github.com/q45/go@v0.0.0-20151101211701-a4fb8c13db3f/src/syscall/syscall_freebsd_amd64.go (about)

     1  // Copyright 2009 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 syscall
     6  
     7  import "unsafe"
     8  
     9  func Getpagesize() int { return 4096 }
    10  
    11  func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) }
    12  
    13  func NsecToTimespec(nsec int64) (ts Timespec) {
    14  	ts.Sec = nsec / 1e9
    15  	ts.Nsec = nsec % 1e9
    16  	return
    17  }
    18  
    19  func TimevalToNsec(tv Timeval) int64 { return int64(tv.Sec)*1e9 + int64(tv.Usec)*1e3 }
    20  
    21  func NsecToTimeval(nsec int64) (tv Timeval) {
    22  	nsec += 999 // round up to microsecond
    23  	tv.Usec = nsec % 1e9 / 1e3
    24  	tv.Sec = int64(nsec / 1e9)
    25  	return
    26  }
    27  
    28  func SetKevent(k *Kevent_t, fd, mode, flags int) {
    29  	k.Ident = uint64(fd)
    30  	k.Filter = int16(mode)
    31  	k.Flags = uint16(flags)
    32  }
    33  
    34  func (iov *Iovec) SetLen(length int) {
    35  	iov.Len = uint64(length)
    36  }
    37  
    38  func (msghdr *Msghdr) SetControllen(length int) {
    39  	msghdr.Controllen = uint32(length)
    40  }
    41  
    42  func (cmsg *Cmsghdr) SetLen(length int) {
    43  	cmsg.Len = uint32(length)
    44  }
    45  
    46  func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
    47  	var writtenOut uint64 = 0
    48  	_, _, e1 := Syscall9(SYS_SENDFILE, uintptr(infd), uintptr(outfd), uintptr(*offset), uintptr(count), 0, uintptr(unsafe.Pointer(&writtenOut)), 0, 0, 0)
    49  
    50  	written = int(writtenOut)
    51  
    52  	if e1 != 0 {
    53  		err = e1
    54  	}
    55  	return
    56  }
    57  
    58  func Syscall9(num, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err Errno)