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# -*- Python -*-
import os
def get_required_attr(config, attr_name):
attr_value = getattr(config, attr_name, None)
if not attr_value:
lit_config.fatal(
"No attribute %r in test configuration! You may need to run "
"tests from your build directory or add this attribute "
"to lit.site.cfg " % attr_name)
return attr_value
# Setup config name.
config.name = 'ThreadSanitizer' + config.name_suffix
# Setup source root.
config.test_source_root = os.path.dirname(__file__)
# Setup environment variables for running ThreadSanitizer.
default_tsan_opts = "atexit_sleep_ms=0"
if config.host_os == 'Darwin':
# On Darwin, we default to `abort_on_error=1`, which would make tests run
# much slower. Let's override this and run lit tests with 'abort_on_error=0'.
default_tsan_opts += ':abort_on_error=0'
# On Darwin, we default to ignore_noninstrumented_modules=1, which also
# suppresses some races the tests are supposed to find. Let's run without this
# setting, but turn it back on for Darwin tests (see Darwin/lit.local.cfg).
default_tsan_opts += ':ignore_noninstrumented_modules=0'
# Platform-specific default TSAN_OPTIONS for lit tests.
if default_tsan_opts:
config.environment['TSAN_OPTIONS'] = default_tsan_opts
default_tsan_opts += ':'
config.substitutions.append(('%env_tsan_opts=',
'env TSAN_OPTIONS=' + default_tsan_opts))
# GCC driver doesn't add necessary compile/link flags with -fsanitize=thread.
if config.compiler_id == 'GNU':
extra_cflags = ["-fPIE", "-pthread", "-ldl", "-lstdc++", "-lrt", "-pie"]
else:
extra_cflags = []
tsan_incdir = config.test_source_root + "/../"
# Setup default compiler flags used with -fsanitize=thread option.
clang_tsan_cflags = (["-fsanitize=thread",
"-Wall"] +
[config.target_cflags] +
config.debug_info_flags +
extra_cflags +
["-I%s" % tsan_incdir])
clang_tsan_cxxflags = config.cxx_mode_flags + clang_tsan_cflags + ["-std=c++11"] + ["-I%s" % tsan_incdir]
# Add additional flags if we're using instrumented libc++.
# Instrumented libcxx currently not supported on Darwin.
if config.has_libcxx and config.host_os != 'Darwin':
# FIXME: Dehardcode this path somehow.
libcxx_path = os.path.join(config.compiler_rt_obj_root, "lib",
"tsan", "libcxx_tsan_" + config.target_arch)
libcxx_incdir = os.path.join(libcxx_path, "include", "c++", "v1")
libcxx_libdir = os.path.join(libcxx_path, "lib")
libcxx_so = os.path.join(libcxx_libdir, "libc++.so")
clang_tsan_cxxflags += ["-nostdinc++",
"-I%s" % libcxx_incdir,
libcxx_so,
"-Wl,-rpath=%s" % libcxx_libdir]
def build_invocation(compile_flags):
return " " + " ".join([config.clang] + compile_flags) + " "
config.substitutions.append( ("%clang_tsan ", build_invocation(clang_tsan_cflags)) )
config.substitutions.append( ("%clangxx_tsan ", build_invocation(clang_tsan_cxxflags)) )
# Define CHECK-%os to check for OS-dependent output.
config.substitutions.append( ('CHECK-%os', ("CHECK-" + config.host_os)))
config.substitutions.append( ("%deflake ", os.path.join(os.path.dirname(__file__), "deflake.bash") + " "))
# Default test suffixes.
config.suffixes = ['.c', '.cc', '.cpp', '.m', '.mm']
if config.host_os not in ['FreeBSD', 'Linux', 'Darwin', 'NetBSD']:
config.unsupported = True
if config.android:
config.unsupported = True
if config.host_os == 'Darwin' and config.target_arch in ["x86_64", "x86_64h"]:
config.parallelism_group = "darwin-64bit-sanitizer"
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