FazBrowse GitHub Viewer
|
Trending
|
URL:
|
Home
Tools:
[Download Repo ZIP]
[View Raw Code]
[Original HTTPS Page]
RustPython/extra_tests/test_manager_fork_debug.py at main · techdragon/RustPython · GitHub
techdragon
RustPython
Repository navigation
Code
Pull requests
Actions
Projects
Security and quality
Insights
Expand file tree
Breadcrumbs
RustPython
/
extra_tests
/
test_manager_fork_debug.py
Copy path
More file actions
More file actions
Latest commit
History
History
History
149 lines (123 loc) · 4.32 KB
Breadcrumbs
RustPython
/
extra_tests
/
test_manager_fork_debug.py
Copy path
File metadata and controls
149 lines (123 loc) · 4.32 KB
Raw
Copy raw file
Download raw file
Open symbols panel
Edit and raw actions
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
"""Minimal reproduction of multiprocessing Manager + fork failure."""
import
multiprocessing
import
os
import
sys
import
time
import
traceback
import
pytest
pytestmark
=
pytest
.
mark
.
skipif
(
not
hasattr
(
os
,
"fork"
),
reason
=
"requires os.fork"
)
def
test_basic_manager
():
"""Test Manager without fork - does it work at all?"""
print
(
"=== Test 1: Basic Manager (no fork) ==="
)
ctx
=
multiprocessing
.
get_context
(
"fork"
)
manager
=
ctx
.
Manager
()
try
:
ev
=
manager
.
Event
()
print
(
f" Event created:
{
ev
}
"
)
ev
.
set
()
print
(
f" Event set, is_set=
{
ev
.
is_set
()
}
"
)
assert
ev
.
is_set
()
print
(
" PASS"
)
finally
:
manager
.
shutdown
()
def
test_manager_with_process
():
"""Test Manager shared between parent and child process."""
print
(
"
\n
=== Test 2: Manager with forked child ==="
)
ctx
=
multiprocessing
.
get_context
(
"fork"
)
manager
=
ctx
.
Manager
()
try
:
result
=
manager
.
Value
(
"i"
,
0
)
ev
=
manager
.
Event
()
def
child_fn
():
try
:
ev
.
set
()
result
.
value
=
42
except
Exception
as
e
:
print
(
f" CHILD ERROR:
{
e
}
"
,
file
=
sys
.
stderr
)
traceback
.
print_exc
()
sys
.
exit
(
1
)
print
(
f" Starting child process..."
)
process
=
ctx
.
Process
(
target
=
child_fn
)
process
.
start
()
print
(
f" Waiting for child (pid=
{
process
.
pid
}
)..."
)
process
.
join
(
timeout
=
10
)
if
process
.
exitcode
!=
0
:
print
(
f" FAIL: child exited with code
{
process
.
exitcode
}
"
)
return
False
print
(
f" Child done. result=
{
result
.
value
}
, event=
{
ev
.
is_set
()
}
"
)
assert
result
.
value
==
42
assert
ev
.
is_set
()
print
(
" PASS"
)
return
True
finally
:
manager
.
shutdown
()
def
test_manager_server_alive_after_fork
():
"""Test that Manager server survives after forking a child."""
print
(
"
\n
=== Test 3: Manager server alive after fork ==="
)
ctx
=
multiprocessing
.
get_context
(
"fork"
)
manager
=
ctx
.
Manager
()
try
:
ev
=
manager
.
Event
()
# Fork a child that does nothing with the manager
pid
=
os
.
fork
()
if
pid
==
0
:
# Child - exit immediately
os
.
_exit
(
0
)
# Parent - wait for child
os
.
waitpid
(
pid
,
0
)
# Now try to use the manager in the parent
print
(
f" After fork, trying to use Manager in parent..."
)
ev
.
set
()
print
(
f" ev.is_set() =
{
ev
.
is_set
()
}
"
)
assert
ev
.
is_set
()
print
(
" PASS"
)
return
True
finally
:
manager
.
shutdown
()
def
test_manager_server_alive_after_fork_with_child_usage
():
"""Test that Manager server survives when child also uses it."""
print
(
"
\n
=== Test 4: Manager server alive after fork + child usage ==="
)
ctx
=
multiprocessing
.
get_context
(
"fork"
)
manager
=
ctx
.
Manager
()
try
:
child_ev
=
manager
.
Event
()
parent_ev
=
manager
.
Event
()
def
child_fn
():
try
:
child_ev
.
set
()
except
Exception
as
e
:
print
(
f" CHILD ERROR:
{
e
}
"
,
file
=
sys
.
stderr
)
traceback
.
print_exc
()
sys
.
exit
(
1
)
process
=
ctx
.
Process
(
target
=
child_fn
)
process
.
start
()
process
.
join
(
timeout
=
10
)
if
process
.
exitcode
!=
0
:
print
(
f" FAIL: child exited with code
{
process
.
exitcode
}
"
)
return
False
# Now use manager in parent AFTER child is done
print
(
f" Child done. Trying parent usage..."
)
parent_ev
.
set
()
print
(
f" child_ev=
{
child_ev
.
is_set
()
}
, parent_ev=
{
parent_ev
.
is_set
()
}
"
)
assert
child_ev
.
is_set
()
assert
parent_ev
.
is_set
()
print
(
" PASS"
)
return
True
finally
:
manager
.
shutdown
()
if
__name__
==
"__main__"
:
test_basic_manager
()
passed
=
0
total
=
10
for
i
in
range
(
total
):
print
(
f"
\n
--- Iteration
{
i
+
1
}
/
{
total
}
---"
)
ok
=
True
ok
=
ok
and
test_manager_with_process
()
ok
=
ok
and
test_manager_server_alive_after_fork
()
ok
=
ok
and
test_manager_server_alive_after_fork_with_child_usage
()
if
ok
:
passed
+=
1
else
:
print
(
f" FAILED on iteration
{
i
+
1
}
"
)
print
(
f"
\n
=== Results:
{
passed
}
/
{
total
}
passed ==="
)
sys
.
exit
(
0
if
passed
==
total
else
1
)
Back
|
FazBrowse Home
|
New Git URL