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Merge f58d34fe28 into 2e6ab0f230

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Jim Huang 2023-03-13 09:55:05 +09:00 • committed by GitHub
commit 285bc7a5a1
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25
include/mimalloc-internal.h
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@ -17,7 +17,30 @@ terms of the MIT license. A copy of the license can be found in the file
#define mi_trace_message(...)
#endif
#define MI_CACHE_LINE 64
// Determine system L1 cache line size at compile time for purposes of alignment.
#ifndef MI_CACHE_LINE
#if defined(__i386__) || defined(__x86_64__)
#define MI_CACHE_LINE 64
#elif defined(__aarch64__)
// FIXME: read special register ctr_el0 to get L1 dcache size.
#define MI_CACHE_LINE 64
#elif defined(__arm__)
// The cache line sizes for Arm depend on implementations, not architectures.
// There are even implementations with cache line sizes configurable at boot time.
#if __ARM_ARCH__ == 7
#define MI_CACHE_LINE 64
#else
// TODO: list known Arm implementations
#define MI_CACHE_LINE 32
#endif
#endif
#endif
#ifndef MI_CACHE_LINE
// A reasonable default value
#define MI_CACHE_LINE 64
#endif
#if defined(_MSC_VER)
#pragma warning(disable:4127) // suppress constant conditional warning (due to MI_SECURE paths)
#pragma warning(disable:26812) // unscoped enum warning