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Merged Whippet into libguile/whippet

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Andy Wingo 2025-04-11 14:10:41 +02:00
commit db181e67ff
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22
libguile/whippet/src/gc-align.h Normal file
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#ifndef GC_ALIGN_H
#define GC_ALIGN_H
#ifndef GC_IMPL
#error internal header file, not part of API
#endif
#include <stdint.h>
static inline uintptr_t align_down(uintptr_t addr, size_t align) {
return addr & ~(align - 1);
}
static inline uintptr_t align_up(uintptr_t addr, size_t align) {
return align_down(addr + align - 1, align);
}
// Poor man's equivalent of std::hardware_destructive_interference_size.
#define AVOID_FALSE_SHARING 128
#define ALIGNED_TO_AVOID_FALSE_SHARING \
__attribute__((aligned(AVOID_FALSE_SHARING)))
#endif // GC_ALIGN_H