def unpack_directory_if_needed(path: str) -> str:
"""
If path is a tarball, unpack it. If path doesn't exist but there is a
tarball with the same name, unpack it.
Parameters
----------
path : str
Path to directory or tarball.
Returns
-------
str
Path to directory.
Raises
------
clgen.InternalError
If unable to extract archive.
"""
if fs.isdir(path):
return path
if fs.isfile(path) and path.endswith(".tar.bz2"):
log.info("unpacking '{}'".format(path))
tar.unpack_archive(path)
return re.sub(r'.tar.bz2$', '', path)
if fs.isfile(path + ".tar.bz2"):
log.info("unpacking '{}'".format(path + ".tar.bz2"))
tar.unpack_archive(path + ".tar.bz2")
return path
raise clgen.InternalError("cannot interpret archive '{path}'"
.format(**vars()))
def print_bytecode_features(db_path: str) -> None:
"""
Print Bytecode features.
Arguments:
db_path: Path to dataset.
"""
db = dbutil.connect(db_path)
c = db.cursor()
c.execute('SELECT sha,contents FROM Bytecodes')
query = c.fetchall()
uniq_features = set()
for row in query:
sha, contents = row
features = bytecode_features(contents)
# Add the table key
features['sha'] = sha
for key in features.keys():
uniq_features.add(key)
log.info('Features:')
for feature in uniq_features:
log.info(' ', feature)
def unpack_directory_if_needed(path: str) -> str:
"""
If path is a tarball, unpack it. If path doesn't exist but there is a
tarball with the same name, unpack it.
Arguments:
path (str): Path to directory or tarball.
Returns:
str: Path to directory.
"""
if fs.isdir(path):
return path
if fs.isfile(path) and path.endswith(".tar.bz2"):
log.info("unpacking '{}'".format(path))
clgen.unpack_archive(path)
return re.sub(r'.tar.bz2$', '', path)
if fs.isfile(path + ".tar.bz2"):
log.info("unpacking '{}'".format(path + ".tar.bz2"))
clgen.unpack_archive(path + ".tar.bz2")
return path
return path
def preprocess_inplace(paths: str,
max_num_workers: int = cpu_count(),
attempt: int = 1) -> None:
"""
Preprocess a list of files in place.
Arguments:
paths (str[]): List of paths.
max_num_workers (int, optional): Number of processes to spawn.
"""
if attempt >= MAX_OS_RETRIES:
raise clgen.InternalError("Failed to process files")
num_workers = min(len(paths), max_num_workers)
try:
log.info('spawned', num_workers, 'worker threads to process',
len(paths), 'files ...')
with clgen.terminating(Pool(num_workers)) as pool:
pool.map(_preprocess_inplace_worker, paths)
except OSError as e:
log.error(e)
# Try again with fewer threads.
# See: https://github.com/ChrisCummins/clgen/issues/64
max_num_workers = max(int(max_num_workers / 2), 1)
preprocess_inplace(paths,
max_num_workers=max_num_workers,
attempt=attempt + 1)
def remove_bad_preprocessed(db_path: str) -> None:
"""
Remove all ugly and bad contents from PreprocessedFiles table.
Parameters
----------
db_path : str
Dataset.
"""
original_size = fs.du(db_path, human_readable=False)
original_size_human_readable = fs.du(db_path, human_readable=True)
log.info("vacuuming", original_size_human_readable, "database")
sys.stdout.flush()
# Remove contents from bad or ugly preprocessed files.
db = connect(db_path)
c = db.cursor()
c.execute("UPDATE PreprocessedFiles SET contents='[DELETED]' "
"WHERE status=1 OR status=2")
db.commit()
c.close()
db.close()
db = connect(db_path)
c = db.cursor()
c.execute("VACUUM")
db.commit()
c.close()
new_size = fs.du(db_path, human_readable=False)
new_size_human_readable = fs.du(db_path, human_readable=True)
reduction_ratio = (1 - (new_size / original_size)) * 100
log.info("done. new size {}. ({:.0f}% reduction)"
.format(new_size_human_readable, reduction_ratio), sep=".")
def _main(infile: TextIO, vocab: str, size: bool) -> None:
atoms = corpus.atomize(infile.read(), vocab=vocab)
if size:
log.info("size:", len(atoms))
else:
log.info('\n'.join(atoms))
def sample(self, model: clgen.Model) -> None:
"""
Sample CLgen model.
Parameters
----------
model : clgen.Model
CLgen model.
