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
|
"""
Test number of threads.
"""
from __future__ import print_function
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class ExitDuringStepTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
@skipIfFreeBSD # llvm.org/pr21411: test is hanging
@skipIfWindows # This is flakey on Windows: llvm.org/pr38373
@expectedFailureNetBSD
def test(self):
"""Test thread exit during step handling."""
self.build(dictionary=self.getBuildFlags())
self.exit_during_step_base(
"thread step-inst -m all-threads",
'stop reason = instruction step',
True)
@skipIfFreeBSD # llvm.org/pr21411: test is hanging
@skipIfWindows # This is flakey on Windows: llvm.org/pr38373
@expectedFailureNetBSD
def test_step_over(self):
"""Test thread exit during step-over handling."""
self.build(dictionary=self.getBuildFlags())
self.exit_during_step_base(
"thread step-over -m all-threads",
'stop reason = step over',
False)
@skipIfFreeBSD # llvm.org/pr21411: test is hanging
@skipIfWindows # This is flakey on Windows: llvm.org/pr38373
@expectedFailureNetBSD
def test_step_in(self):
"""Test thread exit during step-in handling."""
self.build(dictionary=self.getBuildFlags())
self.exit_during_step_base(
"thread step-in -m all-threads",
'stop reason = step in',
False)
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line numbers to break and continue.
self.breakpoint = line_number('main.cpp', '// Set breakpoint here')
self.continuepoint = line_number('main.cpp', '// Continue from here')
def exit_during_step_base(self, step_cmd, step_stop_reason, by_instruction):
"""Test thread exit during step handling."""
exe = self.getBuildArtifact("a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# This should create a breakpoint in the main thread.
self.bp_num = lldbutil.run_break_set_by_file_and_line(
self, "main.cpp", self.breakpoint, num_expected_locations=1)
# The breakpoint list should show 1 location.
self.expect(
"breakpoint list -f",
"Breakpoint location shown correctly",
substrs=[
"1: file = 'main.cpp', line = %d, exact_match = 0, locations = 1" %
self.breakpoint])
# Run the program.
self.runCmd("run", RUN_SUCCEEDED)
# The stop reason of the thread should be breakpoint.
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs=['stopped',
'stop reason = breakpoint'])
# Get the target process
target = self.dbg.GetSelectedTarget()
process = target.GetProcess()
num_threads = process.GetNumThreads()
# Make sure we see all three threads
self.assertGreaterEqual(
num_threads,
3,
'Number of expected threads and actual threads do not match.')
stepping_thread = lldbutil.get_one_thread_stopped_at_breakpoint_id(
process, self.bp_num)
self.assertIsNotNone(
stepping_thread,
"Could not find a thread stopped at the breakpoint")
current_line = self.breakpoint
stepping_frame = stepping_thread.GetFrameAtIndex(0)
self.assertEqual(
current_line,
stepping_frame.GetLineEntry().GetLine(),
"Starting line for stepping doesn't match breakpoint line.")
# Keep stepping until we've reached our designated continue point
while current_line != self.continuepoint:
# Since we're using the command interpreter to issue the thread command
# (on the selected thread) we need to ensure the selected thread is the
# stepping thread.
if stepping_thread != process.GetSelectedThread():
process.SetSelectedThread(stepping_thread)
self.runCmd(step_cmd)
frame = stepping_thread.GetFrameAtIndex(0)
current_line = frame.GetLineEntry().GetLine()
if by_instruction and current_line == 0:
continue
self.assertGreaterEqual(
current_line,
self.breakpoint,
"Stepped to unexpected line, " +
str(current_line))
self.assertLessEqual(
current_line,
self.continuepoint,
"Stepped to unexpected line, " +
str(current_line))
self.runCmd("thread list")
# Update the number of threads
new_num_threads = process.GetNumThreads()
# Check to see that we reduced the number of threads as expected
self.assertEqual(
new_num_threads,
num_threads - 1,
'Number of threads did not reduce by 1 after thread exit.')
self.expect("thread list", 'Process state is stopped due to step',
substrs=['stopped',
step_stop_reason])
# Run to completion
self.runCmd("continue")
# At this point, the inferior process should have exited.
self.assertEqual(process.GetState(), lldb.eStateExited, PROCESS_EXITED)
|
