| """ |
| Test lldb exception breakpoint command for CPP. |
| """ |
| |
| import os, time |
| import unittest2 |
| import lldb |
| import lldbutil |
| from lldbtest import * |
| |
| class CPPBreakpointTestCase(TestBase): |
| |
| mydir = os.path.join("lang", "cpp", "exceptions") |
| |
| @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin") |
| @dsym_test |
| def test_with_dsym(self): |
| """Test lldb exception breakpoint command for CPP.""" |
| self.buildDsym() |
| self.cpp_exceptions() |
| |
| @dwarf_test |
| def test_with_dwarf(self): |
| """Test lldb exception breakpoint command for CPP.""" |
| self.buildDwarf() |
| self.cpp_exceptions() |
| |
| def setUp(self): |
| # Call super's setUp(). |
| TestBase.setUp(self) |
| self.source = 'exceptions.cpp' |
| self.catch_line = line_number(self.source, '// This is the line you should stop at for catch') |
| |
| def cpp_exceptions (self): |
| """Test lldb exception breakpoint command for CPP.""" |
| exe = os.path.join(os.getcwd(), "a.out") |
| |
| # Create a target from the debugger. |
| |
| target = self.dbg.CreateTarget (exe) |
| self.assertTrue(target, VALID_TARGET) |
| |
| exception_bkpt = target.BreakpointCreateForException (lldb.eLanguageTypeC_plus_plus, True, True) |
| self.assertTrue (exception_bkpt, "Made an exception breakpoint") |
| |
| # Now run, and make sure we hit our breakpoint: |
| process = target.LaunchSimple (None, None, os.getcwd()) |
| self.assertTrue (process, "Got a valid process") |
| |
| stopped_threads = [] |
| stopped_threads = lldbutil.get_threads_stopped_at_breakpoint (process, exception_bkpt) |
| self.assertTrue (len(stopped_threads) == 1, "Stopped at our exception breakpoint.") |
| thread = stopped_threads[0] |
| # Make sure our throw function is still above us on the stack: |
| |
| frame_functions = lldbutil.get_function_names(thread) |
| self.assertTrue (frame_functions.count ("throws_exception_on_even(int)") == 1, "Our throw function is still on the stack.") |
| |
| # Okay we hit our exception throw breakpoint, now make sure we get our catch breakpoint. |
| # One potential complication is that we might hit a couple of the exception breakpoints in getting out of the throw. |
| # so loop till we don't see the throws function on the stack. We should stop one more time for our exception breakpoint |
| # and that should be the catch... |
| |
| while frame_functions.count ("throws_exception_on_even(int)") == 1: |
| stopped_threads = lldbutil.continue_to_breakpoint (process, exception_bkpt) |
| self.assertTrue (len(stopped_threads) == 1) |
| |
| thread = stopped_threads[0] |
| frame_functions = lldbutil.get_function_names(thread) |
| |
| self.assertTrue (frame_functions.count ("throws_exception_on_even(int)") == 0, "At catch our throw function is off the stack") |
| self.assertTrue (frame_functions.count ("intervening_function(int)") == 0, "At catch our intervening function is off the stack") |
| self.assertTrue (frame_functions.count ("catches_exception(int)") == 1, "At catch our catch function is on the stack") |
| |
| |
| |
| if __name__ == '__main__': |
| import atexit |
| lldb.SBDebugger.Initialize() |
| atexit.register(lambda: lldb.SBDebugger.Terminate()) |
| unittest2.main() |
