better handling of os signals

go/weed/mount_std.go

@@ -11,7 +11,6 @@ import (
 	"code.google.com/p/weed-fs/go/util"
 	"fmt"
 	"os"
-	"os/signal"
 	"runtime"
 )
 
@@ -28,16 +27,10 @@ func runMount(cmd *Command, args []string) bool {
 		return false
 	}
 
-	signalChan := make(chan os.Signal, 1)
-	signal.Notify(signalChan, os.Interrupt, os.Kill)
-	go func() {
-		for _ = range signalChan {
-			// sig is a ^C, handle it
-			fuse.Unmount(*mountOptions.dir)
-			c.Close()
-			os.Exit(0)
-		}
-	}()
+	OnInterrupt(func() {
+		fuse.Unmount(*mountOptions.dir)
+		c.Close()
+	})
 
 	err = fs.Serve(c, WFS{})
 	if err != nil {

go/weed/server.go

@@ -7,7 +7,6 @@ import (
 	"github.com/gorilla/mux"
 	"net/http"
 	"os"
-	"os/signal"
 	"runtime"
 	"runtime/pprof"
 	"strconv"
@@ -218,16 +217,10 @@ func runServer(cmd *Command, args []string) bool {
 		glog.Fatalf(e.Error())
 	}
 
-	// deal with control+c
-	signalChan := make(chan os.Signal, 1)
-	signal.Notify(signalChan, os.Interrupt, os.Kill)
-	go func() {
-		for _ = range signalChan {
-			volumeServer.Shutdown()
-			pprof.StopCPUProfile()
-			os.Exit(0)
-		}
-	}()
+	OnInterrupt(func() {
+		volumeServer.Shutdown()
+		pprof.StopCPUProfile()
+	})
 
 	if e := http.Serve(volumeListener, r); e != nil {
 		glog.Fatalf("Fail to serve:%s", e.Error())

go/weed/signal_handling.go

@@ -0,0 +1,27 @@
+// +build !plan9
+
+package main
+
+import (
+	"os"
+	"os/signal"
+	"syscall"
+)
+
+func OnInterrupt(fn func()) {
+	// deal with control+c,etc
+	signalChan := make(chan os.Signal, 1)
+	signal.Notify(signalChan,
+		os.Interrupt,
+		os.Kill,
+		syscall.SIGHUP,
+		syscall.SIGINT,
+		syscall.SIGTERM,
+		syscall.SIGQUIT)
+	go func() {
+		for _ = range signalChan {
+			fn()
+			os.Exit(0)
+		}
+	}()
+}

go/weed/signal_handling_notsupported.go

@@ -0,0 +1,8 @@
+// +build plan9
+
+package main
+
+import ()
+
+func OnInterrupt(fn func()) {
+}

go/weed/volume.go

@@ -6,7 +6,6 @@ import (
 	"code.google.com/p/weed-fs/go/weed/weed_server"
 	"net/http"
 	"os"
-	"os/signal"
 	"runtime"
 	"strconv"
 	"strings"
@@ -92,15 +91,9 @@ func runVolume(cmd *Command, args []string) bool {
 		glog.Fatalf(e.Error())
 	}
 
-	// deal with control+c
-	signalChan := make(chan os.Signal, 1)
-	signal.Notify(signalChan, os.Interrupt, os.Kill)
-	go func() {
-		for _ = range signalChan {
-			volumeServer.Shutdown()
-			os.Exit(0)
-		}
-	}()
+	OnInterrupt(func() {
+		volumeServer.Shutdown()
+	})
 
 	if e := http.Serve(listener, r); e != nil {
 		glog.Fatalf("Fail to serve:%s", e.Error())