def test_unescaped(self):
h = HeapCache()
assert not h.is_unescaped(box1)
h.new(box2)
assert h.is_unescaped(box2)
h.invalidate_caches(rop.SETFIELD_GC, None, [box2, box1])
assert h.is_unescaped(box2)
h.invalidate_caches(rop.SETFIELD_GC, None, [box1, box2])
assert not h.is_unescaped(box2)
def test_unescaped(self):
h = HeapCache()
assert not h.is_unescaped(box1)
h.new(box2)
assert h.is_unescaped(box2)
h.invalidate_caches(rop.SETFIELD_GC, None, [box2, box1])
assert h.is_unescaped(box2)
h.invalidate_caches(rop.SETFIELD_GC, None, [box1, box2])
assert not h.is_unescaped(box2)
def test_ll_arraycopy_doesnt_escape_arrays(self):
h = HeapCache()
h.new_array(box1, lengthbox1)
h.new_array(box2, lengthbox2)
h.invalidate_caches(rop.CALL, arraycopydescr1, [None, box2, box1, index1, index1, index2])
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
h.invalidate_caches(rop.CALL, arraycopydescr1, [None, box2, box1, index1, index1, BoxInt()])
assert not h.is_unescaped(box1)
assert not h.is_unescaped(box2)
def test_is_likely_virtual(self):
h = HeapCache()
h.new(box1)
assert h.is_unescaped(box1)
assert h.is_likely_virtual(box1)
h.reset_keep_likely_virtuals()
assert not h.is_unescaped(box1)
assert h.is_likely_virtual(box1)
h._escape_box(box1)
assert not h.is_unescaped(box1)
assert not h.is_likely_virtual(box1)
def test_is_likely_virtual(self):
h = HeapCache()
h.new(box1)
assert h.is_unescaped(box1)
assert h.is_likely_virtual(box1)
h.reset_keep_likely_virtuals()
assert not h.is_unescaped(box1)
assert h.is_likely_virtual(box1)
h._escape_box(box1)
assert not h.is_unescaped(box1)
assert not h.is_likely_virtual(box1)
def test_is_likely_virtual(self):
h = HeapCache()
h.new(box1)
assert h.is_unescaped(box1)
assert h.is_likely_virtual(box1)
h.reset(reset_virtuals=False)
assert not h.is_unescaped(box1)
assert h.is_likely_virtual(box1)
h._escape(box1)
assert not h.is_unescaped(box1)
assert not h.is_likely_virtual(box1)
def test_is_likely_virtual_3(self):
h = HeapCache()
box1 = RefFrontendOp(1)
h.new(box1)
assert h.is_unescaped(box1)
assert h.is_likely_virtual(box1)
h.reset_keep_likely_virtuals()
assert not h.is_unescaped(box1)
assert h.is_likely_virtual(box1)
h.class_now_known(box1) # interaction of the two families of flags
assert not h.is_unescaped(box1)
assert h.is_likely_virtual(box1)
def test_ops_dont_escape(self):
h = HeapCache()
h.new(box1)
h.new(box2)
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
h.invalidate_caches(rop.INSTANCE_PTR_EQ, None, [box1, box2])
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
h.invalidate_caches(rop.INSTANCE_PTR_NE, None, [box1, box2])
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
def test_is_likely_virtual_2(self):
h = HeapCache()
box1 = RefFrontendOp(1)
h.new(box1)
assert h.is_unescaped(box1)
assert h.is_likely_virtual(box1)
h.reset_keep_likely_virtuals()
assert not h.is_unescaped(box1)
assert h.is_likely_virtual(box1)
h.reset() # reset everything
assert not h.is_unescaped(box1)
assert not h.is_likely_virtual(box1)
def test_ops_dont_escape(self):
h = HeapCache()
h.new(box1)
h.new(box2)
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
h.invalidate_caches(rop.INSTANCE_PTR_EQ, None, [box1, box2])
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
h.invalidate_caches(rop.INSTANCE_PTR_NE, None, [box1, box2])
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
def test_is_likely_virtual_3(self):
h = HeapCache()
box1 = RefFrontendOp(1)
h.new(box1)
assert h.is_unescaped(box1)
assert h.is_likely_virtual(box1)
h.reset_keep_likely_virtuals()
assert not h.is_unescaped(box1)
assert h.is_likely_virtual(box1)
h.class_now_known(box1) # interaction of the two families of flags
