Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 78 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/wtf/ArrayBuffer.cpp b/Source/JavaScriptCore/wtf/ArrayBuffer.cpp
new file mode 100644
index 000000000..45cfa1deb
--- /dev/null
+++ b/Source/JavaScriptCore/wtf/ArrayBuffer.cpp
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2009 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#include "config.h"
+#include "ArrayBuffer.h"
+
+#include "ArrayBufferView.h"
+
+#include <wtf/RefPtr.h>
+#include <wtf/Vector.h>
+
+namespace WTF {
+
+bool ArrayBuffer::transfer(ArrayBufferContents& result, Vector<RefPtr<ArrayBufferView> >& neuteredViews)
+{
+    RefPtr<ArrayBuffer> keepAlive(this);
+
+    if (!m_contents.m_data) {
+        result.m_data = 0;
+        return false;
+    }
+
+    m_contents.transfer(result);
+
+    while (m_firstView) {
+        ArrayBufferView* current = m_firstView;
+        removeView(current);
+        current->neuter();
+        neuteredViews.append(current);
+    }
+    return true;
+}
+
+void ArrayBuffer::addView(ArrayBufferView* view)
+{
+    view->m_buffer = this;
+    view->m_prevView = 0;
+    view->m_nextView = m_firstView;
+    if (m_firstView)
+        m_firstView->m_prevView = view;
+    m_firstView = view;
+}
+
+void ArrayBuffer::removeView(ArrayBufferView* view)
+{
+    ASSERT(this == view->m_buffer);
+    if (view->m_nextView)
+        view->m_nextView->m_prevView = view->m_prevView;
+    if (view->m_prevView)
+        view->m_prevView->m_nextView = view->m_nextView;
+    if (m_firstView == view)
+        m_firstView = view->m_nextView;
+    view->m_prevView = view->m_nextView = 0;
+}
+
+}