github.com/kooksee/kchain@v0.0.0-20180613035215-4aef51c04906/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