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Remove calls to GC.KeepAlive

  • Artykuł

TypeName

RemoveCallsToGCKeepAlive

CheckId

CA2004

Category

Microsoft.Reliability

Breaking Change

Non Breaking

Cause

Classes use SafeHandle but still contain calls to GC.KeepAlive.

Rule Description

If converting to SafeHandle usage, remove all calls to GC.KeepAlive (object). In this case, classes should not have to call GC.KeepAlive,assuming they do not have a finalizer but rely on SafeHandle to finalize the OS handle for them. Even though the cost of leaving in a call to GC.KeepAlive might be negligible in terms of performance, the perception that a call to GC.KeepAlive is either necessary or sufficient to solve a lifetime issue that might no longer exist makes the code harder to maintain.

How to Fix Violations

Remove calls to GC.KeepAlive.

When to Suppress Warnings

You can suppress this warning only if it is not technically correct to convert to SafeHandle usage in your class.