"""
cache = self.cache(model)
# create samples database if it doesn't exist
if not cache.get("kernels.db"):
tmp_kernels_db = cache.keypath("kernels.tmp.db")
dbutil.create_db(tmp_kernels_db)
cache["kernels.db"] = tmp_kernels_db
# producer-consumer queue
queue = Queue(maxsize=128)
log.info("sampling", self)
sampler = SampleProducer(model, self.start_text, queue,
**self.kernel_opts)
sampler.start()
consumer = SampleConsumer(cache["kernels.db"], sampler, self, cache,
queue, **self.sampler_opts)
consumer.start()
sampler.join()
consumer.join()
clgen.explore(cache["kernels.db"])
def merge(outpath, inpaths=None):
"""
Merge kernel datasets.
"""
from clgen import explore
if not fs.isfile(outpath):
create_db(outpath)
log.info("created", outpath)
db = connect(outpath)
if not inpaths:
inpaths = get_all_sampler_datasets()
for inpath in inpaths:
log.info("merging from", inpath)
c = db.cursor()
c.execute("ATTACH '{}' AS rhs".format(inpath))
c.execute("INSERT OR IGNORE INTO ContentFiles "
"SELECT * FROM rhs.ContentFiles")
c.execute("INSERT OR IGNORE INTO PreprocessedFiles "
"SELECT * FROM rhs.PreprocessedFiles")
db.commit()
c.execute("DETACH rhs")
c.close()
explore.explore(outpath)
def _init_error(err: Exception, files_to_rm: List[str]=[]) -> None:
""" tidy up in case of error """
log.error("corpus creation failed. Deleting corpus files")
for path in files_to_rm:
if fs.exists(path):
log.info("removing", path)
fs.rm(path)
raise err
def _init_error(err: Exception) -> None:
""" tidy up in case of error """
log.error("corpus creation failed. Deleting corpus files")
paths = [
fs.path(self.contentcache.path, "kernels.db"),
fs.path(self.cache.path, "corpus.txt"),
fs.path(self.cache.path, "tensor.npy"),
fs.path(self.cache.path, "atomizer.pkl")
]
for path in paths:
if fs.exists(path):
log.info("removing", path)
fs.rm(path)
raise err
def preprocess_inplace(paths: List[str],
max_num_workers: int = cpu_count(),
max_attempts: int = 100,
attempt: int = 1) -> None:
"""
Preprocess a list of files in place.
Parameters
----------
paths : List[str]
List of paths.
max_num_workers : int, optional
Number of processes to spawn.
max_attempts : int, optional
In case of an OSError or TimeoutError, this number of attempts will be
made.
"""
if attempt > max_attempts:
raise clgen.InternalError(
f"Failed to process files after {max_attempts} attempts")
elif attempt > 1:
log.warning("preprocess attempt #.", attempt)
num_workers = min(len(paths), max_num_workers)
try:
log.info('spawned', num_workers, 'worker threads to process',
len(paths), 'files ...')
with clgen.terminating(Pool(num_workers)) as pool:
pool.map(_preprocess_inplace_worker, paths)
except (OSError, TimeoutError) as e:
log.error(e)
# Try again with fewer threads.
# See: https://github.com/ChrisCummins/clgen/issues/64
max_num_workers = max(int(max_num_workers / 2), 1)
preprocess_inplace(paths,
max_num_workers=max_num_workers,
attempt=attempt + 1,
max_attempts=max_attempts)
def _main() -> None:
cache = clgen.cachepath()
log.warning("Not Implemented: refresh corpuses")
if fs.isdir(cache, "model"):
cached_modeldirs = fs.ls(fs.path(cache, "model"), abspaths=True)
for cached_modeldir in cached_modeldirs:
cached_model_id = fs.basename(cached_modeldir)
cached_meta = jsonutil.read_file(fs.path(cached_modeldir, "META"))
model = clgen.Model.from_json(cached_meta)
if cached_model_id != model.hash:
log.info(cached_model_id, '->', model.hash)
if fs.isdir(model.cache.path):
log.fatal("cache conflict", file=sys.stderr)
fs.mv(cached_modeldir, model.cache.path)
log.warning("Not Implemented: refresh samplers")
def sample(self, model: Model, quiet: bool = False) -> None:
"""
Sample CLgen model.
Arguments:
model (Model): CLgen model.
