JavaScriptCore-576.tar.gz

[apple/javascriptcore.git] / wtf / wince / MemoryManager.h

diff --git a/wtf/wince/MemoryManager.h b/wtf/wince/MemoryManager.h
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+/*
+ * Copyright (C) 2008-2009 Torch Mobile Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#pragma once
+
+#include <winbase.h>
+
+typedef struct HBITMAP__* HBITMAP;
+typedef struct HDC__* HDC;
+typedef void *HANDLE;
+typedef struct tagBITMAPINFO BITMAPINFO;
+
+namespace WTF {
+
+    class MemoryManager {
+    public:
+        MemoryManager();
+        ~MemoryManager();
+
+        bool allocationCanFail() const { return m_allocationCanFail; }
+        void setAllocationCanFail(bool c) { m_allocationCanFail = c; }
+
+        static HBITMAP createCompatibleBitmap(HDC hdc, int width, int height);
+        static HBITMAP createDIBSection(const BITMAPINFO* pbmi, void** ppvBits);
+        static void* m_malloc(size_t size);
+        static void* m_calloc(size_t num, size_t size);
+        static void* m_realloc(void* p, size_t size);
+        static void m_free(void*);
+        static bool resizeMemory(void* p, size_t newSize);
+        static void* allocate64kBlock();
+        static void free64kBlock(void*);
+        static bool onIdle(DWORD& timeLimitMs);
+        static LPVOID virtualAlloc(LPVOID lpAddress, DWORD dwSize, DWORD flAllocationType, DWORD flProtect);
+        static BOOL virtualFree(LPVOID lpAddress, DWORD dwSize, DWORD dwFreeType);
+
+    private:
+        friend MemoryManager* memoryManager();
+
+        bool m_allocationCanFail;
+    };
+
+    MemoryManager* memoryManager();
+
+    class MemoryAllocationCanFail {
+    public:
+        MemoryAllocationCanFail() : m_old(memoryManager()->allocationCanFail()) { memoryManager()->setAllocationCanFail(true); }
+        ~MemoryAllocationCanFail() { memoryManager()->setAllocationCanFail(m_old); }
+    private:
+        bool m_old;
+    };
+
+    class MemoryAllocationCannotFail {
+    public:
+        MemoryAllocationCannotFail() : m_old(memoryManager()->allocationCanFail()) { memoryManager()->setAllocationCanFail(false); }
+        ~MemoryAllocationCannotFail() { memoryManager()->setAllocationCanFail(m_old); }
+    private:
+        bool m_old;
+    };
+}
+
+using WTF::MemoryManager;
+using WTF::memoryManager;
+using WTF::MemoryAllocationCanFail;
+using WTF::MemoryAllocationCannotFail;