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import py
from rpython.rtyper.lltypesystem import lltype
from rpython.translator.translator import TranslationContext
from rpython.translator.c.test.test_genc import compile
class TestRefcount(object):
def compile_func(self, func, args):
return compile(func, args, gcpolicy='ref')
def test_something(self):
def f():
return 1
fn = self.compile_func(f, [])
assert fn() == 1
def test_something_more(self):
S = lltype.GcStruct("S", ('x', lltype.Signed))
def f(x):
s = lltype.malloc(S)
s.x = x
return s.x
fn = self.compile_func(f, [int])
assert fn(1) == 1
def test_call_function(self):
class C:
pass
def f():
c = C()
c.x = 1
return c
def g():
return f().x
fn = self.compile_func(g, [])
assert fn() == 1
def test_multiple_exits(self):
S = lltype.GcStruct("S", ('x', lltype.Signed))
T = lltype.GcStruct("T", ('y', lltype.Signed))
def f(n):
c = lltype.malloc(S)
d = lltype.malloc(T)
d.y = 1
e = lltype.malloc(T)
e.y = 2
if n:
x = d
else:
x = e
return x.y
fn = self.compile_func(f, [int])
assert fn(1) == 1
assert fn(0) == 2
def test_cleanup_vars_on_call(self):
S = lltype.GcStruct("S", ('x', lltype.Signed))
def f():
return lltype.malloc(S)
def g():
s1 = f()
s1.x = 42
s2 = f()
s3 = f()
return s1.x
fn = self.compile_func(g, [])
assert fn() == 42
def test_multiply_passed_var(self):
S = lltype.GcStruct("S", ('x', lltype.Signed))
def f(x):
if x:
a = lltype.malloc(S)
a.x = 1
b = a
else:
a = lltype.malloc(S)
a.x = 1
b = lltype.malloc(S)
b.x = 2
return a.x + b.x
fn = self.compile_func(f, [int])
fn(1) == 2
fn(0) == 3
def test_write_barrier(self):
S = lltype.GcStruct("S", ('x', lltype.Signed))
T = lltype.GcStruct("T", ('s', lltype.Ptr(S)))
def f(x):
s = lltype.malloc(S)
s.x = 0
s1 = lltype.malloc(S)
s1.x = 1
s2 = lltype.malloc(S)
s2.x = 2
t = lltype.malloc(T)
t.s = s
if x:
t.s = s1
else:
t.s = s2
return t.s.x + s.x + s1.x + s2.x
fn = self.compile_func(f, [int])
assert fn(1) == 4
assert fn(0) == 5
def test_del_catches(self):
import os
def g():
pass
class A(object):
def __del__(self):
try:
g()
except:
pass #os.write(1, "hallo")
def f1(i):
if i:
raise TypeError
def f(i):
a = A()
f1(i)
a.b = 1
return a.b
fn = self.compile_func(f, [int])
assert fn(0) == 1
fn(1, expected_exception_name="TypeError")
def test_del_raises(self):
class B(object):
def __del__(self):
raise TypeError
def func():
b = B()
fn = self.compile_func(func, [])
# does not crash
fn()
def test_wrong_order_setitem(self):
class A(object):
pass
a = A()
a.b = None
class B(object):
def __del__(self):
a.freed += 1
a.b = None
def f(n):
a.freed = 0
a.b = B()
if n:
a.b = None
return a.freed
fn = self.compile_func(f, [int])
res = fn(1)
assert res == 1
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