| """ |
| Test that expr will time out and allow other threads to run if it blocks. |
| """ |
| |
| 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 ExprDoesntDeadlockTestCase(TestBase): |
| |
| mydir = TestBase.compute_mydir(__file__) |
| |
| @expectedFailureAll(oslist=['freebsd'], bugnumber='llvm.org/pr17946') |
| @expectedFailureAll( |
| oslist=["windows"], |
| bugnumber="Windows doesn't have pthreads, test needs to be ported") |
| @add_test_categories(["basic_process"]) |
| def test_with_run_command(self): |
| """Test that expr will time out and allow other threads to run if it blocks.""" |
| self.build() |
| exe = self.getBuildArtifact("a.out") |
| |
| # Create a target by the debugger. |
| target = self.dbg.CreateTarget(exe) |
| self.assertTrue(target, VALID_TARGET) |
| |
| # Now create a breakpoint at source line before call_me_to_get_lock |
| # gets called. |
| |
| main_file_spec = lldb.SBFileSpec("locking.c") |
| breakpoint = target.BreakpointCreateBySourceRegex( |
| 'Break here', main_file_spec) |
| if self.TraceOn(): |
| print("breakpoint:", breakpoint) |
| self.assertTrue(breakpoint and |
| breakpoint.GetNumLocations() == 1, |
| VALID_BREAKPOINT) |
| |
| # Now launch the process, and do not stop at entry point. |
| process = target.LaunchSimple( |
| None, None, self.get_process_working_directory()) |
| self.assertTrue(process, PROCESS_IS_VALID) |
| |
| # Frame #0 should be on self.line1 and the break condition should hold. |
| from lldbsuite.test.lldbutil import get_stopped_thread |
| thread = get_stopped_thread(process, lldb.eStopReasonBreakpoint) |
| self.assertTrue( |
| thread.IsValid(), |
| "There should be a thread stopped due to breakpoint condition") |
| |
| frame0 = thread.GetFrameAtIndex(0) |
| |
| var = frame0.EvaluateExpression("call_me_to_get_lock()") |
| self.assertTrue(var.IsValid()) |
| self.assertTrue(var.GetValueAsSigned(0) == 567) |