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# SPDX-License-Identifier: (Apache-2.0 OR MIT)
# Copyright ijl (2019-2025), Rami Chowdhury (2020)
import dataclasses
import datetime
import gc
import random
from .util import numpy, pandas
try:
import pytz
except ImportError:
pytz = None # type: ignore
try:
import psutil
except ImportError:
psutil = None # type: ignore
import pytest
import orjson
from .util import IS_FREETHREADING
FIXTURE = '{"a":[81891289, 8919812.190129012], "b": false, "c": null, "d": "東京"}'
def default(obj):
return str(obj)
@dataclasses.dataclass
class Member:
id: int
active: bool
@dataclasses.dataclass
class Object:
id: int
updated_at: datetime.datetime
name: str
members: list[Member]
DATACLASS_FIXTURE = [
Object(
i,
datetime.datetime.now(datetime.timezone.utc)
+ datetime.timedelta(seconds=random.randint(0, 10000)),
str(i) * 3,
[Member(j, True) for j in range(10)],
)
for i in range(100000, 101000)
]
MAX_INCREASE = 4194304 # 4MiB
if IS_FREETHREADING:
MAX_INCREASE *= 4
class Unsupported:
pass
class TestMemory:
@pytest.mark.skipif(psutil is None, reason="psutil not installed")
def test_memory_loads(self):
"""
loads() memory leak
"""
proc = psutil.Process()
gc.collect()
val = orjson.loads(FIXTURE)
assert val
mem = proc.memory_info().rss
for _ in range(10000):
val = orjson.loads(FIXTURE)
assert val
gc.collect()
assert proc.memory_info().rss <= mem + MAX_INCREASE
@pytest.mark.skipif(psutil is None, reason="psutil not installed")
def test_memory_loads_memoryview(self):
"""
loads() memory leak using memoryview
"""
proc = psutil.Process()
gc.collect()
fixture = FIXTURE.encode("utf-8")
val = orjson.loads(fixture)
assert val
mem = proc.memory_info().rss
for _ in range(10000):
val = orjson.loads(memoryview(fixture))
assert val
gc.collect()
assert proc.memory_info().rss <= mem + MAX_INCREASE
@pytest.mark.skipif(psutil is None, reason="psutil not installed")
def test_memory_dumps(self):
"""
dumps() memory leak
"""
proc = psutil.Process()
gc.collect()
fixture = orjson.loads(FIXTURE)
val = orjson.dumps(fixture)
assert val
mem = proc.memory_info().rss
for _ in range(10000):
val = orjson.dumps(fixture)
assert val
gc.collect()
assert proc.memory_info().rss <= mem + MAX_INCREASE
assert proc.memory_info().rss <= mem + MAX_INCREASE
@pytest.mark.skipif(psutil is None, reason="psutil not installed")
def test_memory_loads_exc(self):
"""
loads() memory leak exception without a GC pause
"""
proc = psutil.Process()
gc.disable()
mem = proc.memory_info().rss
n = 10000
i = 0
for _ in range(n):
try:
orjson.loads("")
except orjson.JSONDecodeError:
i += 1
assert n == i
assert proc.memory_info().rss <= mem + MAX_INCREASE
gc.enable()
@pytest.mark.skipif(psutil is None, reason="psutil not installed")
def test_memory_dumps_exc(self):
"""
dumps() memory leak exception without a GC pause
"""
proc = psutil.Process()
gc.disable()
data = Unsupported()
mem = proc.memory_info().rss
n = 10000
i = 0
for _ in range(n):
try:
orjson.dumps(data)
except orjson.JSONEncodeError:
i += 1
assert n == i
assert proc.memory_info().rss <= mem + MAX_INCREASE
gc.enable()
@pytest.mark.skipif(psutil is None, reason="psutil not installed")
def test_memory_dumps_default(self):
"""
dumps() default memory leak
"""
proc = psutil.Process()
gc.collect()
fixture = orjson.loads(FIXTURE)
class Custom:
