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Code Issues Releases Activity

fix panic: sync: negative WaitGroup counter

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This commit is contained in:
sanghee 2019-01-03 22:44:32 +09:00
parent 5fe19d639f
commit bf15535a5b
2 changed files with 6 additions and 2 deletions
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3
grace/conn.go
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@ -28,12 +28,11 @@ func (c *graceConn) Close() (err error) {
}() }()
c.m.Lock() c.m.Lock()
defer c.m.Unlock()
if c.closed { if c.closed {
c.m.Unlock()
return return
} }
c.server.wg.Done() c.server.wg.Done()
c.closed = true c.closed = true
c.m.Unlock()
return c.Conn.Close() return c.Conn.Close()
} }

5
grace/server.go
View File

@ -34,6 +34,11 @@ type Server struct {
// creating a new service goroutine for each. // creating a new service goroutine for each.
// The service goroutines read requests and then call srv.Handler to reply to them. // The service goroutines read requests and then call srv.Handler to reply to them.
func (srv *Server) Serve() (err error) { func (srv *Server) Serve() (err error) {
defer func() {
if r := recover(); r != nil {
log.Println("wait group counter is negative", r)
}
}()
srv.state = StateRunning srv.state = StateRunning
err = srv.Server.Serve(srv.GraceListener) err = srv.Server.Serve(srv.GraceListener)
log.Println(syscall.Getpid(), "Waiting for connections to finish...") log.Println(syscall.Getpid(), "Waiting for connections to finish...")