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lv_mem_free: periodically peform full defrag

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This commit is contained in:
Gabor Kiss-Vamosi 2020-04-14 10:56:40 +02:00
parent 9ad1e31521
commit 6563f2fa0d
1 changed files with 30 additions and 16 deletions
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46
src/lv_misc/lv_mem.c
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@ -28,6 +28,10 @@
#define LV_MEM_ADD_JUNK 1 #define LV_MEM_ADD_JUNK 1
#endif #endif
#ifndef LV_MEM_FULL_DEFRAG_CNT
#define LV_MEM_FULL_DEFRAG_CNT 16
#endif
#ifdef LV_ARCH_64 #ifdef LV_ARCH_64
#define MEM_UNIT uint64_t #define MEM_UNIT uint64_t
#else #else
@ -156,6 +160,7 @@ void * lv_mem_alloc(size_t size)
#endif #endif
void * alloc = NULL; void * alloc = NULL;
printf("alloc: %d\n", size);
#if LV_MEM_CUSTOM == 0 #if LV_MEM_CUSTOM == 0
/*Use the built-in allocators*/ /*Use the built-in allocators*/
lv_mem_ent_t * e = NULL; lv_mem_ent_t * e = NULL;
@ -218,20 +223,30 @@ void lv_mem_free(const void * data)
#if LV_MEM_CUSTOM == 0 #if LV_MEM_CUSTOM == 0
#if LV_MEM_AUTO_DEFRAG #if LV_MEM_AUTO_DEFRAG
/* Make a simple defrag. static uint16_t full_defrag_cnt = 0;
* Join the following free entries after this*/ full_defrag_cnt++;
lv_mem_ent_t * e_next; if(full_defrag_cnt < LV_MEM_FULL_DEFRAG_CNT) {
e_next = ent_get_next(e); /* Make a simple defrag.
while(e_next != NULL) { * Join the following free entries after this*/
if(e_next->header.s.used == 0) { lv_mem_ent_t * e_next;
e->header.s.d_size += e_next->header.s.d_size + sizeof(e->header); e_next = ent_get_next(e);
while(e_next != NULL) {
if(e_next->header.s.used == 0) {
e->header.s.d_size += e_next->header.s.d_size + sizeof(e->header);
}
else {
break;
}
e_next = ent_get_next(e_next);
} }
else { } else {
break; full_defrag_cnt = 0;
} lv_mem_defrag();
e_next = ent_get_next(e_next);
} }
#endif
#endif /*LV_MEM_AUTO_DEFRAG*/
#else /*Use custom, user defined free function*/ #else /*Use custom, user defined free function*/
#if LV_ENABLE_GC == 0 #if LV_ENABLE_GC == 0
LV_MEM_CUSTOM_FREE(e); LV_MEM_CUSTOM_FREE(e);
@ -771,13 +786,12 @@ static lv_mem_ent_t * ent_get_next(lv_mem_ent_t * act_e)
static void * ent_alloc(lv_mem_ent_t * e, size_t size) static void * ent_alloc(lv_mem_ent_t * e, size_t size)
{ {
void * alloc = NULL; void * alloc = NULL;
printf("%s, size:%d\n", e->header.s.used == 0 ? "free" : "used", e->header.s.d_size);
/*If the memory is free and big enough then use it */ /*If the memory is free and big enough then use it */
if(e->header.s.used == 0 && e->header.s.d_size >= size) { if(e->header.s.used == 0 && e->header.s.d_size >= size) {
/*Truncate the entry to the desired size */ /*Truncate the entry to the desired size */
ent_trunc(e, size), ent_trunc(e, size);
e->header.s.used = 1;
e->header.s.used = 1;
/*Save the allocated data*/ /*Save the allocated data*/
alloc = &e->first_data; alloc = &e->first_data;