Mercurial > jdk8-mips64-public > hotspot / file revision

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 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