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| author |   Jonathan Neuschäfer <j.neuschaefer@gmx.net> | 2018-07-01 05:28:37 +0200 |
|---|---|---|
| committer | Jonathan Neuschäfer <j.neuschaefer@gmx.net> | 2018-07-01 05:31:58 +0200 |
| commit | 33794857f8fe95e3165cbd9cf1049f2c26c1b6e5 (patch) | |
| tree | 949f6249294334bb460ec687cb6844e7e9de1cf8 | |
| parent | mpmc_ptr_ring: reduce the memory barrier usage (diff) | |
| download | wireguard-monolithic-historical-33794857f8fe95e3165cbd9cf1049f2c26c1b6e5.tar.xz wireguard-monolithic-historical-33794857f8fe95e3165cbd9cf1049f2c26c1b6e5.zip | |
mpmc_ptr_ring: eliminate false sharing in struct mpmc_ptr_ring
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
| -rw-r--r-- | src/mpmc_ptr_ring.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/mpmc_ptr_ring.h b/src/mpmc_ptr_ring.h index d628ea0..2f5c4c8 100644 --- a/src/mpmc_ptr_ring.h +++ b/src/mpmc_ptr_ring.h @@ -40,13 +40,13 @@ struct mpmc_ptr_ring { size_t size; /* consumer_head: updated in dequeue; read in enqueue */ - atomic_long_t consumer_head; + atomic_long_t consumer_head ____cacheline_aligned_in_smp; /* producer_head: read and updated in enqueue */ - atomic_long_t producer_head; + atomic_long_t producer_head ____cacheline_aligned_in_smp; /* producer_tail: updated in enqueue, read in dequeue */ - atomic_long_t producer_tail; + atomic_long_t producer_tail ____cacheline_aligned_in_smp; }; static inline bool mpmc_ptr_ring_empty(struct mpmc_ptr_ring *r) |