github.com/dolotech/hongbao@v0.0.0-20191130105438-fd59d7a5dda5/src/golang.org/x/sys/unix/syscall_darwin_arm.go (about)

     1  // Copyright 2015 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  package unix
     6  
     7  import (
     8  	"syscall"
     9  	"unsafe"
    10  )
    11  
    12  func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) }
    13  
    14  func NsecToTimespec(nsec int64) (ts Timespec) {
    15  	ts.Sec = int32(nsec / 1e9)
    16  	ts.Nsec = int32(nsec % 1e9)
    17  	return
    18  }
    19  
    20  func NsecToTimeval(nsec int64) (tv Timeval) {
    21  	nsec += 999 // round up to microsecond
    22  	tv.Usec = int32(nsec % 1e9 / 1e3)
    23  	tv.Sec = int32(nsec / 1e9)
    24  	return
    25  }
    26  
    27  //sysnb	gettimeofday(tp *Timeval) (sec int32, usec int32, err error)
    28  func Gettimeofday(tv *Timeval) (err error) {
    29  	// The tv passed to gettimeofday must be non-nil
    30  	// but is otherwise unused.  The answers come back
    31  	// in the two registers.
    32  	sec, usec, err := gettimeofday(tv)
    33  	tv.Sec = int32(sec)
    34  	tv.Usec = int32(usec)
    35  	return err
    36  }
    37  
    38  func SetKevent(k *Kevent_t, fd, mode, flags int) {
    39  	k.Ident = uint32(fd)
    40  	k.Filter = int16(mode)
    41  	k.Flags = uint16(flags)
    42  }
    43  
    44  func (iov *Iovec) SetLen(length int) {
    45  	iov.Len = uint32(length)
    46  }
    47  
    48  func (msghdr *Msghdr) SetControllen(length int) {
    49  	msghdr.Controllen = uint32(length)
    50  }
    51  
    52  func (cmsg *Cmsghdr) SetLen(length int) {
    53  	cmsg.Len = uint32(length)
    54  }
    55  
    56  func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
    57  	var length = uint64(count)
    58  
    59  	_, _, e1 := Syscall9(SYS_SENDFILE, uintptr(infd), uintptr(outfd), uintptr(*offset), uintptr(*offset>>32), uintptr(unsafe.Pointer(&length)), 0, 0, 0, 0)
    60  
    61  	written = int(length)
    62  
    63  	if e1 != 0 {
    64  		err = e1
    65  	}
    66  	return
    67  }
    68  
    69  func Syscall9(num, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno) // sic