diff options
Diffstat (limited to 'include/salticidae/queue.h')
| -rw-r--r-- | include/salticidae/queue.h | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/include/salticidae/queue.h b/include/salticidae/queue.h index 9fd11f1..899a082 100644 --- a/include/salticidae/queue.h +++ b/include/salticidae/queue.h @@ -9,6 +9,7 @@ namespace salticidae { static size_t const cacheline_size = 64; +using cacheline_pad = uint8_t[cacheline_size]; class FreeList { public: @@ -21,7 +22,7 @@ class FreeList { }; private: - alignas(cacheline_size) std::atomic<Node *> top; + std::atomic<Node *> top; public: FreeList(): top(nullptr) {} @@ -92,8 +93,9 @@ template<typename T> class MPMCQueue { protected: struct Block: public FreeList::Node { - alignas(cacheline_size) std::atomic<uint32_t> head; - alignas(cacheline_size) std::atomic<uint32_t> tail; + std::atomic<uint32_t> head; + cacheline_pad _pad0; + std::atomic<uint32_t> tail; T elem[MPMCQ_SIZE]; std::atomic<bool> avail[MPMCQ_SIZE]; std::atomic<Block *> next; @@ -101,8 +103,9 @@ class MPMCQueue { FreeList blks; - alignas(cacheline_size) std::atomic<Block *> head; - alignas(cacheline_size) std::atomic<Block *> tail; + std::atomic<Block *> head; + cacheline_pad _pad0; + std::atomic<Block *> tail; template<typename U> bool _enqueue(U &&e, bool unbounded = true) { |