1# -*- Python -*- 2 3import os 4 5def get_required_attr(config, attr_name): 6 attr_value = getattr(config, attr_name, None) 7 if not attr_value: 8 lit_config.fatal( 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.py " % attr_name) 12 return attr_value 13 14# Setup config name. 15config.name = 'ThreadSanitizer' + config.name_suffix 16 17# Setup source root. 18config.test_source_root = os.path.dirname(__file__) 19 20# Setup environment variables for running ThreadSanitizer. 21default_tsan_opts = "atexit_sleep_ms=0" 22 23if 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' 27 # On Darwin, we default to ignore_noninstrumented_modules=1, which also 28 # suppresses some races the tests are supposed to find. Let's run without this 29 # setting, but turn it back on for Darwin tests (see Darwin/lit.local.cfg.py). 30 default_tsan_opts += ':ignore_noninstrumented_modules=0' 31 default_tsan_opts += ':ignore_interceptors_accesses=0' 32 33# Platform-specific default TSAN_OPTIONS for lit tests. 34if default_tsan_opts: 35 config.environment['TSAN_OPTIONS'] = default_tsan_opts 36 default_tsan_opts += ':' 37config.substitutions.append(('%env_tsan_opts=', 38 'env TSAN_OPTIONS=' + default_tsan_opts)) 39 40# GCC driver doesn't add necessary compile/link flags with -fsanitize=thread. 41if config.compiler_id == 'GNU': 42 extra_cflags = ["-fPIE", "-pthread", "-ldl", "-lrt", "-pie"] 43else: 44 extra_cflags = [] 45 46tsan_incdir = config.test_source_root + "/../" 47# Setup default compiler flags used with -fsanitize=thread option. 48clang_tsan_cflags = (["-fsanitize=thread", 49 "-Wall"] + 50 [config.target_cflags] + 51 config.debug_info_flags + 52 extra_cflags + 53 ["-I%s" % tsan_incdir]) 54clang_tsan_cxxflags = config.cxx_mode_flags + clang_tsan_cflags + ["-std=c++11"] + ["-I%s" % tsan_incdir] 55# Add additional flags if we're using instrumented libc++. 56# Instrumented libcxx currently not supported on Darwin. 57if config.has_libcxx and config.host_os != 'Darwin': 58 # FIXME: Dehardcode this path somehow. 59 libcxx_path = os.path.join(config.compiler_rt_obj_root, "lib", 60 "tsan", "libcxx_tsan_%s" % config.target_arch) 61 libcxx_incdir = os.path.join(libcxx_path, "include", "c++", "v1") 62 libcxx_libdir = os.path.join(libcxx_path, "lib") 63 libcxx_a = os.path.join(libcxx_libdir, "libc++.a") 64 clang_tsan_cxxflags += ["-nostdinc++", 65 "-I%s" % libcxx_incdir] 66 config.substitutions.append( ("%link_libcxx_tsan", libcxx_a) ) 67else: 68 config.substitutions.append( ("%link_libcxx_tsan", "") ) 69 70def build_invocation(compile_flags): 71 return " " + " ".join([config.clang] + compile_flags) + " " 72 73config.substitutions.append( ("%clang_tsan ", build_invocation(clang_tsan_cflags)) ) 74config.substitutions.append( ("%clangxx_tsan ", build_invocation(clang_tsan_cxxflags)) ) 75 76# Define CHECK-%os to check for OS-dependent output. 77config.substitutions.append( ('CHECK-%os', ("CHECK-" + config.host_os))) 78 79config.substitutions.append( ("%deflake ", os.path.join(os.path.dirname(__file__), "deflake.bash") + " " + config.deflake_threshold + " ")) 80 81# Default test suffixes. 82config.suffixes = ['.c', '.cpp', '.m', '.mm'] 83 84if config.host_os not in ['FreeBSD', 'Linux', 'Darwin', 'NetBSD']: 85 config.unsupported = True 86 87if config.android: 88 config.unsupported = True 89 90if not config.parallelism_group: 91 config.parallelism_group = 'shadow-memory' 92 93if config.host_os == 'NetBSD': 94 config.substitutions.insert(0, ('%run', config.netbsd_noaslr_prefix)) 95