437 lines
18 KiB
Python
437 lines
18 KiB
Python
# -*- Python -*- vim: set syntax=python tabstop=4 expandtab cc=80:
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# Configuration file for the 'lit' test runner.
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import errno
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import locale
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import os
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import platform
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import re
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import shlex
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import signal
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import subprocess
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import sys
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import tempfile
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import time
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import lit.Test
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import lit.formats
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import lit.util
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class LibcxxTestFormat(lit.formats.FileBasedTest):
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"""
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Custom test format handler for use with the test format use by libc++.
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Tests fall into two categories:
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FOO.pass.cpp - Executable test which should compile, run, and exit with
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code 0.
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FOO.fail.cpp - Negative test case which is expected to fail compilation.
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"""
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def __init__(self, cxx_under_test, cpp_flags, ld_flags, exec_env):
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self.cxx_under_test = cxx_under_test
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self.cpp_flags = list(cpp_flags)
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self.ld_flags = list(ld_flags)
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self.exec_env = dict(exec_env)
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def execute_command(self, command, in_dir=None):
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kwargs = {
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'stdin' :subprocess.PIPE,
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'stdout':subprocess.PIPE,
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'stderr':subprocess.PIPE,
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}
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if in_dir:
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kwargs['cwd'] = in_dir
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p = subprocess.Popen(command, **kwargs)
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out,err = p.communicate()
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exitCode = p.wait()
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# Detect Ctrl-C in subprocess.
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if exitCode == -signal.SIGINT:
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raise KeyboardInterrupt
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return out, err, exitCode
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def execute(self, test, lit_config):
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while True:
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try:
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return self._execute(test, lit_config)
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except OSError, oe:
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if oe.errno != errno.ETXTBSY:
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raise
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time.sleep(0.1)
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def _execute(self, test, lit_config):
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# Extract test metadata from the test file.
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requires = []
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unsupported = []
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with open(test.getSourcePath()) as f:
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for ln in f:
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if 'XFAIL:' in ln:
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items = ln[ln.index('XFAIL:') + 6:].split(',')
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test.xfails.extend([s.strip() for s in items])
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elif 'REQUIRES:' in ln:
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items = ln[ln.index('REQUIRES:') + 9:].split(',')
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requires.extend([s.strip() for s in items])
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elif 'UNSUPPORTED:' in ln:
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items = ln[ln.index('UNSUPPORTED:') + 12:].split(',')
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unsupported.extend([s.strip() for s in items])
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elif not ln.strip().startswith("//") and ln.strip():
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# Stop at the first non-empty line that is not a C++
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# comment.
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break
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# Check that we have the required features.
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#
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# FIXME: For now, this is cribbed from lit.TestRunner, to avoid
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# introducing a dependency there. What we more ideally would like to do
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# is lift the "requires" handling to be a core lit framework feature.
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missing_required_features = [f for f in requires
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if f not in test.config.available_features]
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if missing_required_features:
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return (lit.Test.UNSUPPORTED,
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"Test requires the following features: %s" % (
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', '.join(missing_required_features),))
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unsupported_features = [f for f in unsupported
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if f in test.config.available_features]
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if unsupported_features:
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return (lit.Test.UNSUPPORTED,
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"Test is unsupported with the following features: %s" % (
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', '.join(unsupported_features),))
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# Evaluate the test.
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return self._evaluate_test(test, lit_config)
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def _evaluate_test(self, test, lit_config):
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name = test.path_in_suite[-1]
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source_path = test.getSourcePath()
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source_dir = os.path.dirname(source_path)
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# Check what kind of test this is.
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assert name.endswith('.pass.cpp') or name.endswith('.fail.cpp')
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expected_compile_fail = name.endswith('.fail.cpp')
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# If this is a compile (failure) test, build it and check for failure.
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if expected_compile_fail:
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cmd = [self.cxx_under_test, '-c',
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'-o', '/dev/null', source_path] + self.cpp_flags
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out, err, exitCode = self.execute_command(cmd)
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if exitCode == 1:
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return lit.Test.PASS, ""
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else:
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report = """Command: %s\n""" % ' '.join(["'%s'" % a
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for a in cmd])
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report += """Exit Code: %d\n""" % exitCode
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if out:
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report += """Standard Output:\n--\n%s--""" % out
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if err:
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report += """Standard Error:\n--\n%s--""" % err
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report += "\n\nExpected compilation to fail!"
