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#! /usr/bin/env python3
#
# Copyright (C) 2020 Joshua Watt <JPEWhacker@gmail.com>
#
# SPDX-License-Identifier: MIT
import argparse
import os
import random
import shutil
import signal
import subprocess
import sys
import time
def try_unlink(path):
try:
os.unlink(path)
except:
pass
def main():
def cleanup():
shutil.rmtree("tmp/cache", ignore_errors=True)
try_unlink("bitbake-cookerdaemon.log")
try_unlink("bitbake.sock")
try_unlink("bitbake.lock")
parser = argparse.ArgumentParser(
description="Bitbake parser torture test",
epilog="""
A torture test for bitbake's parser. Repeatedly interrupts parsing until
bitbake decides to deadlock.
""",
)
args = parser.parse_args()
if not "BUILDDIR" in os.environ:
print(
"'BUILDDIR' not found in the environment. Did you initialize the build environment?"
)
return 1
os.chdir(os.environ["BUILDDIR"])
run_num = 0
while True:
if run_num % 100 == 0:
print("Calibrating wait time...")
cleanup()
start_time = time.monotonic()
r = subprocess.run(["bitbake", "-p"])
max_wait_time = time.monotonic() - start_time
if r.returncode != 0:
print("Calibration run exited with %d" % r.returncode)
return 1
print("Maximum wait time is %f seconds" % max_wait_time)
run_num += 1
wait_time = random.random() * max_wait_time
print("Run #%d" % run_num)
print("Will sleep for %f seconds" % wait_time)
cleanup()
with subprocess.Popen(["bitbake", "-p"]) as proc:
time.sleep(wait_time)
proc.send_signal(signal.SIGINT)
try:
proc.wait(45)
except subprocess.TimeoutExpired:
print("Run #%d: Waited too long. Possible deadlock!" % run_num)
proc.wait()
return 1
if proc.returncode == 0:
print("Exited successfully. Timeout too long?")
else:
print("Exited with %d" % proc.returncode)
if __name__ == "__main__":
sys.exit(main())
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