def _testPipeReader(self, master_fd, slave_fd, test_string):
"""
Use a poll loop to read data from a pipe and assert that
the data written to the pipe is identical to the data
read from the pipe.
"""
# WARNING: It is very important to use unbuffered mode here,
# in order to avoid issue 5380 with python3.
master_file = os.fdopen(master_fd, 'rb', 0)
scheduler = global_event_loop()
consumer = PipeReader(
input_files={"producer" : master_file},
_use_array=self._use_array,
scheduler=scheduler)
producer = PopenProcess(
pipe_reader=consumer,
proc=subprocess.Popen(["bash", "-c", self._echo_cmd % test_string],
stdout=slave_fd),
scheduler=scheduler)
producer.start()
os.close(slave_fd)
producer.wait()
consumer.wait()
self.assertEqual(producer.returncode, os.EX_OK)
self.assertEqual(consumer.returncode, os.EX_OK)
return consumer.getvalue().decode('ascii', 'replace')
def _receive_reply(self, input_fd):
start_time = time.time()
pipe_reader = PipeReader(input_files={"input_fd":input_fd},
scheduler=global_event_loop())
pipe_reader.start()
eof = pipe_reader.poll() is not None
while not eof:
pipe_reader._wait_loop(timeout=self._COMMUNICATE_RETRY_TIMEOUT)
eof = pipe_reader.poll() is not None
if not eof:
if self._daemon_is_alive():
self._timeout_retry_msg(start_time,
portage.localization._('during read'))
else:
pipe_reader.cancel()
self._no_daemon_msg()
return 2
buf = pipe_reader.getvalue()
retval = 2
if not buf:
portage.util.writemsg_level(
"ebuild-ipc: %s\n" % \
(portage.localization._('read failed'),),
level=logging.ERROR, noiselevel=-1)
else:
try:
reply = pickle.loads(buf)
except SystemExit:
raise
except Exception as e:
# The pickle module can raise practically
# any exception when given corrupt data.
portage.util.writemsg_level(
"ebuild-ipc: %s\n" % (e,),
level=logging.ERROR, noiselevel=-1)
else:
(out, err, retval) = reply
if out:
portage.util.writemsg_stdout(out, noiselevel=-1)
if err:
portage.util.writemsg(err, noiselevel=-1)
return retval
def _testPipeReader(self, test_string):
"""
Use a poll loop to read data from a pipe and assert that
the data written to the pipe is identical to the data
read from the pipe.
"""
if self._use_pty:
got_pty, master_fd, slave_fd = _create_pty_or_pipe()
if not got_pty:
os.close(slave_fd)
os.close(master_fd)
skip_reason = "pty not acquired"
self.portage_skip = skip_reason
self.fail(skip_reason)
return
else:
master_fd, slave_fd = os.pipe()
# WARNING: It is very important to use unbuffered mode here,
# in order to avoid issue 5380 with python3.
master_file = os.fdopen(master_fd, 'rb', 0)
slave_file = os.fdopen(slave_fd, 'wb', 0)
task_scheduler = TaskScheduler(max_jobs=2)
producer = SpawnProcess(
args=["bash", "-c", self._echo_cmd % test_string],
env=os.environ, fd_pipes={1:slave_fd},
scheduler=task_scheduler.sched_iface)
task_scheduler.add(producer)
slave_file.close()
consumer = PipeReader(
input_files={"producer" : master_file},
scheduler=task_scheduler.sched_iface, _use_array=self._use_array)
task_scheduler.add(consumer)
# This will ensure that both tasks have exited, which
# is necessary to avoid "ResourceWarning: unclosed file"
# warnings since Python 3.2 (and also ensures that we
# don't leave any zombie child processes).
task_scheduler.run()
self.assertEqual(producer.returncode, os.EX_OK)
self.assertEqual(consumer.returncode, os.EX_OK)
return consumer.getvalue().decode('ascii', 'replace')
def _start(self):
pr, pw = os.pipe()
self.fd_pipes = {}
self.fd_pipes[pw] = pw
self._digest_pw = pw
self._digest_pipe_reader = PipeReader(
input_files={"input":pr},
scheduler=self.scheduler)
self._digest_pipe_reader.addExitListener(self._digest_pipe_reader_exit)
self._digest_pipe_reader.start()
ForkProcess._start(self)
os.close(pw)
def testPipeReader(self):
"""
Use a poll loop to read data from a pipe and assert that
the data written to the pipe is identical to the data
read from the pipe.