assert not h.is_unescaped(box1)
assert h.is_likely_virtual(box1)
def test_is_likely_virtual_2(self):
h = HeapCache()
box1 = RefFrontendOp(1)
h.new(box1)
assert h.is_unescaped(box1)
assert h.is_likely_virtual(box1)
h.reset_keep_likely_virtuals()
assert not h.is_unescaped(box1)
assert h.is_likely_virtual(box1)
h.reset() # reset everything
assert not h.is_unescaped(box1)
assert not h.is_likely_virtual(box1)
def test_ll_arraycopy_doesnt_escape_arrays(self):
h = HeapCache()
h.new_array(box1, lengthbox1)
h.new_array(box2, lengthbox2)
h.invalidate_caches(rop.CALL, arraycopydescr1,
[None, box2, box1, index1, index1, index2])
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
h.invalidate_caches(rop.CALL, arraycopydescr1,
[None, box2, box1, index1, index1,
BoxInt()])
assert not h.is_unescaped(box1)
assert not h.is_unescaped(box2)
def test_ll_arraycopy_doesnt_escape_arrays(self):
h = HeapCache()
box1 = RefFrontendOp(1)
box2 = RefFrontendOp(2)
lengthbox1 = IntFrontendOp(11)
lengthbox2 = IntFrontendOp(12)
h.new_array(box1, lengthbox1)
h.new_array(box2, lengthbox2)
h.invalidate_caches(rop.CALL_N, arraycopydescr1, [None, box2, box1, index1, index1, index2])
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
h.invalidate_caches(rop.CALL_N, arraycopydescr1, [None, box2, box1, index1, index1, InputArgInt()])
assert not h.is_unescaped(box1)
assert not h.is_unescaped(box2)
def test_call_doesnt_invalidate_unescaped_boxes(self):
h = HeapCache()
h.new(box1)
assert h.is_unescaped(box1)
h.setfield(box1, box2, descr1)
h.invalidate_caches(rop.CALL, FakeCallDescr(FakeEffectinfo.EF_CAN_RAISE), [])
assert h.getfield(box1, descr1) is box2
def test_bug_heap_cache_is_cleared_but_not_is_unescaped_2(self):
h = HeapCache()
box1 = RefFrontendOp(1)
box2 = RefFrontendOp(2)
h.new(box1)
h.new(box2)
h.setfield(box1, box2, descr1)
h.invalidate_caches(rop.SETFIELD_GC, None, [box1, box2])
assert h.getfield(box1, descr1) is box2
descr = BasicFailDescr()
class XTra:
oopspecindex = 0
OS_ARRAYCOPY = 42
extraeffect = 5
EF_LOOPINVARIANT = 1
EF_ELIDABLE_CANNOT_RAISE = 2
EF_ELIDABLE_OR_MEMORYERROR = 3
EF_ELIDABLE_CAN_RAISE = 4
descr.get_extra_info = XTra
h.invalidate_caches(rop.CALL_N, descr, [])
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
assert h.getfield(box1, descr1) is box2
def test_call_doesnt_invalidate_unescaped_array_boxes(self):
h = HeapCache()
h.new_array(box1, lengthbox1)
assert h.is_unescaped(box1)
h.setarrayitem(box1, index1, box3, descr1)
h.invalidate_caches(rop.CALL, FakeCallDescr(FakeEffectinfo.EF_CAN_RAISE), [])
assert h.getarrayitem(box1, index1, descr1) is box3
def test_bug_heap_cache_is_cleared_but_not_is_unescaped_2(self):
h = HeapCache()
box1 = RefFrontendOp(1)
box2 = RefFrontendOp(2)
h.new(box1)
h.new(box2)
h.setfield(box1, box2, descr1)
h.invalidate_caches(rop.SETFIELD_GC, None, [box1, box2])
assert h.getfield(box1, descr1) is box2
descr = BasicFailDescr()
class XTra:
oopspecindex = 0
OS_ARRAYCOPY = 42
OS_ARRAYMOVE = 49
extraeffect = 5
EF_LOOPINVARIANT = 1
EF_ELIDABLE_CANNOT_RAISE = 2
EF_ELIDABLE_OR_MEMORYERROR = 3
EF_ELIDABLE_CAN_RAISE = 4
descr.get_extra_info = XTra
h.invalidate_caches(rop.CALL_N, descr, [])
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
assert h.getfield(box1, descr1) is box2
def test_unescaped_testing(self):
h = HeapCache()
h.new(box1)
h.new(box2)
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
# Putting a virtual inside of another virtual doesn't escape it.
h.invalidate_caches(rop.SETFIELD_GC, None, [box1, box2])
assert h.is_unescaped(box2)
# Reading a field from a virtual doesn't escape it.
h.invalidate_caches(rop.GETFIELD_GC, None, [box1])
assert h.is_unescaped(box1)
