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view graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/impl/LineToProbesMap.java @ 18485:e3c95cbbb50c
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> |
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date | Sun, 23 Nov 2014 16:07:23 -0800 |
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/* * Copyright (c) 2014, 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. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * 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.truffle.api.instrument.impl; import java.io.*; import java.util.*; import com.oracle.truffle.api.instrument.*; import com.oracle.truffle.api.instrument.Probe.ProbeListener; import com.oracle.truffle.api.source.*; /** * A mapping from {@link LineLocation} (a line number in a specific piece of {@link Source} code) to * a collection of {@link Probe}s whose associated {@link SourceSection} starts on that line. */ public class LineToProbesMap implements ProbeListener { private static final boolean TRACE = false; private static final PrintStream OUT = System.out; private static void trace(String msg) { OUT.println("LineToProbesMap: " + msg); } /** * Map: Source line ==> probes associated with source sections starting on the line. */ private final Map<LineLocation, Collection<Probe>> lineToProbesMap = new HashMap<>(); public LineToProbesMap() { } public void startASTProbing(Source source) { } public void newProbeInserted(Probe probe) { final SourceSection sourceSection = probe.getProbedSourceSection(); if (sourceSection != null && !(sourceSection instanceof NullSourceSection)) { final LineLocation lineLocation = sourceSection.getLineLocation(); if (TRACE) { trace("ADD " + lineLocation.getShortDescription() + " ==> " + probe.getShortDescription()); } this.addProbeToLine(lineLocation, probe); } } public void probeTaggedAs(Probe probe, SyntaxTag tag, Object tagValue) { // This map ignores tags } public void endASTProbing(Source source) { } /** * Returns the {@link Probe}, if any, associated with source that starts on a specified line; if * there are more than one, return the one with the first starting character location. */ public Probe findLineProbe(LineLocation lineLocation) { Probe probe = null; final Collection<Probe> probes = getProbesAtLine(lineLocation); for (Probe probesOnLine : probes) { if (probe == null) { probe = probesOnLine; } else if (probesOnLine.getProbedSourceSection().getCharIndex() < probe.getProbedSourceSection().getCharIndex()) { probe = probesOnLine; } } return probe; } /** * Records creation of a probe whose associated source starts on the given line. * <p> * If the line already exists in the internal {@link #lineToProbesMap}, this probe will be added * to the existing collection. If no line already exists in the internal map, then a new key is * added along with a new collection containing the probe. * <p> * This class requires that each added line/probe pair hasn't been previously added. However, * attaching the same probe to a new line location is allowed. * * @param line The {@link LineLocation} to attach the probe to. * @param probe The {@link Probe} to attach for that line location. */ protected void addProbeToLine(LineLocation line, Probe probe) { if (!lineToProbesMap.containsKey(line)) { // Key does not exist, add new probe list final ArrayList<Probe> newProbeList = new ArrayList<>(2); newProbeList.add(probe); lineToProbesMap.put(line, newProbeList); } else { // Probe list exists, add to existing final Collection<Probe> existingProbeList = lineToProbesMap.get(line); assert !existingProbeList.contains(probe); existingProbeList.add(probe); } } /** * * Returns a collection of {@link Probe}s whose associated source begins at the given * {@link LineLocation}, an empty list if none. * * @param line The line to check. * @return A collection of probes at the given line. */ public Collection<Probe> getProbesAtLine(LineLocation line) { Collection<Probe> probesList = lineToProbesMap.get(line); if (probesList == null) { return Collections.emptyList(); } return probesList; } /** * Convenience method to get probes according to a int line number. Returns a collection of * {@link Probe}s at the given line number, an empty list if none. * * @param lineNumber The line number to check. * @return A collection of probes at the given line. */ public Collection<Probe> getProbesAtLineNumber(int lineNumber) { final Set<LineLocation> keySet = lineToProbesMap.keySet(); if (keySet.size() == 0) { return Collections.emptyList(); } ArrayList<Probe> probes = new ArrayList<>(); for (LineLocation line : keySet) { if (line.getLineNumber() == lineNumber) { probes.addAll(lineToProbesMap.get(line)); } } return probes; } public void forget(Source source) { final Set<LineLocation> mappedLines = lineToProbesMap.keySet(); if (mappedLines.size() > 0) { List<LineLocation> forgetLines = new ArrayList<>(); for (LineLocation line : mappedLines) { if (line.getSource().equals(source)) { forgetLines.add(line); } } for (LineLocation line : forgetLines) { lineToProbesMap.remove(line); } } } }