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"""Test that thread-local storage can be read correctly."""
from __future__ import print_function
import unittest2
import os, time
import lldb
from lldbsuite.test.lldbtest import *
import lldbsuite.test.lldbutil as lldbutil
class TlsGlobalTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
def setUp(self):
TestBase.setUp(self)
if self.getPlatform() == "freebsd" or self.getPlatform() == "linux":
# LD_LIBRARY_PATH must be set so the shared libraries are found on startup
if "LD_LIBRARY_PATH" in os.environ:
self.runCmd("settings set target.env-vars " + self.dylibPath + "=" + os.environ["LD_LIBRARY_PATH"] + ":" + os.getcwd())
else:
self.runCmd("settings set target.env-vars " + self.dylibPath + "=" + os.getcwd())
self.addTearDownHook(lambda: self.runCmd("settings remove target.env-vars " + self.dylibPath))
@unittest2.expectedFailure("rdar://7796742")
@skipIfWindows # TLS works differently on Windows, this would need to be implemented separately.
def test(self):
"""Test thread-local storage."""
self.build()
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
line1 = line_number('main.c', '// thread breakpoint')
lldbutil.run_break_set_by_file_and_line (self, "main.c", line1, num_expected_locations=1, loc_exact=True)
self.runCmd("run", RUN_SUCCEEDED)
# The stop reason of the thread should be breakpoint.
self.runCmd("process status", "Get process status")
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs = ['stopped',
'stop reason = breakpoint'])
# BUG: sometimes lldb doesn't change threads to the stopped thread.
# (unrelated to this test).
self.runCmd("thread select 2", "Change thread")
# Check that TLS evaluates correctly within the thread.
self.expect("expr var_static", VARIABLES_DISPLAYED_CORRECTLY,
patterns = ["\(int\) \$.* = 88"])
self.expect("expr var_shared", VARIABLES_DISPLAYED_CORRECTLY,
patterns = ["\(int\) \$.* = 66"])
# Continue on the main thread
line2 = line_number('main.c', '// main breakpoint')
lldbutil.run_break_set_by_file_and_line (self, "main.c", line2, num_expected_locations=1, loc_exact=True)
self.runCmd("continue", RUN_SUCCEEDED)
# The stop reason of the thread should be breakpoint.
self.runCmd("process status", "Get process status")
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs = ['stopped',
'stop reason = breakpoint'])
# BUG: sometimes lldb doesn't change threads to the stopped thread.
# (unrelated to this test).
self.runCmd("thread select 1", "Change thread")
# Check that TLS evaluates correctly within the main thread.
self.expect("expr var_static", VARIABLES_DISPLAYED_CORRECTLY,
patterns = ["\(int\) \$.* = 44"])
self.expect("expr var_shared", VARIABLES_DISPLAYED_CORRECTLY,
patterns = ["\(int\) \$.* = 33"])
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