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// 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 pipe
import (
"unsafe"
"gvisor.dev/gvisor/pkg/atomicbitops"
)
func (p *pipe) write(idx uint64, v uint64) {
ptr := (*uint64)(unsafe.Pointer(&p.buffer[idx&offsetMask:][:8][0]))
*ptr = v
}
func (p *pipe) writeAtomic(idx uint64, v uint64) {
ptr := (*atomicbitops.Uint64)(unsafe.Pointer(&p.buffer[idx&offsetMask:][:8][0]))
ptr.Store(v)
}
func (p *pipe) readAtomic(idx uint64) uint64 {
ptr := (*atomicbitops.Uint64)(unsafe.Pointer(&p.buffer[idx&offsetMask:][:8][0]))
return ptr.Load()
}
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