forked from OSchip/llvm-project
81 lines
2.7 KiB
Python
81 lines
2.7 KiB
Python
"""Test that we are able to evaluate expressions when the inferior is blocked in a syscall"""
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import lldb_shared
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import os
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import lldb
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from lldbtest import *
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import lldbutil
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class ExprSyscallTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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@expectedFailureWindows("llvm.org/pr21765") # Also getpid() is not a function on Windows anyway
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def test_setpgid(self):
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self.build()
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self.expr_syscall()
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def expr_syscall(self):
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exe = os.path.join(os.getcwd(), 'a.out')
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# Create a target by the debugger.
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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listener = lldb.SBListener("my listener")
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# launch the inferior and don't wait for it to stop
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self.dbg.SetAsync(True)
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error = lldb.SBError()
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process = target.Launch (listener,
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None, # argv
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None, # envp
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None, # stdin_path
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None, # stdout_path
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None, # stderr_path
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None, # working directory
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0, # launch flags
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False, # Stop at entry
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error) # error
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self.assertTrue(process and process.IsValid(), PROCESS_IS_VALID)
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event = lldb.SBEvent()
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# Give the child enough time to reach the syscall,
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# while clearing out all the pending events.
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# The last WaitForEvent call will time out after 2 seconds.
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while listener.WaitForEvent(2, event):
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pass
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# now the process should be running (blocked in the syscall)
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self.assertEqual(process.GetState(), lldb.eStateRunning, "Process is running")
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# send the process a signal
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process.SendAsyncInterrupt()
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while listener.WaitForEvent(2, event):
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pass
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# as a result the process should stop
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# in all likelihood we have stopped in the middle of the sleep() syscall
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self.assertEqual(process.GetState(), lldb.eStateStopped, PROCESS_STOPPED)
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thread = process.GetSelectedThread()
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# try evaluating a couple of expressions in this state
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self.expect("expr release_flag = 1", substrs = [" = 1"])
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self.expect("print (int)getpid()", substrs = [str(process.GetProcessID())])
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# and run the process to completion
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process.Continue()
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# process all events
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while listener.WaitForEvent(10, event):
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new_state = lldb.SBProcess.GetStateFromEvent(event)
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if new_state == lldb.eStateExited:
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break
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self.assertEqual(process.GetState(), lldb.eStateExited)
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self.assertEqual(process.GetExitStatus(), 0)
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