* @brief Entry point for the model checker.
*/
+#include <unistd.h>
+
#include "libthreads.h"
#include "common.h"
#include "threads.h"
#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;
+ params->fairwindow = 0;
+ params->enabledcount = 1;
+}
+
+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"
+"-f Specify a fairness window in which actions that are\n"
+" enabled sufficiently many times should receive\n"
+" priority for execution. Default: %d\n"
+"-e Enabled count. Default: %d\n"
+"-- Program arguments follow.\n\n",
+params->maxreads, params->maxfuturedelay, params->fairwindow, params->enabledcount);
+ exit(EXIT_SUCCESS);
+}
+
+static void parse_options(struct model_params *params, int *argc, char ***argv) {
+ const char *shortopts = "hm:s:f:e:";
+ 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 'f':
+ params->fairwindow = atoi(optarg);
+ break;
+ case 'e':
+ params->enabledcount = 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;
char **main_argv;
-/** The real_main function contains the main model checking loop. */
-static void real_main() {
+/** Wrapper to run the user's main function, with appropriate arguments */
+void wrapper_user_main(void *)
+{
+ user_main(main_argc, main_argv);
+}
+
+/** The model_main function contains the main model checking loop. */
+static void model_main() {
thrd_t user_thread;
- ucontext_t main_context;
struct model_params params;
- parse_options(¶ms, main_argc, main_argv);
+ param_defaults(¶ms);
+
+ parse_options(¶ms, &main_argc, &main_argv);
//Initialize race detector
initRaceDetector();
model = new ModelChecker(params);
- if (getcontext(&main_context))
- return;
-
- model->set_system_context(&main_context);
-
snapshotObject->snapshotStep(0);
do {
/* Start user program */
- model->add_thread(new Thread(&user_thread, (void (*)(void *)) &user_main, NULL));
+ model->add_thread(new Thread(&user_thread, &wrapper_user_main, NULL));
/* Wait for all threads to complete */
model->finish_execution();
/**
* Main function. Just initializes snapshotting library and the
- * snapshotting library calls the real_main function.
+ * snapshotting library calls the model_main function.
*/
int main(int argc, char ** argv) {
main_argc = argc;
main_argv = argv;
/* Let's jump in quickly and start running stuff */
- initSnapShotLibrary(10000, 1024, 1024, 1000, &real_main);
+ initSnapshotLibrary(10000, 1024, 1024, 4000, &model_main);
}