org.apache.cassandra.utils

Class NativeLibraryWindows

java.lang.Object

org.apache.cassandra.utils.NativeLibraryWindows

public class NativeLibraryWindows
extends java.lang.Object

A NativeLibraryWrapper implementation for Windows.

This implementation only offers support for the callGetpid method using the Windows/Kernel32 library.

See Also:

NativeLibraryWrapper, NativeLibrary

Constructor Summary

Constructors

Constructor and Description
NativeLibraryWindows()

Method Summary

Modifier and Type	Method and Description
int	callClose(int fd)
int	callFcntl(int fd, int command, long flags)
int	callFsync(int fd)
long	callGetpid()
int	callMlockall(int flags)
int	callMunlockall()
int	callOpen(java.lang.String path, int flags)
int	callPosixFadvise(int fd, long offset, int len, int flag)
com.sun.jna.Pointer	callStrerror(int errnum)
boolean	isAvailable() Checks if the library has been successfully linked.

Methods inherited from class java.lang.Object

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

Constructor Detail

NativeLibraryWindows

public NativeLibraryWindows()

Method Detail

callMlockall

public int callMlockall(int flags)
                 throws java.lang.UnsatisfiedLinkError,
                        java.lang.RuntimeException

Throws:

java.lang.UnsatisfiedLinkError

java.lang.RuntimeException

callMunlockall

public int callMunlockall()
                   throws java.lang.UnsatisfiedLinkError,
                          java.lang.RuntimeException

Throws:

java.lang.UnsatisfiedLinkError

java.lang.RuntimeException

callFcntl

public int callFcntl(int fd,
                     int command,
                     long flags)
              throws java.lang.UnsatisfiedLinkError,
                     java.lang.RuntimeException

Throws:

java.lang.UnsatisfiedLinkError

java.lang.RuntimeException

callPosixFadvise

public int callPosixFadvise(int fd,
                            long offset,
                            int len,
                            int flag)
                     throws java.lang.UnsatisfiedLinkError,
                            java.lang.RuntimeException

Throws:

java.lang.UnsatisfiedLinkError

java.lang.RuntimeException

callOpen

public int callOpen(java.lang.String path,
                    int flags)
             throws java.lang.UnsatisfiedLinkError,
                    java.lang.RuntimeException

Throws:

java.lang.UnsatisfiedLinkError

java.lang.RuntimeException

callFsync

public int callFsync(int fd)
              throws java.lang.UnsatisfiedLinkError,
                     java.lang.RuntimeException

Throws:

java.lang.UnsatisfiedLinkError

java.lang.RuntimeException

callClose

public int callClose(int fd)
              throws java.lang.UnsatisfiedLinkError,
                     java.lang.RuntimeException

Throws:

java.lang.UnsatisfiedLinkError

java.lang.RuntimeException

callStrerror

public com.sun.jna.Pointer callStrerror(int errnum)
                                 throws java.lang.UnsatisfiedLinkError,
                                        java.lang.RuntimeException

Throws:

java.lang.UnsatisfiedLinkError

java.lang.RuntimeException

callGetpid

public long callGetpid()
                throws java.lang.UnsatisfiedLinkError,
                       java.lang.RuntimeException

Returns:

the PID of the JVM running

Throws:

java.lang.UnsatisfiedLinkError - if we fail to link against Sigar

java.lang.RuntimeException - if another unexpected error is thrown by Sigar

isAvailable

public boolean isAvailable()

Checks if the library has been successfully linked.

Returns:

true if the library has been successfully linked, false otherwise.