Library (Apache Tomcat 8.5.56 API Documentation)

org.apache.tomcat.jni

## Class Library

- java.lang.Object
- - org.apache.tomcat.jni.Library

-     public final class Library
      extends Object

  Library
  Author:
    Mladen Turk

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static boolean` | `APR_CHARSET_EBCDIC`
    `static boolean` | `APR_FILES_AS_SOCKETS`
    `static boolean` | `APR_HAS_DSO`
    `static boolean` | `APR_HAS_FORK`
    `static boolean` | `APR_HAS_LARGE_FILES`
    `static boolean` | `APR_HAS_MMAP`
    `static boolean` | `APR_HAS_OS_UUID`
    `static boolean` | `APR_HAS_OTHER_CHILD`
    `static boolean` | `APR_HAS_PROC_INVOKED`
    `static boolean` | `APR_HAS_RANDOM`
    `static boolean` | `APR_HAS_SENDFILE`
    `static boolean` | `APR_HAS_SHARED_MEMORY`
    `static boolean` | `APR_HAS_SO_ACCEPTFILTER`
    `static boolean` | `APR_HAS_THREADS`
    `static boolean` | `APR_HAS_UNICODE_FS`
    `static boolean` | `APR_HAS_USER`
    `static boolean` | `APR_HAS_XTHREAD_FILES`
    `static boolean` | `APR_HAVE_IPV6`
    `static boolean` | `APR_IS_BIGENDIAN`
    `static int` | `APR_IS_DEV_VERSION`
    `static int` | `APR_MAJOR_VERSION`
    `static int` | `APR_MAX_IOVEC_SIZE`
    `static int` | `APR_MAX_SECS_TO_LINGER`
    `static int` | `APR_MINOR_VERSION`
    `static int` | `APR_MMAP_LIMIT`
    `static int` | `APR_MMAP_THRESHOLD`
    `static boolean` | `APR_O_NONBLOCK_INHERITED`
    `static int` | `APR_PATCH_VERSION`
    `static int` | `APR_PATH_MAX`
    `static int` | `APR_SIZEOF_VOIDP`
    `static boolean` | `APR_TCP_NODELAY_INHERITED`
    `static int` | `APRMAXHOSTLEN`
    `static int` | `TCN_IS_DEV_VERSION`
    `static int` | `TCN_MAJOR_VERSION`
    `static int` | `TCN_MINOR_VERSION`
    `static int` | `TCN_PATCH_VERSION`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `static String` | `aprVersionString()`
    `static long` | `globalPool()`
    `static boolean` | `initialize(String libraryName)` Setup any APR internal data structures.
    `static void` | `load(String filename)` Calls System.load(filename).
    `static void` | `loadLibrary(String libname)` Calls System.loadLibrary(libname).
    `static void` | `terminate()`
    `static String` | `versionString()`

