5 def get_required_attr(config, attr_name):
6 attr_value = getattr(config, attr_name, None)
9 "No attribute %r in test configuration! You may need to run "
10 "tests from your build directory or add this attribute "
11 "to lit.site.cfg " % attr_name)
15 config.name = 'ThreadSanitizer'
18 config.test_source_root = os.path.dirname(__file__)
20 # Setup environment variables for running ThreadSanitizer.
21 default_tsan_opts = "atexit_sleep_ms=0"
23 if config.host_os == 'Darwin':
24 # On Darwin, we default to `abort_on_error=1`, which would make tests run
25 # much slower. Let's override this and run lit tests with 'abort_on_error=0'.
26 default_tsan_opts += ':abort_on_error=0'
28 # Platform-specific default TSAN_OPTIONS for lit tests.
30 config.environment['TSAN_OPTIONS'] = default_tsan_opts
31 default_tsan_opts += ':'
32 config.substitutions.append(('%env_tsan_opts=',
33 'env TSAN_OPTIONS=' + default_tsan_opts))
35 # GCC driver doesn't add necessary compile/link flags with -fsanitize=thread.
36 if config.compiler_id == 'GNU':
37 extra_cflags = ["-fPIE", "-pthread", "-ldl", "-lstdc++", "-lrt", "-pie"]
41 # Setup default compiler flags used with -fsanitize=thread option.
42 clang_tsan_cflags = ["-fsanitize=thread",
44 "-m64"] + config.debug_info_flags + extra_cflags
45 clang_tsan_cxxflags = config.cxx_mode_flags + clang_tsan_cflags
46 # Add additional flags if we're using instrumented libc++.
47 # Instrumented libcxx currently not supported on Darwin.
48 if config.has_libcxx and config.host_os != 'Darwin':
49 # FIXME: Dehardcode this path somehow.
50 libcxx_path = os.path.join(config.compiler_rt_obj_root, "lib",
51 "tsan", "libcxx_tsan")
52 libcxx_incdir = os.path.join(libcxx_path, "include", "c++", "v1")
53 libcxx_libdir = os.path.join(libcxx_path, "lib")
54 libcxx_so = os.path.join(libcxx_libdir, "libc++.so")
55 clang_tsan_cxxflags += ["-std=c++11",
56 "-I%s" % libcxx_incdir,
58 "-Wl,-rpath=%s" % libcxx_libdir]
60 def build_invocation(compile_flags):
61 return " " + " ".join([config.clang] + compile_flags) + " "
63 config.substitutions.append( ("%clang_tsan ", build_invocation(clang_tsan_cflags)) )
64 config.substitutions.append( ("%clangxx_tsan ", build_invocation(clang_tsan_cxxflags)) )
66 # Define CHECK-%os to check for OS-dependent output.
67 config.substitutions.append( ('CHECK-%os', ("CHECK-" + config.host_os)))
69 config.substitutions.append( ("%deflake ", os.path.join(os.path.dirname(__file__), "deflake.bash")) )
71 # Default test suffixes.
72 config.suffixes = ['.c', '.cc', '.cpp', '.m', '.mm']
74 # ThreadSanitizer tests are currently supported on FreeBSD, Linux and Darwin.
75 if config.host_os not in ['FreeBSD', 'Linux', 'Darwin']:
76 config.unsupported = True
78 # Allow tests to use REQUIRES=stable-runtime. For use when you cannot use XFAIL
79 # because the test hangs.
80 if config.target_arch != 'aarch64':
81 config.available_features.add('stable-runtime')