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#include <stdio.h>
#include <stdlib.h>
#include "misc.h"
#include "mpconfig.h"
#if 0 // print debugging info
#define DEBUG_printf(args...) printf(args)
#else // don't print debugging info
#define DEBUG_printf(args...) (void)0
#endif
#if MICROPY_MEM_STATS
static int total_bytes_allocated = 0;
static int current_bytes_allocated = 0;
static int peak_bytes_allocated = 0;
#define UPDATE_PEAK() { if (current_bytes_allocated > peak_bytes_allocated) peak_bytes_allocated = current_bytes_allocated; }
#endif
void *m_malloc(int num_bytes) {
if (num_bytes == 0) {
return NULL;
}
void *ptr = malloc(num_bytes);
if (ptr == NULL) {
printf("could not allocate memory, allocating %d bytes\n", num_bytes);
return NULL;
}
#if MICROPY_MEM_STATS
total_bytes_allocated += num_bytes;
current_bytes_allocated += num_bytes;
UPDATE_PEAK();
#endif
DEBUG_printf("malloc %d : %p\n", num_bytes, ptr);
return ptr;
}
void *m_malloc0(int num_bytes) {
if (num_bytes == 0) {
return NULL;
}
void *ptr = calloc(1, num_bytes);
if (ptr == NULL) {
printf("could not allocate memory, allocating %d bytes\n", num_bytes);
return NULL;
}
#if MICROPY_MEM_STATS
total_bytes_allocated += num_bytes;
current_bytes_allocated += num_bytes;
UPDATE_PEAK();
#endif
DEBUG_printf("malloc0 %d : %p\n", num_bytes, ptr);
return ptr;
}
void *m_realloc(void *ptr, int old_num_bytes, int new_num_bytes) {
if (new_num_bytes == 0) {
free(ptr);
return NULL;
}
ptr = realloc(ptr, new_num_bytes);
if (ptr == NULL) {
printf("could not allocate memory, reallocating %d bytes\n", new_num_bytes);
return NULL;
}
#if MICROPY_MEM_STATS
// At first thought, "Total bytes allocated" should only grow,
// after all, it's *total*. But consider for example 2K block
// shrunk to 1K and then grown to 2K again. It's still 2K
// allocated total. If we process only positive increments,
// we'll count 3K.
int diff = new_num_bytes - old_num_bytes;
total_bytes_allocated += diff;
current_bytes_allocated += diff;
UPDATE_PEAK();
#endif
DEBUG_printf("realloc %d, %d : %p\n", old_num_bytes, new_num_bytes, ptr);
return ptr;
}
void m_free(void *ptr, int num_bytes) {
if (ptr != NULL) {
free(ptr);
}
#if MICROPY_MEM_STATS
current_bytes_allocated -= num_bytes;
#endif
DEBUG_printf("free %p, %d\n", ptr, num_bytes);
}
int m_get_total_bytes_allocated(void) {
#if MICROPY_MEM_STATS
return total_bytes_allocated;
#else
return -1;
#endif
}
int m_get_current_bytes_allocated(void) {
#if MICROPY_MEM_STATS
return current_bytes_allocated;
#else
return -1;
#endif
}
int m_get_peak_bytes_allocated(void) {
#if MICROPY_MEM_STATS
return peak_bytes_allocated;
#else
return -1;
#endif
}
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