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view graal/com.oracle.truffle.ruby.runtime/src/com/oracle/truffle/ruby/runtime/debug/RubyTraceProbe.java @ 13563:fb846424299f
Truffle/Ruby: extend Instrumentation framework with language-agnostic interfaces for access to AST printing utilities and a Ruby implementation
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Tue, 07 Jan 2014 18:09:42 -0800 |
parents | 0fbee3eb71f0 |
children | 1894412de0ed |
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/* * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved. This * code is released under a tri EPL/GPL/LGPL license. You can use it, * redistribute it and/or modify it under the terms of the: * * Eclipse Public License version 1.0 * GNU General Public License version 2 * GNU Lesser General Public License version 2.1 */ package com.oracle.truffle.ruby.runtime.debug; import com.oracle.truffle.api.*; import com.oracle.truffle.api.frame.*; import com.oracle.truffle.api.nodes.*; import com.oracle.truffle.ruby.runtime.*; import com.oracle.truffle.ruby.runtime.subsystems.*; /** * A "trace" probe that has no runtime cost until activated, at which time it invokes a trace * message. */ public final class RubyTraceProbe extends RubyProbe { private final Assumption notTracingAssumption; @CompilerDirectives.CompilationFinal private boolean tracingEverEnabled = false; public RubyTraceProbe(RubyContext context) { super(context); this.notTracingAssumption = context.getTraceManager().getNotTracingAssumption(); } @Override public void enter(Node astNode, VirtualFrame frame) { if (!tracingEverEnabled) { try { notTracingAssumption.check(); } catch (InvalidAssumptionException e) { tracingEverEnabled = true; } } final TraceManager traceManager = context.getTraceManager(); if (tracingEverEnabled && traceManager.hasTraceProc()) { final SourceSection sourceSection = astNode.getEncapsulatingSourceSection(); traceManager.trace("line", sourceSection.getSource().getName(), sourceSection.getStartLine(), 0, null, null); } } }