Mercurial > hg > truffle
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/stubs/Stub.java @ 9015:92d2bedb5dfc
Change of Snippet template and instantiation process
author | Christian Wimmer <christian.wimmer@oracle.com> |
---|---|
date | Thu, 11 Apr 2013 14:22:03 -0700 |
parents | ce5750014c3d |
children | 9be78aeab2e1 |
line wrap: on
line source
/* * Copyright (c) 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. * * 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.stubs; import java.util.concurrent.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.compiler.*; import com.oracle.graal.compiler.target.*; import com.oracle.graal.debug.*; import com.oracle.graal.hotspot.*; import com.oracle.graal.hotspot.meta.*; import com.oracle.graal.java.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.phases.*; import com.oracle.graal.phases.PhasePlan.PhasePosition; import com.oracle.graal.replacements.*; import com.oracle.graal.replacements.Snippet.ConstantParameter; import com.oracle.graal.replacements.SnippetTemplate.AbstractTemplates; import com.oracle.graal.replacements.SnippetTemplate.Arguments; import com.oracle.graal.replacements.SnippetTemplate.SnippetInfo; /** * Base class for implementing some low level code providing the out-of-line slow path for a * snippet. A concrete stub is defined a subclass of this class. * <p> * Implementation detail: The stub classes re-use some of the functionality for {@link Snippet}s * purely for convenience (e.g., can re-use the {@link ReplacementsImpl}). */ public abstract class Stub extends AbstractTemplates implements Snippets { /** * The method implementing the stub. */ protected final SnippetInfo stubInfo; /** * The linkage information for the stub. */ protected final HotSpotRuntimeCallTarget linkage; /** * The code installed for the stub. */ protected InstalledCode stubCode; /** * Creates a new stub container. The new stub still needs to be * {@linkplain #getAddress(Backend) installed}. * * @param linkage linkage details for a call to the stub */ public Stub(HotSpotRuntime runtime, Replacements replacements, TargetDescription target, HotSpotRuntimeCallTarget linkage, String methodName) { super(runtime, replacements, target); this.stubInfo = snippet(getClass(), methodName); this.linkage = linkage; } /** * Adds the {@linkplain ConstantParameter constant} arguments of this stub. */ protected abstract Arguments makeArguments(SnippetInfo stub); protected HotSpotRuntime runtime() { return (HotSpotRuntime) runtime; } /** * Gets the method implementing this stub. */ public ResolvedJavaMethod getMethod() { return stubInfo.getMethod(); } public HotSpotRuntimeCallTarget getLinkage() { return linkage; } /** * Ensures the code for this stub is installed. * * @return the entry point address for calls to this stub */ public synchronized long getAddress(Backend backend) { if (stubCode == null) { Arguments args = makeArguments(stubInfo); SnippetTemplate template = template(args); StructuredGraph graph = template.copySpecializedGraph(); PhasePlan phasePlan = new PhasePlan(); GraphBuilderPhase graphBuilderPhase = new GraphBuilderPhase(runtime, GraphBuilderConfiguration.getDefault(), OptimisticOptimizations.ALL); phasePlan.addPhase(PhasePosition.AFTER_PARSING, graphBuilderPhase); final CompilationResult compResult = GraalCompiler.compileMethod(runtime(), replacements, backend, runtime().getTarget(), getMethod(), graph, null, phasePlan, OptimisticOptimizations.ALL, new SpeculationLog()); stubCode = Debug.scope("CodeInstall", new Object[]{runtime(), getMethod()}, new Callable<InstalledCode>() { @Override public InstalledCode call() { InstalledCode installedCode = runtime().addMethod(getMethod(), compResult); assert installedCode != null : "error installing stub " + getMethod(); if (Debug.isDumpEnabled()) { Debug.dump(new Object[]{compResult, installedCode}, "After code installation"); } return installedCode; } }); assert stubCode != null : "error installing stub " + getMethod(); } return stubCode.getStart(); } }