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utils/memory_leak: fix debug_memusage_dump_random_backref_chain 0 case

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handle case where no objects of desired type are found
This commit is contained in:
SomberNight
2026-01-20 15:55:11 +00:00
parent bf1e0103e4
commit 3a8fbabcae
1 changed files with 6 additions and 2 deletions
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8
electrum/utils/memory_leak.py
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@@ -52,7 +52,7 @@ def debug_memusage_list_all_objects(limit: int = 50) -> list[tuple[str, int]]:
) )
def debug_memusage_dump_random_backref_chain(objtype: str) -> str: def debug_memusage_dump_random_backref_chain(objtype: str) -> Optional[str]:
"""Writes a dotfile to cwd, containing the backref chain """Writes a dotfile to cwd, containing the backref chain
for a randomly selected object of type objtype. for a randomly selected object of type objtype.
@@ -68,10 +68,14 @@ def debug_memusage_dump_random_backref_chain(objtype: str) -> str:
import random import random
timestamp = datetime.datetime.now(datetime.timezone.utc).strftime("%Y%m%dT%H%M%SZ") timestamp = datetime.datetime.now(datetime.timezone.utc).strftime("%Y%m%dT%H%M%SZ")
fpath = os.path.abspath(f"electrum_backref_chain_{timestamp}.dot") fpath = os.path.abspath(f"electrum_backref_chain_{timestamp}.dot")
objects = objgraph.by_type(objtype)
if not objects:
return None
random_obj = random.choice(objects)
with open(fpath, "w") as f: with open(fpath, "w") as f:
objgraph.show_chain( objgraph.show_chain(
objgraph.find_backref_chain( objgraph.find_backref_chain(
random.choice(objgraph.by_type(objtype)), random_obj,
objgraph.is_proper_module), objgraph.is_proper_module),
output=f) output=f)
return fpath return fpath