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45 lines
1005 B
45 lines
1005 B
// Copyright 2013 Prometheus Team |
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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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package utility |
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type FreeList chan interface{} |
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func NewFreeList(cap int) FreeList { |
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return make(FreeList, cap) |
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} |
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func (l FreeList) Get() (interface{}, bool) { |
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select { |
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case v := <-l: |
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return v, true |
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default: |
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return nil, false |
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} |
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} |
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func (l FreeList) Give(v interface{}) bool { |
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select { |
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case l <- v: |
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return true |
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default: |
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return false |
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} |
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} |
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func (l FreeList) Close() { |
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close(l) |
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for _ = range l { |
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} |
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}
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