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
|
"""
Test lldb core component: SourceManager.
Test cases:
o test_display_source_python:
Test display of source using the SBSourceManager API.
o test_modify_source_file_while_debugging:
Test the caching mechanism of the source manager.
"""
from __future__ import print_function
import lldb
from lldbsuite.test.lldbtest import *
import lldbsuite.test.lldbutil as lldbutil
class SourceManagerTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line number to break inside main().
self.line = line_number('main.c', '// Set break point at this line.')
@add_test_categories(['pyapi'])
def test_display_source_python(self):
"""Test display of source using the SBSourceManager API."""
self.build()
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
# Launch the process, and do not stop at the entry point.
process = target.LaunchSimple (None, None, self.get_process_working_directory())
#
# Exercise Python APIs to display source lines.
#
# Create the filespec for 'main.c'.
filespec = lldb.SBFileSpec('main.c', False)
source_mgr = self.dbg.GetSourceManager()
# Use a string stream as the destination.
stream = lldb.SBStream()
source_mgr.DisplaySourceLinesWithLineNumbers(filespec,
self.line,
2, # context before
2, # context after
"=>", # prefix for current line
stream)
# 2
# 3 int main(int argc, char const *argv[]) {
# => 4 printf("Hello world.\n"); // Set break point at this line.
# 5 return 0;
# 6 }
self.expect(stream.GetData(), "Source code displayed correctly",
exe=False,
patterns = ['=> %d.*Hello world' % self.line])
# Boundary condition testings for SBStream(). LLDB should not crash!
stream.Print(None)
stream.RedirectToFile(None, True)
def test_move_and_then_display_source(self):
"""Test that target.source-map settings work by moving main.c to hidden/main.c."""
self.build()
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Move main.c to hidden/main.c.
main_c = "main.c"
main_c_hidden = os.path.join("hidden", main_c)
os.rename(main_c, main_c_hidden)
if self.TraceOn():
system([["ls"]])
system([["ls", "hidden"]])
# Restore main.c after the test.
self.addTearDownHook(lambda: os.rename(main_c_hidden, main_c))
# Set target.source-map settings.
self.runCmd("settings set target.source-map %s %s" % (os.getcwd(), os.path.join(os.getcwd(), "hidden")))
# And verify that the settings work.
self.expect("settings show target.source-map",
substrs = [os.getcwd(), os.path.join(os.getcwd(), "hidden")])
# Display main() and verify that the source mapping has been kicked in.
self.expect("source list -n main", SOURCE_DISPLAYED_CORRECTLY,
substrs = ['Hello world'])
def test_modify_source_file_while_debugging(self):
"""Modify a source file while debugging the executable."""
self.build()
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
lldbutil.run_break_set_by_file_and_line (self, "main.c", self.line, num_expected_locations=1, loc_exact=True)
self.runCmd("run", RUN_SUCCEEDED)
# The stop reason of the thread should be breakpoint.
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs = ['stopped',
'main.c:%d' % self.line,
'stop reason = breakpoint'])
# Display some source code.
self.expect("source list -f main.c -l %d" % self.line, SOURCE_DISPLAYED_CORRECTLY,
substrs = ['Hello world'])
# The '-b' option shows the line table locations from the debug information
# that indicates valid places to set source level breakpoints.
# The file to display is implicit in this case.
self.runCmd("source list -l %d -c 3 -b" % self.line)
output = self.res.GetOutput().splitlines()[0]
# If the breakpoint set command succeeded, we should expect a positive number
# of breakpoints for the current line, i.e., self.line.
import re
m = re.search('^\[(\d+)\].*// Set break point at this line.', output)
if not m:
self.fail("Fail to display source level breakpoints")
self.assertTrue(int(m.group(1)) > 0)
# Read the main.c file content.
with open('main.c', 'r') as f:
original_content = f.read()
if self.TraceOn():
print("original content:", original_content)
# Modify the in-memory copy of the original source code.
new_content = original_content.replace('Hello world', 'Hello lldb', 1)
# This is the function to restore the original content.
def restore_file():
#print("os.path.getmtime() before restore:", os.path.getmtime('main.c'))
time.sleep(1)
with open('main.c', 'wb') as f:
f.write(original_content)
if self.TraceOn():
with open('main.c', 'r') as f:
print("content restored to:", f.read())
# Touch the file just to be sure.
os.utime('main.c', None)
if self.TraceOn():
print("os.path.getmtime() after restore:", os.path.getmtime('main.c'))
# Modify the source code file.
with open('main.c', 'wb') as f:
time.sleep(1)
f.write(new_content)
if self.TraceOn():
print("new content:", new_content)
print("os.path.getmtime() after writing new content:", os.path.getmtime('main.c'))
# Add teardown hook to restore the file to the original content.
self.addTearDownHook(restore_file)
# Display the source code again. We should see the updated line.
self.expect("source list -f main.c -l %d" % self.line, SOURCE_DISPLAYED_CORRECTLY,
substrs = ['Hello lldb'])
|
