org.apache.cassandra.utils

Class CLibraryWindows

java.lang.Object

org.apache.cassandra.utils.CLibraryWindows

public class CLibraryWindows
extends java.lang.Object

A CLibraryWrapper implementation for Windows.

As libc isn't available on Windows these implementations will obviously be a no-op, however when possible implementations are used that are Windows friendly that will return the same return value.

See Also:

CLibraryWrapper, CLibrary

Constructor Summary

Constructors

Constructor and Description
CLibraryWindows()

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	jnaAvailable()

Methods inherited from class java.lang.Object

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

Constructor Detail

CLibraryWindows

public CLibraryWindows()

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

jnaAvailable

public boolean jnaAvailable()