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comparison graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/instrument/SLStatementWrapperNode.java @ 18485:e3c95cbbb50c

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Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
author Michael Van De Vanter <michael.van.de.vanter@oracle.com>
date Sun, 23 Nov 2014 16:07:23 -0800
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children d1c1cd2530d7
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18484:e97e1f07a3d6 18485:e3c95cbbb50c
1 /*
2 * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23 package com.oracle.truffle.sl.nodes.instrument;
24
25 import com.oracle.truffle.api.frame.*;
26 import com.oracle.truffle.api.instrument.*;
27 import com.oracle.truffle.api.instrument.ProbeNode.WrapperNode;
28 import com.oracle.truffle.api.nodes.*;
29 import com.oracle.truffle.sl.nodes.*;
30
31 /**
32 * A Truffle node that can be inserted into a Simple AST (assumed not to have executed yet) to
33 * enable "instrumentation" of a {@link SLStatementNode}. Tools wishing to interact with AST
34 * execution may attach {@link Instrument}s to the {@link Probe} uniquely associated with the
35 * wrapper, and to which this wrapper routes execution events.
36 */
37 @NodeInfo(cost = NodeCost.NONE)
38 public final class SLStatementWrapperNode extends SLStatementNode implements WrapperNode {
39
40 @Child private SLStatementNode child;
41 @Child private ProbeNode probeNode;
42
43 public SLStatementWrapperNode(SLStatementNode child) {
44 super(child.getSourceSection());
45 assert !(child instanceof SLStatementWrapperNode);
46 this.child = child;
47 }
48
49 public String instrumentationInfo() {
50 return "Wrapper node for SL Statements";
51 }
52
53 @Override
54 public SLStatementNode getNonWrapperNode() {
55 return child;
56 }
57
58 public void insertProbe(ProbeNode newProbeNode) {
59 this.probeNode = newProbeNode;
60 }
61
62 public Probe getProbe() {
63 try {
64 return probeNode.getProbe();
65 } catch (IllegalStateException e) {
66 throw new IllegalStateException("A lite-Probed wrapper has no explicit Probe");
67 }
68 }
69
70 @Override
71 public Node getChild() {
72 return child;
73 }
74
75 @Override
76 public void executeVoid(VirtualFrame frame) {
77 probeNode.enter(child, frame);
78
79 try {
80 child.executeVoid(frame);
81 probeNode.returnVoid(child, frame);
82 } catch (KillException e) {
83 throw (e);
84 } catch (Exception e) {
85 probeNode.returnExceptional(child, frame, e);
86 throw (e);
87 }
88 }
89
90 @Override
91 public Probe probe() {
92 throw new IllegalStateException("Cannot call probe() on a wrapper.");
93 }
94
95 @Override
96 public void probeLite(TruffleEventReceiver eventReceiver) {
97 throw new IllegalStateException("Cannot call probeLite() on a wrapper.");
98 }
99 }