Mercurial > hg > graal-jvmci-8
diff graal/Compiler/src/com/sun/c1x/debug/CFGPrinterObserver.java @ 2507:9ec15d6914ca
Pull over of compiler from maxine repository.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 11:43:22 +0200 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/Compiler/src/com/sun/c1x/debug/CFGPrinterObserver.java Wed Apr 27 11:43:22 2011 +0200 @@ -0,0 +1,113 @@ +/* + * 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.sun.c1x.debug; + +import java.io.*; + +import com.sun.c1x.*; +import com.sun.c1x.observer.*; +import com.sun.cri.ri.*; + +/** + * Observes compilation events and uses {@link CFGPrinter} to produce a control flow graph for the <a + * href="https://c1visualizer.dev.java.net/">C1 Visualizer</a>. + * + * @author Peter Hofer + */ +public class CFGPrinterObserver implements CompilationObserver { + + private C1XCompilation currentCompilation; + private CFGPrinter cfgPrinter; + private ByteArrayOutputStream buffer = null; + + public CFGPrinterObserver() { + } + + @Override + public void compilationStarted(CompilationEvent event) { + // Supports only one compilation at the same time + assert currentCompilation == null; + + currentCompilation = event.getCompilation(); + if (buffer == null) { + buffer = new ByteArrayOutputStream(); + } + cfgPrinter = new CFGPrinter(buffer, currentCompilation.target); + cfgPrinter.printCompilation(currentCompilation.method); + } + + @Override + public void compilationEvent(CompilationEvent event) { + assert currentCompilation == event.getCompilation(); + + String label = event.getLabel(); + + if (event.getAllocator() != null && event.getIntervals() != null) { + cfgPrinter.printIntervals(event.getAllocator(), event.getIntervals(), label); + } + + boolean cfgprinted = false; + + if (event.getBlockMap() != null && event.getCodeSize() >= 0) { + cfgPrinter.printCFG(event.getMethod(), event.getBlockMap(), event.getCodeSize(), label, event.isHIRValid(), event.isLIRValid()); + cfgprinted = true; + } + + if (event.getStartBlock() != null) { + cfgPrinter.printCFG(event.getStartBlock(), label, event.isHIRValid(), event.isLIRValid()); + cfgprinted = true; + } + + if (event.getTargetMethod() != null) { + if (cfgprinted) { + // Avoid duplicate "cfg" section + label = null; + } + + RiRuntime runtime = event.getCompilation().runtime; + cfgPrinter.printMachineCode(runtime.disassemble(event.getTargetMethod()), label); + } + } + + @Override + public void compilationFinished(CompilationEvent event) { + assert currentCompilation == event.getCompilation(); + + cfgPrinter.flush(); + + OutputStream cfgFileStream = CFGPrinter.cfgFileStream(); + if (cfgFileStream != null) { + synchronized (cfgFileStream) { + try { + cfgFileStream.write(buffer.toByteArray()); + } catch (IOException e) { + TTY.println("WARNING: Error writing CFGPrinter output for %s to disk: %s", event.getMethod(), e); + } + } + } + + buffer.reset(); + cfgPrinter = null; + currentCompilation = null; + } +}