def profiler(*args, **kwargs):
nonlocal log_level
log_level = log_level or (logging.TRACE if hasattr(logging, 'TRACE') else logging.DEBUG)
if not logger.isEnabledFor(log_level):
return fn(*args, **kwargs)
name = fn_name(fn)
with MemoryProfiler(enabled=memory) as m:
if memory:
mem = m.usage(before=True)
logger.log(log_level,
"[PROFILING] `%s`\n"
"memory before; resident: %.2f MB, virtual: %.2f MB, unique: %.2f MB.\n"
"gc before; threshold: %s, gen_count: %s, perm_count: %s",
name,
mem.resident, mem.virtual, mem.unique,
gc.get_threshold(), gc.get_count(), gc.get_freeze_count())
with Timer(enabled=duration) as t:
ret = fn(*args, **kwargs)
if duration:
logger.log(log_level, "[PROFILING] `%s` executed in %.3fs.", name, t.duration)
if memory:
ret_size = obj_size(ret)
if ret_size > 0:
logger.log(log_level, "[PROFILING] `%s` returned object size: %.3f MB.", name, to_mb(ret_size))
mem = m.usage()
logger.log(log_level,
"[PROFILING] `%s`\n"
"memory after; resident: %+.2f MB/%.2f MB, virtual: %+.2f MB/%.2f MB, unique: %+.2f MB/%.2f MB.\n"
"gc after; threshold: %s, gen_count: %s, perm_count: %s",
name,
mem.resident_diff, mem.resident, mem.virtual_diff, mem.virtual, mem.unique_diff, mem.unique,
gc.get_threshold(), gc.get_count(), gc.get_freeze_count())
return ret
def f4():
'''垃圾自动回收'''
print(gc.get_count()) #回收计数
# print(gc.get_objects()) #收集器所追踪的所有对象列表
print(gc.get_stats()) #回收统计
print(gc.get_threshold()) #回收阈值
a=A()
print(gc.get_count())
# print(gc.get_objects())
print(gc.get_stats())
print(gc.get_threshold())
del a
print(gc.get_count())
# print(gc.get_objects())
print(gc.get_stats())
print(gc.get_threshold())
print(gc.get_freeze_count())
def test_freeze(self):
gc.freeze()
self.assertGreater(gc.get_freeze_count(), 0)
gc.unfreeze()
self.assertEqual(gc.get_freeze_count(), 0)
def test_get_frozen_heap(self):
gc.freeze()
self.assertEqual(gc.get_freeze_count(), len(gc.get_frozen_objects()))
gc.unfreeze()
def test_freeze(self):
gc.freeze()
self.assertGreater(gc.get_freeze_count(), 0)
gc.unfreeze()
self.assertEqual(gc.get_freeze_count(), 0)
def print_object_count(_connection=None):
total_count = gc.get_num_objects()
freeze_count = gc.get_freeze_count()
gc_output('Object count: {}, Freeze count: {}', total_count, freeze_count)
