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-rw-r--r--boost/context/detail/config.hpp11
1 files changed, 11 insertions, 0 deletions
diff --git a/boost/context/detail/config.hpp b/boost/context/detail/config.hpp
index 84dd238100..15d03574b1 100644
--- a/boost/context/detail/config.hpp
+++ b/boost/context/detail/config.hpp
@@ -104,4 +104,15 @@
# endif
#endif
+#if ! defined(BOOST_NO_CXX11_CONSTEXPR)
+// modern architectures have cachelines with 64byte length
+// ARM Cortex-A15 32/64byte, Cortex-A9 16/32/64bytes
+// MIPS 74K: 32byte, 4KEc: 16byte
+// ist should be safe to use 64byte for all
+static constexpr std::size_t cache_alignment{ 64 };
+static constexpr std::size_t cacheline_length{ 64 };
+// lookahead size for prefetching
+static constexpr std::size_t prefetch_stride{ 4 * cacheline_length };
+#endif
+
#endif // BOOST_CONTEXT_DETAIL_CONFIG_H