"""
cache = self.cache(model)
# create samples database if it doesn't exist
if not cache["kernels.db"]:
dbutil.create_db(fs.path(cache.path, "kernels.tmp.db"))
cache["kernels.db"] = fs.path(cache.path, "kernels.tmp.db")
batch_i = 0
while True:
# stop if we have enough kernels
has_max_kernels = self.max_kernels >= 0
num_good_kernels = dbutil.num_good_kernels(cache["kernels.db"])
if has_max_kernels and num_good_kernels >= self.max_kernels:
return
# stop if we've done enough batches
has_max_batches = self.max_batches >= 0
if has_max_batches and batch_i >= self.max_batches:
return
batch_i += 1
print("sample batch", batch_i, "...")
self.sample_iteration(model, quiet=quiet)
print()
explore(self.cache(model)["kernels.db"])
log.info("samples database:", cache["kernels.db"])
def preprocess_file(path: str, inplace: bool = False) -> None:
"""
Preprocess a file.
Prints output to stdout by default. If preprocessing fails, this function
exits.
Arguments:
path (str): String path to file.
inplace (bool, optional): If True, overwrite input file.
"""
with open(path) as infile:
contents = infile.read()
try:
out = preprocess(contents)
if inplace:
with open(path, 'w') as outfile:
outfile.write(out)
else:
log.info('preprocess', out)
except BadCodeException as e:
log.fatal(e, ret=1)
except UglyCodeException as e:
log.fatal(e, ret=2)
def _dump_db(db, out_path: str, gh: bool=False, fileid: bool=False,
reverse: bool=False, input_samples: bool=False, status: int=0,
eof: bool=False, dir: bool=False) -> None:
"""
Dump database contents.
Parameters
----------
db : slite3.Connection
Dataset.
out_path : str
Path to output.
gh : bool, optional
Dataset is GitHub.
fileid : bool, optional
Include file IDs.
reverse : bool, optional
Reverse ordering of output.
input_samples : bool, optional
If True, use un-preprocessed files.
status : int, optional
Filter preprocess status.
eof : bool, optional
Include EOF separators.
dir : bool, optional
Write output to directory.
"""
log.info('writing corpus', out_path, '...')
order = 'ASC' if reverse else 'DESC'
c = db.cursor()
# Query components
table = 'ContentFiles' if input_samples else 'PreprocessedFiles'
select = 'SELECT {}.id,{}.contents'.format(table, table, table)
if input_samples:
qualifier = ''
else:
qualifier = 'WHERE {}.status={}'.format(table, status)
if gh:
table += (' LEFT JOIN ContentMeta ON {}.id=ContentMeta.id'
' LEFT JOIN Repositories ON '
'ContentMeta.repo_url=Repositories.url'
.format(table))
orderby = 'Repositories.stars'
else:
orderby = 'LC_col(contents)'
query = ('{select} FROM {table} {qualifier} ORDER BY {orderby} {order}'
.format(select=select, table=table, qualifier=qualifier,
orderby=orderby, order=order))
c.execute(query)
rows = c.fetchall()
if dir:
log.info('writing to directory ', out_path, '/', sep='')
if not os.path.exists(out_path):
os.makedirs(out_path)
for row in rows:
id, contents = row
path = os.path.join(out_path, kid_to_path(id) + '.cl')
with open(path, 'w') as out:
out.write(contents)
else:
log.info('writing file', out_path)
with open(out_path, 'wb') as out:
for row in rows:
id, contents = row
if fileid: # Print file ID
out.write('/* ID: {} */\n\n'.format(id).encode('utf-8'))
out.write(contents.encode('utf-8'))
if eof: # Print EOF token
out.write('\n/* EOF */\n\n'.encode('utf-8'))
else:
out.write('\n\n'.encode('utf-8'))
def train(self, quiet: bool = False) -> None:
"""
Train model.
