CompilerSpecific.h

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#ifndef GALOIS_RUNTIME_LL_COMPILERSPECIFIC_H
#define GALOIS_RUNTIME_LL_COMPILERSPECIFIC_H

namespace Galois {
namespace Runtime {
namespace LL {

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

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

inline static void flushInstructionPipeline() {
#if defined(__i386__) || defined(__amd64__)
  asm volatile (
      "xor %%eax, %%eax;"
      "cpuid;"
      :::"%eax", "%ebx", "%ecx", "%edx");
#endif
}

//xeons have 64 byte cache lines, but will prefetch 2 at a time
#define GALOIS_CACHE_LINE_SIZE 128

#if defined(__INTEL_COMPILER)
#define GALOIS_ATTRIBUTE_NOINLINE __attribute__ ((noinline))
#define GALOIS_ATTRIBUTE_DEPRECATED __attribute__ ((deprecated))
#define GALOIS_ATTRIBUTE_ALIGN_CACHE_LINE __attribute__((aligned(GALOIS_CACHE_LINE_SIZE)))

#elif defined( __GNUC__)
#define GALOIS_ATTRIBUTE_NOINLINE __attribute__ ((noinline))
#define GALOIS_ATTRIBUTE_DEPRECATED __attribute__ ((deprecated))
#define GALOIS_ATTRIBUTE_ALIGN_CACHE_LINE __attribute__((aligned(GALOIS_CACHE_LINE_SIZE)))

#elif defined( _MSC_VER)
#define GALOIS_ATTRIBUTE_NOINLINE __declspec(noinline)
#define GALOIS_ATTRIBUTE_DEPRECATED __declspec ((deprecated))
#define GALOIS_ATTRIBUTE_ALIGN_CACHE_LINE __declspec(align(GALOIS_CACHE_LINE_SIZE))

#else
#define GALOIS_ATTRIBUTE_NOINLINE
#define GALOIS_ATTRIBUTE_ALIGN_CACHE_LINE
#define GALOIS_ATTRIBUTE_DEPRECATED __attribute__ ((deprecated))
#endif

// used to disable inlining of functions so that they
// show up in stack samples when profiling
#ifdef GALOIS_USE_PROF
#define GALOIS_ATTRIBUTE_PROF_NOINLINE GALOIS_ATTRIBUTE_NOINLINE
#else
#define GALOIS_ATTRIBUTE_PROF_NOINLINE inline
#endif

}
}
} // end namespace Galois

#endif

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