Home | History | Annotate | Download | only in lit_tests 
      1 # -*- Python -*-
      2 
      3 import os
      4 
      5 def get_required_attr(config, attr_name):
      6   attr_value = getattr(config, attr_name, None)
      7   if not attr_value:
      8     lit.fatal("No attribute %r in test configuration! You may need to run "
      9               "tests from your build directory or add this attribute "
     10               "to lit.site.cfg " % attr_name)
     11   return attr_value
     12 
     13 # Setup config name.
     14 config.name = 'ThreadSanitizer'
     15 
     16 # Setup source root.
     17 config.test_source_root = os.path.dirname(__file__)
     18 
     19 def DisplayNoConfigMessage():
     20   lit.fatal("No site specific configuration available! " +
     21             "Try running your test from the build tree or running " +
     22             "make check-tsan")
     23 
     24 # Figure out LLVM source root.
     25 llvm_src_root = getattr(config, 'llvm_src_root', None)
     26 if llvm_src_root is None:
     27   # We probably haven't loaded the site-specific configuration: the user
     28   # is likely trying to run a test file directly, and the site configuration
     29   # wasn't created by the build system.
     30   tsan_site_cfg = lit.params.get('tsan_site_config', None)
     31   if (tsan_site_cfg) and (os.path.exists(tsan_site_cfg)):
     32     lit.load_config(config, tsan_site_cfg)
     33     raise SystemExit
     34 
     35   # Try to guess the location of site-specific configuration using llvm-config
     36   # util that can point where the build tree is.
     37   llvm_config = lit.util.which("llvm-config", config.environment["PATH"])
     38   if not llvm_config:
     39     DisplayNoConfigMessage()
     40 
     41   # Find out the presumed location of generated site config.
     42   llvm_obj_root = lit.util.capture(["llvm-config", "--obj-root"]).strip()
     43   tsan_site_cfg = os.path.join(llvm_obj_root, "projects", "compiler-rt",
     44                                "lib", "tsan", "lit_tests", "lit.site.cfg")
     45   if (not tsan_site_cfg) or (not os.path.exists(tsan_site_cfg)):
     46     DisplayNoConfigMessage()
     47 
     48   lit.load_config(config, tsan_site_cfg)
     49   raise SystemExit
     50 
     51 # Setup environment variables for running ThreadSanitizer.
     52 tsan_options = "atexit_sleep_ms=0"
     53 # Set path to external LLVM symbolizer to run ThreadSanitizer output tests.
     54 tsan_options += " " + "external_symbolizer_path=" + config.llvm_symbolizer_path
     55 
     56 config.environment['TSAN_OPTIONS'] = tsan_options
     57 
     58 # Setup default compiler flags used with -fsanitize=thread option.
     59 # FIXME: Review the set of required flags and check if it can be reduced.
     60 clang_tsan_cflags = ("-fsanitize=thread "
     61                       + "-g "
     62                       + "-Wall "
     63                       + "-lpthread "
     64                       + "-ldl ")
     65 clang_tsan_cxxflags = "--driver-mode=g++ " + clang_tsan_cflags
     66 config.substitutions.append( ("%clangxx_tsan ", (" " + config.clang + " " +
     67                                                 clang_tsan_cxxflags + " ")) )
     68 config.substitutions.append( ("%clang_tsan ", (" " + config.clang + " " +
     69                                               clang_tsan_cflags + " ")) )
     70 
     71 # Define CHECK-%os to check for OS-dependent output.
     72 config.substitutions.append( ('CHECK-%os', ("CHECK-" + config.host_os)))
     73 
     74 # Default test suffixes.
     75 config.suffixes = ['.c', '.cc', '.cpp']
     76 
     77 # ThreadSanitizer tests are currently supported on Linux only.
     78 if config.host_os not in ['Linux']:
     79   config.unsupported = True
     80