libgo/syscalls/wait4.go

   1 // wait4.go -- Wait4 for systems with wait4.
   2
   3 // Copyright 2011 The Go Authors. All rights reserved.
   4 // Use of this source code is governed by a BSD-style
   5 // license that can be found in the LICENSE file.
   6
   7 package syscall
   8
   9 func libc_wait4(Pid_t, *int, int, *Rusage) Pid_t __asm__ ("wait4")
  10
  11 func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, errno int) {
  12         var status int
  13         r := libc_wait4(Pid_t(pid), &status, options, rusage)
  14         wpid = int(r)
  15         if r < 0 {
  16                 errno = GetErrno()
  17         }
  18         if wstatus != nil {
  19                 *wstatus = WaitStatus(status)
  20         }
  21         return
  22 }