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