Mercurial > hg > truffle
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotInstalledCode.java @ 9025:ff5a32117e02
Implement fast invocation of installed code (direct tail call to the target machine code address).
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Fri, 12 Apr 2013 01:53:52 +0200 |
parents | 2b840ae76df1 |
children | 22851e342f0e |
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/* * 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 com.oracle.graal.hotspot.meta; import java.lang.reflect.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.hotspot.*; /** * Implementation of {@link InstalledCode} for HotSpot. Stores a reference to the nmethod which * contains the compiled code. The nmethod also stores a weak reference to the HotSpotCompiledMethod * instance which is necessary to keep the nmethod from being unloaded. */ public class HotSpotInstalledCode extends CompilerObject implements InstalledCode { private static final long serialVersionUID = 156632908220561612L; private final HotSpotResolvedJavaMethod method; private final boolean isDefault; long nmethod; long start; public HotSpotInstalledCode(HotSpotResolvedJavaMethod method, boolean isDefault) { this.method = method; this.isDefault = isDefault; } public boolean isDefault() { return isDefault; } public long getnmethod() { return nmethod; } @Override public ResolvedJavaMethod getMethod() { return method; } @Override public boolean isValid() { return HotSpotGraalRuntime.getInstance().getCompilerToVM().isInstalledCodeValid(nmethod); } @Override public void invalidate() { HotSpotGraalRuntime.getInstance().getCompilerToVM().invalidateInstalledCode(nmethod); } @Override public String toString() { return String.format("InstalledCode[method=%s, nmethod=0x%x]", method, nmethod); } @Override public Object execute(Object arg1, Object arg2, Object arg3) throws InvalidInstalledCodeException { assert method.getSignature().getParameterCount(!Modifier.isStatic(method.getModifiers())) == 3; assert method.getSignature().getParameterKind(0) == Kind.Object; assert method.getSignature().getParameterKind(1) == Kind.Object; assert !Modifier.isStatic(method.getModifiers()) || method.getSignature().getParameterKind(2) == Kind.Object; return HotSpotGraalRuntime.getInstance().getCompilerToVM().executeCompiledMethod(arg1, arg2, arg3, nmethod); } private boolean checkArgs(Object... args) { JavaType[] sig = MetaUtil.signatureToTypes(method); assert args.length == sig.length : MetaUtil.format("%H.%n(%p): expected ", method) + sig.length + " args, got " + args.length; for (int i = 0; i < sig.length; i++) { Object arg = args[i]; if (arg == null) { assert sig[i].getKind() == Kind.Object : MetaUtil.format("%H.%n(%p): expected arg ", method) + i + " to be Object, not " + sig[i]; } else if (sig[i].getKind() != Kind.Object) { assert sig[i].getKind().toBoxedJavaClass() == arg.getClass() : MetaUtil.format("%H.%n(%p): expected arg ", method) + i + " to be " + sig[i] + ", not " + arg.getClass(); } } return true; } @Override public Object executeVarargs(Object... args) throws InvalidInstalledCodeException { assert checkArgs(args); return HotSpotGraalRuntime.getInstance().getCompilerToVM().executeCompiledMethodVarargs(args, nmethod); } @Override public long getStart() { return isValid() ? start : 0; } @Override public byte[] getCode() { return HotSpotGraalRuntime.getInstance().getCompilerToVM().getCode(nmethod); } @SuppressWarnings("unused") public static Object executeHelper(long nmethod, long metaspaceMethod, Object arg1, Object arg2, Object arg3) throws InvalidInstalledCodeException { return HotSpotGraalRuntime.getInstance().getCompilerToVM().executeCompiledMethod(arg1, arg2, arg3, nmethod); } }