gcc/testsuite/go.test/test/bench/k-nucleotide-parallel.go

   1 /*
   2 Redistribution and use in source and binary forms, with or without
   3 modification, are permitted provided that the following conditions are met:
   4
   5     * Redistributions of source code must retain the above copyright
   6     notice, this list of conditions and the following disclaimer.
   7
   8     * Redistributions in binary form must reproduce the above copyright
   9     notice, this list of conditions and the following disclaimer in the
  10     documentation and/or other materials provided with the distribution.
  11
  12     * Neither the name of "The Computer Language Benchmarks Game" nor the
  13     name of "The Computer Language Shootout Benchmarks" nor the names of
  14     its contributors may be used to endorse or promote products derived
  15     from this software without specific prior written permission.
  16
  17 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  18 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20 ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  21 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  22 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  23 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  24 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  25 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  26 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  27 POSSIBILITY OF SUCH DAMAGE.
  28 */
  29
  30 /* The Computer Language Benchmarks Game
  31  * http://shootout.alioth.debian.org/
  32  *
  33  * contributed by The Go Authors.
  34  */
  35
  36 package main
  37
  38 import (
  39         "bufio"
  40         "bytes"
  41         "fmt"
  42         "io/ioutil"
  43         "os"
  44         "sort"
  45 )
  46
  47 func count(data string, n int) map[string]int {
  48         counts := make(map[string]int)
  49         top := len(data) - n
  50         for i := 0; i <= top; i++ {
  51                 s := data[i : i+n]
  52                 counts[s]++
  53         }
  54         return counts
  55 }
  56
  57 func countOne(data string, s string) int {
  58         return count(data, len(s))[s]
  59 }
  60
  61 type kNuc struct {
  62         name  string
  63         count int
  64 }
  65
  66 type kNucArray []kNuc
  67
  68 func (kn kNucArray) Len() int      { return len(kn) }
  69 func (kn kNucArray) Swap(i, j int) { kn[i], kn[j] = kn[j], kn[i] }
  70 func (kn kNucArray) Less(i, j int) bool {
  71         if kn[i].count == kn[j].count {
  72                 return kn[i].name > kn[j].name // sort down
  73         }
  74         return kn[i].count > kn[j].count
  75 }
  76
  77 func sortedArray(m map[string]int) kNucArray {
  78         kn := make(kNucArray, len(m))
  79         i := 0
  80         for k, v := range m {
  81                 kn[i] = kNuc{k, v}
  82                 i++
  83         }
  84         sort.Sort(kn)
  85         return kn
  86 }
  87
  88 func printKnucs(a kNucArray) {
  89         sum := 0
  90         for _, kn := range a {
  91                 sum += kn.count
  92         }
  93         for _, kn := range a {
  94                 fmt.Printf("%s %.3f\n", kn.name, 100*float64(kn.count)/float64(sum))
  95         }
  96         fmt.Print("\n")
  97 }
  98
  99 func main() {
 100         in := bufio.NewReader(os.Stdin)
 101         three := []byte(">THREE ")
 102         for {
 103                 line, err := in.ReadSlice('\n')
 104                 if err != nil {
 105                         fmt.Fprintln(os.Stderr, "ReadLine err:", err)
 106                         os.Exit(2)
 107                 }
 108                 if line[0] == '>' && bytes.Equal(line[0:len(three)], three) {
 109                         break
 110                 }
 111         }
 112         data, err := ioutil.ReadAll(in)
 113         if err != nil {
 114                 fmt.Fprintln(os.Stderr, "ReadAll err:", err)
 115                 os.Exit(2)
 116         }
 117         // delete the newlines and convert to upper case
 118         j := 0
 119         for i := 0; i < len(data); i++ {
 120                 if data[i] != '\n' {
 121                         data[j] = data[i] &^ ' ' // upper case
 122                         j++
 123                 }
 124         }
 125         str := string(data[0:j])
 126
 127         var arr1, arr2 kNucArray
 128         countsdone := make(chan bool)
 129         go func() {
 130                 arr1 = sortedArray(count(str, 1))
 131                 countsdone <- true
 132         }()
 133         go func() {
 134                 arr2 = sortedArray(count(str, 2))
 135                 countsdone <- true
 136         }()
 137
 138         interests := []string{"GGT", "GGTA", "GGTATT", "GGTATTTTAATT", "GGTATTTTAATTTATAGT"}
 139         results := make([]chan string, len(interests))
 140         for i, s := range interests {
 141                 ch := make(chan string)
 142                 results[i] = ch
 143                 go func(result chan string, ss string) {
 144                         result <- fmt.Sprintf("%d %s\n", countOne(str, ss), ss)
 145                 }(ch, s)
 146         }
 147         <-countsdone
 148         <-countsdone
 149         printKnucs(arr1)
 150         printKnucs(arr2)
 151         for _, rc := range results {
 152                 fmt.Print(<-rc)
 153         }
 154
 155 }