1 files changed, 64 insertions, 0 deletions
diff --git a/JavaScriptCore/wtf/OSAllocatorWin.cpp b/JavaScriptCore/wtf/OSAllocatorWin.cpp
new file mode 100644
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+++ b/JavaScriptCore/wtf/OSAllocatorWin.cpp
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+/*
+ * Copyright (C) 2010 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. AND ITS CONTRIBUTORS ``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 INC. OR ITS 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 "OSAllocator.h"
+
+#if OS(WINDOWS)
+
+#include "windows.h"
+
+namespace WTF {
+
+void* OSAllocator::reserve(size_t bytes)
+{
+    return VirtualAlloc(0, bytes, MEM_RESERVE, PAGE_READWRITE);
+}
+
+void* OSAllocator::reserveAndCommit(size_t bytes)
+{
+    return VirtualAlloc(0, bytes, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
+}
+
+void OSAllocator::commit(void* address, size_t bytes)
+{
+    VirtualAlloc(address, bytes, MEM_COMMIT, PAGE_READWRITE);
+}
+
+void OSAllocator::decommit(void* address, size_t bytes)
+{
+    VirtualFree(address, bytes, MEM_DECOMMIT);
+}
+
+void OSAllocator::release(void* address, size_t bytes)
+{
+    // According to http://msdn.microsoft.com/en-us/library/aa366892(VS.85).aspx,
+    // dwSize must be 0 if dwFreeType is MEM_RELEASE.
+    VirtualFree(address, 0, MEM_RELEASE);
+}
+
+} // namespace WTF
+
+#endif