table.h

nachos下线程与同步的实验

#include "synch-sleep.h"

class Table 
{
      public:
             Table(int size); // create a table to hold at most 'size' entries.
             ~Table();  //析构函数 
             
             // allocate a table slot for 'object'.
             // return the table index for the slot or -1 on error.
             int Alloc(void *object);
             
             // return the object from table index 'index' or NULL on error.
             // (assert index is in range).  Leave the table entry allocated
             // and the pointer in place.
             void *Get(int index);
             
             // free a table slot
             void Release(int index);
             
      private:
              Lock *lock; 
              int* L;  //
              int* value;  //value[0..S-1]:each value in the table
              int S;  //the size of table
};