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improved accounting of committed bytes (issue #1035)

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Daan 2025-03-19 18:50:53 -07:00
parent 9a35bca556
commit 26fa8be427
6 changed files with 119 additions and 26 deletions
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16
include/mimalloc/internal.h
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@ -127,6 +127,7 @@ bool _mi_os_has_virtual_reserve(void);
bool _mi_os_reset(void* addr, size_t size);
bool _mi_os_commit(void* p, size_t size, bool* is_zero);
bool _mi_os_commit_ex(void* addr, size_t size, bool* is_zero, size_t stat_size);
bool _mi_os_decommit(void* addr, size_t size);
bool _mi_os_protect(void* addr, size_t size);
bool _mi_os_unprotect(void* addr, size_t size);
@ -947,6 +948,21 @@ static inline size_t mi_bsr(size_t x) {
return (x==0 ? MI_SIZE_BITS : MI_SIZE_BITS - 1 - mi_clz(x));
}
size_t _mi_popcount_generic(size_t x);
static inline size_t mi_popcount(size_t x) {
if (x<=1) return x;
if (x==SIZE_MAX) return MI_SIZE_BITS;
#if defined(__GNUC__)
#if (SIZE_MAX == ULONG_MAX)
return __builtin_popcountl(x);
#else
return __builtin_popcountll(x);
#endif
#else
return _mi_popcount_generic(x);
#endif
}
// ---------------------------------------------------------------------------------
// Provide our own `_mi_memcpy` for potential performance optimizations.