Module openj9.dtfj

Package com.ibm.j9ddr.vm29.tools.ddrinteractive

Class ModularityHelper

java.lang.Object

com.ibm.j9ddr.vm29.tools.ddrinteractive.ModularityHelper

public class ModularityHelper
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	ModularityHelper.ClassIteratorFilter
static interface	ModularityHelper.ClassOutput
static interface	ModularityHelper.ModuleIteratorFilter
static interface	ModularityHelper.ModuleOutput
static interface	ModularityHelper.PackageIteratorFilter
static interface	ModularityHelper.PackageOutput

Constructor Summary

Constructors

Constructor	Description
ModularityHelper()

Method Summary

Modifier and Type	Method	Description
static int	iterateClassLoaderClasses(PrintStream out, ModularityHelper.ClassIteratorFilter filter, ModularityHelper.ClassOutput outputter, String filterArg, com.ibm.j9ddr.vm29.pointer.generated.J9ClassLoaderPointer classLoaderPtr)	Traverses through all loaded classes in a classloader.
static int	iterateClassLoaderPackages(PrintStream out, ModularityHelper.PackageIteratorFilter filter, ModularityHelper.PackageOutput outputter, String filterArg, com.ibm.j9ddr.vm29.pointer.generated.J9ClassLoaderPointer classLoaderPtr)	Traverses through all loaded packages that are owned by the given class loader.
static int	iterateModules(PrintStream out, ModularityHelper.ModuleIteratorFilter filter, ModularityHelper.ModuleOutput outputter, String filterArg)	Traverses through all loaded modules.
static int	iteratePackages(PrintStream out, ModularityHelper.PackageIteratorFilter filter, ModularityHelper.PackageOutput outputter, String filterArg)	Traverses through all loaded packages.
static boolean	moduleFilterMatchAll(com.ibm.j9ddr.vm29.pointer.generated.J9ModulePointer modulePtr, String arg)	Matches all modules.
static void	printJ9Class(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer classPtr, PrintStream out)	Prints the name and hex address of a J9Class.
static void	printJ9Module(com.ibm.j9ddr.vm29.pointer.generated.J9ModulePointer modulePtr, PrintStream out)	Prints the name and hex address of a J9Module.
static void	printJ9Package(com.ibm.j9ddr.vm29.pointer.generated.J9PackagePointer packagePtr, PrintStream out)	Prints the name and hex address of a J9Package.
static void	printPackageExports(com.ibm.j9ddr.vm29.pointer.generated.J9PackagePointer packagePtr, PrintStream out)	Prints the name and hex address of all J9Modules the provided package is exported to.
static void	printPackageExportVerbose(com.ibm.j9ddr.vm29.pointer.generated.J9PackagePointer packagePtr, PrintStream out)	Prints the name and hex address of all J9Modules the provided package is exported to.
static void	printPackageJ9Module(com.ibm.j9ddr.vm29.pointer.generated.J9PackagePointer packagePtr, PrintStream out)	Prints the details of the J9Module that owns a J9Package.

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ModularityHelper

public ModularityHelper()

Method Details

moduleFilterMatchAll

public static boolean moduleFilterMatchAll(com.ibm.j9ddr.vm29.pointer.generated.J9ModulePointer modulePtr,
 String arg)

Matches all modules. Fits the ModuleIteratorFilter functional interface.

Parameters:

modulePtr - unused

arg - unused

Returns:

true

printJ9Module

public static void printJ9Module(com.ibm.j9ddr.vm29.pointer.generated.J9ModulePointer modulePtr,
 PrintStream out)
                          throws CorruptDataException

Prints the name and hex address of a J9Module. Example: java.base !j9module 0x00007FAC2008EAC8

Parameters:

modulePtr - The module which is to have its details printed.

out - The PrintStream that the details will be outputted to.

Throws:

CorruptDataException

printPackageJ9Module

public static void printPackageJ9Module(com.ibm.j9ddr.vm29.pointer.generated.J9PackagePointer packagePtr,
 PrintStream out)
                                 throws CorruptDataException

Prints the details of the J9Module that owns a J9Package. Uses printJ9Module to output the module details.

Parameters:

packagePtr - The package which is to have its owner's details printed.

out - The PrintStream that the details will be outputted to.

Throws:

CorruptDataException

See Also:

• printJ9Module(com.ibm.j9ddr.vm29.pointer.generated.J9ModulePointer,java.io.PrintStream)

printJ9Package

public static void printJ9Package(com.ibm.j9ddr.vm29.pointer.generated.J9PackagePointer packagePtr,
 PrintStream out)
                           throws CorruptDataException

Prints the name and hex address of a J9Package. Example: moduleB/packageB !j9package 0x00007F84903B5860

Parameters:

packagePtr - The package which is to have its details printed.

out - The PrintStream that the details will be outputted to.

