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/**
* @file lv_mem.c
*/
/*********************
* INCLUDES
*********************/
#include "lv_mem_private.h"
#include "lv_string.h"
#include "../misc/lv_assert.h"
#include "../misc/lv_log.h"
#include "../core/lv_global.h"
#if LV_USE_OS == LV_OS_PTHREAD
#include <pthread.h>
#endif
/*********************
* DEFINES
*********************/
/*memset the allocated memories to 0xaa and freed memories to 0xbb (just for testing purposes)*/
#ifndef LV_MEM_ADD_JUNK
#define LV_MEM_ADD_JUNK 0
#endif
#define zero_mem LV_GLOBAL_DEFAULT()->memory_zero
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
void * lv_malloc_core(size_t size);
void * lv_realloc_core(void * p, size_t new_size);
void lv_free_core(void * p);
void lv_mem_monitor_core(lv_mem_monitor_t * mon_p);
lv_result_t lv_mem_test_core(void);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
#if LV_USE_LOG && LV_LOG_TRACE_MEM
#define LV_TRACE_MEM(...) LV_LOG_TRACE(__VA_ARGS__)
#else
#define LV_TRACE_MEM(...)
#endif
/**********************
* GLOBAL FUNCTIONS
**********************/
void * lv_malloc(size_t size)
{
LV_TRACE_MEM("allocating %lu bytes", (unsigned long)size);
if(size == 0) {
LV_TRACE_MEM("using zero_mem");
return &zero_mem;
}
void * alloc = lv_malloc_core(size);
if(alloc == NULL) {
LV_LOG_INFO("couldn't allocate memory (%lu bytes)", (unsigned long)size);
#if LV_LOG_LEVEL <= LV_LOG_LEVEL_INFO
lv_mem_monitor_t mon;
lv_mem_monitor(&mon);
LV_LOG_INFO("used: %zu (%3d %%), frag: %3d %%, biggest free: %zu",
mon.total_size - mon.free_size, mon.used_pct, mon.frag_pct,
mon.free_biggest_size);
#endif
return NULL;
}
#if LV_MEM_ADD_JUNK
lv_memset(alloc, 0xaa, size);
#endif
LV_TRACE_MEM("allocated at %p", alloc);
return alloc;
}
void * lv_malloc_zeroed(size_t size)
{
LV_TRACE_MEM("allocating %lu bytes", (unsigned long)size);
if(size == 0) {
LV_TRACE_MEM("using zero_mem");
return &zero_mem;
}
void * alloc = lv_malloc_core(size);
if(alloc == NULL) {
LV_LOG_INFO("couldn't allocate memory (%lu bytes)", (unsigned long)size);
#if LV_LOG_LEVEL <= LV_LOG_LEVEL_INFO
lv_mem_monitor_t mon;
lv_mem_monitor(&mon);
LV_LOG_INFO("used: %zu (%3d %%), frag: %3d %%, biggest free: %zu",
mon.total_size - mon.free_size, mon.used_pct, mon.frag_pct,
mon.free_biggest_size);
#endif
return NULL;
}
lv_memzero(alloc, size);
LV_TRACE_MEM("allocated at %p", alloc);
return alloc;
}
void lv_free(void * data)
{
LV_TRACE_MEM("freeing %p", data);
if(data == &zero_mem) return;
if(data == NULL) return;
lv_free_core(data);
}
void * lv_realloc(void * data_p, size_t new_size)
{
LV_TRACE_MEM("reallocating %p with %lu size", data_p, (unsigned long)new_size);
if(new_size == 0) {
LV_TRACE_MEM("using zero_mem");
lv_free(data_p);
return &zero_mem;
}
if(data_p == &zero_mem) return lv_malloc(new_size);
void * new_p = lv_realloc_core(data_p, new_size);
if(new_p == NULL) {
LV_LOG_ERROR("couldn't reallocate memory");
return NULL;
}
LV_TRACE_MEM("reallocated at %p", new_p);
return new_p;
}
lv_result_t lv_mem_test(void)
{
if(zero_mem != ZERO_MEM_SENTINEL) {
LV_LOG_WARN("zero_mem is written");
return LV_RESULT_INVALID;
}
return lv_mem_test_core();
}
void lv_mem_monitor(lv_mem_monitor_t * mon_p)
{
lv_memzero(mon_p, sizeof(lv_mem_monitor_t));
lv_mem_monitor_core(mon_p);
}
/**********************
* STATIC FUNCTIONS
**********************/
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