/*
* Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package com.apple.jobjc;
import com.apple.jobjc.Coder.PrimitivePointerCoder;
class CIF {
private static native int getSizeofCIF();
private static final int SIZEOF = getSizeofCIF();
private static native boolean prepCIF(long cifPtr, int nargs, long retFFITypePtr, long argsPtr);
public static CIF createCIFFor(final NativeArgumentBuffer args, final Coder returnCoder, final Coder ... argCoders) {
NativeBuffer cifBuf = new NativeBuffer(SIZEOF + (argCoders.length * JObjCRuntime.PTR_LEN));
final long argsPtr = cifBuf.bufferPtr + SIZEOF;
{
long argsIterPtr = argsPtr;
for(final Coder coder : argCoders){
PrimitivePointerCoder.INST.push(args.runtime, argsIterPtr, coder.getFFITypePtr());
argsIterPtr += JObjCRuntime.PTR_LEN;
}
}
boolean ok = prepCIF(cifBuf.bufferPtr, argCoders.length, returnCoder.getFFITypePtr(), argsPtr);
if(!ok)
throw new RuntimeException("ffi_prep_cif failed.");
return new CIF(cifBuf, returnCoder, argCoders);
}
final NativeBuffer cif;
// CIF needs to keep refs to the Coders, so they don't get finalized and their FFITypes freed.
final Coder returnCoder;
final Coder[] argCoders;
private CIF(final NativeBuffer cif, Coder returnCoder, Coder... argCoders) {
this.cif = cif;
this.returnCoder = returnCoder;
this.argCoders = argCoders;
}
}