def test(self): """Exercise SBValue API linked_list_iter.""" d = {'EXE': self.exe_name} self.build(dictionary=d) self.setTearDownCleanup(dictionary=d) exe = self.getBuildArtifact(self.exe_name) # Create a target by the debugger. target = self.dbg.CreateTarget(exe) self.assertTrue(target, VALID_TARGET) # Create the breakpoint inside function 'main'. breakpoint = target.BreakpointCreateByLocation('main.cpp', self.line) self.assertTrue(breakpoint, VALID_BREAKPOINT) # 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) # Get Frame #0. self.assertTrue(process.GetState() == lldb.eStateStopped) thread = lldbutil.get_stopped_thread( process, lldb.eStopReasonBreakpoint) self.assertTrue( thread.IsValid(), "There should be a thread stopped due to breakpoint condition") frame0 = thread.GetFrameAtIndex(0) # Get variable 'task_head'. task_head = frame0.FindVariable('task_head') self.assertTrue(task_head, VALID_VARIABLE) self.DebugSBValue(task_head) # By design (see main.cpp), the visited id's are: [1, 2, 4, 5]. visitedIDs = [1, 2, 4, 5] list = [] cvf = lldbutil.ChildVisitingFormatter(indent_child=2) for t in task_head.linked_list_iter('next'): self.assertTrue(t, VALID_VARIABLE) # Make sure that 'next' corresponds to an SBValue with pointer # type. self.assertTrue(t.TypeIsPointerType()) if self.TraceOn(): print(cvf.format(t)) list.append(int(t.GetChildMemberWithName("id").GetValue())) # Sanity checks that the we visited all the items (no more, no less). if self.TraceOn(): print("visited IDs:", list) self.assertTrue(visitedIDs == list) # Let's exercise the linked_list_iter() API again, this time supplying # our end of list test function. def eol(val): """Test function to determine end of list.""" # End of list is reached if either the value object is invalid # or it corresponds to a null pointer. if not val or int(val.GetValue(), 16) == 0: return True # Also check the "id" for correct semantics. If id <= 0, the item # is corrupted, let's return True to signify end of list. if int(val.GetChildMemberWithName("id").GetValue(), 0) <= 0: return True # Otherwise, return False. return False list = [] for t in task_head.linked_list_iter('next', eol): self.assertTrue(t, VALID_VARIABLE) # Make sure that 'next' corresponds to an SBValue with pointer # type. self.assertTrue(t.TypeIsPointerType()) if self.TraceOn(): print(cvf.format(t)) list.append(int(t.GetChildMemberWithName("id").GetValue())) # Sanity checks that the we visited all the items (no more, no less). if self.TraceOn(): print("visited IDs:", list) self.assertTrue(visitedIDs == list) # Get variable 'empty_task_head'. empty_task_head = frame0.FindVariable('empty_task_head') self.assertTrue(empty_task_head, VALID_VARIABLE) self.DebugSBValue(empty_task_head) list = [] # There is no iterable item from empty_task_head.linked_list_iter(). for t in empty_task_head.linked_list_iter('next', eol): if self.TraceOn(): print(cvf.format(t)) list.append(int(t.GetChildMemberWithName("id").GetValue())) self.assertTrue(len(list) == 0) # Get variable 'task_evil'. task_evil = frame0.FindVariable('task_evil') self.assertTrue(task_evil, VALID_VARIABLE) self.DebugSBValue(task_evil) list = [] # There 3 iterable items from task_evil.linked_list_iter(). :-) for t in task_evil.linked_list_iter('next'): if self.TraceOn(): print(cvf.format(t)) list.append(int(t.GetChildMemberWithName("id").GetValue())) self.assertTrue(len(list) == 3)
def test(self): """Exercise some SBValue APIs.""" d = {'EXE': self.exe_name} self.build(dictionary=d) self.setTearDownCleanup(dictionary=d) exe = self.getBuildArtifact(self.exe_name) # Create a target by the debugger. target = self.dbg.CreateTarget(exe) self.assertTrue(target, VALID_TARGET) # Create the breakpoint inside function 'main'. breakpoint = target.BreakpointCreateByLocation('main.c', self.line) self.assertTrue(breakpoint, VALID_BREAKPOINT) # 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) # Get Frame #0. self.assertTrue(process.GetState() == lldb.eStateStopped) thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint) self.assertTrue( thread.IsValid(), "There should be a thread stopped due to breakpoint