81 lines
1.7 KiB
C
81 lines
1.7 KiB
C
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/*
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File: semaphore.H
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Author: R. Bettati
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Department of Computer Science
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Texas A&M University
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Date : 08/02/11
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*/
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#ifndef _semaphore_H_ // include file only once
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#define _semaphore_H_
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/*--------------------------------------------------------------------------*/
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/* DEFINES */
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/*--------------------------------------------------------------------------*/
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/* -- (none) -- */
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/*--------------------------------------------------------------------------*/
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/* INCLUDES */
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/*--------------------------------------------------------------------------*/
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#include <pthread.h>
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#include <mutex>
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/*--------------------------------------------------------------------------*/
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/* DATA STRUCTURES */
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/*--------------------------------------------------------------------------*/
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/* -- (none) -- */
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/*--------------------------------------------------------------------------*/
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/* FORWARDS */
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/*--------------------------------------------------------------------------*/
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/* -- (none) -- */
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/*--------------------------------------------------------------------------*/
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/* CLASS S e m a p h o r e */
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/*--------------------------------------------------------------------------*/
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class Semaphore {
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private:
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/* -- INTERNAL DATA STRUCTURES
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You may need to change them to fit your implementation. */
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int value;
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pthread_mutex_t m;
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pthread_cond_t c;
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public:
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/* -- CONSTRUCTOR/DESTRUCTOR */
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Semaphore(int _val){value = _val;}
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~Semaphore(){}
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/* -- SEMAPHORE OPERATIONS */
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int P(){
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Lock();
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}
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//;
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int V();
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};
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/*
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class BoundBuffer{
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Semaphore full(n);
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Semaphore empty(n);
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Semaphore mutex(n);
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};
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*/
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#endif
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