// 队列尺寸

#define Max_Count 4096
#define High_Index 4095 // = Max_Count - 1


// 变量

void* List[Max_Count];
unsigned long Push_Count;
unsigned long Push_Index;
unsigned long Pop_Count;
unsigned long Pop_Index;

// 初始化队列

void InitQueue()
{
   Push_Count = 0;
   Push_Index = 0;
   Pop_Count = 0;
   Pop_Index = 0;
   memset(List, 0, sizeof(List));
}

// 加入

bool Push(void* AData)
{
   if (Push_Count - Pop_Count < Max_Count)
   {
      List[Push_Index] = AData;
      Push_Count++;
      if (Push_Index == High_Index)
         Push_Index = 0;
      else
         Push_Index++;

      return true;
   }
   else
      return false;
}

// 取出

void* Pop()
{
   // 初始化

   void* result = NULL;

   // 判断是否为空

   if (Push_Count != Pop_Count)
   {
      result = List[Pop_Index];
      Pop_Count++;
      if (Pop_Index == High_Index)
         Pop_Index = 0;
      else
         Pop_Index++;
   }

   // 返回结果

   return result;
}