"""
test_string = 2 * "blah blah blah\n"
master_fd, slave_fd = self._create_pipe()
master_file = os.fdopen(master_fd, 'rb')
task_scheduler = TaskScheduler(max_jobs=2)
scheduler = task_scheduler.sched_iface
class Producer(SpawnProcess):
def _spawn(self, args, **kwargs):
rval = SpawnProcess._spawn(self, args, **kwargs)
os.close(kwargs['fd_pipes'][1])
return rval
producer = Producer(
args=["bash", "-c", "echo -n '%s'" % test_string],
fd_pipes={1:slave_fd}, scheduler=scheduler)
consumer = PipeReader(
input_files={"producer" : master_file},
scheduler=scheduler)
task_scheduler.add(producer)
task_scheduler.add(consumer)
task_scheduler.run()
if sys.hexversion >= 0x3000000:
test_string = test_string.encode()
self._assertEqual(test_string, consumer.getvalue())
def testLazyImportPortageBaseline(self):
"""
Check what modules are imported by a baseline module import.
"""
env = os.environ.copy()
pythonpath = env.get('PYTHONPATH')
if pythonpath is not None and not pythonpath.strip():
pythonpath = None
if pythonpath is None:
pythonpath = ''
else:
pythonpath = ':' + pythonpath
pythonpath = PORTAGE_PYM_PATH + pythonpath
env['PYTHONPATH'] = pythonpath
# If python is patched to insert the path of the
# currently installed portage module into sys.path,
# then the above PYTHONPATH override doesn't help.
env['PORTAGE_PYM_PATH'] = PORTAGE_PYM_PATH
scheduler = global_event_loop()
master_fd, slave_fd = os.pipe()
master_file = os.fdopen(master_fd, 'rb', 0)
slave_file = os.fdopen(slave_fd, 'wb')
producer = SpawnProcess(args=self._baseline_import_cmd,
env=env,
fd_pipes={1: slave_fd},
scheduler=scheduler)
producer.start()
slave_file.close()
consumer = PipeReader(input_files={"producer": master_file},
scheduler=scheduler)
consumer.start()
consumer.wait()
self.assertEqual(producer.wait(), os.EX_OK)
self.assertEqual(consumer.wait(), os.EX_OK)
output = consumer.getvalue().decode('ascii', 'replace').split()
unexpected_modules = " ".join(sorted(x for x in output \
if self._module_re.match(x) is not None and \
x not in self._baseline_imports))
self.assertEqual("", unexpected_modules)
def testPipeReader(self):
"""
Use a poll loop to read data from a pipe and assert that
the data written to the pipe is identical to the data
read from the pipe.
"""
test_string = 2 * "blah blah blah\n"
scheduler = PollScheduler().sched_iface
master_fd, slave_fd = os.pipe()
master_file = os.fdopen(master_fd, 'rb', 0)
slave_file = os.fdopen(slave_fd, 'wb')
producer = SpawnProcess(
args=["bash", "-c", "echo -n '%s'" % test_string],
env=os.environ, fd_pipes={1:slave_fd},
scheduler=scheduler)
producer.start()
slave_file.close()
consumer = PipeReader(
input_files={"producer" : master_file},
scheduler=scheduler)
consumer.start()
# This will ensure that both tasks have exited, which
# is necessary to avoid "ResourceWarning: unclosed file"
# warnings since Python 3.2 (and also ensures that we
# don't leave any zombie child processes).
scheduler.schedule()
self.assertEqual(producer.returncode, os.EX_OK)
self.assertEqual(consumer.returncode, os.EX_OK)
output = consumer.getvalue().decode('ascii', 'replace')
self.assertEqual(test_string, output)
def _check_sig_key(self):
null_fd = os.open("/dev/null", os.O_RDONLY)
popen_proc = PopenProcess(
proc=subprocess.Popen(
["gpg", "--verify", self._manifest_path],
stdin=null_fd,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
),
pipe_reader=PipeReader(),
)
os.close(null_fd)
popen_proc.pipe_reader.input_files = {
"producer": popen_proc.proc.stdout
}
self._start_task(popen_proc, self._check_sig_key_exit)
def testLazyImportPortageBaseline(self):
"""
Check what modules are imported by a baseline module import.
