libgo/go/syscall/time_fake.go

   1 // Copyright 2019 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 faketime
   6
   7 package syscall
   8
   9 import "unsafe"
  10
  11 const faketime = true
  12
  13 // When faketime is enabled, we redirect writes to FDs 1 and 2 through
  14 // the runtime's write function, since that adds the framing that
  15 // reports the emulated time.
  16
  17 //go:linkname runtimeWrite runtime.write
  18 func runtimeWrite(fd uintptr, p unsafe.Pointer, n int32) int32
  19
  20 func faketimeWrite(fd int, p []byte) int {
  21         var pp *byte
  22         if len(p) > 0 {
  23                 pp = &p[0]
  24         }
  25         return int(runtimeWrite(uintptr(fd), unsafe.Pointer(pp), int32(len(p))))
  26 }