Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/BreakpointNode.java @ 15002:06e50d290784
isAllowedUsageType on Nodes
author | Lukas Stadler <lukas.stadler@oracle.com> |
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date | Mon, 07 Apr 2014 11:32:08 +0200 |
parents | d5a1206e1923 |
children | 882f4cb7cfcf |
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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.nodes; import com.oracle.graal.graph.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; /** * A node that results in a platform dependent breakpoint instruction being emitted. A number of * arguments can be associated with such a node for placing values of interest in the Java ABI * specified parameter locations corresponding to the kinds of the values. That is, the arguments * are set up as if the breakpoint instruction was a call to a compiled Java method. * <p> * A breakpoint is usually place by defining a node intrinsic method as follows: * * <pre> * {@literal @}NodeIntrinsic(BreakpointNode.class) * static void breakpoint(Object object, Word mark, Word value) { * throw new GraalInternalError(""); * } * </pre> * * Note that the signature is arbitrary. It's sole purpose is to capture values you may want to * inspect in the native debugger when the breakpoint is hit. */ public final class BreakpointNode extends FixedWithNextNode implements LIRLowerable { @Input private final NodeInputList<ValueNode> arguments; public BreakpointNode(ValueNode... arguments) { super(StampFactory.forVoid()); this.arguments = new NodeInputList<>(this, arguments); } @Override public void generate(NodeLIRBuilderTool gen) { gen.visitBreakpointNode(this); } public NodeInputList<ValueNode> arguments() { return arguments; } }