"""
tf = self._init_tensorflow(infer=False)
# training options
learning_rate = self.train_opts["learning_rate"]
decay_rate = self.train_opts["lr_decary_rate"]
checkpoint_path = fs.path(self.cache.path, "model.ckpt")
# resume from prior checkpoint
ckpt_path, ckpt_paths = None, None
if self.checkpoint_path:
# check if all necessary files exist
assert (fs.isdir(self.checkpoint_path))
ckpt = tf.train.get_checkpoint_state(self.checkpoint_path)
assert (ckpt)
assert (ckpt.model_checkpoint_path)
ckpt_path, ckpt_paths = self._get_params_path(ckpt)
with tf.Session() as sess:
tf.global_variables_initializer().run()
# keep all checkpoints
saver = tf.train.Saver(tf.global_variables(), max_to_keep=100)
# restore model from closest checkpoint
if ckpt_path:
log.debug("restoring", ckpt_path)
saver.restore(sess, ckpt_path)
log.info("restored checkpoint {}".format(ckpt_path))
# make sure we don't lose track of other checkpoints
if ckpt_paths:
saver.recover_last_checkpoints(ckpt_paths)
start_batch = sess.run(self.epoch) * self.corpus.num_batches
batch_count = 0
total_elapsed = 0
total_atomize = 0
total_checkpoint, avg_checkpoint = 0, 0
eta_d, eta_h, eta_m = 0, 0, 0
for e in range(sess.run(self.epoch) + 1, self.epochs + 1):
if quiet:
log.info("epoch", e, "of", self.epochs + 1)
# decay and set learning rate
new_learning_rate = learning_rate * (
(float(100 - decay_rate) / 100.0)**(e - 1))
sess.run(tf.assign(self.learning_rate, new_learning_rate))
sess.run(tf.assign(self.epoch, e))
time_start = time.time()
self.corpus.create_batches()
total_atomize += time.time() - time_start
avg_atomize = total_atomize / e
state = sess.run(self.initial_state)
for b in range(self.corpus.num_batches):
time_start = time.time()
batch_count += 1
x, y = self.corpus.next_batch()
feed = {self.input_data: x, self.targets: y}
for i, (c, h) in enumerate(self.initial_state):
feed[c] = state[i].c
feed[h] = state[i].h
train_loss, state, _ = sess.run(
[self.cost, self.final_state, self.train_op], feed)
batch_num = (e - 1) * self.corpus.num_batches + b
max_batch = self.epochs * self.corpus.num_batches
progress = float((batch_num + 1 - start_batch) /
(max_batch - start_batch))
time_end = time.time()
elapsed = time_end - time_start
if not quiet:
total_elapsed += elapsed
avg_elapsed = total_elapsed / batch_count
remaining_time = (
(max_batch - batch_count) * avg_elapsed
+ # batches
(e - self.epochs) * avg_atomize + # atomizings
(e - self.epochs) * avg_checkpoint) # checkpoints
eta_h, eta_m = divmod(remaining_time / 60, 60)
eta_d, eta_h = divmod(eta_h, 24)
print("\r\033[K"
"{progress:3.1f}% | "
"{size}x{layers}x{max_epoch} {model} | "
"epoch={epoch_num}/{max_epoch} | "
"batch={batch_num}/{max_batch} | "
"lr={lr:.5f} | "
"loss={tloss:.3f} | "
"t1={time_atomize:.3f}s "
"t2={time_batch:.3f}s "
"t3={time_checkpoint:.3f}s | "
"eta={eta_d}d{eta_h}h{eta_m:02d}m".format(
size=self.rnn_size,
layers=self.num_layers,
model=self.model_type.upper(),
progress=progress * 100,
epoch_num=e,
max_epoch=self.epochs,
batch_num=b + 1,
max_batch=self.corpus.num_batches,
lr=new_learning_rate,
tloss=train_loss,
time_atomize=avg_atomize,
time_batch=avg_elapsed,
time_checkpoint=avg_checkpoint,
eta_d=int(eta_d),
eta_h=int(eta_h),
eta_m=int(eta_m)),
end="")
save = self.opts["train_opts"]["intermediate_checkpoints"]
save |= e == self.epochs # last epoch
if save:
if not quiet:
print()
time_start = time.time()
saver.save(sess, checkpoint_path, global_step=batch_num)
total_checkpoint += time.time() - time_start
avg_checkpoint = total_checkpoint / e
log.info("model saved to {}".format(checkpoint_path))
def _main(model_file: TextIO) -> None:
model_json = jsonutil.loads(model_file.read())
model = clgen.Model.from_json(model_json)
model.train()
log.info("done.")
def _main(db_file: BinaryIO, paths: List[Path]) -> None:
clgen.fetch(db_file.name, paths)
log.info("done.")
