Nested and Inner Type Summary

Modifier and Type	Class and Description
private static class	NativeLibraryLoader.NoexecVolumeDetector

Field Summary

Modifier and Type	Field and Description
private static final boolean	DELETE_NATIVE_LIB_AFTER_LOADING
private static final boolean	DETECT_NATIVE_LIBRARY_DUPLICATES
private static final InternalLogger	logger
private static final String	NATIVE_RESOURCE_HOME
private static final boolean	TRY_TO_PATCH_SHADED_ID
private static final byte[]	UNIQUE_ID_BYTES
private static final File	WORKDIR

Constructor Summary

Access	Constructor and Description
private	NativeLibraryLoader()

Method Summary

Modifier and Type	Method and Description
private static String	calculateMangledPackagePrefix() Calculates the mangled shading prefix added to this class's full name.
private static byte[]	Returns: The binary content of helper `Class`. classToByteArray(Class<?> - The helper `Class` provided by this bundle clazz) Load the helper `Class` as a byte array, to be redefined in specified `ClassLoader`.
private static void	closeQuietly(Closeable c)
private static byte[]	digest(MessageDigest digest, URL url)
private static byte[]	generateUniqueId(int length)
private static URL	getResource(String path, ClassLoader loader)
public static void	load(String originalName, ClassLoader loader) Load the given library with the specified `ClassLoader`
public static void	loadFirstAvailable(ClassLoader loader, String... names) Loads the first available library in the collection with the specified `ClassLoader`.
private static void	loadLibrary(final ClassLoader - The `ClassLoader` where the native library will be loaded into loader, final String - The native library path or name name, final boolean - Whether the native library will be loaded by path or by name absolute) Loading the native library into the specified `ClassLoader`.
private static void	loadLibraryByHelper(final Class<?> helper, final String name, final boolean absolute)
private static void	rethrowWithMoreDetailsIfPossible(String name, NoSuchMethodError error)
private static boolean	shouldShadedLibraryIdBePatched(String packagePrefix)
private static boolean	tryExec(String cmd)
pack-priv static void	tryPatchShadedLibraryIdAndSign(File libraryFile, String originalName)
private static Class<?>	Returns: A new helper Class defined in the specified ClassLoader. tryToLoadClass(final ClassLoader - The `ClassLoader` where to load the helper `Class` loader, final Class<?> - The helper `Class` helper) Try to load the helper `Class` into specified `ClassLoader`.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

DELETE_NATIVE_LIB_AFTER_LOADING	back to summary
private static final boolean DELETE_NATIVE_LIB_AFTER_LOADING

DETECT_NATIVE_LIBRARY_DUPLICATES	back to summary
private static final boolean DETECT_NATIVE_LIBRARY_DUPLICATES

logger	back to summary
private static final InternalLogger logger

NATIVE_RESOURCE_HOME	back to summary
private static final String NATIVE_RESOURCE_HOME

TRY_TO_PATCH_SHADED_ID	back to summary
private static final boolean TRY_TO_PATCH_SHADED_ID

UNIQUE_ID_BYTES	back to summary
private static final byte[] UNIQUE_ID_BYTES

WORKDIR	back to summary
private static final File WORKDIR

Constructor Detail

NativeLibraryLoader	back to summary
private NativeLibraryLoader()

Method Detail

calculateMangledPackagePrefix back to summary

calculateMangledPackagePrefix	back to summary
private static String calculateMangledPackagePrefix() Calculates the mangled shading prefix added to this class's full name. This method mangles the package name as follows, so we can unmangle it back later: `_` to `_1` `.` to `_` Note that we don't mangle non-ASCII characters here because it's extremely unlikely to have a non-ASCII character in a package name. For more information, see: JNI specification `parsePackagePrefix()` in `netty_jni_util.c`. Exceptions UnsatisfiedLinkError: if the shader used something other than a prefix

private static String calculateMangledPackagePrefix()

Calculates the mangled shading prefix added to this class's full name.

This method mangles the package name as follows, so we can unmangle it back later:

_ to _1
. to _

Note that we don't mangle non-ASCII characters here because it's extremely unlikely to have a non-ASCII character in a package name. For more information, see:

JNI specification
parsePackagePrefix() in netty_jni_util.c.

Exceptions

UnsatisfiedLinkError:: if the shader used something other than a prefix

classToByteArray back to summary

classToByteArray	back to summary
private static byte[] classToByteArray(Class<?> clazz) throws ClassNotFoundException Load the helper `Class` as a byte array, to be redefined in specified `ClassLoader`. Parameters clazz:Class<?> - The helper `Class` provided by this bundle Returns:byte[] The binary content of helper `Class`. Exceptions ClassNotFoundException: Helper class not found or loading failed

private static byte[] classToByteArray(Class<?> clazz) throws ClassNotFoundException

Load the helper Class as a byte array, to be redefined in specified ClassLoader.

