os/src/malloc.c


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#include <reent.h>
#include <malloc.h>
#include <osdebug.h>

static xSemaphoreHandle malloc_sem = NULL;

__attribute__((constructor)) static void malloc_init() {
    malloc_sem = xSemaphoreCreateMutex();
}

void * malloc(size_t size) {
    void * ptr;
    
    if (malloc_sem)
        xSemaphoreTake(malloc_sem, portMAX_DELAY);
    ptr =_malloc_r(_impure_ptr, size);
    if (malloc_sem)
        xSemaphoreGive(malloc_sem);
}