numa.h

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// -----------------------------------------------------------------------------
//
// Copyright (C) 2021 CERN & University of Surrey for the benefit of the
// BioDynaMo collaboration. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
//
// See the LICENSE file distributed with this work for details.
// See the NOTICE file distributed with this work for additional information
// regarding copyright ownership.
//
// -----------------------------------------------------------------------------
 
#ifndef CORE_UTIL_NUMA_H_
#define CORE_UTIL_NUMA_H_
 
#ifdef USE_NUMA
 
#include <numa.h>
 
#else
 
#include <omp.h>
 
inline int numa_available() { return 0; }
inline int numa_num_configured_nodes() { return 1; }
inline int numa_num_configured_cpus() { return omp_get_max_threads(); }
inline int numa_run_on_node(int) { return 0; }
inline int numa_node_of_cpu(int) { return 0; }
inline int numa_move_pages(int pid, unsigned long count, void **pages,
                           const int *nodes, int *status, int flags) {
  *status = 0;
  return 0;
}
inline void *numa_alloc_onnode(uint64_t size, int nid) { return malloc(size); }
inline void numa_free(void *p, uint64_t) { free(p); }
 
// on linux in <sched.h>, but missing on MacOS
inline int sched_getcpu() { return 0; }
 
#endif  // USE_NUMA
 
#endif  // CORE_UTIL_NUMA_H_