Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2025-07-04 02:21:22 +00:00
Code Issues Projects Releases Packages Wiki Activity

[RTL] Use LastEntryInSegment to speed up RtlpFindAndCommitPages. CORE-14588

Browse source
This commit is contained in:
Thomas Faber 2020-02-02 12:54:19 +01:00
parent 771f7d3f95
commit 10d23614d3
1 changed files with 14 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

5
sdk/lib/rtl/heap.c
View file

@ -665,6 +665,10 @@ RtlpFindAndCommitPages(PHEAP Heap,
/* Calculate first and last entries */ /* Calculate first and last entries */
FirstEntry = (PHEAP_ENTRY)Address; FirstEntry = (PHEAP_ENTRY)Address;
LastEntry = Segment->LastEntryInSegment;
if (!(LastEntry->Flags & HEAP_ENTRY_LAST_ENTRY) ||
LastEntry + LastEntry->Size != FirstEntry)
{
/* Go through the entries to find the last one */ /* Go through the entries to find the last one */
if (PreviousUcr) if (PreviousUcr)
LastEntry = (PHEAP_ENTRY)((ULONG_PTR)PreviousUcr->Address + PreviousUcr->Size); LastEntry = (PHEAP_ENTRY)((ULONG_PTR)PreviousUcr->Address + PreviousUcr->Size);
@ -676,6 +680,7 @@ RtlpFindAndCommitPages(PHEAP Heap,
ASSERT(LastEntry->Size != 0); ASSERT(LastEntry->Size != 0);
LastEntry += LastEntry->Size; LastEntry += LastEntry->Size;
} }
}
ASSERT((LastEntry + LastEntry->Size) == FirstEntry); ASSERT((LastEntry + LastEntry->Size) == FirstEntry);
/* Unmark it as a last entry */ /* Unmark it as a last entry */