Package jnr.ffi.provider.jffi

Source Code of jnr.ffi.provider.jffi.NativeMemoryManager

/*
* Copyright (C) 2008-2010 Wayne Meissner
*
* This file is part of the JNR 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.
*/

package jnr.ffi.provider.jffi;

import jnr.ffi.Pointer;
import jnr.ffi.provider.BoundedMemoryIO;
import jnr.ffi.provider.IntPointer;

import java.nio.ByteBuffer;

public class NativeMemoryManager implements jnr.ffi.provider.MemoryManager {
    private final NativeRuntime runtime;

    public NativeMemoryManager(NativeRuntime runtime) {
        this.runtime = runtime;
    }
   
    public Pointer allocate(int size) {
        return new ArrayMemoryIO(runtime, size);
    }

    public Pointer allocateDirect(int size) {
        return new BoundedMemoryIO(TransientNativeMemory.allocate(runtime, size, Math.min(size, 16), false), 0, size);
    }

    public Pointer allocateDirect(int size, boolean clear) {
        return new BoundedMemoryIO(TransientNativeMemory.allocate(runtime, size, Math.min(size, 16), true), 0, size);
    }

    public Pointer allocateTemporary(int size) {
        return new BoundedMemoryIO(TransientNativeMemory.allocate(runtime, size, Math.min(size, 16), true), 0, size);
    }

    public Pointer allocateTemporary(int size, boolean clear) {
        return new BoundedMemoryIO(TransientNativeMemory.allocate(runtime, size, Math.min(size, 16), true), 0, size);
    }

    public Pointer newPointer(ByteBuffer buffer) {
        return new ByteBufferMemoryIO(runtime, buffer);
    }

    public Pointer newPointer(long address) {
        return new DirectMemoryIO(runtime, address);
    }

    public Pointer newPointer(long address, long size) {
        return new BoundedMemoryIO(new DirectMemoryIO(runtime, address), 0, size);
    }

    public Pointer newOpaquePointer(long address) {
        return new IntPointer(runtime, address);
    }

}
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