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feat: add refork #2

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feat: add refork #2

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29 changes: 29 additions & 0 deletions fork.go
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Original file line number Diff line number Diff line change
Expand Up @@ -92,6 +92,35 @@ func (f *Function) Fork(args ...interface{}) (err error) {
return
}

// Combine NewFork and Fork with previous function configuration
func (f *Function) ReFork(args ...interface{}) (err error) {
previous := f.c
f.c = exec.Cmd{}
f.c.Path, _ = os.Executable()
f.c.Args = previous.Args
f.c.Stderr = f.Stderr
f.c.Stdout = f.Stdout
f.c.Stdin = f.Stdin
f.c.SysProcAttr = f.SysProcAttr
f.c.Env = os.Environ()
f.c.Env = append(f.c.Env, nameVar+"="+f.Name)
af, err := ioutil.TempFile("", "gofork_*")
f.c.Env = append(f.c.Env, argsVar+"="+af.Name())
if err != nil {
return
}
enc := gob.NewEncoder(af)
for _, iv := range args {
enc.EncodeValue(reflect.ValueOf(iv))
}
af.Close()
if err = f.c.Start(); err != nil {
return
}
f.Process = f.c.Process
return
}

// Wait provides a wrapper around exec.Cmd.Wait()
func (f *Function) Wait() (err error) {
if err = f.c.Wait(); err != nil {
Expand Down