1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
|
import weakref
from rpython.rlib import rawrefcount, objectmodel, rgc
from rpython.rlib.rawrefcount import REFCNT_FROM_PYPY, REFCNT_FROM_PYPY_LIGHT
from rpython.rtyper.lltypesystem import lltype, llmemory
from rpython.rtyper.annlowlevel import llhelper
from rpython.translator.c.test.test_standalone import StandaloneTests
from rpython.config.translationoption import get_combined_translation_config
class W_Root(object):
def __init__(self, intval=0):
self.intval = intval
def __nonzero__(self):
raise Exception("you cannot do that, you must use space.is_true()")
PyObjectS = lltype.Struct('PyObjectS',
('c_ob_refcnt', lltype.Signed),
('c_ob_pypy_link', lltype.Signed))
PyObject = lltype.Ptr(PyObjectS)
class TestRawRefCount:
def setup_method(self, meth):
rawrefcount.init()
def test_create_link_pypy(self):
p = W_Root(42)
ob = lltype.malloc(PyObjectS, flavor='raw', zero=True)
assert rawrefcount.from_obj(PyObject, p) == lltype.nullptr(PyObjectS)
assert rawrefcount.to_obj(W_Root, ob) == None
rawrefcount.create_link_pypy(p, ob)
assert ob.c_ob_refcnt == 0
ob.c_ob_refcnt += REFCNT_FROM_PYPY_LIGHT
assert rawrefcount.from_obj(PyObject, p) == ob
assert rawrefcount.to_obj(W_Root, ob) == p
lltype.free(ob, flavor='raw')
def test_create_link_pyobj(self):
p = W_Root(42)
ob = lltype.malloc(PyObjectS, flavor='raw', zero=True)
assert rawrefcount.from_obj(PyObject, p) == lltype.nullptr(PyObjectS)
assert rawrefcount.to_obj(W_Root, ob) == None
rawrefcount.create_link_pyobj(p, ob)
assert ob.c_ob_refcnt == 0
ob.c_ob_refcnt += REFCNT_FROM_PYPY
assert rawrefcount.from_obj(PyObject, p) == lltype.nullptr(PyObjectS)
assert rawrefcount.to_obj(W_Root, ob) == p
lltype.free(ob, flavor='raw')
def test_collect_p_dies(self):
p = W_Root(42)
ob = lltype.malloc(PyObjectS, flavor='raw', zero=True)
rawrefcount.create_link_pypy(p, ob)
ob.c_ob_refcnt += REFCNT_FROM_PYPY_LIGHT
assert rawrefcount._p_list == [ob]
wr_ob = weakref.ref(ob)
wr_p = weakref.ref(p)
del ob, p
rawrefcount._collect()
assert rawrefcount._p_list == []
assert wr_ob() is None
assert wr_p() is None
def test_collect_p_keepalive_pyobject(self):
p = W_Root(42)
ob = lltype.malloc(PyObjectS, flavor='raw', zero=True)
rawrefcount.create_link_pypy(p, ob)
ob.c_ob_refcnt += REFCNT_FROM_PYPY_LIGHT
assert rawrefcount._p_list == [ob]
wr_ob = weakref.ref(ob)
wr_p = weakref.ref(p)
ob.c_ob_refcnt += 1 # <=
del ob, p
rawrefcount._collect()
ob = wr_ob()
p = wr_p()
assert ob is not None and p is not None
assert rawrefcount._p_list == [ob]
assert rawrefcount.to_obj(W_Root, ob) == p
assert rawrefcount.from_obj(PyObject, p) == ob
lltype.free(ob, flavor='raw')
def test_collect_p_keepalive_w_root(self):
p = W_Root(42)
ob = lltype.malloc(PyObjectS, flavor='raw', zero=True)
rawrefcount.create_link_pypy(p, ob)
ob.c_ob_refcnt += REFCNT_FROM_PYPY_LIGHT
assert rawrefcount._p_list == [ob]
wr_ob = weakref.ref(ob)
del ob # p remains
rawrefcount._collect()
ob = wr_ob()
assert ob is not None
assert rawrefcount._p_list == [ob]
assert rawrefcount.to_obj(W_Root, ob) == p
assert rawrefcount.from_obj(PyObject, p) == ob
lltype.free(ob, flavor='raw')
def test_collect_o_dies(self):
trigger = []; rawrefcount.init(lambda: trigger.append(1))
p = W_Root(42)
ob = lltype.malloc(PyObjectS, flavor='raw', zero=True)
rawrefcount.create_link_pyobj(p, ob)
ob.c_ob_refcnt += REFCNT_FROM_PYPY
assert rawrefcount._o_list == [ob]
wr_ob = weakref.ref(ob)
wr_p = weakref.ref(p)
del ob, p
rawrefcount._collect()
ob = wr_ob()
assert ob is not None
assert trigger == [1]
assert rawrefcount.next_dead(PyObject) == ob
assert rawrefcount.next_dead(PyObject) == lltype.nullptr(PyObjectS)
assert rawrefcount.next_dead(PyObject) == lltype.nullptr(PyObjectS)
assert rawrefcount._o_list == []
assert wr_p() is None
assert ob.c_ob_refcnt == 1 # from the pending list
assert ob.c_ob_pypy_link == 0
lltype.free(ob, flavor='raw')
