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April 14, 2025 17:10
named pipe sample code
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package main | |
import ( | |
"bufio" | |
"fmt" | |
"log" | |
"os" | |
"syscall" | |
"time" | |
) | |
var pipeFile = "pipe.log" | |
func main() { | |
os.Remove(pipeFile) | |
err := syscall.Mkfifo(pipeFile, 0666) | |
if err != nil { | |
log.Fatal("Make named pipe file error:", err) | |
} | |
go scheduleWrite() | |
fmt.Println("open a named pipe file for read.") | |
file, err := os.OpenFile(pipeFile, os.O_CREATE, os.ModeNamedPipe) | |
if err != nil { | |
log.Fatal("Open named pipe file error:", err) | |
} | |
reader := bufio.NewReader(file) | |
for { | |
line, err := reader.ReadBytes('\n') | |
if err == nil { | |
fmt.Print("load string:" + string(line)) | |
} | |
} | |
} | |
func scheduleWrite() { | |
fmt.Println("start schedule writing.") | |
f, err := os.OpenFile(pipeFile, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0777) | |
if err != nil { | |
log.Fatalf("error opening file: %v", err) | |
} | |
i := 0 | |
for { | |
fmt.Println("write string to named pipe file.") | |
f.WriteString(fmt.Sprintf("test write times:%d\n", i)) | |
i++ | |
time.Sleep(time.Second) | |
} | |
} | |
/* Test result */ | |
/*================================ | |
go run pipe.go | |
open a named pipe file for read. | |
start schedule writing. | |
write string to named pipe file. | |
load string:test write times:0 | |
write string to named pipe file. | |
load string:test write times:1 | |
write string to named pipe file. | |
load string:test write times:2 | |
=================================*/ |
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anyone has benchmark how this performs over sys v msg queues?