Last change
on this file since 3ef5905 was
50cfa99,
checked in by Peter A. Buhr <pabuhr@…>, 5 years ago
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change Go command-line code to behave like C
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-
Property mode set to
100644
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File size:
798 bytes
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Rev | Line | |
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[50abab9] | 1 | package main |
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| 2 | |
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| 3 | import ( |
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[50cfa99] | 4 | "fmt" |
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| 5 | "time" |
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| 6 | "os" |
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| 7 | "strconv" |
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| 8 | "runtime" |
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[50abab9] | 9 | ) |
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| 10 | |
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| 11 | //======================================= |
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| 12 | // time context switch |
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| 13 | //======================================= |
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| 14 | |
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| 15 | var shake chan bool = make( chan bool ) |
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| 16 | |
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| 17 | func ContextSwitch(N int) { |
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| 18 | start := time.Now() |
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| 19 | for i := 1; i <= N; i += 1 { |
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| 20 | runtime.Gosched() |
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| 21 | } |
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| 22 | end := time.Now() |
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| 23 | fmt.Printf("%d\n", end.Sub(start) / time.Duration(N)) |
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| 24 | shake <- true // indicate completion |
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| 25 | } |
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| 26 | |
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| 27 | //======================================= |
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| 28 | // benchmark driver |
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| 29 | //======================================= |
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| 30 | |
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| 31 | func main() { |
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[50cfa99] | 32 | var times int = 10000000 |
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| 33 | if len( os.Args ) > 2 { os.Exit( 1 ) } |
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| 34 | if len( os.Args ) == 2 { times, _ = strconv.Atoi(os.Args[1]) } |
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| 35 | go ContextSwitch( times ) // context switch |
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[50abab9] | 36 | <- shake |
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| 37 | } |
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[b4107c8] | 38 | |
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| 39 | // Local Variables: // |
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| 40 | // tab-width: 4 // |
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| 41 | // End: // |
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