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ost::SharedMemPager

NAME

ost::SharedMemPager −

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

SYNOPSIS

#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.

Detailed Description

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 <dyfet AT ostel DOT com> mutex protected memory pager.

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.

Author

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