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commit page on demand

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This commit is contained in:
daanx 2024-12-23 18:33:37 -08:00
parent 9a7c0d443a
commit ba68810333
7 changed files with 69 additions and 25 deletions
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16
src/page.c
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@ -606,6 +606,18 @@ static void mi_page_extend_free(mi_heap_t* heap, mi_page_t* page) {
mi_assert_internal(extend > 0 && extend + page->capacity <= page->reserved);
mi_assert_internal(extend < (1UL<<16));
// commit on demand?
if (page->page_committed > 0) {
const size_t needed_size = (page->capacity + extend)*bsize;
if (needed_size > page->page_committed) {
size_t commit_size = _mi_align_up(needed_size, MI_PAGE_MIN_COMMIT_SIZE);
const size_t max_size = page->reserved * bsize;
if (commit_size > max_size) { commit_size = max_size; }
mi_assert(commit_size > page->page_committed);
_mi_os_commit(mi_page_start(page) + page->page_committed, commit_size - page->page_committed, NULL);
}
}
// and append the extend the free list
if (extend < MI_MIN_SLICES || MI_SECURE<3) { //!mi_option_is_enabled(mi_option_secure)) {
mi_page_free_list_extend(page, bsize, extend, &heap->tld->stats );
@ -635,8 +647,8 @@ void _mi_page_init(mi_heap_t* heap, mi_page_t* page) {
#endif
#if MI_DEBUG>2
if (page->memid.initially_zero) {
mi_track_mem_defined(page->page_start, page_size);
mi_assert_expensive(mi_mem_is_zero(page_start, page_size));
mi_track_mem_defined(page->page_start, (page->page_committed == 0 ? page_size : page->page_committed));
mi_assert_expensive(mi_mem_is_zero(page_start, (page->page_committed == 0 ? page_size : page->page_committed)));
}
#endif