| """ |
| Test that lldb watchpoint works for multiple threads. |
| """ |
| |
| import os, time |
| import unittest2 |
| import re |
| import lldb |
| from lldbtest import * |
| import lldbutil |
| |
| class WatchpointForMultipleThreadsTestCase(TestBase): |
| |
| mydir = TestBase.compute_mydir(__file__) |
| |
| @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin") |
| @dsym_test |
| def test_watchpoint_multiple_threads_with_dsym(self): |
| """Test that lldb watchpoint works for multiple threads.""" |
| self.buildDsym(dictionary=self.d) |
| self.setTearDownCleanup(dictionary=self.d) |
| self.hello_multiple_threads() |
| |
| @skipIfGcc # causes intermittent gcc debian buildbot failures, skip until we can investigate |
| @expectedFailureLinux("llvm.org/pr20233") # note due to a @skipIfGcc above, this is going to check failure on Linux if using non-GCC (most likely clang) |
| @dwarf_test |
| def test_watchpoint_multiple_threads_with_dwarf(self): |
| """Test that lldb watchpoint works for multiple threads.""" |
| self.buildDwarf(dictionary=self.d) |
| self.setTearDownCleanup(dictionary=self.d) |
| self.hello_multiple_threads() |
| |
| @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin") |
| @dsym_test |
| def test_watchpoint_multiple_threads_wp_set_and_then_delete_with_dsym(self): |
| """Test that lldb watchpoint works for multiple threads, and after the watchpoint is deleted, the watchpoint event should no longer fires.""" |
| self.buildDsym(dictionary=self.d) |
| self.setTearDownCleanup(dictionary=self.d) |
| self.hello_multiple_threads_wp_set_and_then_delete() |
| |
| @skipIfGcc # causes intermittent gcc debian buildbot failures, skip until we can investigate |
| @dwarf_test |
| def test_watchpoint_multiple_threads_wp_set_and_then_delete_with_dwarf(self): |
| """Test that lldb watchpoint works for multiple threads, and after the watchpoint is deleted, the watchpoint event should no longer fires.""" |
| self.buildDwarf(dictionary=self.d) |
| self.setTearDownCleanup(dictionary=self.d) |
| self.hello_multiple_threads_wp_set_and_then_delete() |
| |
| def setUp(self): |
| # Call super's setUp(). |
| TestBase.setUp(self) |
| # Our simple source filename. |
| self.source = 'main.cpp' |
| # Find the line number to break inside main(). |
| self.first_stop = line_number(self.source, '// Set break point at this line') |
| # Build dictionary to have unique executable names for each test method. |
| self.exe_name = self.testMethodName |
| self.d = {'CXX_SOURCES': self.source, 'EXE': self.exe_name} |
| |
| def hello_multiple_threads(self): |
| """Test that lldb watchpoint works for multiple threads.""" |
| exe = os.path.join(os.getcwd(), 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.first_stop, 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 variable 'g_val'. |
| # The main.cpp, by design, misbehaves by not following the agreed upon |
| # protocol of using a mutex while accessing the global pool and by not |
| # writing to the variable. |
| 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']) |
| |
| while True: |
| 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") |
| break |
| 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']) |
| |
| def hello_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.""" |
| exe = os.path.join(os.getcwd(), 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.first_stop, 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 variable 'g_val'. |
| # The main.cpp, by design, misbehaves by not following the agreed upon |
| # protocol of using a mutex while accessing the global pool and by not |
| # writing to the variable. |
| 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") |
| |
| |
| if __name__ == '__main__': |
| import atexit |
| lldb.SBDebugger.Initialize() |
| atexit.register(lambda: lldb.SBDebugger.Terminate()) |
| unittest2.main() |
