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
|
"""
Test 'watchpoint command'.
"""
from __future__ import print_function
import os, time
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class WatchpointLLDBCommandTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Our simple source filename.
self.source = 'main.cpp'
# Find the line number to break inside main().
self.line = line_number(self.source, '// Set break point at this line.')
# And the watchpoint variable declaration line number.
self.decl = line_number(self.source, '// Watchpoint variable declaration.')
# Build dictionary to have unique executable names for each test method.
self.exe_name = 'a%d.out' % self.test_number
self.d = {'CXX_SOURCES': self.source, 'EXE': self.exe_name}
@expectedFailureAndroid(archs=['arm', 'aarch64']) # Watchpoints not supported
@expectedFailureAll(oslist=["linux"], archs=["aarch64"], bugnumber="llvm.org/pr27710")
@expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24446: WINDOWS XFAIL TRIAGE - Watchpoints not supported on Windows")
def test_watchpoint_command(self):
"""Test 'watchpoint command'."""
self.build(dictionary=self.d)
self.setTearDownCleanup(dictionary=self.d)
exe = os.path.join(os.getcwd(), self.exe_name)
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Add a breakpoint to set a watchpoint when stopped on the breakpoint.
lldbutil.run_break_set_by_file_and_line (self, None, self.line, num_expected_locations=1)
# Run the program.
self.runCmd("run", RUN_SUCCEEDED)
# We should be stopped again due to the breakpoint.
# The stop reason of the thread should be breakpoint.
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs = ['stopped',
'stop reason = breakpoint'])
# Now let's set a write-type watchpoint for 'global'.
self.expect("watchpoint set variable -w write global", WATCHPOINT_CREATED,
substrs = ['Watchpoint created', 'size = 4', 'type = w',
'%s:%d' % (self.source, self.decl)])
self.runCmd('watchpoint command add 1 -o "expr -- cookie = 777"')
# List the watchpoint command we just added.
self.expect("watchpoint command list 1",
substrs = ['expr -- cookie = 777'])
# Use the '-v' option to do verbose listing of the watchpoint.
# The hit count should be 0 initially.
self.expect("watchpoint list -v",
substrs = ['hit_count = 0'])
self.runCmd("process continue")
# We should be stopped again due to the watchpoint (write type).
# The stop reason of the thread should be watchpoint.
self.expect("thread backtrace", STOPPED_DUE_TO_WATCHPOINT,
substrs = ['stop reason = watchpoint'])
# Check that the watchpoint snapshoting mechanism is working.
self.expect("watchpoint list -v",
substrs = ['old value:', ' = 0',
'new value:', ' = 1'])
# The watchpoint command "forced" our global variable 'cookie' to become 777.
self.expect("frame variable --show-globals cookie",
substrs = ['(int32_t)', 'cookie = 777'])
@expectedFailureAndroid(archs=['arm', 'aarch64']) # Watchpoints not supported
@expectedFailureAll(oslist=["linux"], archs=["aarch64"], bugnumber="llvm.org/pr27710")
@expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24446: WINDOWS XFAIL TRIAGE - Watchpoints not supported on Windows")
def test_watchpoint_command_can_disable_a_watchpoint(self):
"""Test that 'watchpoint command' action can disable a watchpoint after it is triggered."""
self.build(dictionary=self.d)
self.setTearDownCleanup(dictionary=self.d)
exe = os.path.join(os.getcwd(), self.exe_name)
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Add a breakpoint to set a watchpoint when stopped on the breakpoint.
lldbutil.run_break_set_by_file_and_line (self, None, self.line, num_expected_locations=1)
# Run the program.
self.runCmd("run", RUN_SUCCEEDED)
# We should be stopped again due to the breakpoint.
# The stop reason of the thread should be breakpoint.
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs = ['stopped',
'stop reason = breakpoint'])
# Now let's set a write-type watchpoint for 'global'.
self.expect("watchpoint set variable -w write global", WATCHPOINT_CREATED,
substrs = ['Watchpoint created', 'size = 4', 'type = w',
'%s:%d' % (self.source, self.decl)])
self.runCmd('watchpoint command add 1 -o "watchpoint disable 1"')
# List the watchpoint command we just added.
self.expect("watchpoint command list 1",
substrs = ['watchpoint disable 1'])
# Use the '-v' option to do verbose listing of the watchpoint.
# The hit count should be 0 initially.
self.expect("watchpoint list -v",
substrs = ['hit_count = 0'])
self.runCmd("process continue")
# We should be stopped again due to the watchpoint (write type).
# The stop reason of the thread should be watchpoint.
self.expect("thread backtrace", STOPPED_DUE_TO_WATCHPOINT,
substrs = ['stop reason = watchpoint'])
# Check that the watchpoint has been disabled.
self.expect("watchpoint list -v",
substrs = ['disabled'])
self.runCmd("process continue")
# There should be no more watchpoint hit and the process status should
# be 'exited'.
self.expect("process status",
substrs = ['exited'])
|
