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24a606902a
fixes #23247 closes #23251 (which accounts for why the openarray type is lifted because ops are lifted for openarray conversions) related: https://github.com/nim-lang/Nim/pull/18713 It seems to me that openarray doesn't own the data, so it cannot destroy itself. The same case should be applied to https://github.com/nim-lang/Nim/issues/19435. It shouldn't be destroyed even openarray can have a destructor. A cleanup will be followed for https://github.com/nim-lang/Nim/pull/19723 if it makes sense. According to https://github.com/nim-lang/Nim/pull/12073, it lifts destructor for openarray when openarray is sunk into the function, when means `sink openarray` owns the data and needs to destroy it. In other cases, destructor shouldn't be lifted for `openarray` in the first place and it shouldn't destroy the data if it doesn't own it. --------- Co-authored-by: Andreas Rumpf <rumpf_a@web.de>
52 lines
1.3 KiB
Nim
52 lines
1.3 KiB
Nim
discard """
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matrix: ";-d:useMalloc"
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"""
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# bug #23247
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import std/hashes
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func baseAddr[T](x: openArray[T]): ptr T =
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# Return the address of the zero:th element of x or `nil` if x is empty
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if x.len == 0: nil else: cast[ptr T](x)
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func makeUncheckedArray[T](p: ptr T): ptr UncheckedArray[T] =
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cast[ptr UncheckedArray[T]](p)
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type
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LabelKey = object
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data: seq[string]
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refs: ptr UncheckedArray[string]
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refslen: int
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Gauge = ref object
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metrics: seq[seq[seq[string]]]
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template values(key: LabelKey): openArray[string] =
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if key.refslen > 0:
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key.refs.toOpenArray(0, key.refslen - 1)
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else:
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key.data
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proc hash(key: LabelKey): Hash =
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hash(key.values)
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proc view(T: type LabelKey, values: openArray[string]): T =
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# TODO some day, we might get view types - until then..
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LabelKey(refs: baseAddr(values).makeUncheckedArray(), refslen: values.len())
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template withValue2(k: untyped) =
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discard hash(k)
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proc setGauge(
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collector: Gauge,
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labelValues: openArray[string],
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) =
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let v = LabelKey.view(labelValues)
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withValue2(v)
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collector.metrics.add @[@labelValues, @labelValues]
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discard @labelValues
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var nim_gc_mem_bytes = Gauge()
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let threadID = $getThreadId()
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setGauge(nim_gc_mem_bytes, @[threadID])
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setGauge(nim_gc_mem_bytes, @[threadID]) |