lvgl/lv_misc/lv_mem.h

/**
 * @file lv_mem.h
 *
 */

#ifndef LV_MEM_H
#define LV_MEM_H

#ifdef __cplusplus
extern "C" {
#endif


/*********************
 *      INCLUDES
 *********************/
#include "misc_conf.h"

#include <stdint.h>
#include <stddef.h>


/*********************
 *      DEFINES
 *********************/

/**********************
 *      TYPEDEFS
 **********************/

typedef struct
{
    uint32_t cnt_free;
    uint32_t cnt_used;
    uint32_t size_free;
    uint32_t size_total;
    uint32_t size_free_big;
    uint8_t pct_frag;
    uint8_t pct_used;
}dm_mon_t;


/**********************
 * GLOBAL PROTOTYPES
 **********************/


/**
 * Initiaize the dyn_mem module (work memory and other variables)
 */
void lv_mem_init(void);

/**
 * Allocate a memory dynamically
 * @param size size of the memory to allocate in bytes
 * @return pointer to the allocated memory
 */
void * lv_mem_alloc(uint32_t size);

/**
 * Free an allocated data
 * @param data pointer to an allocated memory
 */
void lv_mem_free(const void * data);

/**
 * Reallocate a memory with a new size. The old content will be kept.
 * @param data pointer to an allocated memory.
 * Its content will be copied to the new memory block and freed
 * @param new_size the desired new size in byte
 * @return pointer to the new memory
 */
void * lv_mem_realloc(void * data_p, uint32_t new_size);

/**
 * Join the adjacent free memory blocks
 */
void lv_mem_defrag(void);

/**
 * Give information about the work memory of dynamic allocation
 * @param mon_p pointer to a dm_mon_p variable,
 *              the result of the analysis will be stored here
 */
void lv_mem_monitor(dm_mon_t * mon_p);

/**
 * Give the size of an allocated memory
 * @param data pointer to an allocated memory
 * @return the size of data memory in bytes
 */
uint32_t dm_get_size(void * data);

/**********************
 *      MACROS
 **********************/

#define dm_assert(p) {if(p == NULL) {while(1);}}

#ifdef __cplusplus
} /* extern "C" */
#endif

#endif /*LV_MEM_H*/