deal with looping due to bogus future value via promise expiration

[model-checker.git] / main.cc

diff --git a/main.cc b/main.cc
index 215a2197d35e91fa29cf65b869a292165be4a9ad..b58599df76681bdae923157b84d47f16a42681e1 100644 (file)
--- a/main.cc
+++ b/main.cc
@@ -16,27 +16,32 @@
 
 static void param_defaults(struct model_params * params) {
        params->maxreads = 0;
+  params->maxfuturedelay = 100;
 }
 
-static void print_usage() {
+static void print_usage(struct model_params *params) {
        printf(
 "Usage: <program name> [MC_OPTIONS] -- [PROGRAM ARGUMENTS]\n"
 "\n"
 "Options:\n"
 "-h                    Display this help message and exit\n"
-"-m                    Maximum times a thread can read from the same write while other writes exist\n"
-"--                    Program arguments follow.\n\n");
+"-m                    Maximum times a thread can read from the same write while other writes exist. Default: %d\n"
+"-s                    Maximum actions that the model checker will wait for a write from the future past the expected number of actions.  Default: %d\n"
+"--                    Program arguments follow.\n\n", params->maxreads, params->maxfuturedelay);
        exit(EXIT_SUCCESS);
 }
 
 static void parse_options(struct model_params *params, int *argc, char ***argv) {
-       const char *shortopts = "hm:";
+       const char *shortopts = "hm:s:";
        int opt;
        bool error = false;
        while (!error && (opt = getopt(*argc, *argv, shortopts)) != -1) {
                switch (opt) {
                case 'h':
-                       print_usage();
+                       print_usage(params);
+                       break;
+               case 's':
+                       params->maxfuturedelay = atoi(optarg);
                        break;
                case 'm':
                        params->maxreads = atoi(optarg);
@@ -50,7 +55,7 @@ static void parse_options(struct model_params *params, int *argc, char ***argv)
        (*argv) += optind;
 
        if (error)
-               print_usage();
+               print_usage(params);
 }
 
 int main_argc;