mirror of
https://github.com/microsoft/mimalloc.git
synced 2024-12-26 21:04:27 +08:00
wip: increase commit mask resolution
This commit is contained in:
daan
parent
c17878d1a7
commit
49c75a3157
@ -86,7 +86,7 @@ void _mi_arena_free(void* p, size_t size, size_t memid, bool is_committed,
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// "segment-cache.c"
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void* _mi_segment_cache_pop(size_t size, mi_commit_mask_t* commit_mask, bool* large, bool* is_pinned, bool* is_zero, size_t* memid, mi_os_tld_t* tld);
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bool _mi_segment_cache_push(void* start, size_t size, size_t memid, mi_commit_mask_t commit_mask, bool is_large, bool is_pinned, mi_os_tld_t* tld);
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bool _mi_segment_cache_push(void* start, size_t size, size_t memid, const mi_commit_mask_t* commit_mask, bool is_large, bool is_pinned, mi_os_tld_t* tld);
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void _mi_segment_map_allocated_at(const mi_segment_t* segment);
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void _mi_segment_map_freed_at(const mi_segment_t* segment);
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@ -691,77 +691,163 @@ static inline void mi_block_set_next(const mi_page_t* page, mi_block_t* block, c
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// commit mask
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// -------------------------------------------------------------------
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#define MI_COMMIT_MASK_BITS (sizeof(mi_commit_mask_t)*8)
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static inline mi_commit_mask_t mi_commit_mask_empty(void) {
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return 0;
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static inline void mi_commit_mask_create_empty(mi_commit_mask_t* cm) {
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memset(cm, 0, sizeof(*cm));
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}
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static inline mi_commit_mask_t mi_commit_mask_full(void) {
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return ~mi_commit_mask_empty();
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static inline void mi_commit_mask_create_full(mi_commit_mask_t* cm) {
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memset(cm, 0xFF, sizeof(*cm));
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}
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static inline mi_commit_mask_t mi_commit_mask_create(uintptr_t bitidx, uintptr_t bitcount) {
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static inline void mi_commit_mask_create(ptrdiff_t bitidx, ptrdiff_t bitcount, mi_commit_mask_t* cm) {
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mi_assert_internal(bitidx < MI_COMMIT_MASK_BITS);
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mi_assert_internal((bitidx + bitcount) <= MI_COMMIT_MASK_BITS);
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if (bitcount == MI_COMMIT_MASK_BITS) {
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mi_assert_internal(bitidx==0);
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return mi_commit_mask_full();
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mi_commit_mask_create_full(cm);
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}
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else if (bitcount == 0) {
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return mi_commit_mask_empty();
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mi_commit_mask_create_empty(cm);
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}
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else {
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return (((uintptr_t)1 << bitcount) - 1) << bitidx;
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mi_commit_mask_create_empty(cm);
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ptrdiff_t i = bitidx / MI_COMMIT_MASK_FIELD_BITS;
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ptrdiff_t ofs = bitidx % MI_COMMIT_MASK_FIELD_BITS;
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while (bitcount > 0) {
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mi_assert_internal(i < MI_COMMIT_MASK_N);
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ptrdiff_t avail = MI_COMMIT_MASK_FIELD_BITS - ofs;
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ptrdiff_t count = (bitcount > avail ? avail : bitcount);
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size_t mask = (((size_t)1 << count) - 1) << ofs;
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cm->mask[i] = mask;
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bitcount -= count;
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ofs = 0;
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i++;
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}
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}
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}
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static inline bool mi_commit_mask_is_empty(mi_commit_mask_t mask) {
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return (mask == 0);
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}
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static inline bool mi_commit_mask_is_full(mi_commit_mask_t mask) {
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return ((~mask) == 0);
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}
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static inline bool mi_commit_mask_all_set(mi_commit_mask_t commit, mi_commit_mask_t mask) {
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return ((commit & mask) == mask);
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}
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static inline bool mi_commit_mask_any_set(mi_commit_mask_t commit, mi_commit_mask_t mask) {
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return ((commit & mask) != 0);
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}
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mi_decl_nodiscard static inline mi_commit_mask_t mi_commit_mask_intersect(mi_commit_mask_t commit, mi_commit_mask_t mask) {
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return (commit & mask);
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}
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static inline void mi_commit_mask_clear(mi_commit_mask_t* commit, mi_commit_mask_t mask) {
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*commit = (*commit) & (~mask);
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}
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static inline void mi_commit_mask_set(mi_commit_mask_t* commit, mi_commit_mask_t mask) {
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*commit = (*commit) | mask;
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}
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static inline size_t mi_commit_mask_committed_size(mi_commit_mask_t mask, size_t total) {
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if (mi_commit_mask_is_full(mask)) {
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return total;
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static inline bool mi_commit_mask_is_empty(const mi_commit_mask_t* cm) {
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for (ptrdiff_t i = 0; i < MI_COMMIT_MASK_N; i++) {
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if (cm->mask[i] != 0) return false;
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}
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else if (mi_commit_mask_is_empty(mask)) {
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return true;
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}
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static inline bool mi_commit_mask_is_full(const mi_commit_mask_t* cm) {
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for (ptrdiff_t i = 0; i < MI_COMMIT_MASK_N; i++) {
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if (cm->mask[i] != 0) return false;
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}
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return true;
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}
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static inline bool mi_commit_mask_all_set(const mi_commit_mask_t* commit, const mi_commit_mask_t* cm) {
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for (ptrdiff_t i = 0; i < MI_COMMIT_MASK_N; i++) {
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if ((commit->mask[i] & cm->mask[i]) != cm->mask[i]) return false;
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}
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return true;
