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ost::SharedMemPager Class Reference

The shared mempager uses a mutex to protect key access methods. mutex protected memory pager. More...

#include <misc.h>

Inheritance diagram for ost::SharedMemPager::

ost::MemPager ost::Mutex List of all members.

Protected Methods

 SharedMemPager (size_t pagesize=4096, const char *name=NULL)
 Create a mempager mutex pool. More...

void purge (void)
 Purge the memory pool while locked. More...

void* first (size_t size)
 Get the first memory page after locking. More...

void* alloc (size_t size)
 Get the last memory page after locking. More...


Detailed Description

The shared mempager uses a mutex to protect key access methods. mutex protected memory pager.

This class is used when a mempager will be shared by multiple threads.

Author:
David Sugar <dyfet@ostel.com>


Constructor & Destructor Documentation

ost::SharedMemPager::SharedMemPager ( size_t pagesize = 4096,
const char * name = NULL ) [protected]
 

Create a mempager mutex pool.

Parameters:
pagesize   page size for allocation.
name   a name for the pool.


Member Function Documentation

void * ost::SharedMemPager::alloc ( size_t size ) [protected, virtual]
 

Get the last memory page after locking.

Returns:
allocated memory space.
Parameters:
size   of request.

Reimplemented from ost::MemPager.

void * ost::SharedMemPager::first ( size_t size ) [protected, virtual]
 

Get the first memory page after locking.

Returns:
allocated memory space.
Parameters:
size   of request.

Reimplemented from ost::MemPager.

void ost::SharedMemPager::purge ( void ) [protected]
 

Purge the memory pool while locked.

Reimplemented from ost::MemPager.


The documentation for this class was generated from the following file:
Generated at Sat May 12 18:59:44 2007 for GNU CommonC++ by doxygen1.2.8.1 written by Dimitri van Heesch, © 1997-2001