165 lines · python
1"""2Test 'watchpoint command'.3"""4 5 6import lldb7from lldbsuite.test.decorators import *8from lldbsuite.test.lldbtest import *9from lldbsuite.test import lldbutil10 11 12class WatchpointLLDBCommandTestCase(TestBase):13 NO_DEBUG_INFO_TESTCASE = True14 15 def setUp(self):16 # Call super's setUp().17 TestBase.setUp(self)18 # Our simple source filename.19 self.source = "main.cpp"20 # Find the line number to break inside main().21 self.line = line_number(self.source, "// Set break point at this line.")22 # And the watchpoint variable declaration line number.23 self.decl = line_number(self.source, "// Watchpoint variable declaration.")24 # Build dictionary to have unique executable names for each test25 # method.26 self.exe_name = "a%d.out" % self.test_number27 self.d = {"CXX_SOURCES": self.source, "EXE": self.exe_name}28 29 def test_watchpoint_command(self):30 """Test 'watchpoint command'."""31 self.build(dictionary=self.d)32 self.setTearDownCleanup(dictionary=self.d)33 34 exe = self.getBuildArtifact(self.exe_name)35 self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)36 37 # Add a breakpoint to set a watchpoint when stopped on the breakpoint.38 lldbutil.run_break_set_by_file_and_line(39 self, None, self.line, num_expected_locations=140 )41 42 # Run the program.43 self.runCmd("run", RUN_SUCCEEDED)44 45 # We should be stopped again due to the breakpoint.46 # The stop reason of the thread should be breakpoint.47 self.expect(48 "thread list",49 STOPPED_DUE_TO_BREAKPOINT,50 substrs=["stopped", "stop reason = breakpoint"],51 )52 53 # Now let's set a write-type watchpoint for 'global'.54 self.expect(55 "watchpoint set variable -w write global",56 WATCHPOINT_CREATED,57 substrs=[58 "Watchpoint created",59 "size = 4",60 "type = w",61 "%s:%d" % (self.source, self.decl),62 ],63 )64 65 self.runCmd('watchpoint command add 1 -o "expr -- cookie = 777"')66 67 # List the watchpoint command we just added.68 self.expect("watchpoint command list 1", substrs=["expr -- cookie = 777"])69 70 # Use the '-v' option to do verbose listing of the watchpoint.71 # The hit count should be 0 initially.72 self.expect("watchpoint list -v", substrs=["hit_count = 0"])73 74 self.runCmd("process continue")75 76 # We should be stopped again due to the watchpoint (write type).77 # The stop reason of the thread should be watchpoint.78 self.expect(79 "thread backtrace",80 STOPPED_DUE_TO_WATCHPOINT,81 substrs=["stop reason = watchpoint"],82 )83 84 # Check that the watchpoint snapshoting mechanism is working.85 self.expect(86 "watchpoint list -v",87 substrs=[88 "old value: 0",89 "new value: 1",90 "hit_count = 1",91 "ignore_count = 0",92 ],93 )94 95 # The watchpoint command "forced" our global variable 'cookie' to96 # become 777.97 self.expect(98 "frame variable --show-globals cookie",99 substrs=["(int32_t)", "cookie = 777"],100 )101 102 def test_watchpoint_command_can_disable_a_watchpoint(self):103 """Test that 'watchpoint command' action can disable a watchpoint after it is triggered."""104 self.build(dictionary=self.d)105 self.setTearDownCleanup(dictionary=self.d)106 107 exe = self.getBuildArtifact(self.exe_name)108 self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)109 110 # Add a breakpoint to set a watchpoint when stopped on the breakpoint.111 lldbutil.run_break_set_by_file_and_line(112 self, None, self.line, num_expected_locations=1113 )114 115 # Run the program.116 self.runCmd("run", RUN_SUCCEEDED)117 118 # We should be stopped again due to the breakpoint.119 # The stop reason of the thread should be breakpoint.120 self.expect(121 "thread list",122 STOPPED_DUE_TO_BREAKPOINT,123 substrs=["stopped", "stop reason = breakpoint"],124 )125 126 # Now let's set a write-type watchpoint for 'global'.127 self.expect(128 "watchpoint set variable -w write global",129 WATCHPOINT_CREATED,130 substrs=[131 "Watchpoint created",132 "size = 4",133 "type = w",134 "%s:%d" % (self.source, self.decl),135 ],136 )137 138 self.runCmd('watchpoint command add 1 -o "watchpoint disable 1"')139 140 # List the watchpoint command we just added.141 self.expect("watchpoint command list 1", substrs=["watchpoint disable 1"])142 143 # Use the '-v' option to do verbose listing of the watchpoint.144 # The hit count should be 0 initially.145 self.expect("watchpoint list -v", substrs=["hit_count = 0"])146 147 self.runCmd("process continue")148 149 # We should be stopped again due to the watchpoint (write type).150 # The stop reason of the thread should be watchpoint.151 self.expect(152 "thread backtrace",153 STOPPED_DUE_TO_WATCHPOINT,154 substrs=["stop reason = watchpoint"],155 )156 157 # Check that the watchpoint has been disabled.158 self.expect("watchpoint list -v", substrs=["disabled"])159 160 self.runCmd("process continue")161 162 # There should be no more watchpoint hit and the process status should163 # be 'exited'.164 self.expect("process status", substrs=["exited"])165