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}
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static inline bool mi_commit_mask_any_set(const mi_commit_mask_t* commit, const mi_commit_mask_t* cm) {
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for (ptrdiff_t i = 0; i < MI_COMMIT_MASK_N; i++) {
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if ((commit->mask[i] & cm->mask[i]) != 0) return true;
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}
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return false;
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}
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static inline void mi_commit_mask_create_intersect(const mi_commit_mask_t* commit, const mi_commit_mask_t* cm, mi_commit_mask_t* res) {
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for (ptrdiff_t i = 0; i < MI_COMMIT_MASK_N; i++) {
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res->mask[i] = (commit->mask[i] & cm->mask[i]);
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}
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}
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static inline void mi_commit_mask_clear(mi_commit_mask_t* res, const mi_commit_mask_t* cm) {
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for (ptrdiff_t i = 0; i < MI_COMMIT_MASK_N; i++) {
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res->mask[i] &= ~(cm->mask[i]);
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}
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}
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static inline void mi_commit_mask_set(mi_commit_mask_t* res, const mi_commit_mask_t* cm) {
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for (ptrdiff_t i = 0; i < MI_COMMIT_MASK_N; i++) {
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res->mask[i] |= cm->mask[i];
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}
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}
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static inline size_t mi_commit_mask_committed_size(const mi_commit_mask_t* cm, size_t total) {
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mi_assert_internal((total%MI_COMMIT_MASK_BITS)==0);
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size_t count = 0;
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for (ptrdiff_t i = 0; i < MI_COMMIT_MASK_N; i++) {
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size_t mask = cm->mask[i];
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if (~mask == 0) {
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count += MI_COMMIT_MASK_FIELD_BITS;
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}
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else {
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for (; mask != 0; mask >>= 1) { // todo: use popcount
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if ((mask&1)!=0) count++;
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}
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}
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}
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// we use total since for huge segments each commit bit may represent a larger size
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return (total / MI_COMMIT_MASK_BITS)* count;
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}
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static inline ptrdiff_t mi_commit_mask_next_run(const mi_commit_mask_t* cm, ptrdiff_t* idx ) {
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ptrdiff_t i = (*idx) / MI_COMMIT_MASK_FIELD_BITS;
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ptrdiff_t ofs = (*idx) % MI_COMMIT_MASK_FIELD_BITS;
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size_t mask = 0;
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// find first ones
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while (i < MI_COMMIT_MASK_N) {
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mask = cm->mask[i];
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mask >>= ofs;
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if (mask != 0) {
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while ((mask&1) == 0) {
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mask >>= 1;
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ofs++;
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}
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break;
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}
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i++;
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ofs = 0;
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}
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if (i >= MI_COMMIT_MASK_N) {
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// not found
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*idx = MI_COMMIT_MASK_BITS;
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return 0;
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}
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else {
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size_t count = 0;
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for (; mask != 0; mask >>= 1) { // todo: use popcount
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if ((mask&1)!=0) count++;
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}
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return (total/MI_COMMIT_MASK_BITS)*count;
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// found, count ones
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ptrdiff_t count = 0;
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*idx = (i*MI_COMMIT_MASK_FIELD_BITS) + ofs;
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mi_assert_internal(ofs < MI_COMMIT_MASK_FIELD_BITS && (mask&1) == 1);
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do {
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do {
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count++;
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mask >>= 1;
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} while (mask != 0);
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if ((((count + ofs) % MI_COMMIT_MASK_FIELD_BITS) == 0)) {
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i++;
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if (i >= MI_COMMIT_MASK_N) break;
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mask = cm->mask[i];
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if ((mask&1)==0) break;
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ofs = 0;
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}
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} while (mask != 0);
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mi_assert_internal(count > 0);
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return count;
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}
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}
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#define mi_commit_mask_foreach(cm,idx,count) \
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idx = 0; \
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while ((count = mi_commit_mask_next_run(cm,&idx)) > 0) {
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#define mi_commit_mask_foreach_end() \
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idx += count; \
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}
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#define mi_commit_mask_foreach(mask,idx,count) \
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#define xmi_commit_mask_foreach(mask,idx,count) \
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idx = 0; \
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while (mask != 0) { \
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/* count ones */ \
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@ -773,7 +859,7 @@ static inline size_t mi_commit_mask_committed_size(mi_commit_mask_t mask, size_t
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/* if found, do action */ \
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if (count > 0) {
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#define mi_commit_mask_foreach_end() \
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#define xmi_commit_mask_foreach_end() \
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} \
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idx += count; \
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/* shift out the zero */ \
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@ -83,9 +83,9 @@ terms of the MIT license. A copy of the license can be found in the file
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// or otherwise one might define an intptr_t type that is larger than a pointer...