"""
env = os.environ.copy()
pythonpath = env.get('PYTHONPATH')
if pythonpath is not None and not pythonpath.strip():
pythonpath = None
if pythonpath is None:
pythonpath = ''
else:
pythonpath = ':' + pythonpath
pythonpath = PORTAGE_PYM_PATH + pythonpath
env['PYTHONPATH'] = pythonpath
# If python is patched to insert the path of the
# currently installed portage module into sys.path,
# then the above PYTHONPATH override doesn't help.
env['PORTAGE_PYM_PATH'] = PORTAGE_PYM_PATH
scheduler = PollScheduler().sched_iface
master_fd, slave_fd = os.pipe()
master_file = os.fdopen(master_fd, 'rb', 0)
slave_file = os.fdopen(slave_fd, 'wb')
producer = SpawnProcess(
args=self._baseline_import_cmd,
env=env, fd_pipes={1:slave_fd},
scheduler=scheduler)
producer.start()
slave_file.close()
consumer = PipeReader(
input_files={"producer" : master_file},
scheduler=scheduler)
consumer.start()
consumer.wait()
self.assertEqual(producer.wait(), os.EX_OK)
self.assertEqual(consumer.wait(), os.EX_OK)
output = consumer.getvalue().decode('ascii', 'replace').split()
unexpected_modules = " ".join(sorted(x for x in output \
if self._module_re.match(x) is not None and \
x not in self._baseline_imports))
self.assertEqual("", unexpected_modules)
class _Reader(object):
def __init__(self, future, input_file, loop):
self._future = future
self._pipe_reader = PipeReader(input_files={'input_file': input_file},
scheduler=loop)
self._future.add_done_callback(self._cancel_callback)
self._pipe_reader.addExitListener(self._eof)
self._pipe_reader.start()
def _cancel_callback(self, future):
if future.cancelled():
self._cancel()
def _eof(self, pipe_reader):
self._pipe_reader = None
self._future.set_result(pipe_reader.getvalue())
def _cancel(self):
if self._pipe_reader is not None and self._pipe_reader.poll() is None:
self._pipe_reader.removeExitListener(self._eof)
self._pipe_reader.cancel()
self._pipe_reader = None
def _testPipeReader(self, test_string):
"""
Use a poll loop to read data from a pipe and assert that
the data written to the pipe is identical to the data
read from the pipe.
"""
producer = PopenProcess(proc=subprocess.Popen(
["bash", "-c", self._echo_cmd % test_string],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT),
pipe_reader=PipeReader(),
scheduler=global_event_loop())
consumer = producer.pipe_reader
consumer.input_files = {"producer": producer.proc.stdout}
producer.start()
producer.wait()
self.assertEqual(producer.returncode, os.EX_OK)
self.assertEqual(consumer.returncode, os.EX_OK)
return consumer.getvalue().decode('ascii', 'replace')
def _testPipeReader(self, master_fd, slave_fd, test_string):
"""
Use a poll loop to read data from a pipe and assert that
the data written to the pipe is identical to the data
read from the pipe.
"""
# WARNING: It is very important to use unbuffered mode here,
# in order to avoid issue 5380 with python3.
master_file = os.fdopen(master_fd, "rb", 0)
scheduler = global_event_loop()
consumer = PipeReader(
input_files={"producer": master_file},
_use_array=self._use_array,
scheduler=scheduler,
)
consumer.start()
producer = scheduler.run_until_complete(
asyncio.create_subprocess_exec(
"bash",
"-c",
self._echo_cmd % test_string,
stdout=slave_fd,
loop=scheduler,
))
os.close(slave_fd)
scheduler.run_until_complete(producer.wait())
scheduler.run_until_complete(consumer.async_wait())
self.assertEqual(producer.returncode, os.EX_OK)
self.assertEqual(consumer.returncode, os.EX_OK)
return consumer.getvalue().decode("ascii", "replace")
class FileDigester(ForkProcess):
"""
Asynchronously generate file digests. Pass in file_path and
hash_names, and after successful execution, the digests
attribute will be a dict containing all of the requested
digests.
