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>
#include <yaz/snprintf.h>

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	nmem_lock (void)
static void	nmem_unlock (void)
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
void	nmem_init_globals (void)
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
int	nmem_get_status (char *dst, size_t l)
	returns memory status for NMEM - as XML

Variables
static size_t	no_nmem_handles = 0
static size_t	no_nmem_blocks = 0
static size_t	nmem_allocated = 0
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

◆ NMEM_ALIGN

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

Definition at line 71 of file nmem.c.

Referenced by nmem_malloc().

◆ NMEM_CHUNK

#define NMEM_CHUNK (4*1024)

Definition at line 39 of file nmem.c.

Referenced by get_block().

Function Documentation

◆ free_block()

void free_block ( struct nmem_block * p )

static

Definition at line 90 of file nmem.c.

References nmem_block::buf, log_level, nmem_allocated, nmem_lock(), nmem_unlock(), no_nmem_blocks, nmem_block::size, xfree, and yaz_log().

Referenced by nmem_reset().

◆ get_block()

struct nmem_block * get_block ( size_t size )

static

Definition at line 105 of file nmem.c.

References nmem_block::buf, log_level, nmem_allocated, NMEM_CHUNK, nmem_lock(), nmem_unlock(), no_nmem_blocks, nmem_block::size, nmem_block::top, xmalloc, and yaz_log().

Referenced by nmem_malloc().

◆ nmem_create()

NMEM nmem_create ( void )

returns new NMEM handle

Returns: NMEM handle

Definition at line 181 of file nmem.c.

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

Referenced by ccl_stop_words_create(), construct_marc(), construct_rdf_lookup(), construct_select(), construct_xslt(), cql_parser_create(), cql_transform_create(), cql_transform_r(), odr_createmem(), odr_extract_mem(), xml_config_open(), yaz_file_glob2(), 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().

◆ nmem_destroy()

void nmem_destroy ( NMEM n )

destroys NMEM handle and memory associated with it

Parameters

n	NMEM handle

Definition at line 204 of file nmem.c.

References nmem_lock(), nmem_reset(), nmem_unlock(), no_nmem_handles, and xfree.

Referenced by ccl_stop_words_destroy(), construct_marc(), construct_rdf_lookup(), construct_select(), construct_xslt(), cql_parser_destroy(), cql_transform_close(), cql_transform_r(), destroy_marc(), destroy_rdf_lookup(), destroy_select(), destroy_xslt(), handle_srw_response(), handle_srw_scan_response(), handle_Z3950_records(), handle_Z3950_scan_response(), odr_destroy(), request_release(), 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().

◆ nmem_get_status()

int nmem_get_status	(	char *	dst,
		size_t	l )

returns memory status for NMEM - as XML

Parameters

dst	buffer for result
l	size of buffer (200 should suffice)

Returns: 0 if OK; -1 on failure

Definition at line 229 of file nmem.c.

References nmem_allocated, nmem_lock(), nmem_unlock(), no_nmem_blocks, no_nmem_handles, and yaz_snprintf().

◆ nmem_init_globals()

void nmem_init_globals ( void )

Definition at line 174 of file nmem.c.

References nmem_lock(), and nmem_unlock().

Referenced by yaz_init_globals().

◆ nmem_lock()

void nmem_lock ( void )

static

Definition at line 76 of file nmem.c.

Referenced by free_block(), get_block(), nmem_create(), nmem_destroy(), nmem_get_status(), and nmem_init_globals().

◆ nmem_malloc()

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 145 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 add_entry(), append_removed_item(), base64_render(), circulation(), circulations(), conf_retrieval(), construct_marc(), construct_one_rdf_lookup(), construct_rdf_lookup(), construct_select(), construct_xslt(), 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(), 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(), sort_them(), volume(), volumes(), xml_config_read(), yaz_file_glob2(), 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().

◆ nmem_reset()

void nmem_reset ( NMEM n )

releases memory associaged with an NMEM handle

Parameters

n	NMEM handle

Definition at line 129 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().

◆ nmem_total()

size_t nmem_total ( NMEM n )

returns size in bytes of memory for NMEM handle

Returns: number of bytes

Definition at line 169 of file nmem.c.

References nmem_control::total.

Referenced by odr_total().

◆ nmem_transfer()

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 216 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().

◆ nmem_unlock()

void nmem_unlock ( void )

static

Definition at line 83 of file nmem.c.

Referenced by free_block(), get_block(), nmem_create(), nmem_destroy(), nmem_get_status(), and nmem_init_globals().

Variable Documentation

◆ log_level

int log_level = 0

static

Definition at line 73 of file nmem.c.

◆ log_level_initialized

int log_level_initialized = 0

static

Definition at line 74 of file nmem.c.

◆ nmem_allocated

size_t nmem_allocated = 0

static

Definition at line 37 of file nmem.c.

Referenced by free_block(), get_block(), and nmem_get_status().

◆ no_nmem_blocks

size_t no_nmem_blocks = 0

static

Definition at line 36 of file nmem.c.

Referenced by free_block(), get_block(), and nmem_get_status().

◆ no_nmem_handles

size_t no_nmem_handles = 0

static

Definition at line 35 of file nmem.c.

Referenced by nmem_create(), nmem_destroy(), and nmem_get_status().

Data Structures

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ NMEM_ALIGN

◆ NMEM_CHUNK

Function Documentation

◆ free_block()

◆ get_block()

◆ nmem_create()

◆ nmem_destroy()

◆ nmem_get_status()

◆ nmem_init_globals()

◆ nmem_lock()

◆ nmem_malloc()

◆ nmem_reset()

◆ nmem_total()

◆ nmem_transfer()

◆ nmem_unlock()

Variable Documentation

◆ log_level

◆ log_level_initialized

◆ nmem_allocated

◆ no_nmem_blocks

◆ no_nmem_handles