libthreads: pass 'class Thread' object as ModelAction 'location'

Currently, the 'location' parameter is unused for THREAD_CREATE. I need to
provide a reference from a Thread object to the ModelAction which created it,
so I will use this parameter as an entry point into the ModelChecker, which can
build the necessary reference later.

diff --git a/libthreads.cc b/libthreads.cc
index e8d3b6e61e78710169d03da5b4d57180a7c388e0..a414686dccb713116bad22a1e6126f590b72cc7b 100644 (file)
--- a/libthreads.cc
+++ b/libthreads.cc
@@ -10,12 +10,14 @@
  */
 int thrd_create(thrd_t *t, thrd_start_t start_routine, void *arg)
 {
+       Thread *thread;
        int ret;
        DBG();
-       ret = model->add_thread(new Thread(t, start_routine, arg));
+       thread = new Thread(t, start_routine, arg);
+       ret = model->add_thread(thread);
        DEBUG("create thread %d\n", id_to_int(thrd_to_id(*t)));
        /* seq_cst is just a 'don't care' parameter */
-       model->switch_to_master(new ModelAction(THREAD_CREATE, memory_order_seq_cst, NULL, VALUE_NONE));
+       model->switch_to_master(new ModelAction(THREAD_CREATE, memory_order_seq_cst, thread, VALUE_NONE));
        return ret;
 }