"""
__slots__ = ('file_path', 'digests', 'hash_names',
'_digest_pipe_reader', '_digest_pw')
def _start(self):
pr, pw = os.pipe()
self.fd_pipes = {}
self.fd_pipes[pw] = pw
self._digest_pw = pw
self._digest_pipe_reader = PipeReader(
input_files={"input":pr},
scheduler=self.scheduler)
self._digest_pipe_reader.addExitListener(self._digest_pipe_reader_exit)
self._digest_pipe_reader.start()
ForkProcess._start(self)
os.close(pw)
def _run(self):
digests = perform_multiple_checksums(self.file_path,
hashes=self.hash_names)
buf = "".join("%s=%s\n" % item
for item in digests.items()).encode('utf_8')
while buf:
buf = buf[os.write(self._digest_pw, buf):]
return os.EX_OK
def _parse_digests(self, data):
digests = {}
for line in data.decode('utf_8').splitlines():
parts = line.split('=', 1)
if len(parts) == 2:
digests[parts[0]] = parts[1]
self.digests = digests
def _pipe_logger_exit(self, pipe_logger):
# Ignore this event, since we want to ensure that we
# exit only after _digest_pipe_reader has reached EOF.
self._pipe_logger = None
def _digest_pipe_reader_exit(self, pipe_reader):
self._parse_digests(pipe_reader.getvalue())
self._digest_pipe_reader = None
self._unregister()
self.wait()
def _unregister(self):
ForkProcess._unregister(self)
pipe_reader = self._digest_pipe_reader
if pipe_reader is not None:
self._digest_pipe_reader = None
pipe_reader.removeExitListener(self._digest_pipe_reader_exit)
pipe_reader.cancel()
class AsyncFunction(ForkProcess):
"""
Execute a function call in a fork, and retrieve the function
return value via pickling/unpickling, accessible as the
"result" attribute after the forked process has exited.
"""
# NOTE: This class overrides the meaning of the SpawnProcess 'args'
# attribute, and uses it to hold the positional arguments for the
# 'target' function.
__slots__ = ('kwargs', 'result', 'target',
'_async_func_reader', '_async_func_reader_pw')
def _start(self):
pr, pw = os.pipe()
self.fd_pipes = {}
self.fd_pipes[pw] = pw
self._async_func_reader_pw = pw
self._async_func_reader = PipeReader(
input_files={"input":pr},
scheduler=self.scheduler)
self._async_func_reader.addExitListener(self._async_func_reader_exit)
self._async_func_reader.start()
ForkProcess._start(self)
os.close(pw)
def _run(self):
try:
result = self.target(*(self.args or []), **(self.kwargs or {}))
os.write(self._async_func_reader_pw, pickle.dumps(result))
except Exception:
traceback.print_exc()
return 1
return os.EX_OK
def _pipe_logger_exit(self, pipe_logger):
# Ignore this event, since we want to ensure that we exit
# only after _async_func_reader_exit has reached EOF.
self._pipe_logger = None
def _async_func_reader_exit(self, pipe_reader):
try:
self.result = pickle.loads(pipe_reader.getvalue())
except Exception:
# The child process will have printed a traceback in this case,
# and returned an unsuccessful returncode.
pass
self._async_func_reader = None
if self.returncode is None:
self._async_waitpid()
else:
self._unregister()
self._async_wait()
def _unregister(self):
ForkProcess._unregister(self)
pipe_reader = self._async_func_reader
if pipe_reader is not None:
self._async_func_reader = None
pipe_reader.removeExitListener(self._async_func_reader_exit)
pipe_reader.cancel()
class FileDigester(ForkProcess):
"""
Asynchronously generate file digests. Pass in file_path and
hash_names, and after successful execution, the digests
attribute will be a dict containing all of the requested
digests.
"""
__slots__ = ('file_path', 'digests', 'hash_names', '_digest_pipe_reader',
'_digest_pw')
def _start(self):
pr, pw = os.pipe()
self.fd_pipes = {}
self.fd_pipes[pw] = pw
self._digest_pw = pw
self._digest_pipe_reader = PipeReader(input_files={"input": pr},
scheduler=self.scheduler)
self._digest_pipe_reader.addExitListener(self._digest_pipe_reader_exit)
self._digest_pipe_reader.start()
ForkProcess._start(self)
os.close(pw)
def _run(self):
digests = perform_multiple_checksums(self.file_path,
hashes=self.hash_names)
buf = "".join("%s=%s\n" % item
for item in digests.items()).encode('utf_8')
while buf:
buf = buf[os.write(self._digest_pw, buf):]
return os.EX_OK
def _parse_digests(self, data):
digests = {}
for line in data.decode('utf_8').splitlines():
parts = line.split('=', 1)
if len(parts) == 2:
digests[parts[0]] = parts[1]
self.digests = digests
def _pipe_logger_exit(self, pipe_logger):
