UnitTestAlg3.cxx

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//
// Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
//
 
// Local include(s).
#include "EventLoopTest/UnitTestAlg3.h"
 
namespace EL {
 
   UnitTestAlg3::UnitTestAlg3( const std::string& name, ISvcLocator* svcLoc )
      : AnaAlgorithm( name, svcLoc ) {
 
      // Declare the algorithm's properties.
      declareProperty( "LeakBytes", m_leakBytes = 0,
                       "Number of bytes to leak per event" );
   }
 
   ::StatusCode UnitTestAlg3::execute() {
 
      // Allocate the requested amount of memory.
      if( m_leakBytes > 0 ) {
         // This needs to be `volatile` and zeroed out to ensure the memory
         // really gets allocated by the operating system.  Without `volatile`
         // the compiler is essentially allowed to optimize away the write,
         // and the operating system isn't required to allocate it if it isn't
         // written to.
         volatile char* lostPointer = new volatile char[ m_leakBytes ];
         for( int i = 0; i < m_leakBytes; ++i ) {
            *lostPointer = 0;
            ++lostPointer;
         }
      }
 
      // Return gracefully.
      return ::StatusCode::SUCCESS;
   }
 
} // namespace EL