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adjust stats more clearly to avoid double counting commits

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daanx 2024-12-17 18:10:28 -08:00
parent 21c05019b7
commit 84bb1c2712
1 changed files with 18 additions and 15 deletions
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33
src/arena.c
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@ -234,12 +234,24 @@ static mi_decl_noinline void* mi_arena_try_alloc_at(
// commit requested, but the range may not be committed as a whole: ensure it is committed now
if (!mi_bitmap_is_setN(arena->slices_committed, slice_index, slice_count)) {
// not fully committed: commit the full range and set the commit bits
// (this may race and we may double-commit which is fine)
// we set the bits first since we own these slices (they are no longer free)
size_t already_committed_count = 0;
mi_bitmap_setN(arena->slices_committed, slice_index, slice_count, &already_committed_count);
// adjust the stats so we don't double count the commits
if (already_committed_count > 0) {
_mi_stat_adjust_decrease(&_mi_stats_main.committed, mi_size_of_slices(already_committed_count));
}
// now actually commit
bool commit_zero = false;
if (!_mi_os_commit(p, mi_size_of_slices(slice_count), &commit_zero)) {
// failed to commit (todo: give warning?)
if (already_committed_count > 0) {
_mi_stat_increase(&_mi_stats_main.committed, mi_size_of_slices(already_committed_count));
}
memid->initially_committed = false;
}
else {
// committed
if (commit_zero) { memid->initially_zero = true; }
#if MI_DEBUG > 1
if (memid->initially_zero) {
@ -248,13 +260,7 @@ static mi_decl_noinline void* mi_arena_try_alloc_at(
memid->initially_zero = false;
}
}
#endif
size_t already_committed_count = 0;
mi_bitmap_setN(arena->slices_committed, slice_index, slice_count, &already_committed_count);
if (already_committed_count < slice_count) {
// todo: also decrease total
mi_stat_decrease(_mi_stats_main.committed, mi_size_of_slices(already_committed_count));
}
#endif
}
}
if (memid->initially_zero) {
@ -798,7 +804,7 @@ void _mi_arena_page_free(mi_page_t* page) {
Arena abandon
----------------------------------------------------------- */
static void mi_arena_page_abandon_no_stat(mi_page_t* page) {
void _mi_arena_page_abandon(mi_page_t* page) {
mi_assert_internal(_mi_is_aligned(page, MI_PAGE_ALIGN));
mi_assert_internal(_mi_ptr_page(page)==page);
mi_assert_internal(mi_page_is_owned(page));
@ -827,12 +833,8 @@ static void mi_arena_page_abandon_no_stat(mi_page_t* page) {
// page is full (or a singleton), page is OS/externally allocated
// leave as is; it will be reclaimed when an object is free'd in the page
}
_mi_page_unown(page);
}
void _mi_arena_page_abandon(mi_page_t* page) {
mi_arena_page_abandon_no_stat(page);
_mi_stat_increase(&_mi_stats_main.pages_abandoned, 1);
_mi_page_unown(page);
}
bool _mi_arena_page_try_reabandon_to_mapped(mi_page_t* page) {
@ -849,7 +851,8 @@ bool _mi_arena_page_try_reabandon_to_mapped(mi_page_t* page) {
}
else {
_mi_stat_counter_increase(&_mi_stats_main.pages_reabandon_full, 1);
mi_arena_page_abandon_no_stat(page);
_mi_stat_adjust_decrease(&_mi_stats_main.pages_abandoned, 1); // adjust as we are not abandoning fresh
_mi_arena_page_abandon(page);
return true;
}
}