github.com/graybobo/golang.org-package-offline-cache@v0.0.0-20200626051047-6608995c132f/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 TimevalToNsec(tv Timeval) int64 { return int64(tv.Sec)*1e9 + int64(tv.Usec)*1e3 }
    23  
    24  func NsecToTimeval(nsec int64) (tv Timeval) {
    25  	nsec += 999 // round up to microsecond
    26  	tv.Usec = int32(nsec % 1e9 / 1e3)
    27  	tv.Sec = int32(nsec / 1e9)
    28  	return
    29  }
    30  
    31  //sysnb	gettimeofday(tp *Timeval) (sec int32, usec int32, err error)
    32  func Gettimeofday(tv *Timeval) (err error) {
    33  	// The tv passed to gettimeofday must be non-nil
    34  	// but is otherwise unused.  The answers come back
    35  	// in the two registers.
    36  	sec, usec, err := gettimeofday(tv)
    37  	tv.Sec = int32(sec)
    38  	tv.Usec = int32(usec)
    39  	return err
    40  }
    41  
    42  func SetKevent(k *Kevent_t, fd, mode, flags int) {
    43  	k.Ident = uint32(fd)
    44  	k.Filter = int16(mode)
    45  	k.Flags = uint16(flags)
    46  }
    47  
    48  func (iov *Iovec) SetLen(length int) {
    49  	iov.Len = uint32(length)
    50  }
    51  
    52  func (msghdr *Msghdr) SetControllen(length int) {
    53  	msghdr.Controllen = uint32(length)
    54  }
    55  
    56  func (cmsg *Cmsghdr) SetLen(length int) {
    57  	cmsg.Len = uint32(length)
    58  }
    59  
    60  func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
    61  	var length = uint64(count)
    62  
    63  	_, _, e1 := Syscall9(SYS_SENDFILE, uintptr(infd), uintptr(outfd), uintptr(*offset), uintptr(*offset>>32), uintptr(unsafe.Pointer(&length)), 0, 0, 0, 0)
    64  
    65  	written = int(length)
    66  
    67  	if e1 != 0 {
    68  		err = e1
    69  	}
    70  	return
    71  }
    72  
    73  func Syscall9(num, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno) // sic