M451 跑uCOSii 出现问题

只看该作者 · 2017-3-6 16:40

自己定义了链表，初始化时malloc了300个单元，每个单元20字节，总共6000个字节。M451有32K内存
为什么我初始化到260个链表节点时出错。
void creatqueue()
{
  UINT16 i = 0;
  WINDOW_INFO *newwindow;
  newwindow = (WINDOW_INFO *)malloc(sizeof(WINDOW_INFO));
  newwindow->windowhd = 1;
  newwindow->prev = NULL;
  newwindow->next = NULL;
  window_unused.first    = newwindow;
  window_unused.last    = newwindow;
  window_unused.window_sum = 1;
  for(i = 2; i <= MAXWINDOW;i++)
  {
queue_addNode(i);
if(i >= 266)
cntd--;//这之后出错了
if(i >= 270)
cntd--;
  }
}

void queue_addNode(int windowhd)
{
  WINDOW_INFO *newwindo,*tempwindow;
  newwindo = (WINDOW_INFO *)malloc(sizeof(WINDOW_INFO));
  newwindo->windowhd = windowhd;

  tempwindow = window_unused.first;
  while(tempwindow != window_unused.last)//查找到最后一个
  {
tempwindow = tempwindow->next;
  }
  window_unused.window_sum++;

  tempwindow->next = newwindo;
  newwindo->prev = tempwindow;
  window_unused.last = newwindow;
}
代码不在操作系统里跑可以的