packages/Python/lldbsuite/test/functionalities/avoids-fd-leak/TestFdLeak.py

   1 """
   2 Test whether a process started by lldb has no extra file descriptors open.
   3 """
   4
   5 from __future__ import print_function
   6
   7
   8 import os
   9 import lldb
  10 from lldbsuite.test import lldbutil
  11 from lldbsuite.test.lldbtest import *
  12 from lldbsuite.test.decorators import *
  13
  14
  15 def python_leaky_fd_version(test):
  16     import sys
  17     # Python random module leaks file descriptors on some versions.
  18     if sys.version_info >= (2, 7, 8) and sys.version_info < (2, 7, 10):
  19         return "Python random module leaks file descriptors in this python version"
  20     return None
  21
  22
  23 class AvoidsFdLeakTestCase(TestBase):
  24
  25     NO_DEBUG_INFO_TESTCASE = True
  26
  27     mydir = TestBase.compute_mydir(__file__)
  28
  29     @expectedFailure(python_leaky_fd_version, "bugs.freebsd.org/197376")
  30     @expectedFailureAll(
  31         oslist=['freebsd'],
  32         bugnumber="llvm.org/pr25624 still failing with Python 2.7.10")
  33     # The check for descriptor leakage needs to be implemented differently
  34     # here.
  35     @skipIfWindows
  36     @skipIfTargetAndroid()  # Android have some other file descriptors open by the shell
  37     def test_fd_leak_basic(self):
  38         self.do_test([])
  39
  40     @expectedFailure(python_leaky_fd_version, "bugs.freebsd.org/197376")
  41     @expectedFailureAll(
  42         oslist=['freebsd'],
  43         bugnumber="llvm.org/pr25624 still failing with Python 2.7.10")
  44     # The check for descriptor leakage needs to be implemented differently
  45     # here.
  46     @skipIfWindows
  47     @skipIfTargetAndroid()  # Android have some other file descriptors open by the shell
  48     def test_fd_leak_log(self):
  49         self.do_test(["log enable -f '/dev/null' lldb commands"])
  50
  51     def do_test(self, commands):
  52         self.build()
  53         exe = os.path.join(os.getcwd(), "a.out")
  54
  55         for c in commands:
  56             self.runCmd(c)
  57
  58         target = self.dbg.CreateTarget(exe)
  59
  60         process = target.LaunchSimple(
  61             None, None, self.get_process_working_directory())
  62         self.assertTrue(process, PROCESS_IS_VALID)
  63
  64         self.assertTrue(
  65             process.GetState() == lldb.eStateExited,
  66             "Process should have exited.")
  67         self.assertTrue(
  68             process.GetExitStatus() == 0,
  69             "Process returned non-zero status. Were incorrect file descriptors passed?")
  70
  71     @expectedFailure(python_leaky_fd_version, "bugs.freebsd.org/197376")
  72     @expectedFailureAll(
  73         oslist=['freebsd'],
  74         bugnumber="llvm.org/pr25624 still failing with Python 2.7.10")
  75     # The check for descriptor leakage needs to be implemented differently
  76     # here.
  77     @skipIfWindows
  78     @skipIfTargetAndroid()  # Android have some other file descriptors open by the shell
  79     def test_fd_leak_multitarget(self):
  80         self.build()
  81         exe = os.path.join(os.getcwd(), "a.out")
  82
  83         target = self.dbg.CreateTarget(exe)
  84         breakpoint = target.BreakpointCreateBySourceRegex(
  85             'Set breakpoint here', lldb.SBFileSpec("main.c", False))
  86         self.assertTrue(breakpoint, VALID_BREAKPOINT)
  87
  88         process1 = target.LaunchSimple(
  89             None, None, self.get_process_working_directory())
  90         self.assertTrue(process1, PROCESS_IS_VALID)
  91         self.assertTrue(
  92             process1.GetState() == lldb.eStateStopped,
  93             "Process should have been stopped.")
  94
  95         target2 = self.dbg.CreateTarget(exe)
  96         process2 = target2.LaunchSimple(
  97             None, None, self.get_process_working_directory())
  98         self.assertTrue(process2, PROCESS_IS_VALID)
  99
 100         self.assertTrue(
 101             process2.GetState() == lldb.eStateExited,
 102             "Process should have exited.")
 103         self.assertTrue(
 104             process2.GetExitStatus() == 0,
 105             "Process returned non-zero status. Were incorrect file descriptors passed?")