public class NativeLibraryLinux
extends java.lang.Object
NativeLibraryWrapper implementation for Linux.
When JNA is initialized, all methods that have the 'native' keyword will be attmpted to be linked against. As Java doesn't have the equivalent of a #ifdef, this means if a native method like posix_fadvise is defined in the class but not available on the target operating system (e.g. posix_fadvise is not availble on Darwin/Mac) this will cause the entire initial linking and initialization of JNA to fail. This means other native calls that are supported on that target operating system will be unavailable simply because of one native defined method not supported on the runtime operating system.
NativeLibraryWrapper,
NativeLibrary| Constructor and Description |
|---|
NativeLibraryLinux() |
| 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.
|
public int callMlockall(int flags)
throws java.lang.UnsatisfiedLinkError,
java.lang.RuntimeException
java.lang.UnsatisfiedLinkErrorjava.lang.RuntimeExceptionpublic int callMunlockall()
throws java.lang.UnsatisfiedLinkError,
java.lang.RuntimeException
java.lang.UnsatisfiedLinkErrorjava.lang.RuntimeExceptionpublic int callFcntl(int fd,
int command,
long flags)
throws java.lang.UnsatisfiedLinkError,
java.lang.RuntimeException
java.lang.UnsatisfiedLinkErrorjava.lang.RuntimeExceptionpublic int callPosixFadvise(int fd,
long offset,
int len,
int flag)
throws java.lang.UnsatisfiedLinkError,
java.lang.RuntimeException
java.lang.UnsatisfiedLinkErrorjava.lang.RuntimeExceptionpublic int callOpen(java.lang.String path,
int flags)
throws java.lang.UnsatisfiedLinkError,
java.lang.RuntimeException
java.lang.UnsatisfiedLinkErrorjava.lang.RuntimeExceptionpublic int callFsync(int fd)
throws java.lang.UnsatisfiedLinkError,
java.lang.RuntimeException
java.lang.UnsatisfiedLinkErrorjava.lang.RuntimeExceptionpublic int callClose(int fd)
throws java.lang.UnsatisfiedLinkError,
java.lang.RuntimeException
java.lang.UnsatisfiedLinkErrorjava.lang.RuntimeExceptionpublic com.sun.jna.Pointer callStrerror(int errnum)
throws java.lang.UnsatisfiedLinkError,
java.lang.RuntimeException
java.lang.UnsatisfiedLinkErrorjava.lang.RuntimeExceptionpublic long callGetpid()
throws java.lang.UnsatisfiedLinkError,
java.lang.RuntimeException
java.lang.UnsatisfiedLinkErrorjava.lang.RuntimeExceptionpublic boolean isAvailable()
true if the library has been successfully linked, false otherwise.Copyright © 2018 The Apache Software Foundation