Mercurial > hg > graal-compiler
diff graal/com.oracle.truffle.ruby.runtime/src/com/oracle/truffle/ruby/runtime/debug/RubyTraceProbe.java @ 13514:0fbee3eb71f0
Ruby: import project.
author | Chris Seaton <chris.seaton@oracle.com> |
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date | Mon, 06 Jan 2014 17:12:09 +0000 |
parents | |
children | 1894412de0ed |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.truffle.ruby.runtime/src/com/oracle/truffle/ruby/runtime/debug/RubyTraceProbe.java Mon Jan 06 17:12:09 2014 +0000 @@ -0,0 +1,48 @@ +/* + * 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); + } + } +}