47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
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/*******************************************************************************
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* File: coffeTeller.c
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* Purpose: simple sequence with semaphores
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* Course: bsy
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* Author: M. Thaler, 2011
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* Revision: 5/2012, 7/2013
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* Version: v.fs20
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*******************************************************************************/
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <sys/mman.h>
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#include <fcntl.h>
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#include <semaphore.h>
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#include "commonDefs.h"
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//******************************************************************************
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int main(void) {
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int i;
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sem_t *coin, *coffee, *ready;
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// set up a semaphore
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coin = sem_open(COIN_SEMAPHOR, 0);
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coffee = sem_open(COFFEE_SEMAPHOR, 0);
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ready = sem_open(READY_SEMAPHOR, 0);
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// start teller machine
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printf("\nCoffee teller machine starting\n\n");
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i = 0;
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while (i < ITERS) {
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printf("teller (%d): waiting for coin\n", i);
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printf(" (%d): got coin\n", i);
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printf(" (%d): dispense coffee\n", i);
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i++;
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}
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}
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//******************************************************************************
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