+static void param_defaults(struct model_params *params)
+{
+ params->maxreads = 0;
+ params->maxfuturedelay = 6;
+ params->fairwindow = 0;
+ params->yieldon = false;
+ params->yieldblock = false;
+ params->sc_trace_analysis = false;
+ params->enabledcount = 1;
+ params->bound = 0;
+ params->maxfuturevalues = 0;
+ params->expireslop = 4;
+ params->verbose = !!DBG_ENABLED();
+ params->uninitvalue = 0;
+}
+
+static void print_usage(const char *program_name, struct model_params *params)
+{
+ /* Reset defaults before printing */
+ param_defaults(params);
+
+ model_print(
+"Copyright (c) 2013 Regents of the University of California. All rights reserved.\n"
+"Distributed under the GPLv2\n"
+"Written by Brian Norris and Brian Demsky\n"
+"\n"
+"Usage: %s [MODEL-CHECKER OPTIONS] -- [PROGRAM ARGS]\n"
+"\n"
+"MODLE-CHECKER OPTIONS can be any of the model-checker options listed below. Arguments\n"
+"provided after the `--' (the PROGRAM ARGS) are passed to the user program.\n"
+"\n"
+"Model-checker options:\n"
+"-h, --help Display this help message and exit\n"
+"-m, --liveness=NUM Maximum times a thread can read from the same write\n"
+" while other writes exist.\n"
+" Default: %d\n"
+"-M, --maxfv=NUM Maximum number of future values that can be sent to\n"
+" the same read.\n"
+" Default: %d\n"
+"-s, --maxfvdelay=NUM Maximum actions that the model checker will wait for\n"
+" a write from the future past the expected number\n"
+" of actions.\n"
+" Default: %d\n"
+"-S, --fvslop=NUM Future value expiration sloppiness.\n"
+" Default: %u\n"
+"-y, --yield Enable CHESS-like yield-based fairness support.\n"
+" Default: %s\n"
+"-Y, --yieldblock Prohibit an execution from running a yield.\n"
+" Default: %s\n"
+"-f, --fairness=WINDOW Specify a fairness window in which actions that are\n"
+" enabled sufficiently many times should receive\n"
+" priority for execution (not recommended).\n"
+" Default: %d\n"
+"-e, --enabled=COUNT Enabled count.\n"
+" Default: %d\n"
+"-b, --bound=MAX Upper length bound.\n"
+" Default: %d\n"
+"-v, --verbose Print verbose execution information.\n"
+"-u, --uninitialized=VALUE Return VALUE any load which may read from an\n"
+" uninitialized atomic.\n"
+" Default: %u\n"
+"-c, --analysis Use SC Trace Analysis.\n"
+" -- Program arguments follow.\n\n",
+ program_name,
+ params->maxreads,
+ params->maxfuturevalues,
+ params->maxfuturedelay,
+ params->expireslop,
+ params->yieldon ? "enabled" : "disabled",
+ params->yieldblock ? "enabled" : "disabled",
+ params->fairwindow,
+ params->enabledcount,
+ params->bound,
+ params->uninitvalue);
+ exit(EXIT_SUCCESS);
+}
+
+static void parse_options(struct model_params *params, int argc, char **argv)
+{
+ const char *shortopts = "hyYcm:M:s:S:f:e:b:u:v::";
+ const struct option longopts[] = {
+ {"help", no_argument, NULL, 'h'},
+ {"liveness", required_argument, NULL, 'm'},
+ {"maxfv", required_argument, NULL, 'M'},
+ {"maxfvdelay", required_argument, NULL, 's'},
+ {"fvslop", required_argument, NULL, 'S'},
+ {"fairness", required_argument, NULL, 'f'},
+ {"yield", no_argument, NULL, 'y'},
+ {"yieldblock", no_argument, NULL, 'Y'},
+ {"enabled", required_argument, NULL, 'e'},
+ {"bound", required_argument, NULL, 'b'},
+ {"verbose", optional_argument, NULL, 'v'},
+ {"uninitialized", optional_argument, NULL, 'u'},
+ {"analysis", optional_argument, NULL, 'c'},
+ {0, 0, 0, 0} /* Terminator */
+ };
+ int opt, longindex;
+ bool error = false;
+ while (!error && (opt = getopt_long(argc, argv, shortopts, longopts, &longindex)) != -1) {
+ switch (opt) {
+ case 'h':
+ print_usage(argv[0], params);
+ break;
+ case 's':
+ params->maxfuturedelay = atoi(optarg);
+ break;
+ case 'S':
+ params->expireslop = atoi(optarg);
+ break;
+ case 'f':
+ params->fairwindow = atoi(optarg);
+ break;
+ case 'e':
+ params->enabledcount = atoi(optarg);
+ break;
+ case 'b':
+ params->bound = atoi(optarg);
+ break;
+ case 'm':
+ params->maxreads = atoi(optarg);
+ break;
+ case 'M':
+ params->maxfuturevalues = atoi(optarg);
+ break;
+ case 'v':
+ params->verbose = optarg ? atoi(optarg) : 1;
+ break;
+ case 'u':
+ params->uninitvalue = atoi(optarg);
+ break;
+ case 'c':
+ params->sc_trace_analysis = true;
+ break;
+ case 'y':
+ params->yieldon = true;
+ break;
+ case 'Y':
+ params->yieldblock = true;
+ break;
+ default: /* '?' */
+ error = true;
+ break;
+ }