94 lines
3.7 KiB
Plaintext
94 lines
3.7 KiB
Plaintext
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Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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This code is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License version 2 only, as
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published by the Free Software Foundation.
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This code is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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version 2 for more details (a copy is included in the LICENSE file that
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accompanied this code).
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You should have received a copy of the GNU General Public License version
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2 along with this work; if not, write to the Free Software Foundation,
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Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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or visit www.oracle.com if you need additional information or have any
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questions.
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DESCRIPTION
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This is replacement for CompileTheWorld (CTW) written on java. Its purpose is
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to make possible the use of CTW in product builds.
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DEPENDENCES
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The tool depends on Whitebox API. Assumed, that the sources of whitebox are
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located in '../whitebox' directory.
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BUILDING
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Simple way to build, just type 'make'.
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Makefile uses environment variables 'ALT_BOOTDIR', 'BOOTDIR' as root-dir of jdk
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that will be used for compilation and creating jar.
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On successful building 'ctw.jar' will be created.
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RUNNING
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Since the tool uses WhiteBox API, options 'UnlockDiagnosticVMOptions' and
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'WhiteBoxAPI' should be specified, and 'wb.jar' should be added to
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boot-classpath:
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$ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar
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Arguments can be paths to '.jar, '.zip', '.lst' files or directories with
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classes, that define which classes will be compiled:
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- '.jar', '.zip' files and directories are interpreted like in classpath
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(including '<dir>/*' syntax)
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- '.lst' files -- files with class names (in java notation) to compile.
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CTW will try to find these classes with default class loader, so they should
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be located in classpath.
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Without arguments it would work as old version of CTW: all classes in
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boot-classpath will be compiled, excluding classes in 'rt.jar' if 'rt.jar' isn't
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first in boot-classpath.
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Due CTW's flags also are not available in product builds, the tool uses
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properties with the same names:
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- 'CompileTheWorldPreloadClasses' -- type:boolean, default:true, description:
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Preload all classes used by a class before start loading
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- 'CompileTheWorldStartAt' -- type:long, default:1, description: First class
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to consider
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- 'CompileTheWorldStopAt' -- type:long, default:Long.MAX_VALUE, description:
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Last class to consider
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Also it uses additional properties:
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- 'sun.hotspot.tools.ctw.verbose' -- type:boolean, default:false,
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description: Verbose output, adds additional information about compilation
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- 'sun.hotspot.tools.ctw.logfile' -- type:string, default:null,
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description: Path to logfile, if it's null, cout will be used.
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EXAMPLES
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compile classes from 'rt.jar':
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$ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar ${JAVA_HOME}/jre/lib/rt.jar
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compile classes from all '.jar' in './testjars' directory:
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$ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar ./testjars/*
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compile classes from './build/classes' directory:
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$ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar ./build/classes
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compile only java.lang.String, java.lang.Object classes:
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$ echo java.lang.String > classes.lst
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$ echo java.lang.Object >> classes.lst
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$ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar classes.lst
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