main.cc

   1 /* -*- Mode: C; indent-tabs-mode: t -*- */
   2
   3 #include "libthreads.h"
   4 #include "common.h"
   5 #include "threads.h"
   6
   7 /* global "model" object */
   8 #include "model.h"
   9 #include "snapshot.h"
  10 #include "snapshot-interface.h"
  11
  12 /*
  13  * Return 1 if found next thread, 0 otherwise
  14  */
  15 static int thread_system_next(void) {
  16         Thread *curr, *next;
  17
  18         curr = thread_current();
  19         if (curr) {
  20                 if (curr->get_state() == THREAD_READY) {
  21                         model->check_current_action();
  22                         model->scheduler->add_thread(curr);
  23                 } else if (curr->get_state() == THREAD_RUNNING)
  24                         /* Stopped while running; i.e., completed */
  25                         curr->complete();
  26                 else
  27                         ASSERT(false);
  28         }
  29         next = model->scheduler->next_thread();
  30         if (next)
  31                 next->set_state(THREAD_RUNNING);
  32         DEBUG("(%d, %d)\n", curr ? curr->get_id() : -1, next ? next->get_id() : -1);
  33         if (!next)
  34                 return 1;
  35         return Thread::swap(model->get_system_context(), next);
  36 }
  37
  38 static void thread_wait_finish(void) {
  39         DBG();
  40
  41         while (!thread_system_next());
  42 }
  43
  44 void real_main() {
  45         thrd_t user_thread;
  46         ucontext_t main_context;
  47
  48         //Create the singleton snapshotStack object
  49         snapshotObject = new snapshotStack();
  50
  51         model = new ModelChecker();
  52
  53         if (getcontext(&main_context))
  54                 return;
  55
  56         model->set_system_context(&main_context);
  57
  58         do {
  59                 /* Start user program */
  60                 model->add_thread(new Thread(&user_thread, &user_main, NULL));
  61
  62                 /* Wait for all threads to complete */
  63                 thread_wait_finish();
  64         } while (model->next_execution());
  65
  66         delete model;
  67
  68         DEBUG("Exiting\n");
  69 }
  70
  71 int main_numargs;
  72 char ** main_args;
  73
  74 /*
  75  * Main system function
  76  */
  77 int main(int numargs, char ** args) {
  78         /* Stash this stuff in case someone wants it eventually */
  79         main_numargs=numargs;
  80         main_args=args;
  81
  82         /* Let's jump in quickly and start running stuff */
  83         initSnapShotLibrary(10000 /*int numbackingpages*/, 1024 /*unsigned int numsnapshots*/, 1024 /*unsigned int nummemoryregions*/ , 1000 /*int numheappages*/, &real_main /*MyFuncPtr entryPoint*/);
  84 }