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import py, sys, zlib, re
from pypy.tool import gdb_pypy
class FakeGdb(object):
COMMAND_NONE = -1
#
TYPE_CODE_PTR = 1
TYPE_CODE_ARRAY = 2
TYPE_CODE_STRUCT = 3
def __init__(self, typeids, exprs):
self.typeids_z = zlib.compress(typeids)
exprs['*(long*)pypy_g_rpython_memory_gctypelayout_GCData'
'.gcd_inst_typeids_z'] = len(self.typeids_z)
self.exprs = exprs
self._parsed = []
def parse_and_eval(self, expr):
self._parsed.append(expr)
return self.exprs[expr]
def execute(self, command):
r = re.compile(r"dump binary memory (\S+) (\S+) (\S+)$")
match = r.match(command)
assert match
fn, start, stop = match.groups()
assert start == (
'(char*)(((long*)pypy_g_rpython_memory_gctypelayout_GCData'
'.gcd_inst_typeids_z)+1)')
assert stop == (
'(char*)(((long*)pypy_g_rpython_memory_gctypelayout_GCData'
'.gcd_inst_typeids_z)+1)+%d' % (len(self.typeids_z),))
with open(fn, 'wb') as f:
f.write(self.typeids_z)
class Mock(object):
def __init__(self, **attrs):
self.__dict__.update(attrs)
class Field(Mock):
pass
class Struct(object):
code = FakeGdb.TYPE_CODE_STRUCT
def __init__(self, fieldnames, tag):
self._fields = [Field(name=name) for name in fieldnames]
self.tag = tag
def fields(self):
return self._fields[:]
class Pointer(object):
code = FakeGdb.TYPE_CODE_PTR
def __init__(self, target):
self._target = target
def target(self):
return self._target
class Value(dict):
def __init__(self, *args, **kwds):
type_tag = kwds.pop('type_tag', None)
dict.__init__(self, *args, **kwds)
self.type = Struct(self.keys(), type_tag)
for key, val in self.iteritems():
if isinstance(val, dict):
self[key] = Value(val)
class PtrValue(Value):
def __init__(self, *args, **kwds):
# in python gdb, we can use [] to access fields either if we have an
# actual struct or a pointer to it, so we just reuse Value here
Value.__init__(self, *args, **kwds)
self.type = Pointer(self.type)
def test_mock_objects():
d = {'a': 1,
'b': 2,
'super': {
'c': 3,
}
}
val = Value(d)
assert val['a'] == 1
assert val['b'] == 2
assert isinstance(val['super'], Value)
assert val['super']['c'] == 3
fields = val.type.fields()
names = [f.name for f in fields]
assert sorted(names) == ['a', 'b', 'super']
def test_find_field_with_suffix():
obj = Value(x_foo = 1,
y_bar = 2,
z_foobar = 3)
assert gdb_pypy.find_field_with_suffix(obj, 'foo') == 1
assert gdb_pypy.find_field_with_suffix(obj, 'foobar') == 3
py.test.raises(KeyError, "gdb_pypy.find_field_with_suffix(obj, 'bar')")
py.test.raises(KeyError, "gdb_pypy.find_field_with_suffix(obj, 'xxx')")
def test_lookup():
d = {'r_super': {
'_gcheader': {
'h_tid': 123,
}
},
'r_foo': 42,
}
obj = Value(d)
assert gdb_pypy.lookup(obj, 'foo') == 42
hdr = gdb_pypy.lookup(obj, 'gcheader')
assert hdr['h_tid'] == 123
def exprmember(n):
if sys.maxint < 2**32:
TIDT = "int*"
else:
TIDT = "char*"
return ('((%s)(&pypy_g_typeinfo.member%d)) - (%s)&pypy_g_typeinfo'
% (TIDT, n, TIDT))
def test_load_typeids(tmpdir):
typeids = """
member0 ?
