more mutex changes

diff --git a/model.cc b/model.cc
index 651d32d..6732c26 100644 (file)
--- a/model.cc
+++ b/model.cc
@@ -337,6 +337,10 @@ void ModelChecker::process_mutex(ModelAction *curr) {
        }
                //otherwise fall into the lock case
        case ATOMIC_LOCK: {
+               if (curr->get_cv()->getClock(state->alloc_tid)<=state->alloc_clock) {
+                       printf("Lock access before initialization\n");
+                       set_assert();
+               }
                state->islocked=true;
                ModelAction *unlock=get_last_unlock(curr);
                //synchronize with the previous unlock statement

diff --git a/mutex.cc b/mutex.cc
index 2cf6828..51315d9 100644 (file)
--- a/mutex.cc
+++ b/mutex.cc
@@ -1,10 +1,12 @@
 #include "mutex.h"
 #include "model.h"
 
-
 namespace std {
 mutex::mutex() {
        state.islocked=false;
+       thread_id_t tid=thread_current()->get_id();
+       state.alloc_tid=tid;
+       state.alloc_clock=model->get_cv(tid)->getClock(tid);
 }
        
 void mutex::lock() {

diff --git a/mutex.h b/mutex.h
index a65250b..828aae5 100644 (file)
--- a/mutex.h
+++ b/mutex.h
@@ -1,10 +1,13 @@
 #ifndef MUTEX_H
 #define MUTEX_H
 #include "threads.h"
+#include "clockvector.h"
 
 namespace std {
        struct mutex_state {
                bool islocked;
+               thread_id_t alloc_tid;
+               modelclock_t alloc_clock;
        };
 
        class mutex {