userprog: move to 'test/' directory

[model-checker.git] / main.cc

diff --git a/main.cc b/main.cc
index 19f12f182494685d718a963b23ee01d3ef3ffcb0..73b3b0c410d95fbdbd06190eadd35b25b1288e77 100644 (file)
--- a/main.cc
+++ b/main.cc
@@ -12,11 +12,10 @@
 #include "model.h"
 #include "snapshot-interface.h"
 
-/** The thread_system_next function takes the next step in the
- *  execution.  @return Returns the 1 if there is another step and 0
- *  otherwise.
+/**
+ * The thread_system_next function takes the next step in the execution.
+ * @return Returns the 1 if there is another step and 0 otherwise.
  */
-
 static int thread_system_next(void) {
        Thread *curr, *next;
 
@@ -32,6 +31,8 @@ static int thread_system_next(void) {
                        ASSERT(false);
        }
        next = model->scheduler->next_thread();
+       if (!model->isfeasible())
+               return 1;
        if (next)
                next->set_state(THREAD_RUNNING);
        DEBUG("(%d, %d)\n", curr ? curr->get_id() : -1, next ? next->get_id() : -1);
@@ -43,7 +44,6 @@ static int thread_system_next(void) {
 /** The thread_wait_finish method runs the current execution until we
  *  have no more steps to take.
  */
-
 static void thread_wait_finish(void) {
        DBG();
 
@@ -52,8 +52,7 @@ static void thread_wait_finish(void) {
 
 
 /** The real_main function contains the main model checking loop. */
-
-void real_main() {
+static void real_main() {
        thrd_t user_thread;
        ucontext_t main_context;
 
@@ -71,7 +70,6 @@ void real_main() {
        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));