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// ------------------------------------------------------
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#if INTPTR_MAX == 9223372036854775807LL
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#if INTPTR_MAX == INT64_MAX
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# define MI_INTPTR_SHIFT (3)
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#elif INTPTR_MAX == 2147483647LL
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#elif INTPTR_MAX == INT32_MAX
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# define MI_INTPTR_SHIFT (2)
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#else
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#error platform must be 32 or 64 bits
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@ -94,6 +94,18 @@ terms of the MIT license. A copy of the license can be found in the file
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#define MI_INTPTR_SIZE (1<<MI_INTPTR_SHIFT)
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#define MI_INTPTR_BITS (MI_INTPTR_SIZE*8)
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#if SIZE_MAX == UINT64_MAX
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# define MI_SIZE_SHIFT (3)
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#elif SIZE_MAX == UINT32_MAX
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# define MI_SIZE_SHIFT (2)
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#else
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#error platform must be 32 or 64 bits
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#endif
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#define MI_SIZE_SIZE (1<<MI_INTPTR_SHIFT)
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#define MI_SIZE_BITS (MI_INTPTR_SIZE*8)
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#define KiB ((size_t)1024)
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#define MiB (KiB*KiB)
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#define GiB (MiB*KiB)
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@ -275,17 +287,22 @@ typedef enum mi_segment_kind_e {
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MI_SEGMENT_HUGE, // > MI_LARGE_SIZE_MAX segment with just one huge page inside.
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} mi_segment_kind_t;
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#define MI_COMMIT_SIZE (MI_SEGMENT_SIZE/MI_INTPTR_BITS)
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#define MI_COMMIT_SIZE (128*1024)
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#define MI_COMMIT_MASK_BITS (MI_SEGMENT_SIZE / MI_COMMIT_SIZE)
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#define MI_COMMIT_MASK_FIELD_BITS MI_SIZE_BITS
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#define MI_COMMIT_MASK_N (MI_COMMIT_MASK_BITS / MI_COMMIT_MASK_FIELD_BITS)
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#if (((1 << MI_SEGMENT_SHIFT)/MI_COMMIT_SIZE) > 8*MI_INTPTR_SIZE)
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#error "not enough commit bits to cover the segment size"
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#if (MI_COMMIT_MASK_BITS != (MI_COMMIT_MASK_N * MI_COMMIT_MASK_FIELD_BITS))
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#error "the segment size must be exactly divisible by the (commit size * size_t bits)"
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#endif
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typedef mi_page_t mi_slice_t;
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typedef struct mi_commit_mask_s {
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size_t mask[MI_COMMIT_MASK_N];
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} mi_commit_mask_t;
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typedef mi_page_t mi_slice_t;
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typedef int64_t mi_msecs_t;
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typedef uintptr_t mi_commit_mask_t;
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// Segments are large allocated memory blocks (8mb on 64 bit) from
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// the OS. Inside segments we allocated fixed size _pages_ that
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@ -66,7 +66,7 @@ static mi_option_desc_t options[_mi_option_last] =
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{ 0, UNINIT, MI_OPTION(verbose) },
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// the following options are experimental and not all combinations make sense.
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{ 1, UNINIT, MI_OPTION(eager_commit) }, // commit per segment directly (8MiB) (but see also `eager_commit_delay`)
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{ 0, UNINIT, MI_OPTION(eager_commit) }, // commit per segment directly (8MiB) (but see also `eager_commit_delay`)
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#if defined(_WIN32) || (MI_INTPTR_SIZE <= 4) // and other OS's without overcommit?
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{ 0, UNINIT, MI_OPTION(eager_region_commit) },
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{ 0, UNINIT, MI_OPTION(reset_decommits) }, // reset decommits memory
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@ -89,7 +89,7 @@ static mi_option_desc_t options[_mi_option_last] =
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{ 1, UNINIT, MI_OPTION(eager_commit_delay) }, // the first N segments per thread are not eagerly committed (but per page in the segment on demand)
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#endif
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{ 1, UNINIT, MI_OPTION(allow_decommit) }, // decommit slices when no longer used (after reset_delay milli-seconds)
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{ 500, UNINIT, MI_OPTION(reset_delay) }, // page reset delay in milli-seconds (= decommit)
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{ 10, UNINIT, MI_OPTION(reset_delay) }, // page reset delay in milli-seconds (= decommit)
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{ 1000, UNINIT, MI_OPTION(segment_decommit_delay) },// decommit delay in milli-seconds for freed segments
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{ 0, UNINIT, MI_OPTION(use_numa_nodes) }, // 0 = use available numa nodes, otherwise use at most N nodes.
