Avoid flush_immediately for Span operations

Author: franzpoeschel

include/openPMD/RecordComponent.hpp

@@ -482,7 +482,8 @@ class RecordComponent
     void storeChunk_impl(
         auxiliary::WriteBuffer buffer,
         Datatype datatype,
-        internal::LoadStoreConfigWithBuffer);
+        internal::LoadStoreConfigWithBuffer,
+        std::optional<bool> flush_immediately = std::nullopt);
 
     template <typename T>
     DynamicMemoryView<T> storeChunkSpan_impl(internal::LoadStoreConfig);

include/openPMD/RecordComponent.tpp

@@ -160,7 +160,8 @@ inline DynamicMemoryView<T> RecordComponent::storeChunkSpanCreateBuffer_impl(
             storeChunk_impl(
                 auxiliary::WriteBuffer(std::move(data)),
                 getBufferView.dtype,
-                std::move(ls_cfg));
+                std::move(ls_cfg),
+                /*flush_immediately=*/false);
         }
         // storeChunk(std::move(data), std::move(o), std::move(e));
     }

src/RecordComponent.cpp

@@ -702,7 +702,8 @@ void RecordComponent::readBase()
 void RecordComponent::storeChunk_impl(
     auxiliary::WriteBuffer buffer,
     Datatype dtype,
-    internal::LoadStoreConfigWithBuffer cfg)
+    internal::LoadStoreConfigWithBuffer cfg,
+    std::optional<bool> flush_immediately)
 {
     auto [o, e, memorySelection] = std::move(cfg);
     verifyChunk(dtype, o, e);
@@ -715,7 +716,7 @@ void RecordComponent::storeChunk_impl(
     /* std::static_pointer_cast correctly reference-counts the pointer */
     dWrite.data = std::move(buffer);
     auto &rc = get();
-    rc.push_chunk(IOTask(this, std::move(dWrite)));
+    rc.push_chunk(IOTask(this, std::move(dWrite)), flush_immediately);
 }
 
 void RecordComponent::verifyChunk(