| handle | 安全句柄。 |
bool
true if the AtomicSafetyHandle is still valid, false otherwise.
Check if the AtomicSafetyHandle is still valid.
An AtomicSafetyHandle becomes invalid when the version number it stores no longer matches the version number of the associated entry in the safety system. This always happens when AtomicSafetyHandle.Release has been called on this handle, or on one of the other handles referencing the same memory region. It can also happen if this handle is using the secondary version and some handle has called AtomicSafetyHandle.CheckWriteAndBumpSecondaryVersion or AtomicSafetyHandle.SetBumpSecondaryVersionOnSchedule.
For more information about container version numbers, see Copying NativeContainer structures.