Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/phases/GraphChangeMonitoringPhase.java @ 18945:7e08e0de79a9
Add utility phase to dump more information when another phase changes the graph
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Mon, 26 Jan 2015 09:28:20 -0800 |
parents | |
children | 7d805868d01d |
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/* * Copyright (c) 2015, 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.compiler.phases; import static com.oracle.graal.graph.Graph.NodeEvent.*; import java.util.stream.*; import com.oracle.graal.debug.*; import com.oracle.graal.debug.Debug.Scope; import com.oracle.graal.graph.Graph.NodeEventScope; import com.oracle.graal.nodes.*; import com.oracle.graal.phases.*; import com.oracle.graal.phases.common.util.*; import com.oracle.graal.phases.tiers.*; /** * A utility phase for detecting when a phase would change the graph and reporting extra information * about the effects. The phase is first run on a copy of the graph and if a change in that graph is * detected then it's rerun on the original graph inside a new debug scope under * GraphChangeMonitoringPhase. The message argument can be used to distinguish between the same * phase run at different points. * * @param <C> */ public class GraphChangeMonitoringPhase<C extends PhaseContext> extends PhaseSuite<C> { private final String message; public GraphChangeMonitoringPhase(String message, BasePhase<C> phase) { super(); this.message = message; appendPhase(phase); } public GraphChangeMonitoringPhase(String message) { super(); this.message = message; } @Override protected void run(StructuredGraph graph, C context) { HashSetNodeEventListener listener = new HashSetNodeEventListener().exclude(INPUT_CHANGED); try (NodeEventScope s = graph.trackNodeEvents(listener)) { StructuredGraph graphCopy = graph.copy(); try (Scope s2 = Debug.sandbox("WithoutMonitoring", null)) { super.run(graphCopy, context); } catch (Throwable t) { Debug.handle(t); } } if (!listener.getNodes().isEmpty()) { // rerun it on the real graph in a new Debug scope so Dump and Log can find it. listener = new HashSetNodeEventListener().exclude(INPUT_CHANGED); try (NodeEventScope s = graph.trackNodeEvents(listener)) { try (Scope s2 = Debug.scope("GraphChangeMonitoring." + getName() + "-" + message)) { if (Debug.isDumpEnabled(BasePhase.PHASE_DUMP_LEVEL)) { Debug.dump(BasePhase.PHASE_DUMP_LEVEL, graph, "*** Before phase %s", getName()); } super.run(graph, context); if (Debug.isDumpEnabled(BasePhase.PHASE_DUMP_LEVEL)) { Debug.dump(BasePhase.PHASE_DUMP_LEVEL, graph, "*** After phase %s", getName()); } } Debug.log("*** %s %s %s\n", message, graph, listener.getNodes().stream().filter(e -> !e.isAlive()).collect(Collectors.toSet())); } } else { // Go ahead and run it normally even though it should have no effect super.run(graph, context); } } }