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return lit.Test.FAIL, report
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else:
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exec_file = tempfile.NamedTemporaryFile(suffix="exe", delete=False)
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exec_path = exec_file.name
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exec_file.close()
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try:
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compile_cmd = [self.cxx_under_test, '-o', exec_path,
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source_path] + self.cpp_flags + self.ld_flags
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cmd = compile_cmd
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out, err, exitCode = self.execute_command(cmd)
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if exitCode != 0:
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report = """Command: %s\n""" % ' '.join(["'%s'" % a
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for a in cmd])
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report += """Exit Code: %d\n""" % exitCode
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if out:
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report += """Standard Output:\n--\n%s--""" % out
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if err:
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report += """Standard Error:\n--\n%s--""" % err
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report += "\n\nCompilation failed unexpectedly!"
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return lit.Test.FAIL, report
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cmd = []
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if self.exec_env:
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cmd.append('env')
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cmd.extend('%s=%s' % (name, value)
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for name,value in self.exec_env.items())
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cmd.append(exec_path)
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if lit_config.useValgrind:
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cmd = lit_config.valgrindArgs + cmd
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out, err, exitCode = self.execute_command(cmd, source_dir)
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if exitCode != 0:
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report = """Compiled With: %s\n""" % \
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' '.join(["'%s'" % a for a in compile_cmd])
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report += """Command: %s\n""" % \
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' '.join(["'%s'" % a for a in cmd])
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report += """Exit Code: %d\n""" % exitCode
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if out:
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report += """Standard Output:\n--\n%s--""" % out
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if err:
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report += """Standard Error:\n--\n%s--""" % err
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report += "\n\nCompiled test failed unexpectedly!"
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return lit.Test.FAIL, report
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finally:
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try:
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os.remove(exec_path)
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except:
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pass
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return lit.Test.PASS, ""
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class Configuration(object):
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def __init__(self, lit_config, config):
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self.lit_config = lit_config
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self.config = config
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self.cxx = None
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self.src_root = None
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self.obj_root = None
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self.env = {}
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self.compile_flags = []
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self.link_flags = []
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self.use_system_lib = False
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if platform.system() not in ('Darwin', 'FreeBSD', 'Linux'):
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self.lit_config.fatal("unrecognized system")
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def get_lit_conf(self, name, default=None):
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val = self.lit_config.params.get(name, None)
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if val is None:
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val = getattr(self.config, name, None)
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if val is None:
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val = default
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return val
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def configure(self):
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self.configure_cxx()
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self.configure_triple()
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self.configure_src_root()
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self.configure_obj_root()
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self.configure_use_system_lib()
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self.configure_env()
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self.configure_std_flag()
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self.configure_compile_flags()
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self.configure_link_flags()
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self.configure_sanitizer()
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self.configure_features()
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def get_test_format(self):
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return LibcxxTestFormat(
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self.cxx,
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cpp_flags=['-nostdinc++'] + self.compile_flags,
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ld_flags=['-nodefaultlibs'] + self.link_flags,
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exec_env=self.env)
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def configure_cxx(self):
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# Gather various compiler parameters.
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self.cxx = self.get_lit_conf('cxx_under_test')
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# If no specific cxx_under_test was given, attempt to infer it as
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# clang++.
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if self.cxx is None:
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clangxx = lit.util.which('clang++',
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self.config.environment['PATH'])
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if clangxx:
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self.cxx = clangxx
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self.lit_config.note(
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"inferred cxx_under_test as: %r" % self.cxx)
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if not self.cxx:
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self.lit_config.fatal('must specify user parameter cxx_under_test '
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'(e.g., --param=cxx_under_test=clang++)')
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def configure_src_root(self):
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self.src_root = self.get_lit_conf(
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'libcxx_src_root', os.path.dirname(self.config.test_source_root))
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def configure_obj_root(self):
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self.obj_root = self.get_lit_conf('libcxx_obj_root', self.src_root)
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def configure_use_system_lib(self):
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# This test suite supports testing against either the system library or
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# the locally built one; the former mode is useful for testing ABI
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# compatibility between the current headers and a shipping dynamic
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# library.
