Mercurial > hg > truffle
view graal/com.oracle.graal.phases/src/com/oracle/graal/phases/verify/VerifyDebugUsage.java @ 21554:b1530a6cce8c
renamed com.oracle.graal.[debug|options|hotspotvmconfig]* modules to com.oracle.jvmci.[debug|options|hotspotvmconfig]* modules (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 26 May 2015 23:21:15 +0200 |
parents | 61d3cb8e1280 |
children | 48c1ebd24120 |
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/* * Copyright (c) 2013, 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.phases.verify; import com.oracle.graal.api.meta.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.java.*; import com.oracle.graal.phases.*; import com.oracle.graal.phases.tiers.*; import com.oracle.jvmci.debug.*; /** * Verifies that no argument to one of the {@link Debug#log(String)} methods is the result of * {@link StringBuilder#toString()} or {@link StringBuffer#toString()}. Instead, one of the * multi-parameter {@code log()} methods should be used. The goal is to minimize/prevent allocation * at logging call sites. */ public class VerifyDebugUsage extends VerifyPhase<PhaseContext> { @Override protected boolean verify(StructuredGraph graph, PhaseContext context) { for (MethodCallTargetNode t : graph.getNodes(MethodCallTargetNode.TYPE)) { ResolvedJavaMethod callee = t.targetMethod(); ResolvedJavaType debugType = context.getMetaAccess().lookupJavaType(Debug.class); if (callee.getDeclaringClass().equals(debugType)) { if (callee.getName().equals("log")) { int argIdx = 1; for (ValueNode arg : t.arguments()) { if (arg instanceof Invoke) { Invoke invoke = (Invoke) arg; CallTargetNode callTarget = invoke.callTarget(); if (callTarget instanceof MethodCallTargetNode) { ResolvedJavaMethod m = ((MethodCallTargetNode) callTarget).targetMethod(); if (m.getName().equals("toString")) { String holder = m.getDeclaringClass().getName(); if (holder.equals("Ljava/lang/StringBuilder;") || holder.equals("Ljava/lang/StringBuffer;")) { StackTraceElement e = graph.method().asStackTraceElement(invoke.bci()); throw new VerificationError(String.format("%s: parameter %d of call to %s appears to be a String concatenation expression.%n" + " Use one of the multi-parameter Debug.log() methods or Debug.logv() instead.", e, argIdx, callee.format("%H.%n(%p)"))); } } } } argIdx++; } } } } return true; } }