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move arena_t definition to types.h

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Daan 2025-03-14 10:22:08 -07:00
parent a0a22d954b
commit f735e6e6b5
4 changed files with 123 additions and 107 deletions
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67
src/os.c
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@ -97,6 +97,73 @@ void* _mi_os_get_aligned_hint(size_t try_alignment, size_t size) {
}
/* -----------------------------------------------------------
Guard page allocation
----------------------------------------------------------- */
// In secure mode, return the size of a guard page, otherwise 0
size_t _mi_os_secure_guard_page_size(void) {
#if MI_SECURE > 0
return _mi_os_guard_page_size();
#else
return 0;
#endif
}
// In secure mode, try to decommit an area and output a warning if this fails.
bool _mi_os_secure_guard_page_set_at(void* addr, mi_memid_t memid) {
if (addr == NULL) return true;
#if MI_SECURE > 0
bool ok = false;
if (!memid.is_pinned) {
mi_arena_t* const arena = mi_memid_arena(memid);
if (arena != NULL && arena->commit_fun != NULL) {
ok = (*(arena->commit_fun))(false /* decommit */, addr, _mi_os_secure_guard_page_size(), NULL, arena->commit_fun_arg);
}
else {
ok = _mi_os_decommit(addr, _mi_os_secure_guard_page_size());
}
}
if (!ok) {
_mi_error_message(EINVAL, "secure level %d, but failed to commit guard page (at %p of size %zu)\n", MI_SECURE, addr, _mi_os_secure_guard_page_size());
}
return ok;
#else
MI_UNUSED(memid);
return true;
#endif
}
// In secure mode, try to decommit an area and output a warning if this fails.
bool _mi_os_secure_guard_page_set_before(void* addr, mi_memid_t memid) {
return _mi_os_secure_guard_page_set_at((uint8_t*)addr - _mi_os_secure_guard_page_size(), memid);
}
// In secure mode, try to recommit an area
bool _mi_os_secure_guard_page_reset_at(void* addr, mi_memid_t memid) {
if (addr == NULL) return true;
#if MI_SECURE > 0
if (!memid.is_pinned) {
mi_arena_t* const arena = mi_memid_arena(memid);
if (arena != NULL && arena->commit_fun != NULL) {
return (*(arena->commit_fun))(true, addr, _mi_os_secure_guard_page_size(), NULL, arena->commit_fun_arg);
}
else {
return _mi_os_commit(addr, _mi_os_secure_guard_page_size(), NULL);
}
}
#else
MI_UNUSED(memid);
#endif
return true;
}
// In secure mode, try to recommit an area
bool _mi_os_secure_guard_page_reset_before(void* addr, mi_memid_t memid) {
return _mi_os_secure_guard_page_reset_at((uint8_t*)addr - _mi_os_secure_guard_page_size(), memid);
}
/* -----------------------------------------------------------
Free memory
-------------------------------------------------------------- */