From ec4b0d23f51f11adbe2193dc9800e5be54fd0482 Mon Sep 17 00:00:00 2001
From: Andrej Babic <andrej.babic@psi.ch>
Date: Sat, 20 Jan 2018 14:50:40 +0100
Subject: [PATCH] Write format only if file still open

---
 src/h5_zmq_writer.cpp | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/h5_zmq_writer.cpp b/src/h5_zmq_writer.cpp
index 529fb35..bdfe0b6 100644
--- a/src/h5_zmq_writer.cpp
+++ b/src/h5_zmq_writer.cpp
@@ -45,12 +45,14 @@ void write_h5(WriterManager *manager, RingBuffer *ring_buffer, string output_fil
         manager->written_frame(received_data.first.frame_index);
     }
 
-    #ifdef DEBUG_OUTPUT
-        cout << "[h5_zmq_writer::write] Writing file format." << endl;
-    #endif
-
-    h5_utils::write_format(writer.get_h5_file(), manager->get_parameters());
+    if (writer.is_file_open()) {
+        #ifdef DEBUG_OUTPUT
+            cout << "[h5_zmq_writer::write] Writing file format." << endl;
+        #endif
 
+        h5_utils::write_format(writer.get_h5_file(), manager->get_parameters());
+    }
+    
     #ifdef DEBUG_OUTPUT
         cout << "[h5_zmq_writer::write] Closing file." << endl;
     #endif