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import pytest
from rpython.rlib.rarithmetic import r_uint
from pypy.module.gc.hook import LowLevelGcHooks
from pypy.interpreter.baseobjspace import ObjSpace
from pypy.interpreter.gateway import interp2app, unwrap_spec
class AppTestGcHooks(object):
def setup_class(cls):
if cls.runappdirect:
pytest.skip("these tests cannot work with -A")
space = cls.space
gchooks = space.fromcache(LowLevelGcHooks)
@unwrap_spec(ObjSpace, int, r_uint, int)
def fire_gc_minor(space, duration, total_memory_used, pinned_objects):
gchooks.fire_gc_minor(duration, total_memory_used, pinned_objects)
@unwrap_spec(ObjSpace, int, int, int)
def fire_gc_collect_step(space, duration, oldstate, newstate):
gchooks.fire_gc_collect_step(duration, oldstate, newstate)
@unwrap_spec(ObjSpace, int, int, int, r_uint, r_uint, r_uint, r_uint)
def fire_gc_collect(space, a, b, c, d, e, f, g):
gchooks.fire_gc_collect(a, b, c, d, e, f, g)
@unwrap_spec(ObjSpace)
def fire_many(space):
gchooks.fire_gc_minor(5.0, 0, 0)
gchooks.fire_gc_minor(7.0, 0, 0)
gchooks.fire_gc_collect_step(5.0, 0, 0)
gchooks.fire_gc_collect_step(15.0, 0, 0)
gchooks.fire_gc_collect_step(22.0, 0, 0)
gchooks.fire_gc_collect(1, 2, 3, 4, 5, 6, 7)
cls.w_fire_gc_minor = space.wrap(interp2app(fire_gc_minor))
cls.w_fire_gc_collect_step = space.wrap(interp2app(fire_gc_collect_step))
cls.w_fire_gc_collect = space.wrap(interp2app(fire_gc_collect))
cls.w_fire_many = space.wrap(interp2app(fire_many))
def test_default(self):
import gc
assert gc.hooks.on_gc_minor is None
assert gc.hooks.on_gc_collect_step is None
assert gc.hooks.on_gc_collect is None
def test_on_gc_minor(self):
import gc
lst = []
def on_gc_minor(stats):
lst.append((stats.count,
stats.duration,
stats.total_memory_used,
stats.pinned_objects))
gc.hooks.on_gc_minor = on_gc_minor
self.fire_gc_minor(10, 20, 30)
self.fire_gc_minor(40, 50, 60)
assert lst == [
(1, 10, 20, 30),
(1, 40, 50, 60),
]
#
gc.hooks.on_gc_minor = None
self.fire_gc_minor(70, 80, 90) # won't fire because the hooks is disabled
assert lst == [
(1, 10, 20, 30),
(1, 40, 50, 60),
]
def test_on_gc_collect_step(self):
import gc
SCANNING = 0
MARKING = 1
SWEEPING = 2
FINALIZING = 3
lst = []
def on_gc_collect_step(stats):
lst.append((stats.count,
stats.duration,
stats.oldstate,
stats.newstate,
stats.major_is_done))
gc.hooks.on_gc_collect_step = on_gc_collect_step
self.fire_gc_collect_step(10, SCANNING, MARKING)
self.fire_gc_collect_step(40, FINALIZING, SCANNING)
assert lst == [
(1, 10, SCANNING, MARKING, False),
(1, 40, FINALIZING, SCANNING, True),
]
#
gc.hooks.on_gc_collect_step = None
oldlst = lst[:]
self.fire_gc_collect_step(70, SCANNING, MARKING) # won't fire
assert lst == oldlst
def test_on_gc_collect(self):
import gc
lst = []
def on_gc_collect(stats):
lst.append((stats.count,
stats.num_major_collects,
stats.arenas_count_before,
stats.arenas_count_after,
stats.arenas_bytes,
stats.rawmalloc_bytes_before,
stats.rawmalloc_bytes_after,
stats.pinned_objects))
gc.hooks.on_gc_collect = on_gc_collect
self.fire_gc_collect(1, 2, 3, 4, 5, 6, 20)
self.fire_gc_collect(7, 8, 9, 10, 11, 12, 21)
assert lst == [
(1, 1, 2, 3, 4, 5, 6, 20),
(1, 7, 8, 9, 10, 11, 12, 21),
]
#
gc.hooks.on_gc_collect = None
self.fire_gc_collect(42, 42, 42, 42, 42, 42, 43) # won't fire
assert lst == [
(1, 1, 2, 3, 4, 5, 6, 20),
(1, 7, 8, 9, 10, 11, 12, 21),
]
def test_consts(self):
import gc
S = gc.GcCollectStepStats
assert S.STATE_SCANNING == 0
assert S.STATE_MARKING == 1
assert S.STATE_SWEEPING == 2
assert S.STATE_FINALIZING == 3
assert S.GC_STATES == ('SCANNING', 'MARKING', 'SWEEPING',
'FINALIZING', 'USERDEL')
def test_cumulative(self):
import gc
class MyHooks(object):
def __init__(self):
self.minors = []
self.steps = []
def on_gc_minor(self, stats):
self.minors.append((stats.count, stats.duration,
stats.duration_min, stats.duration_max))
def on_gc_collect_step(self, stats):
self.steps.append((stats.count, stats.duration,
stats.duration_min, stats.duration_max))
on_gc_collect = None
myhooks = MyHooks()
gc.hooks.set(myhooks)
self.fire_many()
assert myhooks.minors == [(2, 12, 5, 7)]
assert myhooks.steps == [(3, 42, 5, 22)]
def test_clear_queue(self):
import gc
class MyHooks(object):
def __init__(self):
self.lst = []
def on_gc_minor(self, stats):
self.lst.append('minor')
def on_gc_collect_step(self, stats):
self.lst.append('step')
def on_gc_collect(self, stats):
self.lst.append('collect')
myhooks = MyHooks()
gc.hooks.set(myhooks)
self.fire_many()
assert myhooks.lst == ['minor', 'step', 'collect']
myhooks.lst[:] = []
self.fire_gc_minor(0, 0, 0)
assert myhooks.lst == ['minor']
gc.hooks.reset()
assert gc.hooks.on_gc_minor is None
assert gc.hooks.on_gc_collect_step is None
assert gc.hooks.on_gc_collect is None
def test_no_recursive(self):
import gc
lst = []
def on_gc_minor(stats):
lst.append((stats.count,
stats.duration,
stats.total_memory_used,
stats.pinned_objects))
self.fire_gc_minor(1, 2, 3) # won't fire NOW
gc.hooks.on_gc_minor = on_gc_minor
self.fire_gc_minor(10, 20, 30)
self.fire_gc_minor(40, 50, 60)
# the duration for the 2nd call is 41, because it also counts the 1
# which was fired recursively
assert lst == [
(1, 10, 20, 30),
(2, 41, 50, 60),
]
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