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"""Test that thread-local storage can be read correctly."""
import os
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class TlsGlobalTestCase(TestBase):
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"]
+ ":"
+ self.getBuildDir()
)
else:
self.runCmd(
"settings set target.env-vars "
+ self.dylibPath
+ "="
+ self.getBuildDir()
)
self.addTearDownHook(
lambda: self.runCmd("settings remove target.env-vars " + self.dylibPath)
)
# TLS works differently on Windows, this would need to be implemented
# separately.
@skipIfWindows
@expectedFailureAll(
bugnumber="llvm.org/pr28392",
oslist=no_match(lldbplatformutil.getDarwinOSTriples()),
)
@expectedFailureIfFn(lldbplatformutil.xcode15LinkerBug)
def test(self):
"""Test thread-local storage."""
self.build()
exe = self.getBuildArtifact("a.out")
target = self.dbg.CreateTarget(exe)
if self.platformIsDarwin():
self.registerSharedLibrariesWithTarget(target, ["liba.dylib"])
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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