def test_collect_o_keepalive_pyobject(self):
p = W_Root(42)
ob = lltype.malloc(PyObjectS, flavor='raw', zero=True)
p.pyobj = ob
rawrefcount.create_link_pyobj(p, ob)
ob.c_ob_refcnt += REFCNT_FROM_PYPY
assert rawrefcount._o_list == [ob]
wr_ob = weakref.ref(ob)
wr_p = weakref.ref(p)
ob.c_ob_refcnt += 1 # <=
del p
rawrefcount._collect()
p = wr_p()
assert p is None # was unlinked
assert ob.c_ob_refcnt == 1 # != REFCNT_FROM_PYPY_OBJECT + 1
assert rawrefcount._o_list == []
assert rawrefcount.to_obj(W_Root, ob) == None
lltype.free(ob, flavor='raw')
def test_collect_o_keepalive_w_root(self):
p = W_Root(42)
ob = lltype.malloc(PyObjectS, flavor='raw', zero=True)
p.pyobj = ob
rawrefcount.create_link_pyobj(p, ob)
ob.c_ob_refcnt += REFCNT_FROM_PYPY
assert rawrefcount._o_list == [ob]
wr_ob = weakref.ref(ob)
del ob # p remains
rawrefcount._collect()
ob = wr_ob()
assert ob is not None
assert rawrefcount._o_list == [ob]
assert rawrefcount.to_obj(W_Root, ob) == p
assert p.pyobj == ob
lltype.free(ob, flavor='raw')
def test_collect_s_dies(self):
trigger = []; rawrefcount.init(lambda: trigger.append(1))
p = W_Root(42)
ob = lltype.malloc(PyObjectS, flavor='raw', zero=True)
rawrefcount.create_link_pypy(p, ob)
ob.c_ob_refcnt += REFCNT_FROM_PYPY
assert rawrefcount._p_list == [ob]
wr_ob = weakref.ref(ob)
wr_p = weakref.ref(p)
del ob, p
rawrefcount._collect()
ob = wr_ob()
assert ob is not None
assert trigger == [1]
assert rawrefcount._d_list == [ob]
assert rawrefcount._p_list == []
assert wr_p() is None
assert ob.c_ob_refcnt == 1 # from _d_list
assert ob.c_ob_pypy_link == 0
lltype.free(ob, flavor='raw')
def test_collect_s_keepalive_pyobject(self):
p = W_Root(42)
ob = lltype.malloc(PyObjectS, flavor='raw', zero=True)
p.pyobj = ob
rawrefcount.create_link_pypy(p, ob)
ob.c_ob_refcnt += REFCNT_FROM_PYPY
assert rawrefcount._p_list == [ob]
wr_ob = weakref.ref(ob)
wr_p = weakref.ref(p)
ob.c_ob_refcnt += 1 # <=
del ob, p
rawrefcount._collect()
ob = wr_ob()
p = wr_p()
assert ob is not None and p is not None
assert rawrefcount._p_list == [ob]
assert rawrefcount.to_obj(W_Root, ob) == p
lltype.free(ob, flavor='raw')
def test_collect_s_keepalive_w_root(self):
p = W_Root(42)
ob = lltype.malloc(PyObjectS, flavor='raw', zero=True)
p.pyobj = ob
rawrefcount.create_link_pypy(p, ob)
ob.c_ob_refcnt += REFCNT_FROM_PYPY
assert rawrefcount._p_list == [ob]
wr_ob = weakref.ref(ob)
del ob # p remains
rawrefcount._collect()
ob = wr_ob()
assert ob is not None
assert rawrefcount._p_list == [ob]
assert rawrefcount.to_obj(W_Root, ob) == p
lltype.free(ob, flavor='raw')
class TestTranslated(StandaloneTests):
def test_full_translation(self):
class State:
pass
state = State()
state.seen = []
def dealloc_trigger():
state.seen.append(1)
def make_p():
p = W_Root(42)
ob = lltype.malloc(PyObjectS, flavor='raw', zero=True)
rawrefcount.create_link_pypy(p, ob)
ob.c_ob_refcnt += REFCNT_FROM_PYPY
assert rawrefcount.from_obj(PyObject, p) == ob
assert rawrefcount.to_obj(W_Root, ob) == p
return ob, p
FTYPE = rawrefcount.RAWREFCOUNT_DEALLOC_TRIGGER
def entry_point(argv):
ll_dealloc_trigger_callback = llhelper(FTYPE, dealloc_trigger)
rawrefcount.init(ll_dealloc_trigger_callback)
ob, p = make_p()
if state.seen != []:
print "OB COLLECTED REALLY TOO SOON"
return 1
rgc.collect()
if state.seen != []:
print "OB COLLECTED TOO SOON"
return 1
objectmodel.keepalive_until_here(p)
p = None
rgc.collect()
if state.seen != [1]:
print "OB NOT COLLECTED"
return 1
if rawrefcount.next_dead(PyObject) != ob:
print "NEXT_DEAD != OB"
return 1
if rawrefcount.next_dead(PyObject) != lltype.nullptr(PyObjectS):
print "NEXT_DEAD second time != NULL"
return 1
print "OK!"
lltype.free(ob, flavor='raw')
return 0
self.config = get_combined_translation_config(translating=True)
self.config.translation.gc = "incminimark"
t, cbuilder = self.compile(entry_point)
data = cbuilder.cmdexec('hi there')
assert data.startswith('OK!\n')
|