member1 GcStruct xxx {}
""".lstrip()
exprs = {exprmember(1): 111}
gdb = FakeGdb(typeids, exprs)
cmd = gdb_pypy.RPyType(gdb)
typeids = cmd.load_typeids()
assert typeids[0] == '(null typeid)'
assert typeids[111] == 'GcStruct xxx {}'
py.test.raises(KeyError, "typeids[50]")
py.test.raises(KeyError, "typeids[150]")
def test_RPyType(tmpdir):
typeids = """
member0 ?
member1 GcStruct xxx {}
member2 GcStruct yyy {}
member3 GcStruct zzz {}
""".lstrip()
#
d = {'r_super': {
'_gcheader': {
'h_tid': 123,
}
},
'r_foo': 42,
}
myvar = Value(d)
exprs = {
'*myvar': myvar,
exprmember(1): 0,
exprmember(2): 123,
exprmember(3): 456,
}
gdb = FakeGdb(typeids, exprs)
cmd = gdb_pypy.RPyType(gdb)
assert cmd.do_invoke('*myvar', True) == 'GcStruct yyy {}'
def test_pprint_string(monkeypatch):
d = {'_gcheader': {
'h_tid': 123
},
'rs_hash': 456,
'rs_chars': {
'length': 6,
'items': map(ord, 'foobar'),
}
}
p_string = PtrValue(d, type_tag='pypy_rpy_string0')
printer = gdb_pypy.RPyStringPrinter.lookup(p_string, FakeGdb)
assert printer.to_string() == "r'foobar'"
monkeypatch.setattr(gdb_pypy, 'MAX_DISPLAY_LENGTH', 5)
assert printer.to_string() == "r'fooba...'"
def test_pprint_list():
d = {'_gcheader': {
'h_tid': 123
},
'l_length': 3, # the lenght of the rpython list
'l_items':
# this is the array which contains the items
{'_gcheader': {
'h_tid': 456
},
'length': 5, # the lenght of the underlying array
'items': [40, 41, 42, -1, -2],
}
}
mylist = PtrValue(d, type_tag='pypy_list0')
printer = gdb_pypy.RPyListPrinter.lookup(mylist, FakeGdb)
assert printer.to_string() == 'r[40, 41, 42] (len=3, alloc=5)'
#
mylist.type.target().tag = 'pypy_list1234'
printer = gdb_pypy.RPyListPrinter.lookup(mylist, FakeGdb)
assert printer.to_string() == 'r[40, 41, 42] (len=3, alloc=5)'
mylist.type.target().tag = None
assert gdb_pypy.RPyListPrinter.lookup(mylist, FakeGdb) is None
def test_pprint_array():
d = {'_gcheder': {'h_tid': 234}, 'length': 3, 'items': [20, 21, 22]}
mylist = PtrValue(d, type_tag='pypy_array1')
printer = gdb_pypy.RPyListPrinter.lookup(mylist, FakeGdb)
assert printer.to_string() == 'r[20, 21, 22] (len=3)'
def test_pprint_null_list():
mylist = PtrValue({}, type_tag='pypy_list1')
printer = gdb_pypy.RPyListPrinter.lookup(mylist, FakeGdb)
assert printer.to_string() == 'r(null_list)'
def test_pprint_null_array():
mylist = PtrValue({}, type_tag='pypy_array1')
printer = gdb_pypy.RPyListPrinter.lookup(mylist, FakeGdb)
assert printer.to_string() == 'r(null_array)'
def test_typeidsmap():
gdb = FakeGdb('', {exprmember(1): 111,
exprmember(2): 222,
exprmember(3): 333})
typeids = gdb_pypy.TypeIdsMap(["member0 ?\n",
"member1 FooBar\n",
"member2 Baz\n",
"member3 Bok\n"], gdb)
assert gdb._parsed == []
assert typeids.get(111) == "FooBar"
assert gdb._parsed == [exprmember(2), exprmember(1)]
assert typeids.get(222) == "Baz"
assert gdb._parsed == [exprmember(2), exprmember(1)]
assert typeids.get(333) == "Bok"
assert gdb._parsed == [exprmember(2), exprmember(1), exprmember(3)]
assert typeids.get(400) == None
assert typeids.get(300) == None
assert typeids.get(200) == None
assert typeids.get(100) == None
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