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@@ -1,46 +0,0 @@
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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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@@ -1,30 +0,0 @@
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#ifndef MY_DEFINITIONS_HEADER
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#define MY_DEFINITIONS_HEADER
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/*******************************************************************************
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* File: commonDefs.h
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* Purpose: common definitions
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* Course: bsy
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* Author: M. Thaler, 2011
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* Revision: 5/2012, 7/2013, 4/2014
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* Version: v.fs20
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*******************************************************************************/
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#define MYTURN_SEMAPHOR "/my_semaphor_1_name_simple_seq"
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#define COIN_SEMAPHOR "/my_semaphor_2_name_simple_seq"
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#define COFFEE_SEMAPHOR "/my_semaphor_3_name_simple_seq"
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#define READY_SEMAPHOR "/my_semaphor_4_name_simple_seq"
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#define ITERS (100*1000*1000)
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#define CUSTOMERS 4
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//******************************************************************************
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#define checkSem(X) {if (X == SEM_FAILED) {perror("sem_open"); exit(-1);}}
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#define drinkingCoffee(X) {usleep((((1+X)*rand())+100000)&0xFFFFF);}
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//******************************************************************************
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#endif
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@@ -1,50 +0,0 @@
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/*******************************************************************************
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* File: customer.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/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(int argc, char *argv[]) {
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int i, myID;
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sem_t *myTurn, *coin, *coffee, *ready;
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if (argc > 1)
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myID = atoi(argv[1]);
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else
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myID = 0;
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// set up a semaphore
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myTurn = sem_open(MYTURN_SEMAPHOR, 0);
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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 customer
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printf("Customer starting (%d)\n", myID);
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// now check the sum
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for (i = 0; i < ITERS; i++) {
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printf("\t\t\t\tcustomer(%d) put coin %d\n", myID, i);
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printf("\t\t\t\tcustomer(%d) waiting for coffee %d\n", myID, i);
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printf("\t\t\t\tcustomer(%d) got coffee %d\n", myID, i);
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drinkingCoffee(myID);
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}
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}
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//******************************************************************************
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@@ -1,40 +0,0 @@
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# Author M. Thaler InIT/ZHAW
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# Version v.fs20
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CMP= gcc -std=gnu99
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CMPFLAGS= -Wall -g
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LIB= -pthread
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EXENAME0= startApp.e
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EXENAME1= coffeeTeller.e
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EXENAME2= customer.e
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doit:
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@make --no-print-directory clean
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@make --no-print-directory startApp
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@make --no-print-directory coffeeTeller
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@make --no-print-directory customer
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startApp: startApp.o
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$(CMP) $(CMPFLAGS) startApp.o $(LIB) -o $(EXENAME0)
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coffeeTeller: coffeeTeller.o
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$(CMP) $(CMPFLAGS) coffeeTeller.o $(LIB) -o $(EXENAME1)
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customer: customer.o
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$(CMP) $(CMPFLAGS) customer.o $(LIB) -o $(EXENAME2)
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.c.o:
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$(CMP) -c $(CMPFLAGS) $<
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.cc.o:
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$(CMP) -c $(CMPFLAGS) $<
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all:
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@make clean
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make doit
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clean:
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@rm -f *.e *.o
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purge:
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@make clean
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@@ -1,72 +0,0 @@
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/*******************************************************************************
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* File: startApp.c
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* Purpose: ice cream teller, basic sequence
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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 j;
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char string[8];
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sem_t *myTurn, *coin, *coffee, *ready;
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pid_t tellerPID;
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sem_unlink(MYTURN_SEMAPHOR); // delete seamphor if it still exists
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sem_unlink(COIN_SEMAPHOR); // delete seamphor if it still exists
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sem_unlink(COFFEE_SEMAPHOR); // delete seamphor if it still exists
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sem_unlink(READY_SEMAPHOR); // delete seamphor if it still exists
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// set up a semaphore (? -> initial value of semaphor)
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// checkSem() -> macro defined in commonDefs.h
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/*
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myTurn = sem_open(MYTURN_SEMAPHOR, O_CREAT, 0700, ?); checkSem(myTurn);
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coin = sem_open(COIN_SEMAPHOR, O_CREAT, 0700, ?); checkSem(coin);
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coffee = sem_open(COFFEE_SEMAPHOR, O_CREAT, 0700, ?); checkSem(coffee);
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ready = sem_open(READY_SEMAPHOR, O_CREAT, 0700, ?); checkSem(ready);
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*/
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// now that the resources are set up, the supervisor can be started
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for (j = 1; j <= CUSTOMERS; j++) {
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if (fork() == 0) {
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sprintf(string, "%d", j);
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execl("./customer.e", "customer.e", string, NULL);
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printf("*** could not start customer.e ***\n");
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}
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}
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if ((tellerPID = fork()) == 0) {
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execl("./coffeeTeller.e", "coffeeTeller.e", "0", NULL);
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printf("*** could not start coffeTeller ***\n");
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}
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waitpid(tellerPID, NULL, 0);
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system("killall coffeeTeller.e");
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system("killall customer.e"); // kill all customers
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// clean up resources
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sem_unlink(MYTURN_SEMAPHOR);
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sem_unlink(COIN_SEMAPHOR);
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sem_unlink(COFFEE_SEMAPHOR);
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sem_unlink(READY_SEMAPHOR);
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printf("\n");
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}
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//******************************************************************************
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