add original source

source/listing_6.12.cpp

@@ -0,0 +1,20 @@
+std::map<Key,Value> threadsafe_lookup_table::get_map() const
+{
+    std::vector<std::unique_lock<boost::shared_mutex> > locks;
+    for(unsigned i=0;i<buckets.size();++i)
+    {
+        locks.push_back(
+            std::unique_lock<boost::shared_mutex>(buckets[i].mutex));
+    }
+    std::map<Key,Value> res;
+    for(unsigned i=0;i<buckets.size();++i)
+    {
+        for(bucket_iterator it=buckets[i].data.begin();
+            it!=buckets[i].data.end();
+            ++it)
+        {
+            res.insert(*it);
+        }
+    }
+    return res;
+}