arrow/util/prefetch.h

0001 // Licensed to the Apache Software Foundation (ASF) under one
0002 // or more contributor license agreements.  See the NOTICE file
0003 // distributed with this work for additional information
0004 // regarding copyright ownership.  The ASF licenses this file
0005 // to you under the Apache License, Version 2.0 (the
0006 // "License"); you may not use this file except in compliance
0007 // with the License.  You may obtain a copy of the License at
0008 //
0009 //   http://www.apache.org/licenses/LICENSE-2.0
0010 //
0011 // Unless required by applicable law or agreed to in writing,
0012 // software distributed under the License is distributed on an
0013 // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
0014 // KIND, either express or implied.  See the License for the
0015 // specific language governing permissions and limitations
0016 // under the License.
0017
0018 #pragma once
0019
0020 #if defined(__GNUC__)  // GCC and compatible compilers (clang, Intel ICC)
0021 #  define ARROW_PREFETCH(addr) __builtin_prefetch(addr)
0022 #elif defined(_MSC_VER)  // MSVC
0023 #  if defined(ARROW_HAVE_SSE4_2) || defined(ARROW_HAVE_RUNTIME_SSE4_2)
0024 #    include <nmmintrin.h>
0025 #    define ARROW_PREFETCH(addr) _mm_prefetch((const char*)(addr), _MM_HINT_T0)
0026 #  else
0027 #    define ARROW_PREFETCH(addr)
0028 #  endif
0029 #else
0030 #  define ARROW_PREFETCH(addr)
0031 #endif