libgo/go/syscall/libcall_wait4_aix.go

   1 // Copyright 2009 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 // Handle AIX's wait4 specific behavior
   6
   7 package syscall
   8
   9 //sys  wait4(pid Pid_t, status *_C_int, options int, rusage *Rusage) (wpid Pid_t, err error)
  10 //wait4(pid Pid_t, status *_C_int, options _C_int, rusage *Rusage) Pid_t
  11
  12 func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
  13         var status _C_int
  14         var r Pid_t
  15         err = ERESTART
  16         // AIX wait4 may return with ERESTART errno, while the processus is still
  17         // active.
  18         for err == ERESTART {
  19                 r, err = wait4(Pid_t(pid), &status, options, rusage)
  20         }
  21         wpid = int(r)
  22         if wstatus != nil {
  23                 *wstatus = WaitStatus(status)
  24         }
  25         return
  26 }