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java.lang.Objectorg.apache.tomcat.jni.Shm
public class Shm
Shm
| Constructor Summary | |
|---|---|
Shm()
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| Method Summary | |
|---|---|
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. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public Shm()
| Method Detail |
|---|
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.
Errorpublic 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.
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