userprog: move to 'test/' directory

[model-checker.git] / main.cc

diff --git a/main.cc b/main.cc
index 958a4451594569b3e77d72e942ba200ad52891b3..73b3b0c410d95fbdbd06190eadd35b25b1288e77 100644 (file)
--- a/main.cc
+++ b/main.cc
@@ -1,14 +1,20 @@
+/** @file main.cc
+ *  @brief Entry point for the model checker.
+ */
+
 #include "libthreads.h"
 #include "common.h"
 #include "threads.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
+/**
+ * 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;
@@ -25,6 +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);
@@ -33,16 +41,24 @@ static int thread_system_next(void) {
        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());
 }
 
-void real_main() {
+
+/** The real_main function contains the main model checking loop. */
+static void real_main() {
        thrd_t user_thread;
        ucontext_t main_context;
 
+       //Initialize race detector
+       initRaceDetector();
+
        //Create the singleton SnapshotStack object
        snapshotObject = new SnapshotStack();
 
@@ -54,7 +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));
@@ -71,8 +86,9 @@ void real_main() {
 int main_numargs;
 char ** main_args;
 
-/*
- * Main system function
+/**
+ * Main function.  Just initializes snapshotting library and the
+ * snapshotting library calls the real_main function.
  */
 int main(int numargs, char ** args) {
        /* Stash this stuff in case someone wants it eventually */