// Copyright 2019 The gVisor Authors. // // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. // +build go1.12 // +build !go1.15 // Check go:linkname function signatures when updating Go version. package sync import ( "unsafe" ) //go:linkname memmove runtime.memmove //go:noescape func memmove(to, from unsafe.Pointer, n uintptr) // Memmove is exported for SeqAtomicLoad/SeqAtomicTryLoad<T>, which can't // define it because go_generics can't update the go:linkname annotation. // Furthermore, go:linkname silently doesn't work if the local name is exported // (this is of course undocumented), which is why this indirection is // necessary. func Memmove(to, from unsafe.Pointer, n uintptr) { memmove(to, from, n) }