github.com/jgarto/itcv@v0.0.0-20180826224514-4eea09c1aa0d/_vendor/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 Getpagesize() int { return 4096 }
    13  
    14  func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) }
    15  
    16  func NsecToTimespec(nsec int64) (ts Timespec) {
    17  	ts.Sec = int32(nsec / 1e9)
    18  	ts.Nsec = int32(nsec % 1e9)
    19  	return
    20  }
    21  
    22  func NsecToTimeval(nsec int64) (tv Timeval) {
    23  	nsec += 999 // round up to microsecond
    24  	tv.Usec = int32(nsec % 1e9 / 1e3)
    25  	tv.Sec = int32(nsec / 1e9)
    26  	return
    27  }
    28  
    29  //sysnb	gettimeofday(tp *Timeval) (sec int32, usec int32, err error)
    30  func Gettimeofday(tv *Timeval) (err error) {
    31  	// The tv passed to gettimeofday must be non-nil
    32  	// but is otherwise unused.  The answers come back
    33  	// in the two registers.
    34  	sec, usec, err := gettimeofday(tv)
    35  	tv.Sec = int32(sec)
    36  	tv.Usec = int32(usec)
    37  	return err
    38  }
    39  
    40  func SetKevent(k *Kevent_t, fd, mode, flags int) {
    41  	k.Ident = uint32(fd)
    42  	k.Filter = int16(mode)
    43  	k.Flags = uint16(flags)
    44  }
    45  
    46  func (iov *Iovec) SetLen(length int) {
    47  	iov.Len = uint32(length)
    48  }
    49  
    50  func (msghdr *Msghdr) SetControllen(length int) {
    51  	msghdr.Controllen = uint32(length)
    52  }
    53  
    54  func (cmsg *Cmsghdr) SetLen(length int) {
    55  	cmsg.Len = uint32(length)
    56  }
    57  
    58  func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
    59  	var length = uint64(count)
    60  
    61  	_, _, e1 := Syscall9(SYS_SENDFILE, uintptr(infd), uintptr(outfd), uintptr(*offset), uintptr(*offset>>32), uintptr(unsafe.Pointer(&length)), 0, 0, 0, 0)
    62  
    63  	written = int(length)
    64  
    65  	if e1 != 0 {
    66  		err = e1
    67  	}
    68  	return
    69  }
    70  
    71  func Syscall9(num, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno) // sic