1 files changed, 88 insertions, 0 deletions
diff --git a/WebCore/platform/graphics/win/WKCACFContextFlusher.cpp b/WebCore/platform/graphics/win/WKCACFContextFlusher.cpp
new file mode 100644
index 0000000..e97b530
--- /dev/null
+++ b/WebCore/platform/graphics/win/WKCACFContextFlusher.cpp
@@ -0,0 +1,88 @@
+/*
+ * 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 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"
+
+#if USE(ACCELERATED_COMPOSITING)
+
+#include "WKCACFContextFlusher.h"
+
+#include <wtf/StdLibExtras.h>
+#include <QuartzCore/CACFContext.h>
+
+namespace WebCore {
+
+WKCACFContextFlusher& WKCACFContextFlusher::shared()
+{
+    DEFINE_STATIC_LOCAL(WKCACFContextFlusher, flusher, ());
+    return flusher;
+}
+
+WKCACFContextFlusher::WKCACFContextFlusher()
+{
+}
+
+WKCACFContextFlusher::~WKCACFContextFlusher()
+{
+}
+
+void WKCACFContextFlusher::addContext(CACFContextRef context)
+{
+    ASSERT(context);
+
+    m_contexts.add(context);
+    CFRetain(context);
+}
+
+void WKCACFContextFlusher::removeContext(CACFContextRef context)
+{
+    ASSERT(context);
+
+    ContextSet::iterator found = m_contexts.find(context);
+    if (found == m_contexts.end())
+        return;
+
+    CFRelease(*found);
+    m_contexts.remove(found);
+}
+
+void WKCACFContextFlusher::flushAllContexts()
+{
+    // addContext might get called beneath CACFContextFlush, and we don't want m_contexts to change while
+    // we're iterating over it, so we move the contexts into a local ContextSet and iterate over that instead.
+    ContextSet contextsToFlush;
+    contextsToFlush.swap(m_contexts);
+
+    ContextSet::const_iterator end = contextsToFlush.end();
+    for (ContextSet::const_iterator it = contextsToFlush.begin(); it != end; ++it) {
+        CACFContextRef context = *it;
+        CACFContextFlush(context);
+        CFRelease(context);
+    }
+}
+
+}
+
+#endif // USE(ACCELERATED_COMPOSITING)