2 * @brief Entry point for the model checker.
5 #include "libthreads.h"
11 /* global "model" object */
13 #include "snapshot-interface.h"
15 /** The thread_system_next function takes the next step in the
16 * execution. @return Returns the 1 if there is another step and 0
20 static int thread_system_next(void) {
23 curr = thread_current();
25 if (curr->get_state() == THREAD_READY) {
26 model->check_current_action();
27 model->scheduler->add_thread(curr);
28 } else if (curr->get_state() == THREAD_RUNNING)
29 /* Stopped while running; i.e., completed */
34 next = model->scheduler->next_thread();
36 next->set_state(THREAD_RUNNING);
37 DEBUG("(%d, %d)\n", curr ? curr->get_id() : -1, next ? next->get_id() : -1);
40 return Thread::swap(model->get_system_context(), next);
43 /** The thread_wait_finish method runs the current execution until we
44 * have no more steps to take.
47 static void thread_wait_finish(void) {
50 while (!thread_system_next());
54 /** The real_main function contains the main model checking loop. */
58 ucontext_t main_context;
60 //Initialize race detector
63 //Create the singleton SnapshotStack object
64 snapshotObject = new SnapshotStack();
66 model = new ModelChecker();
68 if (getcontext(&main_context))
71 model->set_system_context(&main_context);
73 snapshotObject->snapshotStep(0);
76 /* Start user program */
77 model->add_thread(new Thread(&user_thread, (void (*)(void *)) &user_main, NULL));
79 /* Wait for all threads to complete */
81 } while (model->next_execution());
92 * Main function. Just initializes snapshotting library and the
93 * snapshotting library calls the real_main function.
95 int main(int numargs, char ** args) {
96 /* Stash this stuff in case someone wants it eventually */
100 /* Let's jump in quickly and start running stuff */
101 initSnapShotLibrary(10000, 1024, 1024, 1000, &real_main);