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{ 0, UNINIT, MI_OPTION(limit_os_alloc) }, // 1 = do not use OS memory for allocation (but only reserved arenas)
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@ -76,11 +76,10 @@ mi_decl_noinline void* _mi_segment_cache_pop(size_t size, mi_commit_mask_t* comm
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*memid = slot->memid;
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*is_pinned = slot->is_pinned;
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*is_zero = false;
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mi_commit_mask_t cmask = slot->commit_mask; // copy
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*commit_mask = slot->commit_mask;
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slot->p = NULL;
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mi_atomic_storei64_release(&slot->expire,(mi_msecs_t)0);
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*commit_mask = cmask;
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// mark the slot as free again
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mi_assert_internal(_mi_bitmap_is_claimed(cache_inuse, MI_CACHE_FIELDS, 1, bitidx));
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_mi_bitmap_unclaim(cache_inuse, MI_CACHE_FIELDS, 1, bitidx);
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@ -90,27 +89,26 @@ mi_decl_noinline void* _mi_segment_cache_pop(size_t size, mi_commit_mask_t* comm
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static mi_decl_noinline void mi_commit_mask_decommit(mi_commit_mask_t* cmask, void* p, size_t total, mi_stats_t* stats)
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{
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if (mi_commit_mask_is_empty(*cmask)) {
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if (mi_commit_mask_is_empty(cmask)) {
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// nothing
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}
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else if (mi_commit_mask_is_full(*cmask)) {
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else if (mi_commit_mask_is_full(cmask)) {
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_mi_os_decommit(p, total, stats);
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}
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else {
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// todo: one call to decommit the whole at once?
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mi_assert_internal((total%MI_COMMIT_MASK_BITS)==0);
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size_t part = total/MI_COMMIT_MASK_BITS;
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uintptr_t idx;
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uintptr_t count;
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mi_commit_mask_t mask = *cmask;
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mi_commit_mask_foreach(mask, idx, count) {
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ptrdiff_t idx;
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ptrdiff_t count;
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mi_commit_mask_foreach(cmask, idx, count) {
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void* start = (uint8_t*)p + (idx*part);
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size_t size = count*part;
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_mi_os_decommit(start, size, stats);
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}
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mi_commit_mask_foreach_end()
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}
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*cmask = mi_commit_mask_empty();
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mi_commit_mask_create_empty(cmask);
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}
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#define MI_MAX_PURGE_PER_PUSH (4)
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@ -135,7 +133,7 @@ static mi_decl_noinline void mi_segment_cache_purge(mi_os_tld_t* tld)
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if (expire != 0 && now >= expire) { // safe read
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// still expired, decommit it
