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authorAdin Scannell <ascannell@google.com>2019-07-02 19:27:51 -0700
committergVisor bot <gvisor-bot@google.com>2019-07-02 19:28:59 -0700
commit753da9604efc74dced3055bb2f5c6bef2d98fe6c (patch)
tree3974683f3e636cbcf636aa337170b94cef64890d /pkg/tcpip/hash
parent3f14caeb999f5b93699c46925cbeeee61ec74a86 (diff)
Remove map from fd_map, change to fd_table.
This renames FDMap to FDTable and drops the kernel.FD type, which had an entire package to itself and didn't serve much use (it was freely cast between types, and served as more of an annoyance than providing any protection.) Based on BenchmarkFDLookupAndDecRef-12, we can expect 5-10 ns per lookup operation, and 10-15 ns per concurrent lookup operation of savings. This also fixes two tangential usage issues with the FDMap. Namely, non-atomic use of NewFDFrom and associated calls to Remove (that are both racy and fail to drop the reference on the underlying file.) PiperOrigin-RevId: 256285890
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