make the ping process Thread-safe

ShadowsocksX-NG/PingClient.swift

@@ -144,23 +144,25 @@ class PingServers:NSObject{
  if let latency = $0{
  self.SerMgr.profiles[k].latency = String(latency)
 
- synchronized(lock: result as AnyObject){
- result.append(k,latency)
- }
- DispatchQueue.main.async {
- // do the UI update HERE
- (NSApplication.shared().delegate as! AppDelegate).updateServersMenu()
- (NSApplication.shared().delegate as! AppDelegate).updateRunningModeMenu()
- }
  }
-
-
-
  })
  }
  // after two seconds ,time out
  delay(3){
  DispatchQueue.main.async {
+
+ for k in 0..<self.SerMgr.profiles.count {
+ if let late = self.SerMgr.profiles[k].latency{
+ if let latency = Double(late){
+ result.append((k,latency))
+ }
+ }
+ }
+
+
+ (NSApplication.shared().delegate as! AppDelegate).updateServersMenu()
+ (NSApplication.shared().delegate as! AppDelegate).updateRunningModeMenu()
+
  // do the UI update HERE
  if let min = result.min(by: {$0.1 < $1.1}){
  self.fastest = String(describing: min.1)