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The epoch_drain_callbacks() function is used to drain all pending callbacks which have been invoked by prior epoch_call() function calls on the same epoch. This function is useful when there are shared memory structure(s) referred to by the epoch callback(s) which are not refcounted and are rarely freed. The typical place for calling this function is right before freeing or invalidating the shared resource(s) used by the epoch callback(s). This function can sleep and is not optimized for performance. Differential Revision: https://reviews.freebsd.org/D20109 MFC after: 1 week Sponsored by: Mellanox Technologies |
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