# Ignore this event, since we want to ensure that we
# exit only after _digest_pipe_reader has reached EOF.
self._pipe_logger = None
def _digest_pipe_reader_exit(self, pipe_reader):
self._parse_digests(pipe_reader.getvalue())
self._digest_pipe_reader = None
self._unregister()
self.wait()
def _unregister(self):
ForkProcess._unregister(self)
pipe_reader = self._digest_pipe_reader
if pipe_reader is not None:
self._digest_pipe_reader = None
pipe_reader.removeExitListener(self._digest_pipe_reader_exit)
pipe_reader.cancel()
def testDoebuild(self):
"""
Invoke portage.doebuild() with the fd_pipes parameter, and
check that the expected output appears in the pipe. This
functionality is not used by portage internally, but it is
supported for API consumers (see bug #475812).
"""
output_fd = 200
ebuild_body = ['S=${WORKDIR}']
for phase_func in ('pkg_info', 'pkg_nofetch', 'pkg_pretend',
'pkg_setup', 'src_unpack', 'src_prepare', 'src_configure',
'src_compile', 'src_test', 'src_install'):
ebuild_body.append(('%s() { echo ${EBUILD_PHASE}'
' 1>&%s; }') % (phase_func, output_fd))
ebuild_body.append('')
ebuild_body = '\n'.join(ebuild_body)
ebuilds = {
'app-misct/foo-1': {
'EAPI' : '5',
"MISC_CONTENT": ebuild_body,
}
}
# Override things that may be unavailable, or may have portability
# issues when running tests in exotic environments.
# prepstrip - bug #447810 (bash read builtin EINTR problem)
true_symlinks = ("find", "prepstrip", "sed", "scanelf")
true_binary = portage.process.find_binary("true")
self.assertEqual(true_binary is None, False,
"true command not found")
dev_null = open(os.devnull, 'wb')
playground = ResolverPlayground(ebuilds=ebuilds)
try:
QueryCommand._db = playground.trees
root_config = playground.trees[playground.eroot]['root_config']
portdb = root_config.trees["porttree"].dbapi
settings = portage.config(clone=playground.settings)
if "__PORTAGE_TEST_HARDLINK_LOCKS" in os.environ:
settings["__PORTAGE_TEST_HARDLINK_LOCKS"] = \
os.environ["__PORTAGE_TEST_HARDLINK_LOCKS"]
settings.backup_changes("__PORTAGE_TEST_HARDLINK_LOCKS")
settings.features.add("noauto")
settings.features.add("test")
settings['PORTAGE_PYTHON'] = portage._python_interpreter
settings['PORTAGE_QUIET'] = "1"
settings['PYTHONDONTWRITEBYTECODE'] = os.environ.get("PYTHONDONTWRITEBYTECODE", "")
fake_bin = os.path.join(settings["EPREFIX"], "bin")
portage.util.ensure_dirs(fake_bin)
for x in true_symlinks:
os.symlink(true_binary, os.path.join(fake_bin, x))
settings["__PORTAGE_TEST_PATH_OVERRIDE"] = fake_bin
settings.backup_changes("__PORTAGE_TEST_PATH_OVERRIDE")
cpv = 'app-misct/foo-1'
metadata = dict(zip(Package.metadata_keys,
portdb.aux_get(cpv, Package.metadata_keys)))
pkg = Package(built=False, cpv=cpv, installed=False,
metadata=metadata, root_config=root_config,
type_name='ebuild')
settings.setcpv(pkg)
ebuildpath = portdb.findname(cpv)
self.assertNotEqual(ebuildpath, None)
for phase in ('info', 'nofetch',
'pretend', 'setup', 'unpack', 'prepare', 'configure',
'compile', 'test', 'install', 'qmerge', 'clean', 'merge'):
pr, pw = os.pipe()
producer = DoebuildProcess(doebuild_pargs=(ebuildpath, phase),
doebuild_kwargs={"settings" : settings,
"mydbapi": portdb, "tree": "porttree",
"vartree": root_config.trees["vartree"],
"fd_pipes": {
1: dev_null.fileno(),
2: dev_null.fileno(),
output_fd: pw,
},
"prev_mtimes": {}})
consumer = PipeReader(
input_files={"producer" : pr})
task_scheduler = TaskScheduler(iter([producer, consumer]),
max_jobs=2)
try:
task_scheduler.start()
finally:
# PipeReader closes pr
os.close(pw)
task_scheduler.wait()
output = portage._unicode_decode(
consumer.getvalue()).rstrip("\n")
if task_scheduler.returncode != os.EX_OK:
portage.writemsg(output, noiselevel=-1)
self.assertEqual(task_scheduler.returncode, os.EX_OK)
if phase not in ('clean', 'merge', 'qmerge'):
self.assertEqual(phase, output)
finally:
dev_null.close()
playground.cleanup()
QueryCommand._db = None
def testDoebuild(self):
"""
Invoke portage.doebuild() with the fd_pipes parameter, and
check that the expected output appears in the pipe. This
functionality is not used by portage internally, but it is
supported for API consumers (see bug #475812).
