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From Robert Egan <>
Subject RE: Collections: Double-Checked Locking
Date Thu, 16 Jan 2003 20:13:57 GMT
Try these java world articles for more info

-----Original Message-----
From: Tony Chao []
Sent: Thursday, January 16, 2003 2:59 PM
Subject: Collections: Double-Checked Locking


I just started using commons-collections package.
I noticed in the API there's a lot of warnings about doubled-checked locking
being broken.

If it's broken? Why does commons-collections still use it?

Is is theoretically broken, but works in most architectures in practice?

What are some architectures that it actually breaks on?



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