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[RTL] Improve performance by introducing a hint array for free entries

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The array is there for the entries smaller than the decommit threshold, the rationale
being that entries which are larger will likely be split for honoring other allocations
or be coalesced and eventually decommitted.

This with the previous commits make a huge perf boost to memory-intensive applications like cmake

CORE-15793
This commit is contained in:
Jérôme Gardou 2021-03-09 19:46:05 +01:00 • committed by Jérôme Gardou
parent 325737f855
commit 7e5c1872ee
2 changed files with 307 additions and 300 deletions
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11
sdk/lib/rtl/heap.h
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@ -12,7 +12,6 @@
#define RTL_HEAP_H
/* Core heap definitions */
#define HEAP_FREELISTS 128
#define HEAP_SEGMENTS 64
#define HEAP_ENTRY_SIZE ((ULONG)sizeof(HEAP_ENTRY))
@ -257,13 +256,7 @@ typedef struct _HEAP
PVOID BlocksIndex; // HEAP_LIST_LOOKUP
PVOID UCRIndex;
PHEAP_PSEUDO_TAG_ENTRY PseudoTagEntries;
LIST_ENTRY FreeLists[HEAP_FREELISTS]; //FIXME: non-Vista
//LIST_ENTRY FreeLists;
union
{
ULONG FreeListsInUseUlong[HEAP_FREELISTS / (sizeof(ULONG) * 8)]; //FIXME: non-Vista
UCHAR FreeListsInUseBytes[HEAP_FREELISTS / (sizeof(UCHAR) * 8)]; //FIXME: non-Vista
} u;
LIST_ENTRY FreeLists;
PHEAP_LOCK LockVariable;
PRTL_HEAP_COMMIT_ROUTINE CommitRoutine;
PVOID FrontEndHeap;
@ -271,6 +264,8 @@ typedef struct _HEAP
UCHAR FrontEndHeapType;
HEAP_COUNTERS Counters;
HEAP_TUNING_PARAMETERS TuningParameters;
RTL_BITMAP FreeHintBitmap; // FIXME: non-Vista
PLIST_ENTRY FreeHints[ANYSIZE_ARRAY]; // FIXME: non-Vista
} HEAP, *PHEAP;
typedef struct _HEAP_SEGMENT