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40 lines
1.6 KiB
40 lines
1.6 KiB
// |
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// ThreadHelper.swift |
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// Kingfisher |
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// |
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// Created by Wei Wang on 15/10/9. |
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// |
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// Copyright (c) 2018 Wei Wang <onevcat@gmail.com> |
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// |
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// Permission is hereby granted, free of charge, to any person obtaining a copy |
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// of this software and associated documentation files (the "Software"), to deal |
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// in the Software without restriction, including without limitation the rights |
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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// copies of the Software, and to permit persons to whom the Software is |
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// furnished to do so, subject to the following conditions: |
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// |
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// The above copyright notice and this permission notice shall be included in |
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// all copies or substantial portions of the Software. |
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// |
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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// THE SOFTWARE. |
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import Foundation |
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extension DispatchQueue { |
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// This method will dispatch the `block` to self. |
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// If `self` is the main queue, and current thread is main thread, the block |
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// will be invoked immediately instead of being dispatched. |
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func safeAsync(_ block: @escaping ()->()) { |
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if self === DispatchQueue.main && Thread.isMainThread { |
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block() |
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} else { |
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async { block() } |
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} |
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} |
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}
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