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use_system_lib_str = self.get_lit_conf('use_system_lib')
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if use_system_lib_str:
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if use_system_lib_str.lower() in ('1', 'true'):
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self.use_system_lib = True
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elif use_system_lib_str.lower() in ('', '0', 'false'):
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self.use_system_lib = False
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else:
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self.lit_config.fatal(
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'user parameter use_system_lib should be 0 or 1')
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else:
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# Default to testing against the locally built libc++ library.
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self.use_system_lib = False
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self.lit_config.note(
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"inferred use_system_lib as: %r" % self.use_system_lib)
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def configure_features(self):
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# Figure out which of the required locales we support
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locales = {
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'Darwin': {
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'en_US.UTF-8': 'en_US.UTF-8',
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'cs_CZ.ISO8859-2': 'cs_CZ.ISO8859-2',
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'fr_FR.UTF-8': 'fr_FR.UTF-8',
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'fr_CA.ISO8859-1': 'cs_CZ.ISO8859-1',
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'ru_RU.UTF-8': 'ru_RU.UTF-8',
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'zh_CN.UTF-8': 'zh_CN.UTF-8',
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},
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'FreeBSD': {
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'en_US.UTF-8': 'en_US.UTF-8',
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'cs_CZ.ISO8859-2': 'cs_CZ.ISO8859-2',
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'fr_FR.UTF-8': 'fr_FR.UTF-8',
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'fr_CA.ISO8859-1': 'fr_CA.ISO8859-1',
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'ru_RU.UTF-8': 'ru_RU.UTF-8',
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'zh_CN.UTF-8': 'zh_CN.UTF-8',
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},
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'Linux': {
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'en_US.UTF-8': 'en_US.UTF-8',
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'cs_CZ.ISO8859-2': 'cs_CZ.ISO-8859-2',
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'fr_FR.UTF-8': 'fr_FR.UTF-8',
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'fr_CA.ISO8859-1': 'fr_CA.ISO-8859-1',
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'ru_RU.UTF-8': 'ru_RU.UTF-8',
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'zh_CN.UTF-8': 'zh_CN.UTF-8',
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},
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'Windows': {
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'en_US.UTF-8': 'English_United States.1252',
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'cs_CZ.ISO8859-2': 'Czech_Czech Republic.1250',
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'fr_FR.UTF-8': 'French_France.1252',
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'fr_CA.ISO8859-1': 'French_Canada.1252',
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'ru_RU.UTF-8': 'Russian_Russia.1251',
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'zh_CN.UTF-8': 'Chinese_China.936',
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},
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}
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default_locale = locale.setlocale(locale.LC_ALL)
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for feature, loc in locales[platform.system()].items():
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try:
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locale.setlocale(locale.LC_ALL, loc)
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self.config.available_features.add('locale.{0}'.format(feature))
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except:
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self.lit_config.warning('The locale {0} is not supported by '
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'your platform. Some tests will be '
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'unsupported.'.format(loc))
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locale.setlocale(locale.LC_ALL, default_locale)
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# Write an "available feature" that combines the triple when
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# use_system_lib is enabled. This is so that we can easily write XFAIL
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# markers for tests that are known to fail with versions of libc++ as
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# were shipped with a particular triple.
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if self.use_system_lib:
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# Drop sub-major version components from the triple, because the
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# current XFAIL handling expects exact matches for feature checks.
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sanitized_triple = re.sub(
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r"([^-]+)-([^-]+)-([^-.]+).*", r"\1-\2-\3",
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self.config.target_triple)
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self.config.available_features.add(
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'with_system_lib=%s' % sanitized_triple)
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def configure_compile_flags(self):
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# Configure extra compiler flags.
