def _test_size_limit(self, toobig):
import sys
from rpython.rtyper.lltypesystem import llgroup
from rpython.rtyper.lltypesystem.lloperation import llop
from rpython.translator.platform import CompilationError
if toobig and sys.maxint > 2147483647:
py.test.skip("not easy to test groups too big on 64-bit platforms")
grp = llgroup.group("big")
S1 = Struct('S1', ('x', Signed), ('y', Signed),
('z', Signed), ('u', Signed),
('x2', Signed), ('y2', Signed),
('z2', Signed), ('u2', Signed),
('x3', Signed), ('y3', Signed),
('z3', Signed), ('u3', Signed),
('x4', Signed), ('y4', Signed),
('z4', Signed), ('u4', Signed))
goffsets = []
for i in range(4096 + toobig):
ofs = grp.add_member(malloc(S1, immortal=True))
goffsets.append(llgroup.CombinedSymbolic(ofs, 0))
grpptr = grp._as_ptr()
def f(n):
o = llop.extract_ushort(llgroup.HALFWORD, goffsets[n])
p = llop.get_group_member(Ptr(S1), grpptr, o)
p.x = 5
for i in range(len(goffsets)):
if i != n:
o = llop.extract_ushort(llgroup.HALFWORD, goffsets[i])
q = llop.get_group_member(Ptr(S1), grpptr, o)
q.x = 666
return p.x
if toobig:
py.test.raises(CompilationError, self.getcompiled, f, [int])
else:
fn = self.getcompiled(f, [int])
res = fn(len(goffsets)-1)
assert res == 5
def op_combine_ushort(ushort, rest):
from rpython.rtyper.lltypesystem import llgroup
return llgroup.CombinedSymbolic(ushort, rest)