def _locked_train(self) -> 'Model':
tf = self._init_tensorflow(infer=False)
# training options
learning_rate = self.train_opts["learning_rate"]
decay_rate = self.train_opts["lr_decay_rate"]
# resume from prior checkpoint
ckpt_path, ckpt_paths = None, None
if self.checkpoint_path:
# check that all necessary files exist
assert(fs.isdir(self.checkpoint_path))
ckpt = tf.train.get_checkpoint_state(self.checkpoint_path)
assert(ckpt)
assert(ckpt.model_checkpoint_path)
ckpt_path, ckpt_paths = self._get_params_path(ckpt)
with tf.Session() as sess:
tf.global_variables_initializer().run()
# keep all checkpoints
saver = tf.train.Saver(tf.global_variables(), max_to_keep=100)
# restore model from closest checkpoint
if ckpt_path:
log.debug("restoring", ckpt_path)
saver.restore(sess, ckpt_path)
log.verbose("restored checkpoint {}".format(ckpt_path))
# make sure we don't lose track of other checkpoints
if ckpt_paths:
saver.recover_last_checkpoints(ckpt_paths)
coord = tf.train.Coordinator()
self.corpus.create_batches()
threading.Thread(target=self.enqueue_x, args=(coord, sess)).start()
max_batch = self.epochs * self.corpus.num_batches
# progress bar
bar = progressbar.ProgressBar(max_value=max_batch)
if sess.run(self.epoch) != self.epochs:
log.info("training", self)
for e in range(sess.run(self.epoch) + 1, self.epochs + 1):
epoch_start = time()
# decay and set learning rate
new_learning_rate = learning_rate * (
(float(100 - decay_rate) / 100.0) ** (e - 1))
sess.run(tf.assign(self.learning_rate, new_learning_rate))
sess.run(tf.assign(self.epoch, e))
for b in range(self.corpus.num_batches):
train_cost, _, state, _ = sess.run([self.cost, self.KL_cost, self.final_state, self.train_op])
# update progress bar
batch_num = (e - 1) * self.corpus.num_batches + b
bar.update(batch_num)
save = self.opts["train_opts"]["intermediate_checkpoints"]
save |= e == self.epochs # always save on last epoch
if save:
saver.save(sess, self.cache.keypath("model.ckpt"),
global_step=batch_num)
next_checkpoint = e * self.corpus.num_batches + b
max_epoch = self.epochs
log.verbose("\n{self} epoch {e} / {max_epoch}. "
"next checkpoint at batch {next_checkpoint}"
.format(**vars()))
# update training time
epoch_duration = time() - epoch_start
self.stats["epoch_costs"].append(float(train_cost))
self.stats["epoch_times"].append(epoch_duration)
self.stats["epoch_batches"].append(batch_num + 1)
self._flush_meta()
coord.request_stop()
return self
def preprocess_contentfiles(db_path: str,
max_num_workers: int = cpu_count(),
attempt: int = 1) -> None:
"""
Preprocess OpenCL dataset.
Arguments:
db_path (str): OpenCL kernels dataset.
max_num_workers (int, optional): Number of processes to spawn.
"""
def _finalize(db_path, cache):
"""Tidy up after worker threads finish"""
log.debug("worker finalize")
db = dbutil.connect(db_path)
c = db.cursor()
# import results from worker threads
for outpath in fs.ls(cache.path, abspaths=True):
with open(outpath) as infile:
for line in infile:
c.execute(
'INSERT OR REPLACE INTO PreprocessedFiles '
'VALUES(?,?,?)', json.loads(line))
# write changes to database and remove cache
db.commit()
db.close()
cache.empty()
if attempt >= MAX_OS_RETRIES:
raise clgen.InternalError("failed to preprocess files")
num_contentfiles = dbutil.num_rows_in(db_path, 'ContentFiles')
num_preprocessedfiles = dbutil.num_rows_in(db_path, 'PreprocessedFiles')
log.info("{n} ({r:.1%}) files need preprocessing".format(
n=num_contentfiles - num_preprocessedfiles,
r=(num_contentfiles - num_preprocessedfiles) / num_contentfiles))
# split into mulitple jobs of a maximum size
jobsize = min(512, num_contentfiles)
numjobs = math.ceil(num_contentfiles / jobsize)
for j, offset in enumerate(range(0, num_contentfiles, jobsize)):
num_preprocessedfiles = dbutil.num_rows_in(db_path,
'PreprocessedFiles')
num_workers = min(num_contentfiles, max_num_workers)
files_per_worker = math.ceil(jobsize / num_workers)
# temporary cache used for worker thread results
cache = Cache("{pid}.preprocess".format(pid=os.getpid()))
# each worker thread receives a range of database indices to preprocess,
# and a JSON file to write results into
jobs = [{
"db_in":
db_path,
"db_index_range":
(offset + i * files_per_worker,
offset + i * files_per_worker + files_per_worker),
"json_out":
fs.path(cache.path, "{i}.json".format(i=i))
} for i in range(num_workers)]
# spool up worker threads then finalize
log.info('job {j} of {numjobs}: spawning {num_workers} worker threads '
'to process {jobsize} files ...'.format(**vars()))
try:
with clgen.terminating(Pool(num_workers)) as pool:
pool.map(_preprocess_db_worker, jobs)
except OSError as e:
_finalize(db_path, cache)
log.error(e)