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self.compile_flags += ['-I' + self.src_root + '/include',
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'-I' + self.src_root + '/test/support']
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def configure_link_flags(self):
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self.link_flags += ['-L' + self.obj_root + '/lib', '-lc++']
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link_flags_str = self.get_lit_conf('link_flags')
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if link_flags_str is None:
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cxx_abi = self.get_lit_conf('cxx_abi', 'libcxxabi')
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if cxx_abi == 'libstdc++':
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self.link_flags += ['-lstdc++']
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elif cxx_abi == 'libsupc++':
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self.link_flags += ['-lsupc++']
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elif cxx_abi == 'libcxxabi':
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self.link_flags += ['-lc++abi']
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elif cxx_abi == 'libcxxrt':
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self.link_flags += ['-lcxxrt']
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elif cxx_abi == 'none':
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pass
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else:
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self.lit_config.fatal(
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'C++ ABI setting %s unsupported for tests' % cxx_abi)
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if sys.platform == 'darwin':
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self.link_flags += ['-lSystem']
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elif sys.platform == 'linux2':
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self.link_flags += ['-lgcc_eh', '-lc', '-lm', '-lpthread',
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'-lrt', '-lgcc_s']
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elif sys.platform.startswith('freebsd'):
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self.link_flags += ['-lc', '-lm', '-pthread', '-lgcc_s']
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else:
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self.lit_config.fatal("unrecognized system")
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self.lit_config.note(
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"inferred link_flags as: %r" % self.link_flags)
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if link_flags_str:
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self.link_flags += shlex.split(link_flags_str)
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if sys.platform == 'linux2':
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if not self.use_system_lib:
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self.link_flags += ['-Wl,-R', self.obj_root + '/lib']
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self.compile_flags += ['-D__STDC_FORMAT_MACROS',
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'-D__STDC_LIMIT_MACROS',
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'-D__STDC_CONSTANT_MACROS']
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elif sys.platform.startswith('freebsd'):
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if not self.use_system_lib:
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self.link_flags += ['-Wl,-R', self.obj_root + '/lib']
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def configure_std_flag(self):
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# Try and get the std version from the command line. Fall back to
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# default given in lit.site.cfg is not present. If default is not
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# present then force c++11.
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std = self.get_lit_conf('std')
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if std is None:
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std = 'c++11'
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self.lit_config.note('using default std: \'-std=c++11\'')
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self.compile_flags += ['-std={0}'.format(std)]
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self.config.available_features.add(std)
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def configure_sanitizer(self):
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san = self.get_lit_conf('llvm_use_sanitizer', '').strip()
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if san:
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self.compile_flags += ['-fno-omit-frame-pointer']
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if san == 'Address':
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self.compile_flags += ['-fsanitize=address']
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self.config.available_features.add('asan')
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elif san == 'Memory' or san == 'MemoryWithOrigins':
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self.compile_flags += ['-fsanitize=memory']
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if san == 'MemoryWithOrigins':
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self.compile_flags += ['-fsanitize-memory-track-origins']
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self.config.available_features.add('msan')
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else:
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self.lit_config.fatal('unsupported value for '
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'libcxx_use_san: {0}'.format(san))
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def configure_triple(self):
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# Get or infer the target triple.
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self.config.target_triple = self.get_lit_conf('target_triple')
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# If no target triple was given, try to infer it from the compiler
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# under test.
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if not self.config.target_triple:
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self.config.target_triple = lit.util.capture(
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[self.cxx, '-dumpmachine']).strip()
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self.lit_config.note(
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"inferred target_triple as: %r" % self.config.target_triple)
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def configure_env(self):
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# Configure extra linker parameters.
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if sys.platform == 'darwin':
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if not self.use_system_lib:
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self.env['DYLD_LIBRARY_PATH'] = os.path.join(self.obj_root,
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'lib')
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# name: The name of this test suite.
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config.name = 'libc++'
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# suffixes: A list of file extensions to treat as test files.
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config.suffixes = ['.cpp']
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# test_source_root: The root path where tests are located.
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config.test_source_root = os.path.dirname(__file__)
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configuration = Configuration(lit_config, config)
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configuration.configure()
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config.test_format = configuration.get_test_format()
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