def __init__(self, name):
self.name = name
def __str__(self):
return f"{self.__class__.__name__}({self.name})"
fixture["custom"] = Custom("orjson")
val = orjson.dumps(fixture, default=default)
mem = proc.memory_info().rss
for _ in range(10000):
val = orjson.dumps(fixture, default=default)
assert val
gc.collect()
assert proc.memory_info().rss <= mem + MAX_INCREASE
@pytest.mark.skipif(psutil is None, reason="psutil not installed")
def test_memory_dumps_dataclass(self):
"""
dumps() dataclass memory leak
"""
proc = psutil.Process()
gc.collect()
val = orjson.dumps(DATACLASS_FIXTURE)
assert val
mem = proc.memory_info().rss
for _ in range(100):
val = orjson.dumps(DATACLASS_FIXTURE)
assert val
assert val
gc.collect()
assert proc.memory_info().rss <= mem + MAX_INCREASE
@pytest.mark.skipif(
psutil is None or pytz is None,
reason="psutil not installed",
)
def test_memory_dumps_pytz_tzinfo(self):
"""
dumps() pytz tzinfo memory leak
"""
proc = psutil.Process()
gc.collect()
dt = datetime.datetime.now()
val = orjson.dumps(pytz.UTC.localize(dt))
assert val
mem = proc.memory_info().rss
for _ in range(50000):
val = orjson.dumps(pytz.UTC.localize(dt))
assert val
assert val
gc.collect()
assert proc.memory_info().rss <= mem + MAX_INCREASE
@pytest.mark.skipif(psutil is None, reason="psutil not installed")
def test_memory_loads_keys(self):
"""
loads() memory leak with number of keys causing cache eviction
"""
proc = psutil.Process()
gc.collect()
fixture = {f"key_{idx}": "value" for idx in range(1024)}
assert len(fixture) == 1024
val = orjson.dumps(fixture)
loaded = orjson.loads(val)
assert loaded
mem = proc.memory_info().rss
for _ in range(100):
loaded = orjson.loads(val)
assert loaded
gc.collect()
assert proc.memory_info().rss <= mem + MAX_INCREASE
@pytest.mark.skipif(psutil is None, reason="psutil not installed")
@pytest.mark.skipif(numpy is None, reason="numpy is not installed")
def test_memory_dumps_numpy(self):
"""
dumps() numpy memory leak
"""
proc = psutil.Process()
gc.collect()
fixture = numpy.random.rand(4, 4, 4) # type: ignore
val = orjson.dumps(fixture, option=orjson.OPT_SERIALIZE_NUMPY)
assert val
mem = proc.memory_info().rss
for _ in range(100):
val = orjson.dumps(fixture, option=orjson.OPT_SERIALIZE_NUMPY)
assert val
assert val
gc.collect()
assert proc.memory_info().rss <= mem + MAX_INCREASE
@pytest.mark.skipif(psutil is None, reason="psutil not installed")
@pytest.mark.skipif(pandas is None, reason="pandas is not installed")
def test_memory_dumps_pandas(self):
"""
dumps() pandas memory leak
"""
proc = psutil.Process()
gc.collect()
numpy.random.rand(4, 4, 4) # type: ignore
df = pandas.Series(numpy.random.rand(4, 4, 4).tolist()) # type: ignore
val = df.map(orjson.dumps)
assert not val.empty
mem = proc.memory_info().rss
for _ in range(100):
val = df.map(orjson.dumps)
assert not val.empty
gc.collect()
assert proc.memory_info().rss <= mem + MAX_INCREASE
@pytest.mark.skipif(psutil is None, reason="psutil not installed")
def test_memory_dumps_fragment(self):
"""
dumps() Fragment memory leak
"""
proc = psutil.Process()
gc.collect()
orjson.dumps(orjson.Fragment(str(0)))
mem = proc.memory_info().rss
for i in range(10000):
orjson.dumps(orjson.Fragment(str(i)))
gc.collect()
assert proc.memory_info().rss <= mem + MAX_INCREASE
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