| """ |
| Test that lldb stop-hook works for multiple threads. |
| """ |
| |
| 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 configuration |
| from lldbsuite.test import lldbutil |
| |
| |
| class StopHookForMultipleThreadsTestCase(TestBase): |
| |
| mydir = TestBase.compute_mydir(__file__) |
| |
| 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, and add a stop-hook.') |
| self.thread_function = line_number( |
| self.source, |
| '// Break here to test that the stop-hook mechanism works for multiple threads.') |
| # 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} |
| |
| @expectedFlakeyFreeBSD("llvm.org/pr15037") |
| # stop hooks sometimes fail to fire on Linux |
| @expectedFlakeyLinux("llvm.org/pr15037") |
| @expectedFailureAll( |
| hostoslist=["windows"], |
| bugnumber="llvm.org/pr22274: need a pexpect replacement for windows") |
| def test_stop_hook_multiple_threads(self): |
| """Test that lldb stop-hook works for multiple threads.""" |
| self.build(dictionary=self.d) |
| self.setTearDownCleanup(dictionary=self.d) |
| |
| import pexpect |
| exe = self.getBuildArtifact(self.exe_name) |
| prompt = "(lldb) " |
| |
| # So that the child gets torn down after the test. |
| self.child = pexpect.spawn('%s %s' % |
| (lldbtest_config.lldbExec, self.lldbOption)) |
| child = self.child |
| # Turn on logging for what the child sends back. |
| if self.TraceOn(): |
| child.logfile_read = sys.stdout |
| |
| if lldb.remote_platform: |
| child.expect_exact(prompt) |
| child.sendline( |
| 'platform select %s' % |
| lldb.remote_platform.GetName()) |
| child.expect_exact(prompt) |
| child.sendline( |
| 'platform connect %s' % |
| configuration.lldb_platform_url) |
| child.expect_exact(prompt) |
| child.sendline( |
| 'platform settings -w %s' % |
| configuration.lldb_platform_working_dir) |
| |
| child.expect_exact(prompt) |
| child.sendline('target create %s' % exe) |
| |
| # Set the breakpoint, followed by the target stop-hook commands. |
| child.expect_exact(prompt) |
| child.sendline('breakpoint set -f main.cpp -l %d' % self.first_stop) |
| child.expect_exact(prompt) |
| child.sendline( |
| 'breakpoint set -f main.cpp -l %d' % |
| self.thread_function) |
| child.expect_exact(prompt) |
| |
| # Now run the program, expect to stop at the first breakpoint which is |
| # within the stop-hook range. |
| child.sendline('run') |
| # 'Process 2415 launched', 'Process 2415 stopped' |
| child.expect_exact("Process") |
| child.expect_exact(prompt) |
| child.sendline( |
| 'target stop-hook add -o "frame variable --show-globals g_val"') |
| child.expect_exact("Stop hook") # 'Stop hook #1 added.' |
| child.expect_exact(prompt) |
| |
| # Continue and expect to find the output emitted by the firing of our |
| # stop hook. |
| child.sendline('continue') |
| child.expect_exact('(uint32_t) ::g_val = ') |