-#include "libthreads.h"
+/** @file main.cc
+ * @brief Entry point for the model checker.
+ */
+
+#include <unistd.h>
+
+#include <threads.h>
#include "common.h"
-#include "threads.h"
+#include "threads-model.h"
+
+#include "datarace.h"
/* global "model" object */
#include "model.h"
-#include "snapshot.h"
+#include "snapshot-interface.h"
-/*
- * Return 1 if found next thread, 0 otherwise
- */
-int num;
-int num1;
-int num2;
-
-static int thread_system_next(void) {
- Thread *curr, *next;
-
- curr = thread_current();
- if (curr) {
- if (curr->get_state() == THREAD_READY) {
- model->check_current_action();
- model->scheduler->add_thread(curr);
- } else if (curr->get_state() == THREAD_RUNNING)
- /* Stopped while running; i.e., completed */
- curr->complete();
- else
- ASSERT(false);
- }
- next = model->scheduler->next_thread();
- if (next)
- next->set_state(THREAD_RUNNING);
- DEBUG("(%d, %d)\n", curr ? curr->get_id() : -1, next ? next->get_id() : -1);
- if (!next)
- return 1;
- return Thread::swap(model->get_system_context(), next);
+static void param_defaults(struct model_params * params) {
+ params->maxreads = 0;
+ params->maxfuturedelay = 100;
+ params->fairwindow = 0;
+ params->enabledcount = 1;
+ params->bound = 0;
}
-static void thread_wait_finish(void) {
- DBG();
+static void print_usage(struct model_params *params) {
+ /* Reset defaults before printing */
+ param_defaults(params);
- while (!thread_system_next());
+ 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"
+"-b Upper length bound. Default: %d\n"
+"-- Program arguments follow.\n\n",
+params->maxreads, params->maxfuturedelay, params->fairwindow, params->enabledcount, params->bound);
+ exit(EXIT_SUCCESS);
}
-void real_main() {
- thrd_t user_thread;
- ucontext_t main_context;
-
- model = new ModelChecker();
-
- if (getcontext(&main_context))
- return;
-
- model->set_system_context(&main_context);
-
- do {
- /* Start user program */
- model->add_thread(new Thread(&user_thread, &user_main, NULL));
-
- /* Wait for all threads to complete */
- thread_wait_finish();
- } while (model->next_execution());
-
- delete model;
-
- DEBUG("Exiting\n");
+static void parse_options(struct model_params *params, int *argc, char ***argv) {
+ const char *shortopts = "hm:s:f:e:b:";
+ 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 'b':
+ params->bound = 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_numargs;
-char ** main_args;
+int main_argc;
+char **main_argv;
+
+/** 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;
+ struct model_params params;
+
+ param_defaults(¶ms);
+
+ parse_options(¶ms, &main_argc, &main_argv);
+
+ //Initialize race detector
+ initRaceDetector();
+
+ //Create the singleton SnapshotStack object
+ snapshotObject = new SnapshotStack();
+
+ model = new ModelChecker(params);
+
+ snapshotObject->snapshotStep(0);
+ do {
+ /* Start user program */
+ model->add_thread(new Thread(&user_thread, &wrapper_user_main, NULL));
+
+ /* Wait for all threads to complete */
+ model->finish_execution();
+ } while (model->next_execution());
+
+ delete model;
+
+ DEBUG("Exiting\n");
+}
-/*
- * Main system function
+/**
+ * Main function. Just initializes snapshotting library and the
+ * snapshotting library calls the model_main function.
*/
-int main(int numargs, char ** args) {
- /* Stash this stuff in case someone wants it eventually */
- main_numargs=numargs;
- main_args=args;
+int main(int argc, char ** argv) {
+ main_argc = argc;
+ main_argv = argv;
- /* Let's jump in quickly and start running stuff */
- initSnapShotLibrary(10000 /*int numbackingpages*/, 1024 /*unsigned int numsnapshots*/, 1024 /*unsigned int nummemoryregions*/ , 1000 /*int numheappages*/, &real_main /*MyFuncPtr entryPoint*/);
+ /* Let's jump in quickly and start running stuff */
+ initSnapshotLibrary(10000, 1024, 1024, 4000, &model_main);
}
projects / c11tester.git / blobdiff