de.ibapl.jnhw.libloader

Class NativeLibResolver

java.lang.Object

de.ibapl.jnhw.libloader.NativeLibResolver

public abstract class NativeLibResolver
extends Object

This class resolves a native lib. The resoler expects a native lib with a name generated by libtool. The resolver scans first the java.library.path for the lib. If the lib is not found it will be searched in the resources of the Consumers class. The search directoy is /lib/. If its found it will be copied to the temp dir and can be loaded with the class loader that actually needs the lib. This makes sure that OSGi can find, load and use the native lib, because each bundle has its own classloder. So a lib loded from this bundle cant be used in the Consumers bundle. This is needed because System.load(absoluteLibName) uses refecti9ons to find the correct classloder which is the one that System.load is called.

Author:

aploese

Field Summary

Fields

Modifier and Type	Field and Description
protected static Logger	LOG
protected static Set<MultiarchInfo>	MULTIARCH_INFO
protected static MultiarchTupelBuilder	MULTIARCH_TUPEL_BUILDER
protected static File	NATIVE_TEMP_DIR
protected static OS	RUNNING_ON_OS

Method Summary

Modifier and Type	Method and Description
static OS	getOS()
static LoadResult	loadClassicalNativeLib(String libName, Consumer<String> consumer)
static LoadResult	loadNativeLib(String libName, int libToolInterfaceVersion, Consumer<String> consumer) Only call System.load(absLibName); in the subclass - so OSGi can pick the right classloader...

Methods inherited from class java.lang.Object

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

Field Detail

LOG

protected static final Logger LOG

MULTIARCH_TUPEL_BUILDER

protected static final MultiarchTupelBuilder MULTIARCH_TUPEL_BUILDER

MULTIARCH_INFO

protected static final Set<MultiarchInfo> MULTIARCH_INFO

RUNNING_ON_OS

protected static final OS RUNNING_ON_OS

NATIVE_TEMP_DIR

protected static final File NATIVE_TEMP_DIR

Method Detail

loadNativeLib

public static LoadResult loadNativeLib(String libName,
                                       int libToolInterfaceVersion,
                                       Consumer<String> consumer)

Only call System.load(absLibName); in the subclass - so OSGi can pick the right classloader...

Parameters:

libName - the name of the lib without any pre or posfix. @see OS for the naming templates.

libToolInterfaceVersion - the libtool version.

consumer - the consumer which really load the lib.

Returns:

the result of this attempt to load the native lib.

loadClassicalNativeLib

public static LoadResult loadClassicalNativeLib(String libName,
                                                Consumer<String> consumer)

getOS

public static OS getOS()