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import sys
from time import sleep
from easyprocess import EasyProcess
from entrypoint2 import entrypoint
from tutil import has_xvnc, worker
from pyvirtualdisplay import Display
# ubuntu 14.04 no displayfd
# ubuntu 16.04 displayfd
# Xephyr leaks shared memory segments until 18.04
# https://gitlab.freedesktop.org/xorg/xserver/-/issues/130
# approximately 4MB/call
def test_race_100_xvfb():
check_n(100, "xvfb")
# TODO: this fails with "Xephyr cannot open host display"
# Xephyr bug?
# def test_race_500_100_xephyr():
# for _ in range(500):
# check_n(100, "xephyr")
if has_xvnc():
def test_race_10_xvnc():
check_n(10, "xvnc")
def check_n(n, backend):
with Display():
ls = []
try:
for i in range(n):
cmd = [
sys.executable,
__file__.rsplit(".", 1)[0] + ".py",
str(i),
backend,
str(n),
"--debug",
]
p = EasyProcess(cmd)
p.start()
ls += [p]
sleep(3)
good_count = 0
rc_ls = []
for p in ls:
p.wait()
if p.return_code == 0:
good_count += 1
rc_ls += [p.return_code]
finally:
for p in ls:
p.stop()
print(rc_ls)
print(good_count)
assert good_count == n
@entrypoint
def main(i, backend, retries):
retries = int(retries)
kwargs = dict()
if backend == "xvnc":
kwargs["rfbport"] = 42000 + 100 * worker() + int(i)
# print("$DISPLAY=%s" % (os.environ.get("DISPLAY")))
d = Display(backend=backend, retries=retries, **kwargs).start()
print(
"my index:%s backend:%s disp:%s retries:%s"
% (
i,
backend,
d.new_display_var,
d._obj._retries_current,
)
)
ok = d.is_alive()
d.stop()
assert ok
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