github.com/maenmax/kairep@v0.0.0-20210218001208-55bf3df36788/src/golang.org/x/sys/unix/syscall_darwin_arm64.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  // +build arm64,darwin
     6  
     7  package unix
     8  
     9  import (
    10  	"syscall"
    11  	"unsafe"
    12  )
    13  
    14  func Getpagesize() int { return 16384 }
    15  
    16  func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) }
    17  
    18  func NsecToTimespec(nsec int64) (ts Timespec) {
    19  	ts.Sec = nsec / 1e9
    20  	ts.Nsec = nsec % 1e9
    21  	return
    22  }
    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 = int64(nsec / 1e9)
    28  	return
    29  }
    30  
    31  //sysnb	gettimeofday(tp *Timeval) (sec int64, 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 = sec
    38  	tv.Usec = usec
    39  	return err
    40  }
    41  
    42  func SetKevent(k *Kevent_t, fd, mode, flags int) {
    43  	k.Ident = uint64(fd)
    44  	k.Filter = int16(mode)
    45  	k.Flags = uint16(flags)
    46  }
    47  
    48  func (iov *Iovec) SetLen(length int) {
    49  	iov.Len = uint64(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 := Syscall6(SYS_SENDFILE, uintptr(infd), uintptr(outfd), uintptr(*offset), uintptr(unsafe.Pointer(&length)), 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
    74  
    75  // SYS___SYSCTL is used by syscall_bsd.go for all BSDs, but in modern versions
    76  // of darwin/arm64 the syscall is called sysctl instead of __sysctl.
    77  const SYS___SYSCTL = SYS_SYSCTL