From 85fac9c01a7269fe0a879f97155f9c5976672606 Mon Sep 17 00:00:00 2001
From: Brian Demsky <bdemsky@uci.edu>
Date: Wed, 19 Sep 2012 16:38:33 -0700
Subject: [PATCH] more mutex changes

---
 model.cc | 4 ++++
 mutex.cc | 4 +++-
 mutex.h  | 3 +++
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/model.cc b/model.cc
index 651d32d5..6732c265 100644
--- 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 2cf6828a..51315d94 100644
--- 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 a65250b5..828aae53 100644
--- 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 {
-- 
2.34.1