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
|
"""
Test number of threads.
"""
from __future__ import print_function
import os, time
import lldb
from lldbsuite.test.lldbtest import *
import lldbsuite.test.lldbutil as lldbutil
class ExitDuringStepTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
@expectedFailureDarwin("llvm.org/pr15824") # thread states not properly maintained
@expectedFailureFreeBSD("llvm.org/pr18190") # thread states not properly maintained
@expectedFailureLinux("llvm.org/pr15824") # thread states not properly maintained
@expectedFailureWindows("llvm.org/pr24681")
def test_thread_state_is_stopped(self):
"""Test thread exit during step handling."""
self.build(dictionary=self.getBuildFlags())
self.exit_during_step_base("thread step-in -m all-threads", 'stop reason = step in', True)
@skipIfFreeBSD # llvm.org/pr21411: test is hanging
@expectedFailureWindows("llvm.org/pr24681")
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', False)
@skipIfFreeBSD # llvm.org/pr21411: test is hanging
@expectedFailureWindows("llvm.org/pr24681")
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
@expectedFailureWindows("llvm.org/pr24681")
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, test_thread_state):
"""Test thread exit during step handling."""
exe = os.path.join(os.getcwd(), "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()
# Get the number of threads
num_threads = process.GetNumThreads()
# Make sure we see all three threads
self.assertTrue(num_threads == 3, 'Number of expected threads and actual threads do not match.')
# Get the thread objects
thread1 = process.GetThreadAtIndex(0)
thread2 = process.GetThreadAtIndex(1)
thread3 = process.GetThreadAtIndex(2)
# Make sure all threads are stopped
if test_thread_state:
self.assertTrue(thread1.IsStopped(), "Thread 1 didn't stop during breakpoint")
self.assertTrue(thread2.IsStopped(), "Thread 2 didn't stop during breakpoint")
self.assertTrue(thread3.IsStopped(), "Thread 3 didn't stop during breakpoint")
return
# Find the thread that is stopped at the breakpoint
stepping_thread = None
for thread in process:
expected_bp_desc = "breakpoint %s." % self.bp_num
stop_desc = thread.GetStopDescription(100)
if stop_desc and (expected_bp_desc in stop_desc):
stepping_thread = thread
break
self.assertTrue(stepping_thread != None, "unable to find thread stopped at %s" % expected_bp_desc)
current_line = self.breakpoint
stepping_frame = stepping_thread.GetFrameAtIndex(0)
self.assertTrue(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()
self.assertTrue(current_line >= self.breakpoint, "Stepped to unexpected line, " + str(current_line))
self.assertTrue(current_line <= self.continuepoint, "Stepped to unexpected line, " + str(current_line))
self.runCmd("thread list")
# Update the number of threads
num_threads = process.GetNumThreads()
# Check to see that we reduced the number of threads as expected
self.assertTrue(num_threads == 2, 'Number of expected threads and actual threads do not match 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.assertTrue(process.GetState() == lldb.eStateExited, PROCESS_EXITED)
|
