Mercurial > hg > graal-jvmci-8
diff jvmci/jdk.vm.ci.code/src/jdk/vm/ci/code/InstalledCode.java @ 22672:1bbd4a7c274b
Rename jdk.internal.jvmci to jdk.vm.ci
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
---|---|
date | Thu, 08 Oct 2015 17:28:41 -0700 |
parents | jvmci/jdk.internal.jvmci.code/src/jdk/internal/jvmci/code/InstalledCode.java@456800cd1a17 |
children | 088d24f0be35 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/jvmci/jdk.vm.ci.code/src/jdk/vm/ci/code/InstalledCode.java Thu Oct 08 17:28:41 2015 -0700 @@ -0,0 +1,136 @@ +/* + * Copyright (c) 2011, 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. + * + * 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 + * or visit www.oracle.com if you need additional information or have any + * questions. + */ +package jdk.vm.ci.code; + +/** + * Represents a compiled instance of a method. It may have been invalidated or removed in the + * meantime. + */ +public class InstalledCode { + + /** + * Raw address address of entity representing this installed code. + */ + private long address; + + /** + * Raw address of entryPoint of this installed code. + */ + protected long entryPoint; + + /** + * Counts how often the address field was reassigned. + */ + private long version; + + protected final String name; + + public InstalledCode(String name) { + this.name = name; + } + + public final void setAddressAndEntryPoint(long address, long entryPoint) { + this.address = address; + this.entryPoint = entryPoint; + version++; + } + + /** + * @return the address of entity representing this installed code. + */ + public final long getAddress() { + return address; + } + + /** + * @return the address of the normal entry point of the installed code. + */ + public final long getEntryPoint() { + return entryPoint; + } + + /** + * @return the version number of this installed code + */ + public final long getVersion() { + return version; + } + + /** + * Returns the name of this installed code. + */ + public String getName() { + return name; + } + + /** + * Returns the start address of this installed code if it is {@linkplain #isValid() valid}, 0 + * otherwise. + */ + public long getStart() { + return 0; + } + + /** + * @return true if the code represented by this object is still valid for invocation, false + * otherwise (may happen due to deopt, etc.) + */ + public boolean isValid() { + return entryPoint != 0; + } + + /** + * @return true if the code represented by this object still exists and might have live + * activations, false otherwise (may happen due to deopt, etc.) + */ + public boolean isAlive() { + return address != 0; + } + + /** + * Returns a copy of this installed code if it is {@linkplain #isValid() valid}, null otherwise. + */ + public byte[] getCode() { + return null; + } + + /** + * Invalidates this installed code such that any subsequent + * {@linkplain #executeVarargs(Object...) invocation} will throw an + * {@link InvalidInstalledCodeException} and all existing invocations will be deoptimized. + */ + public void invalidate() { + throw new UnsupportedOperationException(); + } + + /** + * Executes the installed code with a variable number of arguments. + * + * @param args the array of object arguments + * @return the value returned by the executed code + */ + @SuppressWarnings("unused") + public Object executeVarargs(Object... args) throws InvalidInstalledCodeException { + throw new UnsupportedOperationException(); + } +}