public class Shm
extends java.lang.Object
Constructor and Description |
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Shm() |
Modifier and Type | Method and Description |
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static long |
attach(java.lang.String filename,
long pool)
Attach to a shared memory segment that was created
by another process.
|
static long |
baseaddr(long m)
Retrieve the base address of the shared memory segment.
|
static java.nio.ByteBuffer |
buffer(long m)
Retrieve new ByteBuffer base address of the shared memory segment.
|
static long |
create(long reqsize,
java.lang.String filename,
long pool)
Create and make accessible a shared memory segment.
|
static int |
destroy(long m)
Destroy a shared memory segment and associated memory.
|
static int |
detach(long m)
Detach from a shared memory segment without destroying it.
|
static int |
remove(java.lang.String filename,
long pool)
Remove shared memory segment associated with a filename.
|
static long |
size(long m)
Retrieve the length of a shared memory segment in bytes.
|
public static long create(long reqsize, java.lang.String filename, long pool) throws Error
reqsize
- The desired size of the segment.filename
- The file to use for shared memory on platforms that
require it.pool
- the pool from which to allocate the shared memory
structure.Error
public static int remove(java.lang.String filename, long pool)
filename
- The filename associated with shared-memory segment which
needs to be removedpool
- The pool used for file operationspublic static int destroy(long m)
m
- The shared memory segment structure to destroy.public static long attach(java.lang.String filename, long pool) throws Error
filename
- The file used to create the original segment.
(This MUST match the original filename.)pool
- the pool from which to allocate the shared memory
structure for this process.Error
public static int detach(long m)
m
- The shared memory structure representing the segment
to detach from.public static long baseaddr(long m)
m
- The shared memory segment from which to retrieve
the base address.public static long size(long m)
m
- The shared memory segment from which to retrieve
the segment length.public static java.nio.ByteBuffer buffer(long m)
m
- The shared memory segment from which to retrieve
the base address.Copyright © 2000-2018 Apache Software Foundation. All Rights Reserved.