What is this doing?
Create a semaphore for one (1) resource.
Create a serial queue.
If green light, run the block asynchronously, and set green light.
If red, do nothing.
Note that DISPATCHTIMENOW means "timeout=none", so it returns non zero immediately if light is not green.
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EmotiCODE - Snippets and Source Code Search Engine
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Channel Details:
- Title: EmotiCODE - Snippets and Source Code Search Engine
- Channel Number: 39665563
- Language: English
- Registered On: November 11, 2014, 7:49 pm
- Number of Articles: 7
- Latest Snapshot: November 11, 2014, 7:49 pm
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- Description: EmotiCODE is a code snippet search engine but mostly a place where developers can find help for...
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