| """ |
| Test that lldb watchpoint works for multiple threads. |
| """ |
| |
| from __future__ import print_function |
| |
| |
| import os |
| import time |
| import re |
| import lldb |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test import lldbutil |
| |
| |
| class WatchpointForMultipleThreadsTestCase(TestBase): |
| |
| mydir = TestBase.compute_mydir(__file__) |
| NO_DEBUG_INFO_TESTCASE = True |
| main_spec = lldb.SBFileSpec("main.cpp", False) |
| |
| @expectedFailureAll( |
| oslist=["windows"], |
| bugnumber="llvm.org/pr24446: WINDOWS XFAIL TRIAGE - Watchpoints not supported on Windows") |
| def test_watchpoint_before_thread_start(self): |
| """Test that we can hit a watchpoint we set before starting another thread""" |
| self.do_watchpoint_test("Before running the thread") |
| |
| @expectedFailureAll( |
| oslist=["windows"], |
| bugnumber="llvm.org/pr24446: WINDOWS XFAIL TRIAGE - Watchpoints not supported on Windows") |
| def test_watchpoint_after_thread_start(self): |
| """Test that we can hit a watchpoint we set after starting another thread""" |
| self.do_watchpoint_test("After running the thread") |
| |
| def do_watchpoint_test(self, line): |
| self.build() |
| lldbutil.run_to_source_breakpoint(self, line, self.main_spec) |
| |
| # Now let's set a write-type watchpoint for variable 'g_val'. |
| self.expect( |
| "watchpoint set variable -w write g_val", |
| WATCHPOINT_CREATED, |
| substrs=[ |
| 'Watchpoint created', |
| 'size = 4', |
| 'type = w']) |
| |
| # 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") |
| |
| self.runCmd("thread list") |
| if "stop reason = watchpoint" in self.res.GetOutput(): |
| # Good, we verified that the watchpoint works! |
| self.runCmd("thread backtrace all") |
| else: |
| self.fail("The stop reason should be either break or watchpoint") |
| |
| # 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']) |
| |
| @expectedFailureAll( |
| oslist=["windows"], |
| bugnumber="llvm.org/pr24446: WINDOWS XFAIL TRIAGE - Watchpoints not supported on Windows") |
| def test_watchpoint_multiple_threads_wp_set_and_then_delete(self): |
| """Test that lldb watchpoint works for multiple threads, and after the watchpoint is deleted, the watchpoint event should no longer fires.""" |
| self.build() |
| self.setTearDownCleanup() |
| |
| lldbutil.run_to_source_breakpoint(self, "After running the thread", self.main_spec) |
| |
| # Now let's set a write-type watchpoint for variable 'g_val'. |
| self.expect( |
| "watchpoint set variable -w write g_val", |
| WATCHPOINT_CREATED, |
| substrs=[ |
| 'Watchpoint created', |
| 'size = 4', |
| 'type = w']) |
| |
| # 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']) |
| |
| watchpoint_stops = 0 |
| while True: |
| self.runCmd("process continue") |
| self.runCmd("process status") |
| if re.search("Process .* exited", self.res.GetOutput()): |
| # Great, we are done with this test! |
| break |
| |
| self.runCmd("thread list") |
| if "stop reason = watchpoint" in self.res.GetOutput(): |
| self.runCmd("thread backtrace all") |
| watchpoint_stops += 1 |
| if watchpoint_stops > 1: |
| self.fail( |
| "Watchpoint hits not supposed to exceed 1 by design!") |
| # Good, we verified that the watchpoint works! Now delete the |
| # watchpoint. |
| if self.TraceOn(): |
| print( |
| "watchpoint_stops=%d at the moment we delete the watchpoint" % |
| watchpoint_stops) |
| self.runCmd("watchpoint delete 1") |
| self.expect("watchpoint list -v", |
| substrs=['No watchpoints currently set.']) |
| continue |
| else: |
| self.fail("The stop reason should be either break or watchpoint") |