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mi_atomic_storei64_relaxed(&slot->expire,(mi_msecs_t)0);
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mi_assert_internal(!mi_commit_mask_is_empty(slot->commit_mask) && _mi_bitmap_is_claimed(cache_available_large, MI_CACHE_FIELDS, 1, bitidx));
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mi_assert_internal(!mi_commit_mask_is_empty(&slot->commit_mask) && _mi_bitmap_is_claimed(cache_available_large, MI_CACHE_FIELDS, 1, bitidx));
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_mi_abandoned_await_readers(); // wait until safe to decommit
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// decommit committed parts
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// TODO: instead of decommit, we could also free to the OS?
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@ -148,7 +146,7 @@ static mi_decl_noinline void mi_segment_cache_purge(mi_os_tld_t* tld)
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}
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}
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mi_decl_noinline bool _mi_segment_cache_push(void* start, size_t size, size_t memid, mi_commit_mask_t commit_mask, bool is_large, bool is_pinned, mi_os_tld_t* tld)
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mi_decl_noinline bool _mi_segment_cache_push(void* start, size_t size, size_t memid, const mi_commit_mask_t* commit_mask, bool is_large, bool is_pinned, mi_os_tld_t* tld)
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{
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#ifdef MI_CACHE_DISABLE
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return false;
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@ -187,7 +185,7 @@ mi_decl_noinline bool _mi_segment_cache_push(void* start, size_t size, size_t me
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slot->memid = memid;
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slot->is_pinned = is_pinned;
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mi_atomic_storei64_relaxed(&slot->expire,(mi_msecs_t)0);
|
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slot->commit_mask = commit_mask;
|
||||
slot->commit_mask = *commit_mask;
|
||||
if (!mi_commit_mask_is_empty(commit_mask) && !is_large && !is_pinned && mi_option_is_enabled(mi_option_allow_decommit)) {
|
||||
long delay = mi_option_get(mi_option_segment_decommit_delay);
|
||||
if (delay == 0) {
|
||||
|
||||
135
src/segment.c
135
src/segment.c
@ -127,7 +127,7 @@ static bool mi_segment_is_valid(mi_segment_t* segment, mi_segments_tld_t* tld) {
|
||||
mi_assert_internal(_mi_ptr_cookie(segment) == segment->cookie);
|
||||
mi_assert_internal(segment->abandoned <= segment->used);
|
||||
mi_assert_internal(segment->thread_id == 0 || segment->thread_id == _mi_thread_id());
|
||||
mi_assert_internal(mi_commit_mask_all_set(segment->commit_mask, segment->decommit_mask)); // can only decommit committed blocks
|
||||
mi_assert_internal(mi_commit_mask_all_set(&segment->commit_mask, &segment->decommit_mask)); // can only decommit committed blocks
|
||||
//mi_assert_internal(segment->segment_info_size % MI_SEGMENT_SLICE_SIZE == 0);
|
||||
mi_slice_t* slice = &segment->slices[0];
|
||||
const mi_slice_t* end = mi_segment_slices_end(segment);
|
||||
@ -256,8 +256,8 @@ static void mi_segment_os_free(mi_segment_t* segment, mi_segments_tld_t* tld) {
|
||||
|
||||
// _mi_os_free(segment, mi_segment_size(segment), /*segment->memid,*/ tld->stats);
|
||||
const size_t size = mi_segment_size(segment);
|
||||
if (size != MI_SEGMENT_SIZE || !_mi_segment_cache_push(segment, size, segment->memid, segment->commit_mask, segment->mem_is_large, segment->mem_is_pinned, tld->os)) {
|
||||
const size_t csize = mi_commit_mask_committed_size(segment->commit_mask, size);
|
||||
if (size != MI_SEGMENT_SIZE || !_mi_segment_cache_push(segment, size, segment->memid, &segment->commit_mask, segment->mem_is_large, segment->mem_is_pinned, tld->os)) {
|
||||
const size_t csize = mi_commit_mask_committed_size(&segment->commit_mask, size);
|
||||
if (csize > 0 && !segment->mem_is_pinned) _mi_stat_decrease(&_mi_stats_main.committed, csize);
|
||||
_mi_abandoned_await_readers(); // wait until safe to free
|
||||
_mi_arena_free(segment, mi_segment_size(segment), segment->memid, segment->mem_is_pinned /* pretend not committed to not double count decommits */, tld->os);
|
||||
