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/***** BEGIN LICENSE BLOCK *****
 * Version: EPL 1.0/GPL 2.0/LGPL 2.1
 *
 * Copyright (C) 2007-2011 JRuby Team 
 *
 * The contents of this file are subject to the Common Public
 * License Version 1.0 (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.eclipse.org/legal/cpl-v10.html
 *
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 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
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 * either of the GNU General Public License Version 2 or later (the "GPL"),
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 * in which case the provisions of the GPL or the LGPL are applicable instead
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package org.jruby.util;

import jnr.ffi.*;
import jnr.ffi.LibraryOption;
import java.util.HashMap;
import java.util.Map;

/**
 * A binding of a few key win32 functions we need to behave properly.
 */
public class WindowsFFI {
    public static interface Kernel32 {
        int GetProcessId(int handle);
    }

    private static final class SingletonHolder {
        static final Kernel32 Kernel32;
        static {
            Map options = new HashMap();
            options.put(LibraryOption.CallingConvention, CallingConvention.STDCALL);
            Kernel32 = Library.loadLibrary("Kernel32.dll", Kernel32.class, options);
        }
    }

    public static Kernel32 getKernel32() {
        return SingletonHolder.Kernel32;
    }
}