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ringabout
2026-01-30 13:53:48 +08:00
parent 76a85785e3
commit 08e42c69e5
1 changed files with 5 additions and 5 deletions
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10
lib/system/alloc.nim
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@@ -846,7 +846,7 @@ when defined(heaptrack):
proc heaptrack_malloc(a: pointer, size: int) {.cdecl, importc, dynlib: heaptrackLib.}
proc heaptrack_free(a: pointer) {.cdecl, importc, dynlib: heaptrackLib.}
proc rawAlloc(a: var MemRegion, requestedSize: int, alignment: int = MemAlign, extraSize: int = 0): pointer =
proc rawAlloc(a: var MemRegion, requestedSize: int, alignment: int = MemAlign, offset: int = 0): pointer =
when defined(nimTypeNames):
inc(a.allocCounter)
sysAssert(allocInv(a), "rawAlloc: begin")
@@ -956,7 +956,7 @@ proc rawAlloc(a: var MemRegion, requestedSize: int, alignment: int = MemAlign, e
# For big chunks with custom alignment, allocate extra space for alignment adjustment
size = requestedSize + bigChunkOverhead()
if alignment > MemAlign:
size += alignment - 1 + extraSize
size += alignment - 1
# allocate a large block
var c = if size >= HugeChunkSize: getHugeChunk(a, size)
else: getBigChunk(a, size)
@@ -964,11 +964,11 @@ proc rawAlloc(a: var MemRegion, requestedSize: int, alignment: int = MemAlign, e
sysAssert c.next == nil, "rawAlloc 11"
result = addr(c.data)
# Apply alignment if needed: align (result + extraSize) to alignment boundary
# Apply alignment if needed: align (result + offset) to alignment boundary
if alignment > MemAlign:
let mask = alignment - 1
let alignedUserData = (cast[int](result) + extraSize + mask) and not mask
let finalResult = cast[pointer](alignedUserData - extraSize)
let alignedUserData = (cast[int](result) + offset + mask) and not mask
let finalResult = cast[pointer](alignedUserData - offset)
c.alignOffset = cast[int16](cast[int](finalResult) - cast[int](result))
result = finalResult
else: