lv_mem.h
Typedefs
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typedef void *lv_mem_pool_t
Functions
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void lv_mem_init(void)
Initialize to use malloc/free/realloc etc
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void lv_mem_deinit(void)
Drop all dynamically allocated memory and reset the memory pools' state
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lv_mem_pool_t lv_mem_add_pool(void *mem, size_t bytes)
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void lv_mem_remove_pool(lv_mem_pool_t pool)
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void *lv_malloc(size_t size)
Allocate memory dynamically
- Parameters:
size – requested size in bytes
- Returns:
pointer to allocated uninitialized memory, or NULL on failure
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void *lv_calloc(size_t num, size_t size)
Allocate a block of zeroed memory dynamically
- Parameters:
num – requested number of element to be allocated.
size – requested size of each element in bytes.
- Returns:
pointer to allocated zeroed memory, or NULL on failure
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void *lv_zalloc(size_t size)
Allocate zeroed memory dynamically
- Parameters:
size – requested size in bytes
- Returns:
pointer to allocated zeroed memory, or NULL on failure
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void *lv_malloc_zeroed(size_t size)
Allocate zeroed memory dynamically
- Parameters:
size – requested size in bytes
- Returns:
pointer to allocated zeroed memory, or NULL on failure
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void lv_free(void *data)
Free an allocated data
- Parameters:
data – pointer to an allocated memory
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void *lv_realloc(void *data_p, size_t new_size)
Reallocate a memory with a new size. The old content will be kept.
- Parameters:
data_p – pointer to an allocated memory. Its content will be copied to the new memory block and freed
new_size – the desired new size in byte
- Returns:
pointer to the new memory, NULL on failure
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void *lv_malloc_core(size_t size)
Used internally to execute a plain
mallocoperation- Parameters:
size – size in bytes to
malloc
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void lv_free_core(void *p)
Used internally to execute a plain
freeoperation- Parameters:
p – memory address to free
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void *lv_realloc_core(void *p, size_t new_size)
Used internally to execute a plain realloc operation
- Parameters:
p – memory address to realloc
new_size – size in bytes to realloc
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void lv_mem_monitor_core(lv_mem_monitor_t *mon_p)
Used internally by lv_mem_monitor() to gather LVGL heap state information.
- Parameters:
mon_p – pointer to lv_mem_monitor_t object to be populated.
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lv_result_t lv_mem_test_core(void)
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lv_result_t lv_mem_test(void)
Tests the memory allocation system by allocating and freeing a block of memory.
- Returns:
LV_RESULT_OK if the memory allocation system is working properly, or LV_RESULT_INVALID if there is an error.
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void lv_mem_monitor(lv_mem_monitor_t *mon_p)
Give information about the work memory of dynamic allocation
- Parameters:
mon_p – pointer to a lv_mem_monitor_t variable, the result of the analysis will be stored here
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struct lv_mem_monitor_t
- #include <lv_mem.h>
Heap information structure.