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I don't understand why this comment has been marked down, can anyone explain? Seems reasonable to me

Mark 909
– Mark 909

2010-11-26 15:11:50 +00:00
Commented Nov 26, 2010 at 15:11
@Mark 909: Because it's incorrect as explained in my comment. Just because the update is atomic doesn't mean the lock (or some other memory barrier) isn't required.

Jon Skeet
– Jon Skeet

2010-11-26 15:24:23 +00:00
Commented Nov 26, 2010 at 15:24
2

More specifically, if _status isn't marked volatile, other threads might not see the change in value right away. I had assumed it was already volatile when I wrote my answer, which is not the most brilliant assumption I've made. Anyway, it appears that volatile may not even accomplish what it's documented to, as per Jon Skeet's answer.

ShZ
– ShZ

2010-11-26 16:59:17 +00:00
Commented Nov 26, 2010 at 16:59

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