"""
output_fd = 200
ebuild_body = ["S=${WORKDIR}"]
for phase_func in (
"pkg_info",
"pkg_nofetch",
"pkg_pretend",
"pkg_setup",
"src_unpack",
"src_prepare",
"src_configure",
"src_compile",
"src_test",
"src_install",
):
ebuild_body.append(("%s() { echo ${EBUILD_PHASE}"
" 1>&%s; }") % (phase_func, output_fd))
ebuild_body.append("")
ebuild_body = "\n".join(ebuild_body)
ebuilds = {
"app-misct/foo-1": {
"EAPI": "5",
"MISC_CONTENT": ebuild_body,
}
}
# Override things that may be unavailable, or may have portability
# issues when running tests in exotic environments.
# prepstrip - bug #447810 (bash read builtin EINTR problem)
true_symlinks = ("find", "prepstrip", "sed", "scanelf")
true_binary = portage.process.find_binary("true")
self.assertEqual(true_binary is None, False, "true command not found")
dev_null = open(os.devnull, "wb")
playground = ResolverPlayground(ebuilds=ebuilds)
try:
QueryCommand._db = playground.trees
root_config = playground.trees[playground.eroot]["root_config"]
portdb = root_config.trees["porttree"].dbapi
settings = portage.config(clone=playground.settings)
if "__PORTAGE_TEST_HARDLINK_LOCKS" in os.environ:
settings["__PORTAGE_TEST_HARDLINK_LOCKS"] = os.environ[
"__PORTAGE_TEST_HARDLINK_LOCKS"]
settings.backup_changes("__PORTAGE_TEST_HARDLINK_LOCKS")
settings.features.add("noauto")
settings.features.add("test")
settings["PORTAGE_PYTHON"] = portage._python_interpreter
settings["PORTAGE_QUIET"] = "1"
settings["PYTHONDONTWRITEBYTECODE"] = os.environ.get(
"PYTHONDONTWRITEBYTECODE", "")
fake_bin = os.path.join(settings["EPREFIX"], "bin")
portage.util.ensure_dirs(fake_bin)
for x in true_symlinks:
os.symlink(true_binary, os.path.join(fake_bin, x))
settings["__PORTAGE_TEST_PATH_OVERRIDE"] = fake_bin
settings.backup_changes("__PORTAGE_TEST_PATH_OVERRIDE")
cpv = "app-misct/foo-1"
metadata = dict(
zip(Package.metadata_keys,
portdb.aux_get(cpv, Package.metadata_keys)))
pkg = Package(
built=False,
cpv=cpv,
installed=False,
metadata=metadata,
root_config=root_config,
type_name="ebuild",
)
settings.setcpv(pkg)
ebuildpath = portdb.findname(cpv)
self.assertNotEqual(ebuildpath, None)
for phase in (
"info",
"nofetch",
"pretend",
"setup",
"unpack",
"prepare",
"configure",
"compile",
"test",
"install",
"qmerge",
"clean",
"merge",
):
pr, pw = os.pipe()
producer = DoebuildProcess(
doebuild_pargs=(ebuildpath, phase),
doebuild_kwargs={
"settings": settings,
"mydbapi": portdb,
"tree": "porttree",
"vartree": root_config.trees["vartree"],
"fd_pipes": {
1: dev_null.fileno(),
2: dev_null.fileno(),
output_fd: pw,
},
"prev_mtimes": {},
},
)
consumer = PipeReader(input_files={"producer": pr})
task_scheduler = TaskScheduler(iter([producer, consumer]),
max_jobs=2)
try:
task_scheduler.start()
finally:
# PipeReader closes pr
os.close(pw)
task_scheduler.wait()
output = portage._unicode_decode(
consumer.getvalue()).rstrip("\n")
if task_scheduler.returncode != os.EX_OK:
portage.writemsg(output, noiselevel=-1)
self.assertEqual(task_scheduler.returncode, os.EX_OK)
if phase not in ("clean", "merge", "qmerge"):
