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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <semaphore.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <fcntl.h>
#include <assert.h>
#include "semconfig.h"
sem_t *mysem = NULL, *mycnt = NULL;
pid_t child;
int main(int argc, char **argv) {
int semval = 10;
if (argc == 2) {
semval = atoi(argv[1]);
}
if ( (mysem = sem_open(TESTSEM, O_CREAT, S_IRUSR | S_IWUSR, 0)) != NULL &&
(mycnt = sem_open(CNTSEM, O_CREAT, S_IRUSR | S_IWUSR, semval)) != NULL ) {
while (semval-- >= 0) {
usleep(250);
printf("producer: +1");
assert( sem_post(mysem) == 0 );
printf("remaining: %d\n", semval);
}
assert( sem_close(mysem) == 0 && sem_close(mycnt) == 0 );
} else {
exit(1);
}
exit(0);
}
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