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gh-140358: Bring back elapsed time and unreachable count to gc debug output (#140359)

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Pål Grønås Drange 2025-10-21 01:54:44 +02:00 • committed by GitHub
parent e09837fcbf
commit b2f9fb9db2
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13
Python/gc.c
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@ -2077,8 +2077,10 @@ _PyGC_Collect(PyThreadState *tstate, int generation, _PyGC_Reason reason)
if (reason != _Py_GC_REASON_SHUTDOWN) {
invoke_gc_callback(gcstate, "start", generation, &stats);
}
PyTime_t t1;
if (gcstate->debug & _PyGC_DEBUG_STATS) {
PySys_WriteStderr("gc: collecting generation %d...\n", generation);
(void)PyTime_PerfCounterRaw(&t1);
show_stats_each_generations(gcstate);
}
if (PyDTrace_GC_START_ENABLED()) {
@ -2115,6 +2117,17 @@ _PyGC_Collect(PyThreadState *tstate, int generation, _PyGC_Reason reason)
#endif
validate_spaces(gcstate);
_Py_atomic_store_int(&gcstate->collecting, 0);
if (gcstate->debug & _PyGC_DEBUG_STATS) {
PyTime_t t2;
(void)PyTime_PerfCounterRaw(&t2);
double d = PyTime_AsSecondsDouble(t2 - t1);
PySys_WriteStderr(
"gc: done, %zd unreachable, %zd uncollectable, %.4fs elapsed\n",
stats.collected + stats.uncollectable, stats.uncollectable, d
);
}
return stats.uncollectable + stats.collected;
}