gtsocial-umbx

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features.go (1137B)

      1 /*
      2  * Copyright 2021 ByteDance Inc.
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *     http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package cpu
     18 
     19 import (
     20     `fmt`
     21     `os`
     22 
     23     `github.com/klauspost/cpuid/v2`
     24 )
     25 
     26 var (
     27     HasAVX  = cpuid.CPU.Has(cpuid.AVX)
     28     HasAVX2 = cpuid.CPU.Has(cpuid.AVX2)
     29     HasSSE = cpuid.CPU.Has(cpuid.SSE)
     30 )
     31 
     32 func init() {
     33     switch v := os.Getenv("SONIC_MODE"); v {
     34         case ""       : break
     35         case "auto"   : break
     36         case "noavx"  : HasAVX = false; fallthrough
     37         case "noavx2" : HasAVX2 = false
     38         default       : panic(fmt.Sprintf("invalid mode: '%s', should be one of 'auto', 'noavx', 'noavx2'", v))
     39     }
     40 }