f8d9fa9e80
This upgrades all of libgo other than the runtime package to the Go 1.4 release. In Go 1.4 much of the runtime was rewritten into Go. Merging that code will take more time and will not change the API, so I'm putting it off for now. There are a few runtime changes anyhow, to accomodate other packages that rely on minor modifications to the runtime support. The compiler changes slightly to add a one-bit flag to each type descriptor kind that is stored directly in an interface, which for gccgo is currently only pointer types. Another one-bit flag (gcprog) is reserved because it is used by the gc compiler, but gccgo does not currently use it. There is another error check in the compiler since I ran across it during testing. gotools/: * Makefile.am (go_cmd_go_files): Sort entries. Add generate.go. * Makefile.in: Rebuild. From-SVN: r219627
100 lines
3.3 KiB
Go
100 lines
3.3 KiB
Go
// Copyright 2009 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
// Package syscall contains an interface to the low-level operating system
|
|
// primitives. The details vary depending on the underlying system, and
|
|
// by default, godoc will display the syscall documentation for the current
|
|
// system. If you want godoc to display syscall documentation for another
|
|
// system, set $GOOS and $GOARCH to the desired system. For example, if
|
|
// you want to view documentation for freebsd/arm on linux/amd64, set $GOOS
|
|
// to freebsd and $GOARCH to arm.
|
|
// The primary use of syscall is inside other packages that provide a more
|
|
// portable interface to the system, such as "os", "time" and "net". Use
|
|
// those packages rather than this one if you can.
|
|
// For details of the functions and data types in this package consult
|
|
// the manuals for the appropriate operating system.
|
|
// These calls return err == nil to indicate success; otherwise
|
|
// err is an operating system error describing the failure.
|
|
// On most systems, that error has type syscall.Errno.
|
|
//
|
|
// NOTE: This package is locked down. Code outside the standard
|
|
// Go repository should be migrated to use the corresponding
|
|
// package in the go.sys subrepository. That is also where updates
|
|
// required by new systems or versions should be applied.
|
|
// See https://golang.org/s/go1.4-syscall for more information.
|
|
//
|
|
package syscall
|
|
|
|
import "unsafe"
|
|
|
|
// StringByteSlice is deprecated. Use ByteSliceFromString instead.
|
|
// If s contains a NUL byte this function panics instead of
|
|
// returning an error.
|
|
func StringByteSlice(s string) []byte {
|
|
a, err := ByteSliceFromString(s)
|
|
if err != nil {
|
|
panic("syscall: string with NUL passed to StringByteSlice")
|
|
}
|
|
return a
|
|
}
|
|
|
|
// ByteSliceFromString returns a NUL-terminated slice of bytes
|
|
// containing the text of s. If s contains a NUL byte at any
|
|
// location, it returns (nil, EINVAL).
|
|
func ByteSliceFromString(s string) ([]byte, error) {
|
|
for i := 0; i < len(s); i++ {
|
|
if s[i] == 0 {
|
|
return nil, EINVAL
|
|
}
|
|
}
|
|
a := make([]byte, len(s)+1)
|
|
copy(a, s)
|
|
return a, nil
|
|
}
|
|
|
|
// StringBytePtr is deprecated. Use BytePtrFromString instead.
|
|
// If s contains a NUL byte this function panics instead of
|
|
// returning an error.
|
|
func StringBytePtr(s string) *byte { return &StringByteSlice(s)[0] }
|
|
|
|
// BytePtrFromString returns a pointer to a NUL-terminated array of
|
|
// bytes containing the text of s. If s contains a NUL byte at any
|
|
// location, it returns (nil, EINVAL).
|
|
func BytePtrFromString(s string) (*byte, error) {
|
|
a, err := ByteSliceFromString(s)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &a[0], nil
|
|
}
|
|
|
|
// Single-word zero for use when we need a valid pointer to 0 bytes.
|
|
// See mksyscall.pl.
|
|
var _zero uintptr
|
|
|
|
var dummy *byte
|
|
|
|
const sizeofPtr uintptr = uintptr(unsafe.Sizeof(dummy))
|
|
|
|
func (ts *Timespec) Unix() (sec int64, nsec int64) {
|
|
return int64(ts.Sec), int64(ts.Nsec)
|
|
}
|
|
|
|
func (tv *Timeval) Unix() (sec int64, nsec int64) {
|
|
return int64(tv.Sec), int64(tv.Usec) * 1000
|
|
}
|
|
|
|
func (ts *Timespec) Nano() int64 {
|
|
return int64(ts.Sec)*1e9 + int64(ts.Nsec)
|
|
}
|
|
|
|
func (tv *Timeval) Nano() int64 {
|
|
return int64(tv.Sec)*1e9 + int64(tv.Usec)*1000
|
|
}
|
|
|
|
// use is a no-op, but the compiler cannot see that it is.
|
|
// Calling use(p) ensures that p is kept live until that point.
|
|
//go:noescape
|
|
func use(p unsafe.Pointer)
|