# Try again with fewer threads.
# See: https://github.com/ChrisCummins/clgen/issues/64
max_num_workers = max(int(max_num_workers / 2), 1)
preprocess_contentfiles(db_path,
max_num_workers=max_num_workers,
attempt=attempt + 1)
except Exception as e:
_finalize(db_path, cache)
raise e
_finalize(db_path, cache)
def _preprocess_db(db_path: str,
max_num_workers: int = cpu_count(),
max_attempts: int = 100,
attempt: int = 1,
**preprocess_opts) -> None:
"""
Preprocess OpenCL dataset.
Parameters
----------
db_path : str
OpenCL kernels dataset.
max_num_workers : int, optional
Number of processes to spawn.
max_attempts : int, optional
In case of an OSError or TimeoutError, this number of attempts will be
made.
"""
if attempt > max_attempts:
raise clgen.InternalError(
f"failed to preprocess files after {max_attempts} attempts")
log.verbose("determining jobs")
contentfiles = set(dbutil.kernel_ids(db_path, "ContentFiles"))
preprocessedfiles = set(dbutil.kernel_ids(db_path, "PreprocessedFiles"))
ncontentfiles = len(contentfiles)
npreprocessedfiles = len(preprocessedfiles)
todo = contentfiles - preprocessedfiles
ntodo = len(todo)
# check we have something to do
if not ntodo:
return
todo_ratio = ntodo / ncontentfiles
log.info("{ntodo} ({todo_ratio:.1%}) samples need preprocessing".format(
**vars()))
log.verbose("creating jobs")
# Determine if we need to inline kernels when creating jobs
db = sqlite3.connect(db_path)
c = db.cursor()
c.execute(
"SELECT name FROM sqlite_master WHERE type='table' AND name='ContentMeta';"
)
meta_table = c.fetchone()
c.close()
db.close()
if meta_table:
get_kernel = lambda kid: dbutil.get_inlined_kernel(
db_path, kid, lang=preprocess_opts["lang"])
else:
get_kernel = lambda kid: dbutil.get_kernel(
db_path, kid, table="ContentFiles")
# create jobs
jobs = [{
"id": kid,
"src": get_kernel(kid),
"preprocess_opts": preprocess_opts,
} for kid in todo]
random.shuffle(jobs)
# split size
worker_njobs = math.ceil(ntodo / max_num_workers)
# producer-consumer queue
queue = Queue(maxsize=128)
log.verbose(f"assigning {ntodo} jobs to {max_num_workers} threads")
try:
# our worker threads. these busy little bees will do the heavy lifting
# of preprocessing the contentfiles, pushing their results onto
# the queue
producers = [
PreprocessWorker(jobs[i:i + worker_njobs], queue)
for i in range(0, ntodo, worker_njobs)
]
# fly, my pretties, fly!
for producer in producers:
producer.start()
# consume the results from the worker threads from the main thread
for i in progressbar.ProgressBar()(range(ntodo)):
# pull a fresh result from the queue (block if necessary)
try:
result = queue.get(timeout=90)
except QueueEmpty as e:
raise TimeoutError('failed to fetch result after 90 seconds. '
'something went wrong') from e
# insert result into database
db = dbutil.connect(db_path)
c = db.cursor()
c.execute("INSERT INTO PreprocessedFiles VALUES(?,?,?)",
(result["id"], result["status"], result["contents"]))
c.close()
db.commit()
db.close()
for producer in producers:
producer.join()
except (OSError, TimeoutError) as e:
log.error(e)
if attempt > 2 and not i:
log.warning("no progress has been made since previous attempt. "
"I'm not going to try another attempt.")
return
# Try again with fewer threads.
# See: https://github.com/ChrisCummins/clgen/issues/64
max_num_workers = max(int(max_num_workers / 2), 1)
_preprocess_db(db_path,
max_num_workers=max_num_workers,
attempt=attempt + 1,
max_attempts=max_attempts,
**preprocess_opts)
def _preprocess_inplace_worker(path: str) -> None:
"""worker function for preprocess_inplace()"""
log.info('preprocess', path)
preprocess_file(path, inplace=True)
