stall.h

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// This file's extension implies that it's C, but it's really -*- C++ -*-.
/*
 * Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration.
 */
 
 
#ifndef CXXUTILS_STALL_H
#define CXXUTILS_STALL_H
 
 
#if defined(__i386__) || defined(__x86_64__)
# include <xmmintrin.h>
#endif
 
 
namespace CxxUtils {
 

inline
void stall()
{
#if defined(__i386__) || defined(__x86_64__)
  _mm_pause();
#elif defined(__aarch64__) && defined(__GNUC__)
  asm volatile("yield" ::: "memory");
#endif
}
 
 
} // namespace CxxUtils
 
 
#endif // not CXXUTILS_STALL_H