Class MemoryImplUtilInternal

java.lang.Object

org.newsclub.net.unix.MemoryImplUtilInternal

public final class MemoryImplUtilInternal
extends Object

Internal class, to be used by junixsocket-memory only.

Author:

Christian Kohlschütter

Field Summary

Fields

Modifier and Type	Field	Description
static final int	MADV_DONTNEED
static final int	MADV_FREE
static final int	MADV_FREE_NOW
static final int	MADV_NORMAL
static final int	MADV_WILLNEED
static final int	MMODE_ANONYMOUS
static final int	MMODE_COPY_ON_WRITE
static final int	MMODE_FIXED
static final int	MMODE_PLACEHOLDER
static final int	MMODE_READ
static final int	MMODE_READ_WRITE
static final int	MMODE_SYNC
static final int	MMODE_WRITE
static final int	MOPT_CREAT
static final int	MOPT_EXCL
static final int	MOPT_RDONLY
static final int	MOPT_SEALABLE
static final int	MOPT_SECRET
static final int	MOPT_TRUNC
static final int	MOPT_UNLINK_UPON_CLOSE
static final int	S_IRGRP
static final int	S_IROTH
static final int	S_IRUSR
static final int	S_IWGRP
static final int	S_IWOTH
static final int	S_IWUSR

Method Summary

Modifier and Type	Method	Description
void	close(FileDescriptor fd)
boolean	futexIsInterProcess()
boolean	futexWait(long address, int ifValue, int timeoutMillis)
boolean	futexWake(long address, boolean wakeAll)
long	getSharedMemoryAllocationSize()
void	madvise(long address, long byteSize, int madv, boolean ignoreError)
ByteBuffer	mappedBuffer(long address, long length, FileDescriptor fdRef, int mmode, Object arenaSegment)
long	mmap(long address, FileDescriptor fdObj, long offset, long length, int mmode, FileDescriptor extraFd)
ByteBuffer	mmapShm(Object arenaSegment, FileDescriptor fd, long offset, long length, int mmode, int duplicates)
boolean	needToTrackSharedMemory()
long	shmOpen(FileDescriptor fdOut, String name, long truncateLength, int mode, int options)
void	shmUnlink(String name)
long	sizeOfSharedMemory(FileDescriptor fd)
void	unmap(long address, long byteSize, int duplicates, boolean ignoreError)

Methods inherited from class Object

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

Field Details

S_IRUSR

public static final int S_IRUSR

See Also:

• Constant Field Values

S_IWUSR

public static final int S_IWUSR

See Also:

• Constant Field Values

S_IRGRP

public static final int S_IRGRP

See Also:

• Constant Field Values

S_IWGRP

public static final int S_IWGRP

See Also:

• Constant Field Values

S_IROTH

public static final int S_IROTH

See Also:

• Constant Field Values

S_IWOTH

public static final int S_IWOTH

See Also:

• Constant Field Values

MOPT_RDONLY

public static final int MOPT_RDONLY

See Also:

• Constant Field Values

MOPT_CREAT

public static final int MOPT_CREAT

See Also:

• Constant Field Values

MOPT_EXCL

public static final int MOPT_EXCL

See Also:

• Constant Field Values

MOPT_TRUNC

public static final int MOPT_TRUNC

See Also:

• Constant Field Values

MOPT_SEALABLE

public static final int MOPT_SEALABLE

See Also:

• Constant Field Values

MOPT_SECRET

public static final int MOPT_SECRET

See Also:

• Constant Field Values

MOPT_UNLINK_UPON_CLOSE

public static final int MOPT_UNLINK_UPON_CLOSE

See Also:

• Constant Field Values

MMODE_READ

public static final int MMODE_READ

See Also:

• Constant Field Values

MMODE_WRITE

public static final int MMODE_WRITE

See Also:

• Constant Field Values

MMODE_READ_WRITE

public static final int MMODE_READ_WRITE

See Also:

• Constant Field Values

MMODE_COPY_ON_WRITE

public static final int MMODE_COPY_ON_WRITE

See Also:

• Constant Field Values

MMODE_SYNC

public static final int MMODE_SYNC

See Also:

• Constant Field Values

MMODE_FIXED

public static final int MMODE_FIXED

See Also:

• Constant Field Values

MMODE_ANONYMOUS

public static final int MMODE_ANONYMOUS

See Also:

• Constant Field Values

MMODE_PLACEHOLDER

public static final int MMODE_PLACEHOLDER

See Also:

• Constant Field Values

MADV_NORMAL

public static final int MADV_NORMAL

See Also:

• Constant Field Values

MADV_FREE

public static final int MADV_FREE

See Also:

• Constant Field Values

MADV_FREE_NOW

public static final int MADV_FREE_NOW

See Also:

• Constant Field Values

MADV_WILLNEED

public static final int MADV_WILLNEED

See Also:

• Constant Field Values

MADV_DONTNEED

public static final int MADV_DONTNEED

See Also:

• Constant Field Values

Method Details

shmUnlink

public void shmUnlink(String name)
               throws IOException

Throws:

IOException

shmOpen

public long shmOpen(FileDescriptor fdOut,
 String name,
 long truncateLength,
 int mode,
 int options)
             throws IOException

Throws:

IOException

close

public void close(FileDescriptor fd)
           throws IOException

Throws:

IOException

getSharedMemoryAllocationSize

public long getSharedMemoryAllocationSize()

mmapShm

public ByteBuffer mmapShm(Object arenaSegment,
 FileDescriptor fd,
 long offset,
 long length,
 int mmode,
 int duplicates)
                   throws IOException

Throws:

IOException

mappedBuffer

public ByteBuffer mappedBuffer(long address,
 long length,
 FileDescriptor fdRef,
 int mmode,
 Object arenaSegment)
                        throws IOException

Throws:

IOException

mmap

public long mmap(long address,
 FileDescriptor fdObj,
 long offset,
 long length,
 int mmode,
 FileDescriptor extraFd)
          throws IOException

Throws:

IOException

unmap

public void unmap(long address,
 long byteSize,
 int duplicates,
 boolean ignoreError)
           throws IOException

Throws:

IOException

madvise

public void madvise(long address,
 long byteSize,
 int madv,
 boolean ignoreError)
             throws IOException

Throws:

IOException

futexWait

public boolean futexWait(long address,
 int ifValue,
 int timeoutMillis)
                  throws IOException

Throws:

IOException

futexWake

public boolean futexWake(long address,
 boolean wakeAll)
                  throws IOException

Throws:

IOException

needToTrackSharedMemory

public boolean needToTrackSharedMemory()

sizeOfSharedMemory

public long sizeOfSharedMemory(FileDescriptor fd)
                        throws IOException

Throws:

IOException

futexIsInterProcess

public boolean futexIsInterProcess()