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GH-140638: Add a GC "candidates" stat (GH-141814)

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Brandt Bucher 2025-11-22 13:59:14 -08:00 • committed by GitHub
parent 425fd85ca3
commit 227b9d326e
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7 changed files with 50 additions and 20 deletions
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12
Lib/test/test_gc.py
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@ -846,11 +846,14 @@ def test_get_stats(self):
self.assertEqual(len(stats), 3)
for st in stats:
self.assertIsInstance(st, dict)
self.assertEqual(set(st),
{"collected", "collections", "uncollectable", "duration"})
self.assertEqual(
set(st),
{"collected", "collections", "uncollectable", "candidates", "duration"}
)
self.assertGreaterEqual(st["collected"], 0)
self.assertGreaterEqual(st["collections"], 0)
self.assertGreaterEqual(st["uncollectable"], 0)
self.assertGreaterEqual(st["candidates"], 0)
self.assertGreaterEqual(st["duration"], 0)
# Check that collection counts are incremented correctly
if gc.isenabled():
@ -865,7 +868,7 @@ def test_get_stats(self):
self.assertGreater(new[0]["duration"], old[0]["duration"])
self.assertEqual(new[1]["duration"], old[1]["duration"])
self.assertEqual(new[2]["duration"], old[2]["duration"])
for stat in ["collected", "uncollectable"]:
for stat in ["collected", "uncollectable", "candidates"]:
self.assertGreaterEqual(new[0][stat], old[0][stat])
self.assertEqual(new[1][stat], old[1][stat])
self.assertEqual(new[2][stat], old[2][stat])
@ -877,7 +880,7 @@ def test_get_stats(self):
self.assertEqual(new[0]["duration"], old[0]["duration"])
self.assertEqual(new[1]["duration"], old[1]["duration"])
self.assertGreater(new[2]["duration"], old[2]["duration"])
for stat in ["collected", "uncollectable"]:
for stat in ["collected", "uncollectable", "candidates"]:
self.assertEqual(new[0][stat], old[0][stat])
self.assertEqual(new[1][stat], old[1][stat])
self.assertGreaterEqual(new[2][stat], old[2][stat])
@ -1316,6 +1319,7 @@ def test_collect(self):
self.assertIn("generation", info)
self.assertIn("collected", info)
self.assertIn("uncollectable", info)
self.assertIn("candidates", info)
self.assertIn("duration", info)
def test_collect_generation(self):