Initial Contribution
diff --git a/include/utils/MemoryHeapPmem.h b/include/utils/MemoryHeapPmem.h
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+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_MEMORY_HEAP_PMEM_H
+#define ANDROID_MEMORY_HEAP_PMEM_H
+
+#include <stdlib.h>
+#include <stdint.h>
+
+#include <utils/MemoryDealer.h>
+#include <utils/MemoryHeapBase.h>
+#include <utils/IMemory.h>
+#include <utils/Vector.h>
+
+namespace android {
+
+class MemoryHeapBase;
+
+// ---------------------------------------------------------------------------
+
+class SubRegionMemory;
+
+class MemoryHeapPmem : public HeapInterface, public MemoryHeapBase
+{
+public:
+ MemoryHeapPmem(const sp<MemoryHeapBase>& pmemHeap,
+ uint32_t flags = IMemoryHeap::MAP_ONCE);
+ ~MemoryHeapPmem();
+
+ /* HeapInterface additions */
+ virtual sp<IMemory> mapMemory(size_t offset, size_t size);
+
+ /* make the whole heap visible (you know who you are) */
+ virtual status_t slap();
+
+ /* hide (revoke) the whole heap (the client will see the garbage page) */
+ virtual status_t unslap();
+
+ /* revoke all allocations made by this heap */
+ virtual void revoke();
+
+private:
+ sp<MemoryHeapBase> mParentHeap;
+ mutable Mutex mLock;
+ Vector< wp<SubRegionMemory> > mAllocations;
+};
+
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_MEMORY_HEAP_PMEM_H