Bugs item #2872063, was opened at 2009-10-02 16:37
Message generated for change (Tracker Item Submitted) made by nradov
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Nick Radov (nradov)
Assigned to: Nobody/Anonymous (nobody)
Summary: False+: NonThreadSafeSingleton with static volatile field
Initial Comment:
This code generates the NonThreadSafeSingleton warning. I think it is essentially the same as bug 2826119, except here it applies to a static method. Use of the volatile modifier makes this code thread safe in Java 5.0 and above.
class NonThreadSafeSingleton {
private static volatile Object bar = null;
static Object foo() {
if (bar == null) {
synchronized (NonThreadSafeSingleton.class) {
if (bar == null) {
bar = new Object();
}
}
}
return bar;
}
}
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