2018-07-09 21:03:03 +00:00
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// Copyright 2018 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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2018-04-27 17:37:02 +00:00
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package pipe
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import (
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"sync/atomic"
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"unsafe"
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)
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func (p *pipe) write(idx uint64, v uint64) {
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ptr := (*uint64)(unsafe.Pointer(&p.buffer[idx&offsetMask:][:8][0]))
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*ptr = v
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}
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func (p *pipe) writeAtomic(idx uint64, v uint64) {
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ptr := (*uint64)(unsafe.Pointer(&p.buffer[idx&offsetMask:][:8][0]))
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atomic.StoreUint64(ptr, v)
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}
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func (p *pipe) readAtomic(idx uint64) uint64 {
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ptr := (*uint64)(unsafe.Pointer(&p.buffer[idx&offsetMask:][:8][0]))
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return atomic.LoadUint64(ptr)
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}
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