@ -331,74 +331,85 @@ void _mi_segment_thread_collect(mi_segments_tld_t* tld) {
|
||||
Span management
|
||||
----------------------------------------------------------- */
|
||||
|
||||
static mi_commit_mask_t mi_segment_commit_mask(mi_segment_t* segment, bool conservative, uint8_t* p, size_t size, uint8_t** start_p, size_t* full_size) {
|
||||
mi_assert_internal(_mi_ptr_segment(p) == segment);
|
||||
if (size == 0 || size > MI_SEGMENT_SIZE) return 0;
|
||||
if (p >= (uint8_t*)segment + mi_segment_size(segment)) return 0;
|
||||
static ptrdiff_t _mi_aligni_up(ptrdiff_t sz, size_t alignment) {
|
||||
return (ptrdiff_t)_mi_align_up(sz, alignment);
|
||||
}
|
||||
|
||||
uintptr_t diff = (p - (uint8_t*)segment);
|
||||
uintptr_t start;
|
||||
uintptr_t end;
|
||||
static ptrdiff_t _mi_aligni_down(ptrdiff_t sz, size_t alignment) {
|
||||
return (ptrdiff_t)_mi_align_down(sz, alignment);
|
||||
}
|
||||
|
||||
static void mi_segment_commit_mask(mi_segment_t* segment, bool conservative, uint8_t* p, size_t size, uint8_t** start_p, size_t* full_size, mi_commit_mask_t* cm) {
|
||||
mi_assert_internal(_mi_ptr_segment(p) == segment);
|
||||
mi_commit_mask_create_empty(cm);
|
||||
if (size == 0 || size > MI_SEGMENT_SIZE) return;
|
||||
if (p >= (uint8_t*)segment + mi_segment_size(segment)) return;
|
||||
|
||||
ptrdiff_t diff = (p - (uint8_t*)segment);
|
||||
ptrdiff_t start;
|
||||
ptrdiff_t end;
|
||||
if (conservative) {
|
||||
start = _mi_align_up(diff, MI_COMMIT_SIZE);
|
||||
end = _mi_align_down(diff + size, MI_COMMIT_SIZE);
|
||||
start = _mi_aligni_up(diff, MI_COMMIT_SIZE);
|
||||
end = _mi_aligni_down(diff + size, MI_COMMIT_SIZE);
|
||||
}
|
||||
else {
|
||||
start = _mi_align_down(diff, MI_COMMIT_SIZE);
|
||||
end = _mi_align_up(diff + size, MI_COMMIT_SIZE);
|
||||
start = _mi_aligni_down(diff, MI_COMMIT_SIZE);
|
||||
end = _mi_aligni_up(diff + size, MI_COMMIT_SIZE);
|
||||
}
|
||||
|
||||
mi_assert_internal(start % MI_COMMIT_SIZE==0 && end % MI_COMMIT_SIZE == 0);
|
||||
*start_p = (uint8_t*)segment + start;
|
||||
*full_size = (end > start ? end - start : 0);
|
||||
if (*full_size == 0) return 0;
|
||||
if (*full_size == 0) return;
|
||||
|
||||
uintptr_t bitidx = start / MI_COMMIT_SIZE;
|
||||
mi_assert_internal(bitidx < (MI_INTPTR_SIZE*8));
|
||||
ptrdiff_t bitidx = start / MI_COMMIT_SIZE;
|
||||
mi_assert_internal(bitidx < MI_COMMIT_MASK_BITS);
|
||||
|
||||
uintptr_t bitcount = *full_size / MI_COMMIT_SIZE; // can be 0
|
||||
if (bitidx + bitcount > MI_INTPTR_SIZE*8) {
|
||||
ptrdiff_t bitcount = *full_size / MI_COMMIT_SIZE; // can be 0
|
||||
if (bitidx + bitcount > MI_COMMIT_MASK_BITS) {
|
||||
_mi_warning_message("commit mask overflow: %zu %zu %zu %zu 0x%p %zu\n", bitidx, bitcount, start, end, p, size);
|
||||
}
|
||||
mi_assert_internal((bitidx + bitcount) <= (MI_INTPTR_SIZE*8));
|
||||
|
||||
return mi_commit_mask_create(bitidx, bitcount);
|
||||
mi_assert_internal((bitidx + bitcount) <= MI_COMMIT_MASK_BITS);
|
||||
mi_commit_mask_create(bitidx, bitcount, cm);
|
||||
}
|
||||
|
||||
static bool mi_segment_commitx(mi_segment_t* segment, bool commit, uint8_t* p, size_t size, mi_stats_t* stats) {
|
||||
// commit liberal, but decommit conservative
|
||||
uint8_t* start;
|
||||
size_t full_size;
|
||||
mi_commit_mask_t mask = mi_segment_commit_mask(segment,!commit/*conservative*/,p,size,&start,&full_size);
|
||||
if (mi_commit_mask_is_empty(mask) || full_size==0) return true;
|
||||
mi_commit_mask_t mask;
|
||||
mi_segment_commit_mask(segment, !commit/*conservative*/, p, size, &start, &full_size, &mask);
|
||||
if (mi_commit_mask_is_empty(&mask) || full_size==0) return true;
|
||||
|
||||
if (commit && !mi_commit_mask_all_set(segment->commit_mask, mask)) {
|
||||
if (commit && !mi_commit_mask_all_set(&segment->commit_mask, &mask)) {
|
||||
bool is_zero = false;
|
||||
mi_commit_mask_t cmask = mi_commit_mask_intersect(segment->commit_mask, mask);
|
||||
_mi_stat_decrease(&_mi_stats_main.committed, mi_commit_mask_committed_size(cmask, MI_SEGMENT_SIZE)); // adjust for overlap
|
||||
mi_commit_mask_t cmask;
|
||||
mi_commit_mask_create_intersect(&segment->commit_mask, &mask, &cmask);
|
||||
_mi_stat_decrease(&_mi_stats_main.committed, mi_commit_mask_committed_size(&cmask, MI_SEGMENT_SIZE)); // adjust for overlap
|
||||
if (!_mi_os_commit(start,full_size,&is_zero,stats)) return false;
|
||||
mi_commit_mask_set(&segment->commit_mask,mask);
