Source file src/pkg/os/pipe_bsd.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	// +build aix darwin dragonfly js,wasm nacl solaris
     6	
     7	package os
     8	
     9	import "syscall"
    10	
    11	// Pipe returns a connected pair of Files; reads from r return bytes written to w.
    12	// It returns the files and an error, if any.
    13	func Pipe() (r *File, w *File, err error) {
    14		var p [2]int
    15	
    16		// See ../syscall/exec.go for description of lock.
    17		syscall.ForkLock.RLock()
    18		e := syscall.Pipe(p[0:])
    19		if e != nil {
    20			syscall.ForkLock.RUnlock()
    21			return nil, nil, NewSyscallError("pipe", e)
    22		}
    23		syscall.CloseOnExec(p[0])
    24		syscall.CloseOnExec(p[1])
    25		syscall.ForkLock.RUnlock()
    26	
    27		return newFile(uintptr(p[0]), "|0", kindPipe), newFile(uintptr(p[1]), "|1", kindPipe), nil
    28	}
    29	

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