self.assertEqual(phase, output)
finally:
dev_null.close()
playground.cleanup()
QueryCommand._db = None
def _receive_reply(self, input_fd):
start_time = time.time()
pipe_reader = PipeReader(input_files={"input_fd": input_fd},
scheduler=global_event_loop())
pipe_reader.start()
eof = pipe_reader.poll() is not None
while not eof:
pipe_reader._wait_loop(timeout=self._COMMUNICATE_RETRY_TIMEOUT)
eof = pipe_reader.poll() is not None
if not eof:
if self._daemon_is_alive():
self._timeout_retry_msg(
start_time, portage.localization._('during read'))
else:
pipe_reader.cancel()
self._no_daemon_msg()
return 2
buf = pipe_reader.getvalue()
retval = 2
if not buf:
portage.util.writemsg_level(
"ebuild-ipc: %s\n" % \
(portage.localization._('read failed'),),
level=logging.ERROR, noiselevel=-1)
else:
try:
reply = pickle.loads(buf)
except SystemExit:
raise
except Exception as e:
# The pickle module can raise practically
# any exception when given corrupt data.
portage.util.writemsg_level("ebuild-ipc: %s\n" % (e, ),
level=logging.ERROR,
noiselevel=-1)
else:
(out, err, retval) = reply
if out:
portage.util.writemsg_stdout(out, noiselevel=-1)
if err:
portage.util.writemsg(err, noiselevel=-1)
return retval
class AsyncFunction(ForkProcess):
"""
Execute a function call in a fork, and retrieve the function
return value via pickling/unpickling, accessible as the
"result" attribute after the forked process has exited.
"""
# NOTE: This class overrides the meaning of the SpawnProcess 'args'
# attribute, and uses it to hold the positional arguments for the
# 'target' function.
__slots__ = (
"kwargs",
"result",
"target",
"_async_func_reader",
"_async_func_reader_pw",
)
def _start(self):
pr, pw = os.pipe()
self.fd_pipes = {} if self.fd_pipes is None else self.fd_pipes
self.fd_pipes[pw] = pw
self._async_func_reader_pw = pw
self._async_func_reader = PipeReader(
input_files={"input": pr}, scheduler=self.scheduler
)
self._async_func_reader.addExitListener(self._async_func_reader_exit)
self._async_func_reader.start()
ForkProcess._start(self)
os.close(pw)
def _run(self):
try:
result = self.target(*(self.args or []), **(self.kwargs or {}))
os.write(self._async_func_reader_pw, pickle.dumps(result))
except Exception:
traceback.print_exc()
return 1
return os.EX_OK
def _async_waitpid(self):
# Ignore this event, since we want to ensure that we exit
# only after _async_func_reader_exit has reached EOF.
if self._async_func_reader is None:
ForkProcess._async_waitpid(self)
def _async_func_reader_exit(self, pipe_reader):
try:
self.result = pickle.loads(pipe_reader.getvalue())
except Exception:
# The child process will have printed a traceback in this case,
# and returned an unsuccessful returncode.
pass
self._async_func_reader = None
if self.returncode is None:
self._async_waitpid()
else:
self._unregister()
self._async_wait()
def _unregister(self):
ForkProcess._unregister(self)
pipe_reader = self._async_func_reader
if pipe_reader is not None:
self._async_func_reader = None
pipe_reader.removeExitListener(self._async_func_reader_exit)
pipe_reader.cancel()
