Data Memory String Pools

Structure for storing a compact group of mutable, variable-length character strings. More...

Collaboration diagram for Data Memory String Pools:

Data Structures
struct	MDATA_STRPOOL
	A pool of immutable text strings. Deduplicates strings to save memory. More...

Macros
#define	MDATA_STRPOOL_FLAG_IS_LOCKED   0x01
#define	MDATA_STRPOOL_FLAG_DEDUPE   0x02
#define	mdata_strpool_sz(sp)   ((sp)->str_sz_max)
#define	mdata_strpool_is_locked(sp)
#define	mdata_strpool_lock(sp)
#define	mdata_strpool_unlock(sp)
#define	mdata_strpool_get(sp, idx)    ((idx >= 1 && idx < (sp)->str_sz) ? &((sp)->str_p[idx]) : NULL)
#define	mdata_strpool_get_sz(sp, idx)
#define	mdata_strpool_padding(str_sz)    (sizeof( size_t ) - ((str_sz + 1 /* NULL */) % sizeof( size_t )))

Typedefs
typedef size_t	mdata_strpool_idx_t

Functions
MERROR_RETVAL	mdata_strpool_check_idx (struct MDATA_STRPOOL *sp, mdata_strpool_idx_t idx)
	Verify if the given mdata_strpool_idx_t is valid in the given strpool.
mdata_strpool_idx_t	mdata_strpool_find (struct MDATA_STRPOOL *sp, const char *str, size_t str_sz)
MAUG_MHANDLE	mdata_strpool_extract (struct MDATA_STRPOOL *sp, mdata_strpool_idx_t idx)
	Return a dynamically-allocated memory handle containing the contents of the string at the given index.
mdata_strpool_idx_t	mdata_strpool_append (struct MDATA_STRPOOL *sp, const char *str, size_t str_sz, uint8_t flags)
MERROR_RETVAL	mdata_strpool_remove (struct MDATA_STRPOOL *sp, mdata_strpool_idx_t idx)
MERROR_RETVAL	mdata_strpool_alloc (struct MDATA_STRPOOL *sp, size_t alloc_sz)
void	mdata_strpool_free (struct MDATA_STRPOOL *sp)

Detailed Description

Structure for storing a compact group of mutable, variable-length character strings.

Macro Definition Documentation

mdata_strpool_get_sz

#define mdata_strpool_get_sz	(		sp,
			idx
	)

Value:

   ((idx >= sizeof( size_t ) && idx < (sp)->str_sz) ? \
      (size_t)(*(&((sp)->str_p[idx - sizeof( size_t )]))) : 0)

mdata_strpool_is_locked

#define mdata_strpool_is_locked

(

sp

)

Value:

   (MDATA_STRPOOL_FLAG_IS_LOCKED == \
   (MDATA_STRPOOL_FLAG_IS_LOCKED & (sp)->flags))

mdata_strpool_lock

#define mdata_strpool_lock

(

sp

)

Value:

   mdata_debug_printf( "locking strpool %p...", sp ); \
   if( NULL != (sp)->str_p ) { \
      error_printf( "str_p not null! double lock?" ); \
      retval = MERROR_ALLOC; \
      goto cleanup; \
   } \
   maug_mlock( (sp)->str_h, (sp)->str_p ); \
   maug_cleanup_if_null_lock( char*, (sp)->str_p ); \
   (sp)->flags |= MDATA_STRPOOL_FLAG_IS_LOCKED;

mdata_strpool_unlock

#define mdata_strpool_unlock

(

sp

)

Value:

   mdata_debug_printf( "unlocking strpool %p...", sp ); \
   if( NULL != (sp)->str_p ) { \
      maug_munlock( (sp)->str_h, (sp)->str_p ); \
      (sp)->flags &= ~MDATA_STRPOOL_FLAG_IS_LOCKED; \
   }