Throws:

CorruptDataException

printJ9Class

public static void printJ9Class(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer classPtr,
 PrintStream out)
                         throws CorruptDataException

Prints the name and hex address of a J9Class. Example: moduleA/packageA/classA !j9class 0x00000000022CCD00

Parameters:

ClassPtr - The class which is to have its details printed.

out - The PrintStream that the details will be outputted to.

Throws:

CorruptDataException

printPackageExportVerbose

public static void printPackageExportVerbose(com.ibm.j9ddr.vm29.pointer.generated.J9PackagePointer packagePtr,
 PrintStream out)
                                      throws CorruptDataException

Prints the name and hex address of all J9Modules the provided package is exported to. Output is formated similar to the format of module exports within a module-info.java file. Example: Exports moduleA/packageA !j9module 0x00000000022CCD00 to moduleB !j9module 0x00007FAC2008EAC8

Parameters:

packagePtr - The package which is to have the modules it is exported to printed.

out - The PrintStream that the result will be output to.

Throws:

CorruptDataException

printPackageExports

public static void printPackageExports(com.ibm.j9ddr.vm29.pointer.generated.J9PackagePointer packagePtr,
 PrintStream out)
                                throws CorruptDataException

Prints the name and hex address of all J9Modules the provided package is exported to. Example: moduleB !j9module 0x00007FAC2008EAC8

Parameters:

packagePtr - The package which is to have the modules it is exported to printed.

out - The PrintStream that the result will be output to.

Throws:

CorruptDataException

iterateModules

public static int iterateModules(PrintStream out,
 ModularityHelper.ModuleIteratorFilter filter,
 ModularityHelper.ModuleOutput outputter,
 String filterArg)
                          throws CorruptDataException

Traverses through all loaded modules. Uses outputter to print details about modules matched by filter.

Parameters:

out - The printstream that will be provided to outputter.

filter - Used to determine whether a module will be output. Will be run on all loaded modules.

outputter - Used to output details about a module that was matched by the filter. Will be run on any module that filter returns true for.

filterArg - A string that is to be used as additional data for filter. Will be passed to filter everytime filter is called.

Throws:

CorruptDataException

iteratePackages

public static int iteratePackages(PrintStream out,
 ModularityHelper.PackageIteratorFilter filter,
 ModularityHelper.PackageOutput outputter,
 String filterArg)
                           throws CorruptDataException

Traverses through all loaded packages. Uses outputter to print details about packages matched by filter.

Parameters:

out - The printstream that will be provided to outputter

filter - Used to determine whether a package will be output. Will be run on all loaded packages.

outputter - Used to output details about a package that was matched by the filter. Will be run on any module that filter returns true for.

filterArg - A string that is to be used as additional data for filter. Will be passed to filter everytime filter is called.

Throws:

CorruptDataException

iterateClassLoaderPackages

public static int iterateClassLoaderPackages(PrintStream out,
 ModularityHelper.PackageIteratorFilter filter,
 ModularityHelper.PackageOutput outputter,
 String filterArg,
 com.ibm.j9ddr.vm29.pointer.generated.J9ClassLoaderPointer classLoaderPtr)
                                      throws CorruptDataException

Traverses through all loaded packages that are owned by the given class loader. Uses outputter to print details about packages matched by filter.

Parameters:

out - The printstream that will be provided to outputter

filter - Used to determine whether a packages will be output. Will be run on all loaded packages owned by the class loader.

outputter - Used to output details about a packages that was matched by the filter. Will be run on any packages that filter returns true for.

filterArg - A string that is to be used as additional data for filter. Will be passed to filter everytime filter is called.

Throws:

CorruptDataException

iterateClassLoaderClasses

public static int iterateClassLoaderClasses(PrintStream out,
 ModularityHelper.ClassIteratorFilter filter,
 ModularityHelper.ClassOutput outputter,
 String filterArg,
 com.ibm.j9ddr.vm29.pointer.generated.J9ClassLoaderPointer classLoaderPtr)
                                     throws CorruptDataException

Traverses through all loaded classes in a classloader. Uses outputter to print details about classes within the classloader that are matched by filter.

Parameters:

out - The printstream that will be provided to outputter

filter - Used to determine whether a class will be output. Will be run on all loaded classes owned by the module.

outputter - Used to output details about a class that was matched by the filter. Will be run on any class that filter returns true for.

filterArg - A string that is to be used as additional data for filter. Will be passed to filter everytime filter is called.

classLoaderPtr - The classloader which will have it's classes traversed.

Throws:

CorruptDataException