAMESPACE
+
+template<class T>
+class QPODVector 
+{
+public:
+    QPODVector()
+    : m_count(0), m_capacity(0), m_data(0) {}
+
+    const T &at(int idx) {
+        return m_data[idx];
+    }
+
+    T &operator[](int idx) {
+        return m_data[idx];
+    }
+
+    void clear() {
+        m_count = 0;
+    }
+
+    void prepend(const T &v) {
+        insert(0, v);
+    }
+
+    void append(const T &v) {
+        insert(m_count, v);
+    }
+
+    void insert(int idx, const T &v) {
+        if (m_count == m_capacity) {
+            m_capacity += 1024;
+            m_data = (T *)realloc(m_data, m_capacity * sizeof(T));
+        }
+        int moveCount = m_count - idx;
+        if (moveCount)
+            ::memmove(m_data + idx + 1, m_data + idx, moveCount * sizeof(T));
+        m_count++;
+        m_data[idx] = v;
+    }
+
+    void insertBlank(int idx, int count) {
+        int newSize = m_count + count;
+        if (newSize >= m_capacity) {
+            m_capacity = (newSize + 1023) & 0xFFFFFC00;
+            m_data = (T *)realloc(m_data, m_capacity * sizeof(T));
+        }
+
+        int moveCount = m_count - idx;
+        if (moveCount) 
+            ::memmove(m_data + idx + count,  m_data + idx, 
+                      moveCount * sizeof(T));
+        m_count = newSize;
+    }
+
+    void remove(int idx, int count = 1) {
+        int moveCount = m_count - (idx + count);
+        if (moveCount)
+            ::memmove(m_data + idx, m_data + idx + count, 
+                      moveCount * sizeof(T));
+        m_count -= count;
+    }
+    
+    int count() const {
+        return m_count;
+    }
+
+    QPODVector<T> &operator<<(const T &v) { append(v); return *this; }
+private:
+    QPODVector(const QPODVector &);
+    QPODVector &operator=(const QPODVector &);
+    int m_count;
+    int m_capacity;
+    T *m_data;
+};
+QT_END_NAMESPACE
+
+#endif