Changeset 1318 for XIOS/trunk/src/node/field.cpp

Timestamp:

10/26/17 10:23:17 (7 years ago)

Author:

rlacroix

Message:

Fix: Handle end-of-file correctly for files in read mode.

Previously desynchronizations between clients could occur, leading to invalid events being received by the server(s).

File:

• XIOS/trunk/src/node/field.cpp (modified) (6 diffs)

XIOS/trunk/src/node/field.cpp

@@ -38 +38 @@
       , hasTimeInstant(false)
       , hasTimeCentered(false)
+      , wasDataRequestedFromServer(false)
       , wasDataAlreadyReceivedFromServer(false)
       , isEOF(false)
@@ -52 +53 @@
       , hasTimeInstant(false)
       , hasTimeCentered(false)
+      , wasDataRequestedFromServer(false)
       , wasDataAlreadyReceivedFromServer(false)
       , isEOF(false)
@@ -261 +263 @@
     lastDataRequestedFromServer = tsDataRequested;
 
-    if (!isEOF) // No need to send the request if we already know we are at EOF
+    // No need to send the request if we are sure that we are already at EOF
+    if (!isEOF || context->getCalendar()->getCurrentDate() <= dateEOF)
     {
       CEventClient event(getType(), EVENT_ID_READ_DATA);
@@ -277 +280 @@
     else
       serverSourceFilter->signalEndOfStream(tsDataRequested);
+
+    wasDataRequestedFromServer = true;
 
     return !isEOF;
@@ -433 +438 @@
   {
     CContext* context = CContext::getCurrent();
-    int record;
     std::map<int, CArray<double,1> > data;
+    const bool wasEOF = isEOF;
 
     for (int i = 0; i < ranks.size(); i++)
     {
       int rank = ranks[i];
+      int record;
       *buffers[i] >> record;
       isEOF = (record == int(-1));
@@ -457 +463 @@
 
     if (isEOF)
+    {
+      if (!wasEOF)
+        dateEOF = lastDataReceivedFromServer;
+
       serverSourceFilter->signalEndOfStream(lastDataReceivedFromServer);
+    }
     else
       serverSourceFilter->streamDataFromServer(lastDataReceivedFromServer, data);
+  }
+
+  void CField::checkForLateDataFromServer(void)
+  {
+    CContext* context = CContext::getCurrent();
+    const CDate& currentDate = context->getCalendar()->getCurrentDate();
+
+    // Check if data previously requested has been received as expected
+    if (wasDataRequestedFromServer && (!isEOF || context->getCalendar()->getCurrentDate() <= dateEOF))
+    {
+      CTimer timer("CField::checkForLateDataFromServer");
+
+      bool isDataLate = !wasDataAlreadyReceivedFromServer || lastDataReceivedFromServer + file->output_freq < currentDate;
+      while (isDataLate && timer.getCumulatedTime() < CXios::recvFieldTimeout)
+      {
+        timer.resume();
+
+        context->checkBuffersAndListen();
+
+        timer.suspend();
+
+        isDataLate = !wasDataAlreadyReceivedFromServer || lastDataReceivedFromServer + file->output_freq < currentDate;
+      }
+
+      if (isDataLate)
+        ERROR("void CField::checkForLateDataFromServer(void)",
+              << "Late data at timestep = " << currentDate);
+    }
   }