#include "FreeRTOS.h"

#include "semphr.h"

SemaphoreHandle_t malloc_mutex = NULL;

void __malloc_lock(struct _reent *r) {
  // if the mutex is not initialized yet, no task have been started either
  if (malloc_mutex != NULL) {
    xSemaphoreTakeRecursive(malloc_mutex, portMAX_DELAY);
  }
}

void __malloc_unlock(struct _reent *r) {
  // if the mutex is not initialized yet, no task have been started either
  if (malloc_mutex != NULL) {
    xSemaphoreGiveRecursive(malloc_mutex);
  }
}