Trash

This group provides a generic container. More...

Data Structures
struct	_Eina_Trash
	The structure type for a generic container of an unused allocated pointer. More...

Macros
#define	EINA_TRASH_CLEAN(trash, data)   while ((data = eina_trash_pop(trash)))
	Definition for a macro to remove all the pointers from the trash.

Typedefs
typedef struct _Eina_Trash	Eina_Trash
	The type for structure _Eina_Trash.

Functions
static void	eina_trash_init (Eina_Trash **trash)
	Initializes a trash before using it.
static void	eina_trash_push (Eina_Trash **trash, void *data)
	Pushes an unused pointer in the trash instead of freeing it.
static void *	eina_trash_pop (Eina_Trash **trash)
	Pops an available pointer from the trash if possible.

Detailed Description

This group provides a generic container.

Macro Definition Documentation

EINA_TRASH_CLEAN

#define EINA_TRASH_CLEAN	(		trash,
			data
	)		while ((data = eina_trash_pop(trash)))

Definition for a macro to remove all the pointers from the trash.

This macro allows the cleaning of trash in an easy way. It removes all the pointers from trash until it's empty.

Parameters

[in,out]	trash	The trash to clean
[out]	data	The pointer extracted from the trash

Note

This macro can be used for freeing the data in the trash, like in the following example:

Eina_Trash *trash = NULL;
char *data;
 
// trash is filled with a pointer to some duped strings.
 
EINA_TRASH_CLEAN(&trash, data)
  free(data);

Note

This macro is useful when you implement some memory pool.

Function Documentation

eina_trash_init()

static void eina_trash_init ( Eina_Trash **  trash )

inlinestatic

Initializes a trash before using it.

This function just set to zero the trash to correctly initialize it.

Parameters

[in]

trash

The trash

Note

You can just set *trash to NULL and you will have the same result.

eina_trash_push()

static void eina_trash_push ( Eina_Trash **  trash, void *  data  )

inlinestatic

Pushes an unused pointer in the trash instead of freeing it.

Instead of freeing a pointer and put pressure on malloc/free you can push it in a trash for a later use. This function just provide a fast way to push a now unused pointer into a trash.

Parameters

[in,out]	trash	A pointer to an Eina_Trash
[in]	data	An unused pointer big enough to put a (void*)

Note

Do not use the pointer after insertion or bad things will happens.

This trash will not resize, nor do anything with the size of the region pointed by data, so it's your duty to manage the size.

eina_trash_pop()

static void * eina_trash_pop ( Eina_Trash **  trash )

inlinestatic

Pops an available pointer from the trash if possible.

Instead of calling malloc, and putting pressure on malloc/free you can recycle the content of the trash, if it's not empty.

Parameters

[in]

trash

A Eina_Trash handle

Note

This trash will not resize, nor do anything with the size of the region pointed by pointer inside the trash, so it's your duty to manage the size of the returned pointer.