action: utilize release sequence(s) for synchronization

[model-checker.git] / main.cc

diff --git a/main.cc b/main.cc
index 9a6c2d8fcadd5e9127a56082f48a682ce0d803c3..75efafed43870f8be079fc8fcb1cb49bd8412706 100644 (file)
--- a/main.cc
+++ b/main.cc
@@ -12,52 +12,6 @@
 #include "model.h"
 #include "snapshot-interface.h"
 
-/**
- * The thread_system_next function takes the next step in the execution, if
- * possible.
- * @return Returns 0 (success) if there is another step and non-zero otherwise.
- */
-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();
-
-       /* Infeasible -> don't take any more steps */
-       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);
-
-       /* next == NULL -> don't take any more steps */
-       if (!next)
-               return 1;
-       /* Return non-zero only if swap fails with an error */
-       return Thread::swap(model->get_system_context(), next);
-}
-
-/** The thread_wait_finish method runs the current execution until we
- *  have no more steps to take.
- */
-static void thread_wait_finish(void) {
-       DBG();
-
-       while (!thread_system_next());
-}
-
 static void parse_options(struct model_params *params, int argc, char **argv) {
 }
 
@@ -67,7 +21,6 @@ char **main_argv;
 /** The real_main function contains the main model checking loop. */
 static void real_main() {
        thrd_t user_thread;
-       ucontext_t main_context;
        struct model_params params;
 
        parse_options(&params, main_argc, main_argv);
@@ -80,18 +33,13 @@ static void real_main() {
 
        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));
 
                /* Wait for all threads to complete */
-               thread_wait_finish();
+               model->finish_execution();
        } while (model->next_execution());
 
        delete model;