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https://github.com/Gericom/teak-llvm.git
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19474e1801
This module was originally intended to be imported by top-level scripts to be able to find the LLDB packages and third party libraries. Packages themselves shouldn't need to import it, because by the time it gets into the package, the top-level script should have already done this. Indeed, it was just adding the same values to sys.path multiple times, so this patch is essentially no functional change. To make sure it doesn't get re-introduced, we also delete the `use_lldb_suite` module from `lldbsuite/test`, although the original copy still remains in `lldb/test` llvm-svn: 251963
108 lines
4.1 KiB
Python
108 lines
4.1 KiB
Python
"""Test that we handle inferiors which change their process group"""
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from __future__ import print_function
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import os
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import lldb
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from lldbsuite.test.lldbtest import *
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import lldbsuite.test.lldbutil as lldbutil
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class ChangeProcessGroupTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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def setUp(self):
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# Call super's setUp().
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TestBase.setUp(self)
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# Find the line number to break for main.c.
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self.line = line_number('main.c', '// Set breakpoint here')
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@skipIfFreeBSD # Times out on FreeBSD llvm.org/pr23731
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@skipIfWindows # setpgid call does not exist on Windows
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@expectedFailureAndroid("http://llvm.org/pr23762", api_levels=[16])
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def test_setpgid(self):
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self.build()
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exe = os.path.join(os.getcwd(), 'a.out')
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# Use a file as a synchronization point between test and inferior.
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pid_file_path = lldbutil.append_to_process_working_directory(
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"pid_file_%d" % (int(time.time())))
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self.addTearDownHook(lambda: self.run_platform_command("rm %s" % (pid_file_path)))
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popen = self.spawnSubprocess(exe, [pid_file_path])
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self.addTearDownHook(self.cleanupSubprocesses)
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max_attempts = 5
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for i in range(max_attempts):
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err, retcode, msg = self.run_platform_command("ls %s" % pid_file_path)
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if err.Success() and retcode == 0:
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break
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else:
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print(msg)
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if i < max_attempts:
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# Exponential backoff!
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time.sleep(pow(2, i) * 0.25)
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else:
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self.fail("Child PID file %s not found even after %d attempts." % (pid_file_path, max_attempts))
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err, retcode, pid = self.run_platform_command("cat %s" % (pid_file_path))
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self.assertTrue(err.Success() and retcode == 0,
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"Failed to read file %s: %s, retcode: %d" % (pid_file_path, err.GetCString(), retcode))
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# make sure we cleanup the forked child also
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def cleanupChild():
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if lldb.remote_platform:
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lldb.remote_platform.Kill(int(pid))
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else:
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if os.path.exists("/proc/" + pid):
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os.kill(int(pid), signal.SIGKILL)
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self.addTearDownHook(cleanupChild)
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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.attach.listener")
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error = lldb.SBError()
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process = target.AttachToProcessWithID(listener, int(pid), error)
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self.assertTrue(error.Success() and process, PROCESS_IS_VALID)
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# set a breakpoint just before the setpgid() call
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lldbutil.run_break_set_by_file_and_line(self, 'main.c', self.line, num_expected_locations=-1)
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thread = process.GetSelectedThread()
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# release the child from its loop
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value = thread.GetSelectedFrame().EvaluateExpression("release_child_flag = 1")
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self.assertTrue(value.IsValid() and value.GetValueAsUnsigned(0) == 1);
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process.Continue()
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# make sure the child's process group id is different from its pid
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value = thread.GetSelectedFrame().EvaluateExpression("(int)getpgid(0)")
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self.assertTrue(value.IsValid())
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self.assertNotEqual(value.GetValueAsUnsigned(0), int(pid));
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# step over the setpgid() call
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thread.StepOver()
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self.assertEqual(thread.GetStopReason(), lldb.eStopReasonPlanComplete)
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# verify that the process group has been set correctly
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# this also checks that we are still in full control of the child
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value = thread.GetSelectedFrame().EvaluateExpression("(int)getpgid(0)")
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self.assertTrue(value.IsValid())
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self.assertEqual(value.GetValueAsUnsigned(0), int(pid));
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# run to completion
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process.Continue()
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self.assertEqual(process.GetState(), lldb.eStateExited)
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def run_platform_command(self, cmd):
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platform = self.dbg.GetSelectedPlatform()
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shell_command = lldb.SBPlatformShellCommand(cmd)
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err = platform.Run(shell_command)
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return (err, shell_command.GetStatus(), shell_command.GetOutput())
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