testing static member - thread safe?

[=?Utf-8?B?YmJn?=]

If many thread needs to test if one field of static class is null,

if (StaticClass.fi eldA == null)

will it be thread safe and doesn't need thread synchronization ?

Bob

[Jon Skeet [C# MVP]]

Re: testing static member - thread safe?

On Sep 26, 9:06 am, bbg <b...@discussio ns.microsoft.co mwrote:

If many thread needs to test if one field of static class is null,
>
if (StaticClass.fi eldA == null)
>
will it be thread safe and doesn't need thread synchronization ?

Only if fieldA is either readonly (and initialized as part of the
class initialization for StaticClass) or volatile.

Otherwise you could end up seeing "stale" values.

Jon