94 lines
2.1 KiB
C
94 lines
2.1 KiB
C
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/*
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* CS 361: Template project driver
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*
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* Name: Nicholas Tamassia
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*/
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#include <assert.h>
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#include <getopt.h>
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#include <inttypes.h>
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#include <pthread.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "mutex.h"
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#include "pingpong.h"
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int cmdline (int, char**, bool*, bool*, size_t *);
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void
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usage (void)
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{
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printf ("Usage: synch option [option...]\n");
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printf (" At least one argument must be passed\n");
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printf (" Options are:\n");
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printf (" -m Execute the runner() threads to demonstrate locks\n");
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printf (" -p N Run pingong() with N iterations to demonstrate "
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"semaphore-based timing\n");
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}
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int
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main (int argc, char **argv)
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{
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bool run_mutex = false;
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bool run_pingpong = false;
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size_t count = 0;
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if (cmdline (argc, argv, &run_mutex, &run_pingpong, &count) < 0)
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{
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usage ();
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return EXIT_FAILURE;
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}
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// Use mutexes for mutual exclusion
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if (run_mutex)
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{
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printf ("Running mutual exclusion test\n");
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int64_t shared = run ();
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printf ("Value of shared: %" PRId64 "\n", shared);
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}
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// Use semaphores to demonstrate signaling
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if (run_pingpong)
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{
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printf ("Running %zd iteration(s) of ping-pong\n", count);
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ping (&count);
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printf ("There should be 0 iterations left: %zd\n", count);
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}
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pthread_exit (NULL);
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}
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/*****************************************************************************
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****************** DO NOT MODIFY FUNCTIONS IN THIS SECTION ******************
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*****************************************************************************/
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int
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cmdline (int argc, char **argv, bool *mutex, bool *pingpong, size_t *count)
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{
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int option;
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while ((option = getopt (argc, argv, "mp:h")) != -1)
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{
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switch (option)
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{
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case 'm': *mutex = true;
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break;
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case 'p': *pingpong = true;
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*count = strtol (optarg, NULL, 10);
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break;
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case 'h': return -1;
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break;
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default: return -1;
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}
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}
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if (!*mutex && !*pingpong)
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{
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printf ("You must pass at least one argument\n");
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return -1;
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}
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return 0;
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}
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