Creating and using Ema objects

marketdata

I have written a linux C++ client which consumes EMA objects streamed from a Reuters feed, this all works fine. However, I am having trouble creating EMA objects.

The code below fails with:

memory access violation at address: 0x000004c9: no mapping at fault address

I must be missing something obvious. Any ideas on what that might be?

FieldList fields;
fields.addInt (1, 100)
      .addInt (2, 200)
      .complete ();
while (fields.forth ())
{ }

moragodkrit.chumsri_1

@marketdata

This should be the restriction of EMA C++ mentioned in section 3.2.3 Data Class from EMA Developer Guide. Below is information from Deve Guide

The EMA does not support immediately retrieving data from freshly created OMM containers or messages. The following code
snippet demonstrates this restriction:

FieldList fieldList;
fieldList.addAscii( 1, "ascii" ).addInt( 10, 20 ).complete();
while ( fieldList.forth() )
{
const FieldEntry& fieldEntry = fieldList.getEntry();
...
}