first working threaded implementation of adt_checking

Assignment_3/lib/SimpleLockingStack.cpp

@@ -0,0 +1,26 @@
+#include "SimpleLockingStack.h"
+#include "ADT_Stack.h"
+
+SimpleLockingStack::SimpleLockingStack(ADTOperationQueue * queue) : Stack(queue) { }
+
+void SimpleLockingStack::push(int element) { 
+    mut.lock();
+    vec.push_back(element);
+    op_queue->enqueue(create_operation(methodname::push, element));
+    mut.unlock();
+}
+int SimpleLockingStack::pop() {
+    mut.lock();
+    int e = vec.back();
+    vec.pop_back();
+    op_queue->enqueue(create_operation(methodname::pop, e));
+    mut.unlock();
+    return e;
+}
+int SimpleLockingStack::size() { 
+    mut.lock();
+    int s = vec.size();
+    op_queue->enqueue(create_operation(methodname::size, s));
+    mut.unlock();
+    return s;    
+}