main: add "maxreads" parameter

[model-checker.git] / main.cc

diff --git a/main.cc b/main.cc
index f58f3040d98f0afd3240381445b6de93cbf723b6..215a2197d35e91fa29cf65b869a292165be4a9ad 100644 (file)
--- a/main.cc
+++ b/main.cc
@@ -14,30 +14,41 @@
 #include "model.h"
 #include "snapshot-interface.h"
 
+static void param_defaults(struct model_params * params) {
+       params->maxreads = 0;
+}
+
 static void print_usage() {
        printf(
-"Usage: <program name> [OPTIONS]\n"
+"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");
        exit(EXIT_SUCCESS);
 }
 
-static void parse_options(struct model_params *params, int argc, char **argv) {
-       const char *shortopts = "h";
+static void parse_options(struct model_params *params, int *argc, char ***argv) {
+       const char *shortopts = "hm:";
        int opt;
        bool error = false;
-       while (!error && (opt = getopt(argc, argv, shortopts)) != -1) {
+       while (!error && (opt = getopt(*argc, *argv, shortopts)) != -1) {
                switch (opt) {
                case 'h':
                        print_usage();
                        break;
+               case 'm':
+                       params->maxreads = atoi(optarg);
+                       break;
                default: /* '?' */
                        error = true;
                        break;
                }
        }
+       (*argc) -= optind;
+       (*argv) += optind;
+
        if (error)
                print_usage();
 }
@@ -50,7 +61,9 @@ static void real_main() {
        thrd_t user_thread;
        struct model_params params;
 
-       parse_options(&params, main_argc, main_argv);
+       param_defaults(&params);
+
+       parse_options(&params, &main_argc, &main_argv);
 
        //Initialize race detector
        initRaceDetector();