Commit ef18102b authored by Paul Sokolovsky's avatar Paul Sokolovsky
Browse files

Make it possible to turn off collecting memory stats (MICROPY_MEM_STATS).

parent 780f555b
// This file contains default configuration settings for MicroPython.
// You can override any of these options in mpconfig.h for your port.
// Whether to collect memory allocation stats
#ifndef MICROPY_MEM_STATS
#define MICROPY_MEM_STATS (1)
#endif
......@@ -2,12 +2,16 @@
#include <stdlib.h>
#include "misc.h"
#include "mpconfig.h"
#include "defaultconfig.h"
#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) {
......@@ -18,9 +22,11 @@ void *m_malloc(int num_bytes) {
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
return ptr;
}
......@@ -33,9 +39,11 @@ void *m_malloc0(int num_bytes) {
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
return ptr;
}
......@@ -49,6 +57,7 @@ void *m_realloc(void *ptr, int old_num_bytes, int new_num_bytes) {
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
......@@ -58,6 +67,7 @@ void *m_realloc(void *ptr, int old_num_bytes, int new_num_bytes) {
total_bytes_allocated += diff;
current_bytes_allocated += diff;
UPDATE_PEAK();
#endif
return ptr;
}
......@@ -65,17 +75,31 @@ void m_free(void *ptr, int num_bytes) {
if (ptr != NULL) {
free(ptr);
}
#if MICROPY_MEM_STATS
current_bytes_allocated -= num_bytes;
#endif
}
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
}
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment