ost_SharedMemPager (3)

#include <misc.h>

Inherits ost::MemPager, and ost::Mutex.

Protected Member Functions

SharedMemPager (size_t pagesize=4096, const char *name=NULL)

Create a mempager mutex pool. void purge (void)

Purge the memory pool while locked. void * first (size_t size)

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

Get the last memory page after locking.

Additional Inherited Members

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

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

Author:

David Sugar [email protected] mutex protected memory pager.

ost::SharedMemPager::SharedMemPager (size_tpagesize = \fC4096\fP, const char *name = \fCNULL\fP)\fC [protected]\fP

Create a mempager mutex pool.

Parameters:

pagesize page size for allocation.

name a name for the pool.

void* ost::SharedMemPager::alloc (size_tsize)\fC [protected]\fP, \fC [virtual]\fP

Get the last memory page after locking.

Returns:

allocated memory space.

Parameters:

size of request.

Reimplemented from ost::MemPager.

void* ost::SharedMemPager::first (size_tsize)\fC [protected]\fP, \fC [virtual]\fP

Get the first memory page after locking.

Returns:

allocated memory space.

Parameters:

size of request.

Reimplemented from ost::MemPager.

void ost::SharedMemPager::purge (void)\fC [protected]\fP

Purge the memory pool while locked.

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