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
| """
Test breakpoint conditions with 'breakpoint modify -c <expr> id'.
"""
from __future__ import print_function
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class BreakpointConditionsTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
def test_breakpoint_condition_and_run_command(self):
"""Exercise breakpoint condition with 'breakpoint modify -c <expr> id'."""
self.build()
self.breakpoint_conditions()
def test_breakpoint_condition_inline_and_run_command(self):
"""Exercise breakpoint condition inline with 'breakpoint set'."""
self.build()
self.breakpoint_conditions(inline=True)
@add_test_categories(['pyapi'])
def test_breakpoint_condition_and_python_api(self):
"""Use Python APIs to set breakpoint conditions."""
self.build()
self.breakpoint_conditions_python()
@add_test_categories(['pyapi'])
def test_breakpoint_invalid_condition_and_python_api(self):
"""Use Python APIs to set breakpoint conditions."""
self.build()
self.breakpoint_invalid_conditions_python()
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line number to of function 'c'.
self.line1 = line_number(
'main.c', '// Find the line number of function "c" here.')
self.line2 = line_number(
'main.c', "// Find the line number of c's parent call here.")
def breakpoint_conditions(self, inline=False):
"""Exercise breakpoint condition with 'breakpoint modify -c <expr> id'."""
exe = self.getBuildArtifact("a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
if inline:
# Create a breakpoint by function name 'c' and set the condition.
lldbutil.run_break_set_by_symbol(
self,
"c",
extra_options="-c 'val == 3'",
num_expected_locations=1,
sym_exact=True)
else:
# Create a breakpoint by function name 'c'.
lldbutil.run_break_set_by_symbol(
self, "c", num_expected_locations=1, sym_exact=True)
# And set a condition on the breakpoint to stop on when 'val == 3'.
self.runCmd("breakpoint modify -c 'val == 3' 1")
# Now run the program.
self.runCmd("run", RUN_SUCCEEDED)
# The process should be stopped at this point.
self.expect("process status", PROCESS_STOPPED,
patterns=['Process .* stopped'])
# 'frame variable --show-types val' should return 3 due to breakpoint condition.
self.expect(
"frame variable --show-types val",
VARIABLES_DISPLAYED_CORRECTLY,
startstr='(int) val = 3')
# Also check the hit count, which should be 3, by design.
self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE,
substrs=["resolved = 1",
"Condition: val == 3",
"hit count = 1"])
# The frame #0 should correspond to main.c:36, the executable statement
# in function name 'c'. And the parent frame should point to
# main.c:24.
self.expect("thread backtrace", STOPPED_DUE_TO_BREAKPOINT_CONDITION,
#substrs = ["stop reason = breakpoint"],
patterns=["frame #0.*main.c:%d" % self.line1,
"frame #1.*main.c:%d" % self.line2])
# Test that "breakpoint modify -c ''" clears the condition for the last
# created breakpoint, so that when the breakpoint hits, val == 1.
self.runCmd("process kill")
self.runCmd("breakpoint modify -c ''")
self.expect(
"breakpoint list -f",
BREAKPOINT_STATE_CORRECT,
matching=False,
substrs=["Condition:"])
# Now run the program again.
self.runCmd("run", RUN_SUCCEEDED)
# The process should be stopped at this point.
self.expect("process status", PROCESS_STOPPED,
patterns=['Process .* stopped'])
# 'frame variable --show-types val' should return 1 since it is the first breakpoint hit.
self.expect(
"frame variable --show-types val",
VARIABLES_DISPLAYED_CORRECTLY,
startstr='(int) val = 1')
self.runCmd("process kill")
def breakpoint_conditions_python(self):
"""Use Python APIs to set breakpoint conditions."""
exe = self.getBuildArtifact("a.out")
# Create a target by the debugger.
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
# Now create a breakpoint on main.c by name 'c'.
breakpoint = target.BreakpointCreateByName('c', 'a.out')
#print("breakpoint:", breakpoint)
self.assertTrue(breakpoint and
breakpoint.GetNumLocations() == 1,
VALID_BREAKPOINT)
# We didn't associate a thread index with the breakpoint, so it should
# be invalid.
self.assertTrue(breakpoint.GetThreadIndex() == lldb.UINT32_MAX,
"The thread index should be invalid")
# The thread name should be invalid, too.
self.assertTrue(breakpoint.GetThreadName() is None,
"The thread name should be invalid")
# Let's set the thread index for this breakpoint and verify that it is,
# indeed, being set correctly.
# There's only one thread for the process.
breakpoint.SetThreadIndex(1)
self.assertTrue(breakpoint.GetThreadIndex() == 1,
"The thread index has been set correctly")
# Get the breakpoint location from breakpoint after we verified that,
# indeed, it has one location.
location = breakpoint.GetLocationAtIndex(0)
self.assertTrue(location and
location.IsEnabled(),
VALID_BREAKPOINT_LOCATION)
# Set the condition on the breakpoint location.
location.SetCondition('val == 3')
self.expect(location.GetCondition(), exe=False,
startstr='val == 3')
# Now launch the process, and do not stop at entry point.
process = target.LaunchSimple(
None, None, self.get_process_working_directory())
self.assertTrue(process, PROCESS_IS_VALID)
# Frame #0 should be on self.line1 and the break condition should hold.
from lldbsuite.test.lldbutil import get_stopped_thread
thread = get_stopped_thread(process, lldb.eStopReasonBreakpoint)
self.assertTrue(
thread.IsValid(),
"There should be a thread stopped due to breakpoint condition")
frame0 = thread.GetFrameAtIndex(0)
var = frame0.FindValue('val', lldb.eValueTypeVariableArgument)
self.assertTrue(frame0.GetLineEntry().GetLine() == self.line1 and
var.GetValue() == '3')
# The hit count for the breakpoint should be 1.
self.assertTrue(breakpoint.GetHitCount() == 1)
# Test that the condition expression didn't create a result variable:
options = lldb.SBExpressionOptions()
value = frame0.EvaluateExpression("$0", options)
self.assertTrue(value.GetError().Fail(),
"Conditions should not make result variables.")
process.Continue()
def breakpoint_invalid_conditions_python(self):
"""Use Python APIs to set breakpoint conditions."""
exe = self.getBuildArtifact("a.out")
# Create a target by the debugger.
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
# Now create a breakpoint on main.c by name 'c'.
breakpoint = target.BreakpointCreateByName('c', 'a.out')
#print("breakpoint:", breakpoint)
self.assertTrue(breakpoint and
breakpoint.GetNumLocations() == 1,
VALID_BREAKPOINT)
# Set the condition on the breakpoint.
breakpoint.SetCondition('no_such_variable == not_this_one_either')
self.expect(breakpoint.GetCondition(), exe=False,
startstr='no_such_variable == not_this_one_either')
# Now launch the process, and do not stop at entry point.
process = target.LaunchSimple(
None, None, self.get_process_working_directory())
self.assertTrue(process, PROCESS_IS_VALID)
# Frame #0 should be on self.line1 and the break condition should hold.
from lldbsuite.test.lldbutil import get_stopped_thread
thread = get_stopped_thread(process, lldb.eStopReasonBreakpoint)
self.assertTrue(
thread.IsValid(),
"There should be a thread stopped due to breakpoint condition")
frame0 = thread.GetFrameAtIndex(0)
var = frame0.FindValue('val', lldb.eValueTypeVariableArgument)
self.assertTrue(frame0.GetLineEntry().GetLine() == self.line1)
# The hit count for the breakpoint should be 1.
self.assertTrue(breakpoint.GetHitCount() == 1)
|