| // Copyright 2018 The gVisor Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package state |
| |
| import ( |
| "reflect" |
| "unsafe" |
| ) |
| |
| // arrayFromSlice constructs a new pointer to the slice data. |
| // |
| // It would be similar to the following: |
| // |
| // x := make([]Foo, l, c) |
| // a := ([l]Foo*)(unsafe.Pointer(x[0])) |
| // |
| func arrayFromSlice(obj reflect.Value) reflect.Value { |
| return reflect.NewAt( |
| reflect.ArrayOf(obj.Cap(), obj.Type().Elem()), |
| unsafe.Pointer(obj.Pointer())) |
| } |
