/*
 * Copyright (c) 2013, 2019, 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.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 */
package com.oracle.svm.graal.meta;

import static com.oracle.svm.core.util.VMError.shouldNotReachHere;

import com.oracle.svm.core.code.CodeInfo;
import com.oracle.svm.core.code.CodeInfoTable;
import com.oracle.svm.core.deopt.SubstrateInstalledCode;
import com.oracle.svm.core.deopt.SubstrateSpeculationLog;
import com.oracle.svm.core.graal.meta.SharedRuntimeMethod;
import com.oracle.svm.core.thread.VMOperation;
import com.oracle.svm.core.util.VMError;

import jdk.vm.ci.code.InstalledCode;
import jdk.vm.ci.meta.ResolvedJavaMethod;

Represents the installed code of a runtime compiled method. Note that Truffle uses its own implementation of SubstrateInstalledCode, so no code within Substrate VM must assume that this is the only representation of runtime compiled code. Metadata for the code is maintained by the class CodeInfo. /**
 * Represents the installed code of a runtime compiled method. Note that Truffle uses its own
 * implementation of {@link SubstrateInstalledCode}, so no code within Substrate VM must assume that
 * this is the only representation of runtime compiled code.
 *
 * Metadata for the code is maintained by the class {@link CodeInfo}.
 */
public class SubstrateInstalledCodeImpl extends InstalledCode implements SubstrateInstalledCode {

    public SubstrateInstalledCodeImpl(SharedRuntimeMethod method) {
        super(method.format("%H.%n#(%p)"));
    }

    public SubstrateInstalledCodeImpl(String name, SharedRuntimeMethod method) {
        super(name != null ? name : method.format("%H.%n#(%p)"));
    }

    @Override
    public ResolvedJavaMethod getMethod() {
        return null;
    }

    @Override
    public void setAddress(long address, ResolvedJavaMethod method) {
        assert VMOperation.isInProgressAtSafepoint();
        this.address = address;
        this.entryPoint = address;
    }

    @Override
    public void clearAddress() {
        assert VMOperation.isInProgressAtSafepoint();
        this.entryPoint = 0;
        this.address = 0;
    }

    @Override
    public void invalidate() {
        CodeInfoTable.invalidateInstalledCode(this);
    }

    
Currently not supported. Existing code would need modifications to ensure that there cannot be a safepoint between a read of InstalledCode.entryPoint (such as, at the end of InstalledCode.getEntryPoint()), and the invocation of the entry point that was read. /**
     * Currently not supported. Existing code would need modifications to ensure that there cannot
     * be a safepoint between a read of {@link #entryPoint} (such as, at the end of
     * {@link #getEntryPoint()}), and the invocation of the entry point that was read.
     */
    @Override
    public void invalidateWithoutDeoptimization() {
        assert VMOperation.isInProgressAtSafepoint();
        throw VMError.unimplemented();
    }

    @Override
    public SubstrateSpeculationLog getSpeculationLog() {
        return null;
    }

    @Override
    public long getStart() {
        throw shouldNotReachHere("No implementation in Substrate VM");
    }

    @Override
    public byte[] getCode() {
        throw shouldNotReachHere("No implementation in Substrate VM");
    }

    @Override
    public Object executeVarargs(Object... args) {
        throw shouldNotReachHere("No implementation in Substrate VM");
    }
}