Parameters

clazz:Class<?>: - The helper Class provided by this bundle

Returns:byte[]

The binary content of helper Class.

Exceptions

ClassNotFoundException:: Helper class not found or loading failed

closeQuietly	back to summary
private static void closeQuietly(Closeable c)

digest	back to summary
private static byte[] digest(MessageDigest digest, URL url)

generateUniqueId	back to summary
private static byte[] generateUniqueId(int length)

getResource	back to summary
private static URL getResource(String path, ClassLoader loader)

load	back to summary
public static void load(String originalName, ClassLoader loader) Load the given library with the specified `ClassLoader`

loadFirstAvailable back to summary

loadFirstAvailable	back to summary
public static void loadFirstAvailable(ClassLoader loader, String... names) Loads the first available library in the collection with the specified `ClassLoader`. Exceptions IllegalArgumentException: if none of the given libraries load successfully.

public static void loadFirstAvailable(ClassLoader loader, String... names)

Loads the first available library in the collection with the specified ClassLoader.

Exceptions

IllegalArgumentException:: if none of the given libraries load successfully.

loadLibrary back to summary

loadLibrary	back to summary
private static void loadLibrary(final ClassLoader loader, final String name, final boolean absolute) Loading the native library into the specified `ClassLoader`. Parameters loader:ClassLoader - The `ClassLoader` where the native library will be loaded into name:String - The native library path or name absolute:boolean - Whether the native library will be loaded by path or by name

private static void loadLibrary(final ClassLoader loader, final String name, final boolean absolute)

Loading the native library into the specified ClassLoader.

Parameters

loader:ClassLoader: - The ClassLoader where the native library will be loaded into
name:String: - The native library path or name
absolute:boolean: - Whether the native library will be loaded by path or by name

loadLibraryByHelper	back to summary
private static void loadLibraryByHelper(final Class<?> helper, final String name, final boolean absolute) throws UnsatisfiedLinkError

rethrowWithMoreDetailsIfPossible	back to summary
private static void rethrowWithMoreDetailsIfPossible(String name, NoSuchMethodError error) Annotations @SuppressJava6Requirement reason:Guarded by version check

shouldShadedLibraryIdBePatched	back to summary
private static boolean shouldShadedLibraryIdBePatched(String packagePrefix)

tryExec	back to summary
private static boolean tryExec(String cmd)

tryPatchShadedLibraryIdAndSign	back to summary
pack-priv static void tryPatchShadedLibraryIdAndSign(File libraryFile, String originalName)

tryToLoadClass back to summary

tryToLoadClass	back to summary
private static Class<?> tryToLoadClass(final ClassLoader loader, final Class<?> helper) throws ClassNotFoundException Try to load the helper `Class` into specified `ClassLoader`. Parameters loader:ClassLoader - The `ClassLoader` where to load the helper `Class` helper:Class<?> - The helper `Class` Returns:Class<?> A new helper Class defined in the specified ClassLoader. Exceptions ClassNotFoundException: Helper class not found or loading failed

private static Class<?> tryToLoadClass(final ClassLoader loader, final Class<?> helper) throws ClassNotFoundException

Try to load the helper Class into specified ClassLoader.

Parameters

loader:ClassLoader: - The ClassLoader where to load the helper Class
helper:Class<?>: - The helper Class

Returns:Class<?>

A new helper Class defined in the specified ClassLoader.

Exceptions

ClassNotFoundException:: Helper class not found or loading failed

io.netty.util.internal back to summary

private final Class NativeLibraryLoader.NoexecVolumeDetector

Class Inheritance

extends Object

java.lang.Object
io.netty.util.internal.NativeLibraryLoader.NoexecVolumeDetector

Constructor Summary

Access	Constructor and Description
private	NoexecVolumeDetector()

Method Summary

Modifier and Type	Method and Description
private static boolean	canExecuteExecutable(File file)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Constructor Detail

NoexecVolumeDetector	back to summary
private NoexecVolumeDetector()

Method Detail

canExecuteExecutable	back to summary
private static boolean canExecuteExecutable(File file) throws IOException Annotations @SuppressJava6Requirement reason:Usage guarded by java version check

public final Class NativeLibraryLoader

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

private final Class NativeLibraryLoader.NoexecVolumeDetector

Constructor Summary

Method Summary

Constructor Detail

Method Detail