CompilerSpecific.h

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/*
 * This file belongs to the Galois project, a C++ library for exploiting
 * parallelism. The code is being released under the terms of the 3-Clause BSD
 * License (a copy is located in LICENSE.txt at the top-level directory).
 *
 * Copyright (C) 2018, The University of Texas at Austin. All rights reserved.
 * UNIVERSITY EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES CONCERNING THIS
 * SOFTWARE AND DOCUMENTATION, INCLUDING ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR ANY PARTICULAR PURPOSE, NON-INFRINGEMENT AND WARRANTIES OF
 * PERFORMANCE, AND ANY WARRANTY THAT MIGHT OTHERWISE ARISE FROM COURSE OF
 * DEALING OR USAGE OF TRADE.  NO WARRANTY IS EITHER EXPRESS OR IMPLIED WITH
 * RESPECT TO THE USE OF THE SOFTWARE OR DOCUMENTATION. Under no circumstances
 * shall University be liable for incidental, special, indirect, direct or
 * consequential damages or loss of profits, interruption of business, or
 * related expenses which may arise from use of Software or Documentation,
 * including but not limited to those resulting from defects in Software and/or
 * Documentation, or loss or inaccuracy of data of any kind.
 */

#ifndef GALOIS_SUBSTRATE_COMPILERSPECIFIC_H
#define GALOIS_SUBSTRATE_COMPILERSPECIFIC_H

#include "galois/config.h"

namespace galois::substrate {

inline static void asmPause() {
#if defined(__i386__) || defined(__amd64__)
  //  __builtin_ia32_pause();
  asm volatile("pause");
#endif
}

inline static void compilerBarrier() { asm volatile("" ::: "memory"); }

// xeons have 64 byte cache lines, but will prefetch 2 at a time
constexpr int GALOIS_CACHE_LINE_SIZE = 128;

#if defined(__INTEL_COMPILER)
#define GALOIS_ATTRIBUTE_NOINLINE __attribute__((noinline))

#elif defined(__GNUC__)
#define GALOIS_ATTRIBUTE_NOINLINE __attribute__((noinline))

#else
#define GALOIS_ATTRIBUTE_NOINLINE
#endif

} // namespace galois::substrate

#endif