Expose iteraors for access to the data in checkpoint

- Update example to use std::copy and iterators to write to a file
STEllAR-GROUP · Sep 20, 2017 · 7189f7d · 7189f7d
1 parent ccf8f8d
commit 7189f7d
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diff --git a/hpx/util/checkpoint.hpp b/hpx/util/checkpoint.hpp
@@ -79,6 +79,17 @@ namespace util
                 return false;
             }
         }
+
+        // Expose iterators to access data held by checkpoint
+        using const_iterator = std::vector<char>::const_iterator;
+        const_iterator begin() const
+        {
+            return data.begin();
+        }
+        const_iterator end() const
+        {
+            return data.end();
+        }
 
         void load(std::string file_name)
         {

diff --git a/tests/unit/util/checkpoint.cpp b/tests/unit/util/checkpoint.cpp
@@ -128,7 +128,10 @@ int main()
     std::vector<float> vec7{1.02, 1.03, 1.04, 1.05};
     hpx::future<checkpoint> fut_7=save_checkpoint(vec7);
     checkpoint archive7 = fut_7.get();
-    test_file_7.write(archive7.data.data(),archive7.size());
+    std::copy(
+        archive7.begin()                           // Write data to ofstream
+      , archive7.end()                             // ie. the file
+      , std::ostream_iterator<char>(test_file_7));
     test_file_7.close();
 
     std::vector<float> vec7_1;