| """ |
| Test my first lldb watchpoint. |
| """ |
| |
| from __future__ import print_function |
| |
| |
| import os |
| import time |
| import lldb |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test import lldbutil |
| |
| |
| class HelloWatchpointTestCase(TestBase): |
| |
| mydir = TestBase.compute_mydir(__file__) |
| |
| def setUp(self): |
| # Call super's setUp(). |
| TestBase.setUp(self) |
| # Our simple source filename. |
| self.source = 'main.c' |
| # 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.') |
| self.exe_name = self.getBuildArtifact('a.out') |
| self.d = {'C_SOURCES': self.source, 'EXE': self.exe_name} |
| |
| @expectedFailureAll( |
| oslist=["windows"], |
| bugnumber="llvm.org/pr24446: WINDOWS XFAIL TRIAGE - Watchpoints not supported on Windows") |
| @add_test_categories(["basic_process"]) |
| def test_hello_watchpoint_using_watchpoint_set(self): |
| """Test a simple sequence of watchpoint creation and watchpoint hit.""" |
| self.build(dictionary=self.d) |
| self.setTearDownCleanup(dictionary=self.d) |
| |
| exe = self.getBuildArtifact(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'. |
| # There should be only one watchpoint hit (see main.c). |
| self.expect( |
| "watchpoint set variable -w write global", |
| WATCHPOINT_CREATED, |
| substrs=[ |
| 'Watchpoint created', |
| 'size = 4', |
| 'type = w', |
| '%s:%d' % |
| (self.source, |
| self.decl)]) |
| |
| # 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), but |
| # only once. The stop reason of the thread should be watchpoint. |
| self.expect("thread list", STOPPED_DUE_TO_WATCHPOINT, |
| substrs=['stopped', |
| 'stop reason = watchpoint']) |
| |
| self.runCmd("process continue") |
| |
| # Don't expect the read of 'global' to trigger a stop exception. |
| process = self.dbg.GetSelectedTarget().GetProcess() |
| if process.GetState() == lldb.eStateStopped: |
| self.assertFalse( |
| lldbutil.get_stopped_thread( |
| process, lldb.eStopReasonWatchpoint)) |
| |
| # Use the '-v' option to do verbose listing of the watchpoint. |
| # The hit count should now be 1. |
| self.expect("watchpoint list -v", |
| substrs=['hit_count = 1']) |
