nmem.c File Reference

Implements Nibble Memory. More...

#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <stddef.h>
#include <yaz/xmalloc.h>
#include <yaz/nmem.h>
#include <yaz/log.h>

Go to the source code of this file.

Data Structures
struct	nmem_block
struct	nmem_control
struct	align

Macros
#define	NMEM_CHUNK   (4*1024)
#define	NMEM_ALIGN   (offsetof(struct align, u))

Functions
static void	free_block (struct nmem_block *p)
static struct nmem_block *	get_block (size_t size)
void	nmem_reset (NMEM n)
	releases memory associaged with an NMEM handle
void *	nmem_malloc (NMEM n, size_t size)
	allocates memory block on NMEM handle
size_t	nmem_total (NMEM n)
	returns size in bytes of memory for NMEM handle
NMEM	nmem_create (void)
	returns new NMEM handle
void	nmem_destroy (NMEM n)
	destroys NMEM handle and memory associated with it
void	nmem_transfer (NMEM dst, NMEM src)
	transfers memory from one NMEM handle to another

Variables
static int	log_level = 0
static int	log_level_initialized = 0

Detailed Description

Implements Nibble Memory.

This is a simple and fairly wasteful little module for nibble memory allocation.

Definition in file nmem.c.

Macro Definition Documentation

#define NMEM_ALIGN   (offsetof(struct align, u))

Definition at line 59 of file nmem.c.

Referenced by nmem_malloc().

#define NMEM_CHUNK   (4*1024)

Definition at line 27 of file nmem.c.

Referenced by get_block().

Function Documentation

static void free_block ( struct nmem_block *  p )

static

Definition at line 64 of file nmem.c.

References nmem_block::buf, log_level, xfree, and yaz_log().

Referenced by nmem_reset().

static struct nmem_block* get_block ( size_t  size )

staticread

Definition at line 75 of file nmem.c.

References nmem_block::buf, log_level, NMEM_CHUNK, nmem_block::size, nmem_block::top, xmalloc, and yaz_log().

Referenced by nmem_malloc().

NMEM nmem_create

(

void

)

returns new NMEM handle

Returns

NMEM handle

Definition at line 140 of file nmem.c.

References nmem_control::blocks, log_level, log_level_initialized, nmem_control::next, nmem_control::total, xmalloc, and yaz_log_module_level().

Referenced by ccl_stop_words_create(), construct_marc(), cql_parser_create(), cql_transform(), cql_transform_create(), odr_createmem(), odr_extract_mem(), solr_transform(), solr_transform_create(), xml_config_open(), yaz_file_glob(), yaz_marc_create(), yaz_record_conv_create(), yaz_record_render(), yaz_solr_sortkeys_to_sort_spec(), yaz_srw_sortkeys_to_sort_spec(), and ZOOM_handle_Z3950_apdu().

void nmem_destroy

(

NMEM

n

)

destroys NMEM handle and memory associated with it

Parameters

n	NMEM handle

Definition at line 158 of file nmem.c.

References nmem_reset(), and xfree.

Referenced by ccl_stop_words_destroy(), construct_marc(), cql_parser_destroy(), cql_transform(), cql_transform_close(), destroy_marc(), destroy_xslt(), handle_srw_response(), handle_srw_scan_response(), handle_Z3950_records(), handle_Z3950_scan_response(), odr_destroy(), request_release(), solr_transform(), solr_transform_close(), xml_config_close(), yaz_file_globfree(), yaz_marc_destroy(), yaz_record_conv_destroy(), yaz_record_render(), yaz_solr_sortkeys_to_sort_spec(), yaz_srw_sortkeys_to_sort_spec(), and ZOOM_handle_Z3950_apdu().

void* nmem_malloc	(	NMEM	n,
		size_t	size
	)

allocates memory block on NMEM handle

Parameters

n	NMEM handle
size	number of bytes to be allocated

Returns

pointer to allocated memory

Definition at line 111 of file nmem.c.

References nmem_control::blocks, nmem_block::buf, get_block(), nmem_block::next, NMEM_ALIGN, nmem_block::size, nmem_block::top, nmem_control::total, yaz_log(), and YLOG_FATAL.

Referenced by append_removed_item(), base64_render(), circulation(), circulations(), conf_retrieval(), construct_marc(), cql_node_mk_boolean(), cql_node_mk_sc(), cql_node_mk_sort(), cql_transform_parse_tok_line(), extract_user_pass(), gfs_listen_new(), gfs_server_new(), glob_r(), holdingsRecord(), nmem_booldup(), nmem_dup_xml_content(), nmem_intdup(), nmem_strdup(), nmem_strdupn(), nmem_strsplit_escape2(), nmem_text_node_cdata(), odr_getoidbystr_nmem(), odr_malloc(), odr_oiddup_nmem(), process_presentRequest(), process_searchRequest(), putb(), response_searchRequest(), solr_transform_parse_tok_line(), sort_them(), volume(), volumes(), xml_config_read(), yaz_file_glob(), yaz_get_proposal_charneg(), yaz_get_response_charneg(), yaz_marc_add_node(), yaz_marc_add_subfield(), yaz_marc_read_turbo_xml_fields(), yaz_marc_read_turbo_xml_subfields(), yaz_marc_read_xml_subfields(), yaz_record_conv_configure_t(), yaz_record_render(), yaz_set_esn(), yaz_xml_to_opac_ptr(), yylex(), and z_ext_record_oid_nmem().

void nmem_reset

(

NMEM

n

)

releases memory associaged with an NMEM handle

Parameters

n	NMEM handle

Definition at line 95 of file nmem.c.

References nmem_control::blocks, free_block(), log_level, nmem_block::next, nmem_control::total, and yaz_log().

Referenced by ccl_stop_words_tree(), cql_parser_stream(), nmem_destroy(), odr_reset(), yaz_marc_reset(), and yaz_record_conv_reset().

size_t nmem_total

(

NMEM

n

)

returns size in bytes of memory for NMEM handle

Returns

number of bytes

Definition at line 135 of file nmem.c.

References nmem_control::total.

Referenced by odr_total().

void nmem_transfer	(	NMEM	dst,
		NMEM	src
	)

transfers memory from one NMEM handle to another

Parameters

src	source NMEM handle
dst	destination NMEM handle

Definition at line 167 of file nmem.c.

References nmem_control::blocks, nmem_block::next, and nmem_control::total.

Referenced by handle_srw_response(), handle_srw_scan_response(), handle_Z3950_records(), handle_Z3950_scan_response(), and process_searchRequest().

Variable Documentation

int log_level = 0

static

Definition at line 61 of file nmem.c.

Referenced by free_block(), get_block(), nmem_create(), and nmem_reset().

int log_level_initialized = 0

static

Definition at line 62 of file nmem.c.

Referenced by nmem_create().