|
||||
mi_commit_mask_set(&segment->commit_mask, &mask);
|
||||
}
|
||||
else if (!commit && mi_commit_mask_any_set(segment->commit_mask,mask)) {
|
||||
else if (!commit && mi_commit_mask_any_set(&segment->commit_mask, &mask)) {
|
||||
mi_assert_internal((void*)start != (void*)segment);
|
||||
mi_commit_mask_t cmask = mi_commit_mask_intersect(segment->commit_mask, mask);
|
||||
_mi_stat_increase(&_mi_stats_main.committed, full_size - mi_commit_mask_committed_size(cmask, MI_SEGMENT_SIZE)); // adjust for overlap
|
||||
mi_commit_mask_t cmask;
|
||||
mi_commit_mask_create_intersect(&segment->commit_mask, &mask, &cmask);
|
||||
_mi_stat_increase(&_mi_stats_main.committed, full_size - mi_commit_mask_committed_size(&cmask, MI_SEGMENT_SIZE)); // adjust for overlap
|
||||
if (segment->allow_decommit) { _mi_os_decommit(start, full_size, stats); } // ok if this fails
|
||||
mi_commit_mask_clear(&segment->commit_mask, mask);
|
||||
mi_commit_mask_clear(&segment->commit_mask, &mask);
|
||||
}
|
||||
// increase expiration of reusing part of the delayed decommit
|
||||
if (commit && mi_commit_mask_any_set(segment->decommit_mask, mask)) {
|
||||
if (commit && mi_commit_mask_any_set(&segment->decommit_mask, &mask)) {
|
||||
segment->decommit_expire = _mi_clock_now() + mi_option_get(mi_option_reset_delay);
|
||||
}
|
||||
// always undo delayed decommits
|
||||
mi_commit_mask_clear(&segment->decommit_mask, mask);
|
||||
mi_assert_internal((segment->commit_mask & segment->decommit_mask) == segment->decommit_mask);
|
||||
mi_commit_mask_clear(&segment->decommit_mask, &mask);
|
||||
mi_assert_internal(mi_commit_mask_all_set(&segment->commit_mask, &segment->decommit_mask));
|
||||
return true;
|
||||
}
|
||||
|
||||
static bool mi_segment_ensure_committed(mi_segment_t* segment, uint8_t* p, size_t size, mi_stats_t* stats) {
|
||||
mi_assert_internal(mi_commit_mask_all_set(segment->commit_mask, segment->decommit_mask));
|
||||
if (mi_commit_mask_is_full(segment->commit_mask) && mi_commit_mask_is_empty(segment->decommit_mask)) return true; // fully committed
|
||||
mi_assert_internal(mi_commit_mask_all_set(&segment->commit_mask, &segment->decommit_mask));
|
||||
if (mi_commit_mask_is_full(&segment->commit_mask) && mi_commit_mask_is_empty(&segment->decommit_mask)) return true; // fully committed
|
||||
return mi_segment_commitx(segment,true,p,size,stats);
|
||||
}
|
||||
|
||||
@ -411,27 +422,30 @@ static void mi_segment_perhaps_decommit(mi_segment_t* segment, uint8_t* p, size_
|
||||
// register for future decommit in the decommit mask
|
||||
uint8_t* start;
|
||||
size_t full_size;
|
||||
mi_commit_mask_t mask = mi_segment_commit_mask(segment, true /*conservative*/, p, size, &start, &full_size);
|
||||
if (mi_commit_mask_is_empty(mask) || full_size==0) return;
|
||||
mi_commit_mask_t mask;
|
||||
mi_segment_commit_mask(segment, true /*conservative*/, p, size, &start, &full_size, &mask);
|
||||
if (mi_commit_mask_is_empty(&mask) || full_size==0) return;
|
||||
|
||||
// update delayed commit
|
||||
mi_commit_mask_set(&segment->decommit_mask, mi_commit_mask_intersect(mask,segment->commit_mask)); // only decommit what is committed; span_free may try to decommit more
|
||||
mi_commit_mask_t cmask;
|
||||
mi_commit_mask_create_intersect(&segment->commit_mask, &mask, &cmask); // only decommit what is committed; span_free may try to decommit more
|
||||
mi_commit_mask_set(&segment->decommit_mask, &cmask);
|
||||
segment->decommit_expire = _mi_clock_now() + mi_option_get(mi_option_reset_delay);
|
||||
}
|
||||
}
|
||||
|
||||
static void mi_segment_delayed_decommit(mi_segment_t* segment, bool force, mi_stats_t* stats) {
|
||||
if (!segment->allow_decommit || mi_commit_mask_is_empty(segment->decommit_mask)) return;
|
||||
if (!segment->allow_decommit || mi_commit_mask_is_empty(&segment->decommit_mask)) return;
|
||||
mi_msecs_t now = _mi_clock_now();
|
||||
if (!force && now < segment->decommit_expire) return;
|
||||
|
||||
mi_commit_mask_t mask = segment->decommit_mask;
|
||||
segment->decommit_expire = 0;
|
||||
segment->decommit_mask = mi_commit_mask_empty();
|
||||
mi_commit_mask_create_empty(&segment->decommit_mask);
|
||||
|
||||
uintptr_t idx;
|
||||
uintptr_t count;
|
||||
mi_commit_mask_foreach(mask, idx, count) {
|
||||
ptrdiff_t idx;
|
||||
ptrdiff_t count;
|
||||
mi_commit_mask_foreach(&mask, idx, count) {
|
||||
