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add initial support for _mi_prim_reuse and MADV_FREE_REUSABLE on macOS (issue #1097)

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Daan 2025-06-06 17:59:46 -07:00
parent 2d34956bed
commit d389819cc9
8 changed files with 64 additions and 7 deletions
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11
src/os.c
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@ -512,6 +512,17 @@ bool _mi_os_reset(void* addr, size_t size) {
}
void _mi_os_reuse( void* addr, size_t size ) {
// page align conservatively within the range
size_t csize = 0;
void* const start = mi_os_page_align_area_conservative(addr, size, &csize);
if (csize == 0) return;
const int err = _mi_prim_reuse(start, csize);
if (err != 0) {
_mi_warning_message("cannot reuse OS memory (error: %d (0x%x), address: %p, size: 0x%zx bytes)\n", err, err, start, csize);
}
}
// either resets or decommits memory, returns true if the memory needs
// to be recommitted if it is to be re-used later on.
bool _mi_os_purge_ex(void* p, size_t size, bool allow_reset, size_t stat_size)