# Escaping a virtual transitively escapes anything inside of it.
assert not h.is_unescaped(box3)
h.invalidate_caches(rop.SETFIELD_GC, None, [box3, box1])
assert not h.is_unescaped(box1)
assert not h.is_unescaped(box2)
def test_unescaped_testing(self):
h = HeapCache()
h.new(box1)
h.new(box2)
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
# Putting a virtual inside of another virtual doesn't escape it.
h.invalidate_caches(rop.SETFIELD_GC, None, [box1, box2])
assert h.is_unescaped(box2)
# Reading a field from a virtual doesn't escape it.
h.invalidate_caches(rop.GETFIELD_GC, None, [box1])
assert h.is_unescaped(box1)
# Escaping a virtual transitively escapes anything inside of it.
assert not h.is_unescaped(box3)
h.invalidate_caches(rop.SETFIELD_GC, None, [box3, box1])
assert not h.is_unescaped(box1)
assert not h.is_unescaped(box2)
def test_call_doesnt_invalidate_unescaped_array_boxes(self):
h = HeapCache()
h.new_array(box1, lengthbox1)
assert h.is_unescaped(box1)
h.setarrayitem(box1, index1, box3, descr1)
h.invalidate_caches(rop.CALL,
FakeCallDescr(FakeEffectinfo.EF_CAN_RAISE), [])
assert h.getarrayitem(box1, index1, descr1) is box3
def test_ll_arraycopy_doesnt_escape_arrays(self):
h = HeapCache()
box1 = RefFrontendOp(1)
box2 = RefFrontendOp(2)
lengthbox1 = IntFrontendOp(11)
lengthbox2 = IntFrontendOp(12)
h.new_array(box1, lengthbox1)
h.new_array(box2, lengthbox2)
h.invalidate_caches(rop.CALL_N, arraycopydescr1,
[None, box2, box1, index1, index1, index2])
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
h.invalidate_caches(rop.CALL_N, arraycopydescr1,
[None, box2, box1, index1, index1,
InputArgInt()])
assert not h.is_unescaped(box1)
assert not h.is_unescaped(box2)
def test_call_doesnt_invalidate_unescaped_boxes(self):
h = HeapCache()
h.new(box1)
assert h.is_unescaped(box1)
h.setfield(box1, box2, descr1)
h.invalidate_caches(rop.CALL,
FakeCallDescr(FakeEffectinfo.EF_CAN_RAISE), [])
assert h.getfield(box1, descr1) is box2
def test_ll_arraycopy_doesnt_escape_arrays(self):
h = HeapCache()
h.new_array(box1, lengthbox1)
h.new_array(box2, lengthbox2)
h.invalidate_caches(
rop.CALL,
FakeCallDescr(FakeEffectinfo.EF_CANNOT_RAISE, FakeEffectinfo.OS_ARRAYCOPY, write_descrs_arrays=[descr1]),
[None, box2, box1, index1, index1, index2]
)
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
h.invalidate_caches(
rop.CALL,
FakeCallDescr(FakeEffectinfo.EF_CANNOT_RAISE, FakeEffectinfo.OS_ARRAYCOPY, write_descrs_arrays=[descr1]),
[None, box2, box1, index1, index1, BoxInt()]
)
assert not h.is_unescaped(box1)
assert not h.is_unescaped(box2)
def test_ll_arraycopy_doesnt_escape_arrays(self):
h = HeapCache()
h.new_array(box1, lengthbox1)
h.new_array(box2, lengthbox2)
h.invalidate_caches(
rop.CALL,
FakeCallDescr(FakeEffectinfo.EF_CANNOT_RAISE, FakeEffectinfo.OS_ARRAYCOPY, write_descrs_arrays=[descr1]),
[None, box2, box1, index1, index1, index2]
)
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
h.invalidate_caches(
rop.CALL,
FakeCallDescr(FakeEffectinfo.EF_CANNOT_RAISE, FakeEffectinfo.OS_ARRAYCOPY, write_descrs_arrays=[descr1]),
[None, box2, box1, index1, index1, BoxInt()]
)
assert not h.is_unescaped(box1)
assert not h.is_unescaped(box2)
def test_unescaped_array(self):
h = HeapCache()
box1 = RefFrontendOp(1)
box2 = RefFrontendOp(2)
lengthbox1 = IntFrontendOp(11)
lengthbox2 = IntFrontendOp(12)
h.new_array(box1, lengthbox1)
assert h.is_unescaped(box1)
h.invalidate_caches(rop.SETARRAYITEM_GC, None, [box1, index1, box2])
assert h.is_unescaped(box1)
h.invalidate_caches(rop.SETARRAYITEM_GC, None, [box2, index1, box1])
assert not h.is_unescaped(box1)
h = HeapCache()
h.new_array(box1, lengthbox1)
h.new(box2)
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
