libsent/src/util/mybmalloc.c File Reference

Dynamic memory allocation per large block. More...

#include <sent/stddefs.h>

Include dependency graph for mybmalloc.c:

Go to the source code of this file.

Data Structures
struct	_linked_buffer
	Linked data structure to hold malloced areas. More...
Defines
#define	MYBMALLOC_LINKED   1
	Use improved version that enables freeing.
Typedefs
typedef _linked_buffer *	LINKED_BUFFER
	Linked data structure to hold malloced areas.
Functions
void	mybmalloc_set_param ()
void *	mybmalloc (int size)
void	mybmalloc_free (void)
char *	mybstrdup (char *s)
void *	mybmalloc2 (int size, BMALLOC_BASE **list)
char *	mybstrdup2 (char *s, BMALLOC_BASE **list)
void	mybfree2 (BMALLOC_BASE **list)
Variables
static boolean	mybmalloc_initialized = FALSE
	TRUE if mybmalloc has already initialized.
static char *	current = NULL
	Pointer to the current block.
static char *	nowp = NULL
	Pointer to the current allocating point in the block.
static char *	endp = NULL
	Pointer at the end of the current block.
static unsigned int	blocksize
	Block size in bytes.
static int	align
	Allocation alignment size in bytes.
static unsigned int	align_mask
	Bit mask to compute the actual aligned memory size.
static LINKED_BUFFER	first_linked_buffer = NULL
	Pointer to the first linked buffer.
static LINKED_BUFFER	last_linked_buffer = NULL
	Pointer to the last linked buffer.

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Detailed Description

Dynamic memory allocation per large block.

Author:

Akinobu LEE

Date:

Thu Feb 17 16:14:59 2005

This file defines functions that allocate memories per a certain big block instead of allocating for each required sizes. This function will improve the overhead of memory management operation, especially when an application requires huge number of small segments to be allocated. These functions are mainly used for allocating memory for acoustic models and language models.

Revision

1.5

Definition in file mybmalloc.c.

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Function Documentation

void mybmalloc_set_param

(

)

Set block size and memory alignment factor.

Definition at line 70 of file mybmalloc.c.

Referenced by mybmalloc(), mybmalloc2(), and system_bootup().

void* mybmalloc

(

int

size

)

Malloc specified size and return the pointer.

Parameters:

size

[in] required size in bytes

Returns:

pointer to the allocated area.

Definition at line 102 of file mybmalloc.c.

Referenced by mybstrdup().

void mybmalloc_free

(

void

)

Free all the allocated area.

Definition at line 180 of file mybmalloc.c.

char* mybstrdup

(

char *

s

)

String duplication using mybmalloc().

Parameters:

s

[in] string to be duplicated

Returns:

pointer to the newly allocated string.

Definition at line 210 of file mybmalloc.c.

void* mybmalloc2	(	int	size,
		BMALLOC_BASE **	list
	)

Another version of memory block allocation, used for tree lexicon.

Parameters:

	size	[in] memory size to be allocated
	list	[i/o] total memory management information (will be updated here)

Returns:

pointer to the newly allocated area.

Definition at line 228 of file mybmalloc.c.

Referenced by add_to_error(), add_wacc(), bt_relocate_rw(), dens_new(), dens_read(), get_back_trellis_end(), hmm_add_physical_to_logical(), hmm_add_pseudo_phones_sub(), htk_hmmdata_new(), htk_hmmdata_read(), make_hmm_basephone_list(), mybstrdup2(), outprob_cache_extend(), rd_data(), rd_dens(), rd_state(), rd_tmix(), rd_trans(), rd_var(), rdhmmlist(), rdn_str(), state_new(), state_read(), tmix_create_codebook_index(), tmix_read(), trans_new(), trans_read(), var_new(), var_read(), voca_load_htkdict_line(), wchmm_add_word(), and wchmm_duplicate_state().

char* mybstrdup2	(	char *	s,
		BMALLOC_BASE **	list
	)

String duplication using mybmalloc2().

Parameters:

	s	[in] string to be duplicated
	list	[i/o] total memory management information pointer

Returns:

pointer to the newly allocated string.

Definition at line 265 of file mybmalloc.c.

Referenced by rdhmmdef(), rdhmmlist(), and tmix_read().

void mybfree2

(

BMALLOC_BASE **

list

)

Free all memories allocated by mybmalloc2()

Parameters:

list

[i/o] total memory management information (will be cleaned here)

Definition at line 280 of file mybmalloc.c.

Referenced by bt_prepare(), hmminfo_free(), outprob_cache_free(), wchmm_free(), and word_info_free().

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