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1 #
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2 # Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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3 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 #
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5 # This code is free software; you can redistribute it and/or modify it
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6 # under the terms of the GNU General Public License version 2 only, as
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7 # published by the Free Software Foundation.
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8 #
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9 # This code is distributed in the hope that it will be useful, but WITHOUT
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10 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 # version 2 for more details (a copy is included in the LICENSE file that
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13 # accompanied this code).
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14 #
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15 # You should have received a copy of the GNU General Public License version
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16 # 2 along with this work; if not, write to the Free Software Foundation,
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17 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 #
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19 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 # or visit www.oracle.com if you need additional information or have any
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21 # questions.
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22 #
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23 #
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24
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25 DESCRIPTION
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26
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27 This is replacement for CompileTheWorld (CTW) written on java. Its purpose is
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28 to make possible the use of CTW in product builds.
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29
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30 DEPENDENCES
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31
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32 The tool depends on Whitebox API. Assumed, that the sources of whitebox are
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33 located in '../whitebox' directory.
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34
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35 BUILDING
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36
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37 Simple way to build, just type 'make'.
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38
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39 Makefile uses environment variables 'ALT_BOOTDIR', 'BOOTDIR' as root-dir of jdk
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40 that will be used for compilation and creating jar.
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41
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42 On successful building 'ctw.jar' will be created.
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43
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44 RUNNING
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45
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46 Since the tool uses WhiteBox API, options 'UnlockDiagnosticVMOptions' and
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47 'WhiteBoxAPI' should be specified, and 'wb.jar' should be added to
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48 boot-classpath:
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49 $ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar
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50
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51 Arguments can be paths to '.jar, '.zip', '.lst' files or directories with
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52 classes, that define which classes will be compiled:
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53 - '.jar', '.zip' files and directories are interpreted like in classpath
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54 (including '<dir>/*' syntax)
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55 - '.lst' files -- files with class names (in java notation) to compile.
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56 CTW will try to find these classes with default class loader, so they should
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57 be located in classpath.
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58
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59 Without arguments it would work as old version of CTW: all classes in
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60 boot-classpath will be compiled, excluding classes in 'rt.jar' if 'rt.jar' isn't
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61 first in boot-classpath.
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62
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63 Due CTW's flags also are not available in product builds, the tool uses
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64 properties with the same names:
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65 - 'CompileTheWorldPreloadClasses' -- type:boolean, default:true, description:
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66 Preload all classes used by a class before start loading
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67 - 'CompileTheWorldStartAt' -- type:long, default:1, description: First class
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68 to consider
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69 - 'CompileTheWorldStopAt' -- type:long, default:Long.MAX_VALUE, description:
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70 Last class to consider
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71
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72 Also it uses additional properties:
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73 - 'sun.hotspot.tools.ctw.verbose' -- type:boolean, default:false,
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74 description: Verbose output, adds additional information about compilation
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75 - 'sun.hotspot.tools.ctw.logfile' -- type:string, default:null,
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76 description: Path to logfile, if it's null, cout will be used.
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77
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78 EXAMPLES
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79
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80 compile classes from 'rt.jar':
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81 $ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar ${JAVA_HOME}/jre/lib/rt.jar
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82
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83 compile classes from all '.jar' in './testjars' directory:
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84 $ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar ./testjars/*
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85
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86 compile classes from './build/classes' directory:
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87 $ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar ./build/classes
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88
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89 compile only java.lang.String, java.lang.Object classes:
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90 $ echo java.lang.String > classes.lst
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91 $ echo java.lang.Object >> classes.lst
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92 $ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar classes.lst
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93
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