h.invalidate_caches(rop.SETARRAYITEM_GC, None, [box1, lengthbox2, box2])
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
h.invalidate_caches(
rop.CALL_N, FakeCallDescr(FakeEffectinfo.EF_RANDOM_EFFECTS), [box1]
)
assert not h.is_unescaped(box1)
assert not h.is_unescaped(box2)
def test_unescaped_array(self):
h = HeapCache()
box1 = RefFrontendOp(1)
box2 = RefFrontendOp(2)
lengthbox1 = IntFrontendOp(11)
lengthbox2 = IntFrontendOp(12)
h.new_array(box1, lengthbox1)
assert h.is_unescaped(box1)
h.invalidate_caches(rop.SETARRAYITEM_GC, None, [box1, index1, box2])
assert h.is_unescaped(box1)
h.invalidate_caches(rop.SETARRAYITEM_GC, None, [box2, index1, box1])
assert not h.is_unescaped(box1)
h = HeapCache()
h.new_array(box1, lengthbox1)
h.new(box2)
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
h.invalidate_caches(rop.SETARRAYITEM_GC, None, [box1, lengthbox2, box2])
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
h.invalidate_caches(
rop.CALL_N, FakeCallDescr(FakeEffectinfo.EF_RANDOM_EFFECTS), [box1]
)
assert not h.is_unescaped(box1)
assert not h.is_unescaped(box2)
def test_bug_missing_ignored_operations(self):
h = HeapCache()
h.new(box1)
h.new(box2)
h.setfield(box1, box2, descr1)
assert h.getfield(box1, descr1) is box2
h.invalidate_caches(rop.STRSETITEM, None, [])
h.invalidate_caches(rop.UNICODESETITEM, None, [])
h.invalidate_caches(rop.SETFIELD_RAW, None, [])
h.invalidate_caches(rop.SETARRAYITEM_RAW, None, [])
h.invalidate_caches(rop.SETINTERIORFIELD_RAW, None, [])
h.invalidate_caches(rop.RAW_STORE, None, [])
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
assert h.getfield(box1, descr1) is box2
def test_bug_missing_ignored_operations(self):
h = HeapCache()
h.new(box1)
h.new(box2)
h.setfield(box1, box2, descr1)
assert h.getfield(box1, descr1) is box2
h.invalidate_caches(rop.STRSETITEM, None, [])
h.invalidate_caches(rop.UNICODESETITEM, None, [])
h.invalidate_caches(rop.SETFIELD_RAW, None, [])
h.invalidate_caches(rop.SETARRAYITEM_RAW, None, [])
h.invalidate_caches(rop.SETINTERIORFIELD_RAW, None, [])
h.invalidate_caches(rop.RAW_STORE, None, [])
assert h.is_unescaped(box1)
assert h.is_unescaped(box2)
assert h.getfield(box1, descr1) is box2
def test_bug_heap_cache_is_cleared_but_not_is_unescaped_1(self):
# bug if only the getfield() link is cleared (heap_cache) but not
# the is_unescaped() flags: we can do later a GETFIELD(box1) which
# will give us a fresh box3, which is actually equal to box2. This
# box3 is escaped, but box2 is still unescaped. Bug shown e.g. by
# calling some residual code that changes the values on box3: then
# the content of box2 is still cached at the old value.
h = HeapCache()
h.new(box1)
h.new(box2)
h.setfield(box1, box2, descr1)
h.invalidate_caches(rop.SETFIELD_GC, None, [box1, box2])
assert h.getfield(box1, descr1) is box2
h.invalidate_caches(rop.CALL_MAY_FORCE, None, [])
assert not h.is_unescaped(box1)
assert not h.is_unescaped(box2)
assert h.getfield(box1, descr1) is None
def test_bug_heap_cache_is_cleared_but_not_is_unescaped_1(self):
# bug if only the getfield() link is cleared (heap_cache) but not
# the is_unescaped() flags: we can do later a GETFIELD(box1) which
# will give us a fresh box3, which is actually equal to box2. This
# box3 is escaped, but box2 is still unescaped. Bug shown e.g. by
# calling some residual code that changes the values on box3: then
# the content of box2 is still cached at the old value.
h = HeapCache()
h.new(box1)
h.new(box2)
h.setfield(box1, box2, descr1)
h.invalidate_caches(rop.SETFIELD_GC, None, [box1, box2])
assert h.getfield(box1, descr1) is box2
h.invalidate_caches(rop.CALL_MAY_FORCE, None, [])
assert not h.is_unescaped(box1)
assert not h.is_unescaped(box2)
assert h.getfield(box1, descr1) is None
