X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;ds=sidebyside;f=main.cc;h=31184fc559e6a6dc524f47bd58e60f8c7920c21e;hb=cdf3ae3d7205018a412f75addf4113587a1a0586;hp=75efafed43870f8be079fc8fcb1cb49bd8412706;hpb=3519c47202090f3c4a69de0e89aaa2617b17ff75;p=model-checker.git

diff --git a/main.cc b/main.cc
index 75efafe..31184fc 100644
--- a/main.cc
+++ b/main.cc
@@ -2,6 +2,8 @@
  *  @brief Entry point for the model checker.
  */
 
+#include <unistd.h>
+
 #include "libthreads.h"
 #include "common.h"
 #include "threads.h"
@@ -12,7 +14,52 @@
 #include "model.h"
 #include "snapshot-interface.h"
 
-static void parse_options(struct model_params *params, int argc, char **argv) {
+static void param_defaults(struct model_params * params) {
+	params->maxreads = 0;
+	params->maxfuturedelay = 100;
+}
+
+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\n"
+"                      while other writes exist. Default: %d\n"
+"-s                    Maximum actions that the model checker will wait for\n"
+"                      a write from the future past the expected number of\n"
+"                      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:s:";
+	int opt;
+	bool error = false;
+	while (!error && (opt = getopt(*argc, *argv, shortopts)) != -1) {
+		switch (opt) {
+		case 'h':
+			print_usage(params);
+			break;
+		case 's':
+			params->maxfuturedelay = atoi(optarg);
+			break;
+		case 'm':
+			params->maxreads = atoi(optarg);
+			break;
+		default: /* '?' */
+			error = true;
+			break;
+		}
+	}
+	(*argc) -= optind;
+	(*argv) += optind;
+
+	if (error)
+		print_usage(params);
 }
 
 int main_argc;
@@ -23,7 +70,9 @@ 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();