juancarlospaco
commented
1 week ago !nim c --gc:orc -d:useMalloc
iterator myPairsInline*[T](twoDarray: seq[seq[T]]): (int, seq[T]) {.inline.} =
for indexValuePair in twoDarray.pairs:
yield indexValuePair
iterator myPairsClosure*[T](twoDarray: seq[seq[T]]): (int, seq[T]) {.closure.} =
for indexValuePair in twoDarray.pairs:
yield indexValuePair
template testTotalMem(iter: untyped): int =
proc innerTestTotalMem(): int {.gensym.} =
result = 0
# do the same operation 100 times, which should have similar mem footprint
# as doing it once.
for iterNum in 0..100:
result = max(result, getTotalMem()) # record current mem footprint
# initialize nested sequence
var my2dArray: seq[seq[int32]] = @[]
# fill with some data...
for i in 0'i32..10_000:
var z = @[i, i+1]
my2dArray.add z
# use that data somehow...
var otherContainer: seq[int32] = @[]
var count = 0'i32
for oneDindex, innerArray in my2dArray.iter:
for value in innerArray:
inc count
if oneDindex > 50 and value < 200:
otherContainer.add count
innerTestTotalMem()
proc main =
let closureMem = testTotalMem(myPairsClosure) #1052672
let inlineMem = testTotalMem(myPairsInline) #20328448
when defined(echoFootprint):
echo "Closure memory footprint: " & $closureMem
echo "Inline memory footprint: " & $inlineMem
# check that mem footprint is relatively similar b/t each method
doAssert (closureMem - inlineMem).abs < (closureMem div 10)
main()
github-actions[bot]
TESTING ONLY.