    - ### Methods inherited from class java.lang.Object

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

- - ### Field Detail

    - #### TCN_MAJOR_VERSION

          public static int TCN_MAJOR_VERSION

    - #### TCN_MINOR_VERSION

          public static int TCN_MINOR_VERSION

    - #### TCN_PATCH_VERSION

          public static int TCN_PATCH_VERSION

    - #### TCN_IS_DEV_VERSION

          public static int TCN_IS_DEV_VERSION

    - #### APR_MAJOR_VERSION

          public static int APR_MAJOR_VERSION

    - #### APR_MINOR_VERSION

          public static int APR_MINOR_VERSION

    - #### APR_PATCH_VERSION

          public static int APR_PATCH_VERSION

    - #### APR_IS_DEV_VERSION

          public static int APR_IS_DEV_VERSION

    - #### APR_HAVE_IPV6

          public static boolean APR_HAVE_IPV6

    - #### APR_HAS_SHARED_MEMORY

          public static boolean APR_HAS_SHARED_MEMORY

    - #### APR_HAS_THREADS

          public static boolean APR_HAS_THREADS

    - #### APR_HAS_SENDFILE

          public static boolean APR_HAS_SENDFILE

    - #### APR_HAS_MMAP

          public static boolean APR_HAS_MMAP

    - #### APR_HAS_FORK

          public static boolean APR_HAS_FORK

    - #### APR_HAS_RANDOM

          public static boolean APR_HAS_RANDOM

    - #### APR_HAS_OTHER_CHILD

          public static boolean APR_HAS_OTHER_CHILD

    - #### APR_HAS_DSO

          public static boolean APR_HAS_DSO

    - #### APR_HAS_SO_ACCEPTFILTER

          public static boolean APR_HAS_SO_ACCEPTFILTER

    - #### APR_HAS_UNICODE_FS

          public static boolean APR_HAS_UNICODE_FS

    - #### APR_HAS_PROC_INVOKED

          public static boolean APR_HAS_PROC_INVOKED

    - #### APR_HAS_USER

          public static boolean APR_HAS_USER

    - #### APR_HAS_LARGE_FILES

          public static boolean APR_HAS_LARGE_FILES

    - #### APR_HAS_XTHREAD_FILES

          public static boolean APR_HAS_XTHREAD_FILES

    - #### APR_HAS_OS_UUID

          public static boolean APR_HAS_OS_UUID

    - #### APR_IS_BIGENDIAN

          public static boolean APR_IS_BIGENDIAN

    - #### APR_FILES_AS_SOCKETS

          public static boolean APR_FILES_AS_SOCKETS

    - #### APR_CHARSET_EBCDIC

          public static boolean APR_CHARSET_EBCDIC

    - #### APR_TCP_NODELAY_INHERITED

          public static boolean APR_TCP_NODELAY_INHERITED

    - #### APR_O_NONBLOCK_INHERITED

          public static boolean APR_O_NONBLOCK_INHERITED

    - #### APR_SIZEOF_VOIDP

          public static int APR_SIZEOF_VOIDP

    - #### APR_PATH_MAX

          public static int APR_PATH_MAX

    - #### APRMAXHOSTLEN

          public static int APRMAXHOSTLEN

    - #### APR_MAX_IOVEC_SIZE

          public static int APR_MAX_IOVEC_SIZE

    - #### APR_MAX_SECS_TO_LINGER

          public static int APR_MAX_SECS_TO_LINGER

    - #### APR_MMAP_THRESHOLD

          public static int APR_MMAP_THRESHOLD

    - #### APR_MMAP_LIMIT

          public static int APR_MMAP_LIMIT

  - ### Method Detail

    - #### terminate

          public static void terminate()

    - #### versionString

          public static String versionString()

    - #### aprVersionString

          public static String aprVersionString()

    - #### globalPool

          public static long globalPool()

    - #### initialize

          public static boolean initialize(String libraryName)
                                    throws Exception

      Setup any APR internal data structures. This MUST be the first function called for any APR library.
      Parameters:
        `libraryName` - the name of the library to load
      Returns:
        `true` if the native code was initialized successfully otherwise `false`
      Throws:
        `Exception` - if a problem occurred during initialization

    - #### load

          public static void load(String filename)

      Calls System.load(filename). System.load() associates the loaded library with the class loader of the class that called the System method. A native library may not be loaded by more than one class loader, so calling the System method from a class that was loaded by a Webapp class loader will make it impossible for other Webapps to load it. Using this method will load the native library via a shared class loader (typically the Common class loader, but may vary in some configurations), so that it can be loaded by multiple Webapps.
      Parameters:
        `filename` - - absolute path of the native library

    - #### loadLibrary

          public static void loadLibrary(String libname)

      Calls System.loadLibrary(libname). System.loadLibrary() associates the loaded library with the class loader of the class that called the System method. A native library may not be loaded by more than one class loader, so calling the System method from a class that was loaded by a Webapp class loader will make it impossible for other Webapps to load it. Using this method will load the native library via a shared class loader (typically the Common class loader, but may vary in some configurations), so that it can be loaded by multiple Webapps.
      Parameters:
        `libname` - - the name of the native library

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