ACE_Sbrk_Memory_Pool Class Reference

Make a memory pool that is based on <sbrk(2)>. More...

#include <Sbrk_Memory_Pool.h>

Public Types
typedef ACE_Sbrk_Memory_Pool_Options	OPTIONS

Public Member Functions
	ACE_Sbrk_Memory_Pool (const ACE_TCHAR *backing_store_name=0, const OPTIONS *options=0)
	Initialize the pool.
virtual	~ACE_Sbrk_Memory_Pool ()
virtual void *	init_acquire (size_t nbytes, size_t &rounded_bytes, int &first_time)
	Ask system for initial chunk of local memory.
virtual void *	acquire (size_t nbytes, size_t &rounded_bytes)
virtual int	release (int destroy=1)
	Instruct the memory pool to release all of its resources.
virtual int	sync (ssize_t len=-1, int flags=MS_SYNC)
virtual int	sync (void *addr, size_t len, int flags=MS_SYNC)
virtual int	protect (ssize_t len=-1, int prot=PROT_RDWR)
virtual int	protect (void *addr, size_t len, int prot=PROT_RDWR)
virtual void	dump () const
	Dump the state of an object.
virtual void *	base_addr () const

Public Attributes
	ACE_ALLOC_HOOK_DECLARE
	Declare the dynamic allocation hooks.

Protected Member Functions
virtual size_t	round_up (size_t nbytes)

Detailed Description

Make a memory pool that is based on <sbrk(2)>.

Member Typedef Documentation

OPTIONS

typedef ACE_Sbrk_Memory_Pool_Options ACE_Sbrk_Memory_Pool::OPTIONS

Constructor & Destructor Documentation

ACE_Sbrk_Memory_Pool()

ACE_Sbrk_Memory_Pool::ACE_Sbrk_Memory_Pool	(	const ACE_TCHAR *	backing_store_name = 0,
		const OPTIONS *	options = 0 )

Initialize the pool.

~ACE_Sbrk_Memory_Pool()

ACE_Sbrk_Memory_Pool::~ACE_Sbrk_Memory_Pool ( )

virtual

Member Function Documentation

acquire()

void * ACE_Sbrk_Memory_Pool::acquire ( size_t nbytes, size_t & rounded_bytes )

virtual

Acquire at least nbytes from the memory pool. rounded_bytes is the actual number of bytes allocated.

base_addr()

void * ACE_Sbrk_Memory_Pool::base_addr ( ) const

virtual

Return the base address of this memory pool, 0 if base_addr never changes.

dump()

void ACE_Sbrk_Memory_Pool::dump ( ) const

virtual

Dump the state of an object.

init_acquire()

void * ACE_Sbrk_Memory_Pool::init_acquire ( size_t nbytes, size_t & rounded_bytes, int & first_time )

virtual

Ask system for initial chunk of local memory.

protect() [1/2]

int ACE_Sbrk_Memory_Pool::protect ( ssize_t len = -1, int prot = PROT_RDWR )

virtual

Change the protection of the pages of the mapped region to prot starting at this->base_addr_ up to len bytes. If len == -1 then change protection of all pages in the mapped region.

protect() [2/2]

int ACE_Sbrk_Memory_Pool::protect ( void * addr, size_t len, int prot = PROT_RDWR )

virtual

Change the protection of the pages of the mapped region to prot starting at addr up to len bytes.

release()

int ACE_Sbrk_Memory_Pool::release ( int destroy = 1 )

virtual

Instruct the memory pool to release all of its resources.

round_up()

size_t ACE_Sbrk_Memory_Pool::round_up ( size_t nbytes )

protectedvirtual

Implement the algorithm for rounding up the request to an appropriate chunksize.

sync() [1/2]

int ACE_Sbrk_Memory_Pool::sync ( ssize_t len = -1, int flags = MS_SYNC )

virtual

Sync len bytes of the memory region to the backing store starting at this->base_addr_. If len == -1 then sync the whole region.

sync() [2/2]

int ACE_Sbrk_Memory_Pool::sync ( void * addr, size_t len, int flags = MS_SYNC )

virtual

Sync len bytes of the memory region to the backing store starting at addr.

Member Data Documentation

ACE_ALLOC_HOOK_DECLARE

ACE_Sbrk_Memory_Pool::ACE_ALLOC_HOOK_DECLARE

Declare the dynamic allocation hooks.

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The documentation for this class was generated from the following files:

• Sbrk_Memory_Pool.h
• Sbrk_Memory_Pool.cpp