// if found, decommit that sequence
|
||||
if (count > 0) {
|
||||
uint8_t* p = (uint8_t*)segment + (idx*MI_COMMIT_SIZE);
|
||||
@ -439,8 +453,7 @@ static void mi_segment_delayed_decommit(mi_segment_t* segment, bool force, mi_st
|
||||
mi_segment_commitx(segment, false, p, size, stats);
|
||||
}
|
||||
}
|
||||
mi_commit_mask_foreach_end()
|
||||
mi_assert_internal(mi_commit_mask_is_empty(segment->decommit_mask));
|
||||
mi_commit_mask_foreach_end()
|
||||
}
|
||||
|
||||
|
||||
@ -649,7 +662,14 @@ static mi_segment_t* mi_segment_init(mi_segment_t* segment, size_t required, mi_
|
||||
// Try to get from our cache first
|
||||
bool is_zero = false;
|
||||
const bool commit_info_still_good = (segment != NULL);
|
||||
mi_commit_mask_t commit_mask = (segment != NULL ? segment->commit_mask : mi_commit_mask_empty());
|
||||
mi_commit_mask_t commit_mask;
|
||||
if (segment != NULL) {
|
||||
commit_mask = segment->commit_mask;
|
||||
}
|
||||
else {
|
||||
mi_commit_mask_create_empty(&commit_mask);
|
||||
}
|
||||
|
||||
if (segment==NULL) {
|
||||
// Allocate the segment from the OS
|
||||
bool mem_large = (!eager_delay && (MI_SECURE==0)); // only allow large OS pages once we are no longer lazy
|
||||
@ -659,23 +679,30 @@ static mi_segment_t* mi_segment_init(mi_segment_t* segment, size_t required, mi_
|
||||
if (segment==NULL) {
|
||||
segment = (mi_segment_t*)_mi_arena_alloc_aligned(segment_size, MI_SEGMENT_SIZE, &commit, &mem_large, &is_pinned, &is_zero, &memid, os_tld);
|
||||
if (segment == NULL) return NULL; // failed to allocate
|
||||
commit_mask = (commit ? mi_commit_mask_full() : mi_commit_mask_empty());
|
||||
if (commit) {
|
||||
mi_commit_mask_create_full(&commit_mask);
|
||||
}
|
||||
else {
|
||||
mi_commit_mask_create_empty(&commit_mask);
|
||||
}
|
||||
}
|
||||
mi_assert_internal(segment != NULL && (uintptr_t)segment % MI_SEGMENT_SIZE == 0);
|
||||
|
||||
const size_t commit_needed = _mi_divide_up(info_slices*MI_SEGMENT_SLICE_SIZE, MI_COMMIT_SIZE);
|
||||
mi_assert_internal(commit_needed>0);
|
||||
if (!mi_commit_mask_all_set(commit_mask,mi_commit_mask_create(0, commit_needed))) {
|
||||
mi_commit_mask_t commit_needed_mask;
|
||||
mi_commit_mask_create(0, commit_needed, &commit_needed_mask);
|
||||
if (!mi_commit_mask_all_set(&commit_mask, &commit_needed_mask)) {
|
||||
// at least commit the info slices
|
||||
mi_assert_internal(commit_needed*MI_COMMIT_SIZE > info_slices*MI_SEGMENT_SLICE_SIZE);
|
||||
mi_assert_internal(commit_needed*MI_COMMIT_SIZE >= info_slices*MI_SEGMENT_SLICE_SIZE);
|
||||
bool ok = _mi_os_commit(segment, commit_needed*MI_COMMIT_SIZE, &is_zero, tld->stats);
|
||||
if (!ok) return NULL; // failed to commit
|
||||
mi_commit_mask_set(&commit_mask,mi_commit_mask_create(0, commit_needed));
|
||||
mi_commit_mask_set(&commit_mask, &commit_needed_mask);
|
||||
}
|
||||
segment->memid = memid;
|
||||
segment->mem_is_pinned = is_pinned;
|
||||
segment->mem_is_large = mem_large;
|
||||
segment->mem_is_committed = mi_commit_mask_is_full(commit_mask);
|
||||
segment->mem_is_committed = mi_commit_mask_is_full(&commit_mask);
|
||||
mi_segments_track_size((long)(segment_size), tld);
|
||||
_mi_segment_map_allocated_at(segment);
|
||||
}
|
||||
@ -692,7 +719,7 @@ static mi_segment_t* mi_segment_init(mi_segment_t* segment, size_t required, mi_
|
||||
segment->commit_mask = commit_mask; // on lazy commit, the initial part is always committed
|
||||
segment->allow_decommit = (mi_option_is_enabled(mi_option_allow_decommit) && !segment->mem_is_pinned && !segment->mem_is_large);
|
||||
segment->decommit_expire = 0;
|
||||
segment->decommit_mask = mi_commit_mask_empty();
|
||||
mi_commit_mask_create_empty( &segment->decommit_mask );
|
||||
}
|
||||
|
||||
// initialize segment info
|
||||
|
||||
@ -39,12 +39,12 @@ static size_t use_one_size = 0; // use single object size of `N * s
|
||||
|
||||
// #define USE_STD_MALLOC
|
||||
#ifdef USE_STD_MALLOC
|
||||
#define custom_calloc(n,s) calloc(n,s)
|
||||
#define custom_calloc(n,s) malloc(n*s)
|
||||
#define custom_realloc(p,s) realloc(p,s)
|
||||
#define custom_free(p) free(p)
|
||||
#else
|
||||
#include <mimalloc.h>
|
||||
#define custom_calloc(n,s) mi_calloc(n,s)
|
||||
#define custom_calloc(n,s) mi_malloc(n*s)
|
||||
#define custom_realloc(p,s) mi_realloc(p,s)
|
||||
#define custom_free(p) mi_free(p)
|
||||
#endif
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user