2 * @brief Entry point for the model checker.
5 #include "libthreads.h"
9 /* global "model" object */
11 #include "snapshot-interface.h"
13 /** The thread_system_next function takes the next step in the
14 * execution. @return Returns the 1 if there is another step and 0
18 static int thread_system_next(void) {
21 curr = thread_current();
23 if (curr->get_state() == THREAD_READY) {
24 model->check_current_action();
25 model->scheduler->add_thread(curr);
26 } else if (curr->get_state() == THREAD_RUNNING)
27 /* Stopped while running; i.e., completed */
32 next = model->scheduler->next_thread();
34 next->set_state(THREAD_RUNNING);
35 DEBUG("(%d, %d)\n", curr ? curr->get_id() : -1, next ? next->get_id() : -1);
38 return Thread::swap(model->get_system_context(), next);
41 /** The thread_wait_finish method runs the current execution until we
42 * have no more steps to take.
45 static void thread_wait_finish(void) {
48 while (!thread_system_next());
52 /** The real_main function contains the main model checking loop. */
56 ucontext_t main_context;
58 //Create the singleton SnapshotStack object
59 snapshotObject = new SnapshotStack();
61 model = new ModelChecker();
63 if (getcontext(&main_context))
66 model->set_system_context(&main_context);
68 snapshotObject->snapshotStep(0);
71 /* Start user program */
72 model->add_thread(new Thread(&user_thread, (void (*)(void *)) &user_main, NULL));
74 /* Wait for all threads to complete */
76 } while (model->next_execution());
88 * Main function. Just initializes snapshotting library and the
89 * snapshotting library calls the real_main function.
91 int main(int numargs, char ** args) {
92 /* Stash this stuff in case someone wants it eventually */
96 /* Let's jump in quickly and start running stuff */
97 initSnapShotLibrary(10000, 1024, 1024, 1000, &real_main);