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27 /* $Id: nmem.h,v 1.22 2006-10-09 21:02:41 adam Exp $ */
31 * \brief Header for Nibble Memory functions
33 * This is a simple and fairly wasteful little module for nibble memory
34 * allocation. Evemtually we'll put in something better.
40 #include <yaz/yconfig.h>
43 #include <libxml/parser.h>
54 /** \brief NMEM/YAZ MUTEX opaque pointer */
55 typedef struct nmem_mutex *NMEM_MUTEX;
56 /** \brief create Mutex */
57 YAZ_EXPORT void nmem_mutex_create(NMEM_MUTEX *);
58 /** \brief enter critical section / AKA lock */
59 YAZ_EXPORT void nmem_mutex_enter(NMEM_MUTEX);
60 /** \brief leave critical section / AKA unlock */
61 YAZ_EXPORT void nmem_mutex_leave(NMEM_MUTEX);
62 /** \brief destroy MUTEX */
63 YAZ_EXPORT void nmem_mutex_destroy(NMEM_MUTEX *);
65 /** \brief NMEM handle (an opaque pointer to memory) */
66 typedef struct nmem_control *NMEM;
68 /** \brief release all memory associaged with an NMEM handle */
69 YAZ_EXPORT void nmem_reset(NMEM n);
70 /** \brief returns size in bytes of memory for NMEM handle */
71 YAZ_EXPORT int nmem_total(NMEM n);
73 /** \brief allocates string on NMEM handle (similar strdup) */
74 YAZ_EXPORT char *nmem_strdup (NMEM mem, const char *src);
75 /** \brief allocates string on NMEM handle - allows NULL ptr buffer */
76 YAZ_EXPORT char *nmem_strdup_null (NMEM mem, const char *src);
77 /** \brief allocates string of certain size on NMEM handle */
78 YAZ_EXPORT char *nmem_strdupn (NMEM mem, const char *src, size_t n);
80 /** \brief allocates sub strings out of string using certain delimitors
81 \param nmem NMEM handle
82 \param delim delimitor chars (splits on each char in there)
83 \param dstr string to be split
84 \param darray result string array for each sub string
85 \param num number of result strings
87 YAZ_EXPORT void nmem_strsplit(NMEM nmem, const char *delim,
89 char ***darray, int *num);
91 /** \brief splits string into sub strings delimited by blanks
92 \param nmem NMEM handle
93 \param dstr string to be split
94 \param darray result string array for each sub string
95 \param num number of result strings
97 YAZ_EXPORT void nmem_strsplit_blank(NMEM nmem, const char *dstr,
98 char ***darray, int *num);
101 /** \brief copies TEXT Libxml2 node data to NMEM */
102 YAZ_EXPORT char *nmem_text_node_cdata(const xmlNode *ptr, NMEM nmem);
105 /** \brief creates and allocates integer for NMEM */
106 YAZ_EXPORT int *nmem_intdup (NMEM mem, int v);
108 /** \brief transfers memory from one NMEM handle to another */
109 YAZ_EXPORT void nmem_transfer (NMEM dst, NMEM src);
111 /** \brief internal (do not use) */
112 YAZ_EXPORT void nmem_critical_enter (void);
113 /** \brief internal (do not use) */
114 YAZ_EXPORT void nmem_critical_leave (void);
118 YAZ_EXPORT NMEM nmem_create_f(const char *file, int line);
119 YAZ_EXPORT void nmem_destroy_f(const char *file, int line, NMEM n);
120 YAZ_EXPORT void *nmem_malloc_f(const char *file, int line, NMEM n, int size);
121 #define nmem_create() nmem_create_f(__FILE__, __LINE__)
122 #define nmem_destroy(x) nmem_destroy_f(__FILE__, __LINE__, (x))
123 #define nmem_malloc(x, y) nmem_malloc_f(__FILE__, __LINE__, (x), (y))
125 YAZ_EXPORT void nmem_print_list (void);
126 YAZ_EXPORT void nmem_print_list_l (int level);
130 /** \brief returns new NMEM handle */
131 YAZ_EXPORT NMEM nmem_create(void);
133 /** \brief destroys NMEM handle and memory associated with it */
134 YAZ_EXPORT void nmem_destroy(NMEM n);
136 /** \brief allocate memory block on NMEM handle */
137 YAZ_EXPORT void *nmem_malloc(NMEM n, int size);
139 #define nmem_print_list()
143 /** \brief initializes NMEM system
144 This function increments a usage counter for NMEM.. Only
145 on first usage the system is initialized.. The \fn nmem_exit
146 decrements the counter. So these must be called in pairs
148 YAZ_EXPORT void nmem_init (void);
150 /** \brief destroys NMEM system */
151 YAZ_EXPORT void nmem_exit (void);
153 YAZ_EXPORT int yaz_errno (void);
154 YAZ_EXPORT void yaz_set_errno (int v);
155 YAZ_EXPORT void yaz_strerror(char *buf, int max);
157 /** \brief returns memory in use (by application)
158 \param p pointer to size (in bytes)
160 YAZ_EXPORT void nmem_get_memory_in_use(size_t *p);
161 /** \brief returns memory in free (for later reuse)
163 YAZ_EXPORT void nmem_get_memory_free(size_t *p);
171 * indent-tabs-mode: nil
173 * vim: shiftwidth=4 tabstop=8 expandtab