?? scheduler.h
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// scheduler.h // Data structures for the thread dispatcher and scheduler.// Primarily, the list of threads that are ready to run.//// Copyright (c) 1992-1993 The Regents of the University of California.// All rights reserved. See copyright.h for copyright notice and limitation // of liability and disclaimer of warranty provisions.#ifndef SCHEDULER_H#define SCHEDULER_H#include "copyright.h"#include "list.h"#include "thread.h"// The following class defines the scheduler/dispatcher abstraction -- // the data structures and operations needed to keep track of which // thread is running, and which threads are ready but not running.class Scheduler { public: Scheduler(); // Initialize list of ready threads ~Scheduler(); // De-allocate ready list void ReadyToRun(Thread* thread); // Thread can be dispatched. Thread* FindNextToRun(); // Dequeue first thread on the ready // list, if any, and return thread. void Run(Thread* nextThread); // Cause nextThread to start running void Print(); // Print contents of ready list private: List *readyList; // queue of threads that are ready to run, // but not running};#endif // SCHEDULER_H
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