Source file src/pkg/syscall/syscall.go
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 contains an interface to the low-level operating system 6 // primitives. The details vary depending on the underlying system. 7 // Its primary use is inside other packages that provide a more portable 8 // interface to the system, such as "os", "time" and "net". Use those 9 // packages rather than this one if you can. 10 // For details of the functions and data types in this package consult 11 // the manuals for the appropriate operating system. 12 // These calls return err == nil to indicate success; otherwise 13 // err is an operating system error describing the failure. 14 // On most systems, that error has type syscall.Errno. 15 package syscall 16 17 // StringByteSlice returns a NUL-terminated slice of bytes 18 // containing the text of s. 19 func StringByteSlice(s string) []byte { 20 a := make([]byte, len(s)+1) 21 copy(a, s) 22 return a 23 } 24 25 // StringBytePtr returns a pointer to a NUL-terminated array of bytes 26 // containing the text of s. 27 func StringBytePtr(s string) *byte { return &StringByteSlice(s)[0] } 28 29 // Single-word zero for use when we need a valid pointer to 0 bytes. 30 // See mksyscall.pl. 31 var _zero uintptr 32 33 func (ts *Timespec) Unix() (sec int64, nsec int64) { 34 return int64(ts.Sec), int64(ts.Nsec) 35 } 36 37 func (tv *Timeval) Unix() (sec int64, nsec int64) { 38 return int64(tv.Sec), int64(tv.Usec) * 1000 39 } 40 41 func (ts *Timespec) Nano() int64 { 42 return int64(ts.Sec)*1e9 + int64(ts.Nsec) 43 } 44 45 func (tv *Timeval) Nano() int64 { 46 return int64(tv.Sec)*1e9 + int64(tv.Usec)*1000 47 }