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/*
* This file is available under and governed by the GNU General Public
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/*
Copyright 2009-2013 Attila Szegedi
Licensed under both the Apache License, Version 2.0 (the "Apache License")
and the BSD License (the "BSD License"), with licensee being free to
choose either of the two at their discretion.
You may not use this file except in compliance with either the Apache
License or the BSD License.
If you choose to use this file in compliance with the Apache License, the
following notice applies to you:
You may obtain a copy of the Apache 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.
If you choose to use this file in compliance with the BSD License, the
following notice applies to you:
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the copyright holder nor the names of
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this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
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*/
package jdk.dynalink.support;
import java.lang.invoke.CallSite;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MutableCallSite;
import jdk.dynalink.CallSiteDescriptor;
import jdk.dynalink.RelinkableCallSite;
import jdk.dynalink.linker.GuardedInvocation;
A basic implementation of the RelinkableCallSite as a MutableCallSite. It carries a CallSiteDescriptor passed in the constructor and provides the correct implementation of the initialize(MethodHandle) method. Subclasses must provide RelinkableCallSite.relink(GuardedInvocation, MethodHandle) and RelinkableCallSite.resetAndRelink(GuardedInvocation, MethodHandle) methods. /**
* A basic implementation of the {@link RelinkableCallSite} as a
* {@link MutableCallSite}. It carries a {@link CallSiteDescriptor} passed in
* the constructor and provides the correct implementation of the
* {@link #initialize(MethodHandle)} method. Subclasses must provide
* {@link #relink(GuardedInvocation, MethodHandle)} and
* {@link #resetAndRelink(GuardedInvocation, MethodHandle)}
* methods.
*/
public abstract class AbstractRelinkableCallSite extends MutableCallSite implements RelinkableCallSite {
private final CallSiteDescriptor descriptor;
Creates a new abstract relinkable call site.
Params: - descriptor – the descriptor for this call site that will be returned from
getDescriptor(). The call site's CallSite.type() will be equal to descriptor's CallSiteDescriptor.getMethodType().
Throws: - NullPointerException – if
descriptor is null.
/**
* Creates a new abstract relinkable call site.
* @param descriptor the descriptor for this call site that will be returned
* from {@link #getDescriptor()}. The call site's {@link CallSite#type()}
* will be equal to descriptor's {@link CallSiteDescriptor#getMethodType()}.
* @throws NullPointerException if {@code descriptor} is null.
*/
protected AbstractRelinkableCallSite(final CallSiteDescriptor descriptor) {
super(descriptor.getMethodType());
this.descriptor = descriptor;
}
@Override
public CallSiteDescriptor getDescriptor() {
return descriptor;
}
@Override
public void initialize(final MethodHandle relinkAndInvoke) {
setTarget(relinkAndInvoke);
}
}