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view test/testlibrary/ctw/README @ 21042:38b39b75500c
Mention u40 merge in changelog
author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
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date | Mon, 20 Apr 2015 14:40:48 +0200 |
parents | ceda33ff54a3 |
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# # Copyright (c) 2013, 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. # # DESCRIPTION This is replacement for CompileTheWorld (CTW) written on java. Its purpose is to make possible the use of CTW in product builds. DEPENDENCES The tool depends on Whitebox API. Assumed, that the sources of whitebox are located in '../whitebox' directory. BUILDING Simple way to build, just type 'make'. Makefile uses environment variables 'ALT_BOOTDIR', 'BOOTDIR' as root-dir of jdk that will be used for compilation and creating jar. On successful building 'ctw.jar' will be created. RUNNING Since the tool uses WhiteBox API, options 'UnlockDiagnosticVMOptions' and 'WhiteBoxAPI' should be specified, and 'wb.jar' should be added to boot-classpath: $ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar Arguments can be paths to '.jar, '.zip', '.lst' files or directories with classes, that define which classes will be compiled: - '.jar', '.zip' files and directories are interpreted like in classpath (including '<dir>/*' syntax) - '.lst' files -- files with class names (in java notation) to compile. CTW will try to find these classes with default class loader, so they should be located in classpath. Without arguments it would work as old version of CTW: all classes in boot-classpath will be compiled, excluding classes in 'rt.jar' if 'rt.jar' isn't first in boot-classpath. Due CTW's flags also are not available in product builds, the tool uses properties with the same names: - 'CompileTheWorldPreloadClasses' -- type:boolean, default:true, description: Preload all classes used by a class before start loading - 'CompileTheWorldStartAt' -- type:long, default:1, description: First class to consider - 'CompileTheWorldStopAt' -- type:long, default:Long.MAX_VALUE, description: Last class to consider Also it uses additional properties: - 'sun.hotspot.tools.ctw.verbose' -- type:boolean, default:false, description: Verbose output, adds additional information about compilation - 'sun.hotspot.tools.ctw.logfile' -- type:string, default:null, description: Path to logfile, if it's null, cout will be used. EXAMPLES compile classes from 'rt.jar': $ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar ${JAVA_HOME}/jre/lib/rt.jar compile classes from all '.jar' in './testjars' directory: $ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar ./testjars/* compile classes from './build/classes' directory: $ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar ./build/classes compile only java.lang.String, java.lang.Object classes: $ echo java.lang.String > classes.lst $ echo java.lang.Object >> classes.lst $ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar classes.lst