src/data_object.c File Reference

Implementation of the base data_object_t ADT and interface mechanism. More...

#include <stdlib.h>
#include <errno.h>
#include "data_object.h"
#include "data_object_internal.h"
#include "debug.h"

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Functions
int	data_object_create_impl (data_object_t **obj, void *impl, struct data_object_funcs *funcs)
	Creates a data_object_t using a specific implementation.
void *	data_object_get_impl (data_object_t *obj)
	Gets the private implementation data of a data_object_t,.
int	data_object_get_data (data_object_t *obj, void **buf, off_t offset, off_t *length, data_object_flags flags)
	Gets a pointer to data from the data object.
int	data_object_free (data_object_t *obj)
	Frees the data object and its resources.
int	data_object_update_usage (void *obj, int change)
	Updates the usage count of this data object.
int	data_object_get_size (data_object_t *obj, off_t *size)
	Gets the size of the data object.
int	data_object_compare (int *result, data_object_t *obj1, data_object_t *obj2)
	Compares the data held by two data objects.

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Detailed Description

Implementation of the base data_object_t ADT and interface mechanism.

Definition in file data_object.c.

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Function Documentation

int data_object_create_impl	(	data_object_t **	obj,
		void *	impl,
		struct data_object_funcs *	funcs
	)

Creates a data_object_t using a specific implementation.

This functions is for use by the various data_object_t implementations.

Parameters:

[out]	obj	the created data_object_t
	impl	the implementation private data
	funcs	function pointers to the implementations' functions

Returns:

the operation status code

Definition at line 54 of file data_object.c.

Referenced by data_object_file_new(), and data_object_memory_new().

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