condition") frame0 = thread.GetFrameAtIndex(0) # Get global variable 'days_of_week'. list = target.FindGlobalVariables('days_of_week', 1) days_of_week = list.GetValueAtIndex(0) self.assertTrue(days_of_week, VALID_VARIABLE) self.assertEqual(days_of_week.GetNumChildren(), 7, VALID_VARIABLE) self.DebugSBValue(days_of_week) # Use this to test the "child" and "children" accessors: children = days_of_week.children self.assertEqual(len(children), 7, VALID_VARIABLE) for i in range(0, len(children)): day = days_of_week.child[i] list_day = children[i] self.assertNotEqual(day, None) self.assertNotEqual(list_day, None) self.assertEqual(day.GetSummary(), list_day.GetSummary(), VALID_VARIABLE) # Spot check the actual value: first_day = days_of_week.child[1] self.assertEqual(first_day.GetSummary(), '"Monday"', VALID_VARIABLE) # Get global variable 'weekdays'. list = target.FindGlobalVariables('weekdays', 1) weekdays = list.GetValueAtIndex(0) self.assertTrue(weekdays, VALID_VARIABLE) self.assertTrue(weekdays.GetNumChildren() == 5, VALID_VARIABLE) self.DebugSBValue(weekdays) # Get global variable 'g_table'. list = target.FindGlobalVariables('g_table', 1) g_table = list.GetValueAtIndex(0) self.assertTrue(g_table, VALID_VARIABLE) self.assertTrue(g_table.GetNumChildren() == 2, VALID_VARIABLE) self.DebugSBValue(g_table) fmt = lldbutil.BasicFormatter() cvf = lldbutil.ChildVisitingFormatter(indent_child=2) rdf = lldbutil.RecursiveDecentFormatter(indent_child=2) if self.TraceOn(): print(fmt.format(days_of_week)) print(cvf.format(days_of_week)) print(cvf.format(weekdays)) print(rdf.format(g_table)) # Get variable 'my_int_ptr'. value = frame0.FindVariable('my_int_ptr') self.assertTrue(value, VALID_VARIABLE) self.DebugSBValue(value) # Get what 'my_int_ptr' points to. pointed = value.GetChildAtIndex(0) self.assertTrue(pointed, VALID_VARIABLE) self.DebugSBValue(pointed) # While we are at it, verify that 'my_int_ptr' points to 'g_my_int'. symbol = target.ResolveLoadAddress(int(pointed.GetLocation(), 0)).GetSymbol() self.assertTrue(symbol) self.expect(symbol.GetName(), exe=False, startstr='g_my_int') # Get variable 'str_ptr'. value = frame0.FindVariable('str_ptr') self.assertTrue(value, VALID_VARIABLE) self.DebugSBValue(value) # SBValue::TypeIsPointerType() should return true. self.assertTrue(value.TypeIsPointerType()) # Verify the SBValue::GetByteSize() API is working correctly. arch = self.getArchitecture() if arch == 'i386': self.assertTrue(value.GetByteSize() == 4) elif arch == 'x86_64': self.assertTrue(value.GetByteSize() == 8) # Get child at index 5 => 'Friday'. child = value.GetChildAtIndex(5, lldb.eNoDynamicValues, True) self.assertTrue(child, VALID_VARIABLE) self.DebugSBValue(child) self.expect(child.GetSummary(), exe=False, substrs=['Friday']) # Now try to get at the same variable using GetValueForExpressionPath(). # These two SBValue objects should have the same value. val2 = value.GetValueForExpressionPath('[5]') self.assertTrue(val2, VALID_VARIABLE) self.DebugSBValue(val2) self.assertTrue(child.GetValue() == val2.GetValue() and child.GetSummary() == val2.GetSummary()) val_i = target.EvaluateExpression('i') val_s = target.EvaluateExpression('s') val_a = target.EvaluateExpression('a') self.assertTrue( val_s.GetChildMemberWithName('a').GetAddress().IsValid(), VALID_VARIABLE) self.assertTrue( val_s.GetChildMemberWithName('a').AddressOf(), VALID_VARIABLE) self.assertTrue( val_a.Cast(val_i.GetType()).AddressOf(), VALID_VARIABLE) self.assertTrue( int(lldb.value(frame0.FindVariable('uinthex'))) == 3768803088, 'uinthex == 3768803088') self.assertTrue( int(lldb.value(frame0.FindVariable('sinthex'))) == -526164208, 'sinthex == -526164208') self.assertTrue( frame0.FindVariable('uinthex').GetValueAsUnsigned() == 3768803088, 'unsigned uinthex == 3768803088') self.assertTrue( frame0.FindVariable('sinthex').GetValueAsUnsigned() == 3768803088, 'unsigned sinthex == 3768803088') self.assertTrue( frame0.FindVariable('uinthex').GetValueAsSigned() == -526164208, 'signed uinthex == -526164208') self.assertTrue( frame0.FindVariable('sinthex').GetValueAsSigned() == -526164208, 'signed sinthex == -526164208')