mempool Class Reference

Memory pool. More...

#include <mempool.h>

Collaboration diagram for mempool:

[legend]

List of all members.

Public Member Functions
	mempool (int is, int bs=MP_BLOCK_SIZE)
	Creates a memory pool.
	~mempool ()
	Destroys memory pool.
void	map (std::ostream &co)
	Prints a map of memory occupancy.
char *	allocate ()
	Allocates a single memory entry.
int	free (char *addr)
	Frees a single memory entry.
void	stat ()
	Prints statistics about this mempool.
int	used ()
	Returns effectively used memory (bytes).
int	wasted ()
	Returns amount of wasted memory (bytes).

---

Detailed Description

Memory pool.

A memory pool is composed of:

• a linked list of block_num memory blocks
• each block might contain up to block_size items
• each item is made of exactly item_size bytes

Definition at line 61 of file mempool.h.

---

Constructor & Destructor Documentation

mempool::mempool	(	int	is,
		int	bs = MP_BLOCK_SIZE
	)

Creates a memory pool.

The pool contains:

• entries of size is
• tables for bs entries

Definition at line 46 of file mempool.cpp.

References NULL.

mempool::~mempool

(

)

Destroys memory pool.

Definition at line 159 of file mempool.cpp.

References NULL.

---

Member Function Documentation

char * mempool::allocate

(

)

Allocates a single memory entry.

Definition at line 87 of file mempool.cpp.

References NULL.

Referenced by ngramcache::add(), storage::allocate(), htable< T >::insert(), and storage::reallocate().

Here is the caller graph for this function:

int mempool::free

(

char *

addr

)

Frees a single memory entry.

Definition at line 132 of file mempool.cpp.

Referenced by storage::free(), and storage::reallocate().

Here is the caller graph for this function:

void mempool::map

(

std::ostream &

co

)

Prints a map of memory occupancy.

void mempool::stat

(

)

Prints statistics about this mempool.

Definition at line 205 of file mempool.cpp.

References VERBOSE.

int mempool::used

(

)

[inline]

Returns effectively used memory (bytes).

includes 8 bytes required by each call of new

Definition at line 93 of file mempool.h.

Referenced by ngramcache::stat(), storage::stat(), htable< int * >::used(), and wasted().

Here is the caller graph for this function:

int mempool::wasted

(

)

[inline]

Returns amount of wasted memory (bytes).

Definition at line 98 of file mempool.h.

References used().

Referenced by ngramcache::stat(), and storage::stat().

Here is the call graph for this function:

Here is the caller graph for this function:

---

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

• /disk4/html/www/moses/doxygen/irstlm/trunk/src/mempool.h
• /disk4/html/www/moses/doxygen/irstlm/trunk/src/mempool.cpp