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"""Test that thread-local storage can be read correctly."""
import os, time
import unittest2
import lldb
from lldbtest import *
import lldbutil
class TlsGlobalTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
@skipUnlessDarwin
@dsym_test
@unittest2.expectedFailure("rdar://7796742")
def test_with_dsym(self):
"""Test thread-local storage."""
self.buildDsym()
self.tls_globals()
@dwarf_test
@unittest2.expectedFailure("rdar://7796742")
def test_with_dwarf(self):
"""Test thread-local storage."""
self.buildDwarf()
self.tls_globals()
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))
def tls_globals(self):
"""Test thread-local storage."""
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_FAILED)
# 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_FAILED)
# 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"])
if __name__ == '__main__':
import atexit
lldb.SBDebugger.Initialize()
atexit.register(lambda: lldb.SBDebugger.Terminate())
unittest2.main()
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