def f(x):
with Lock('x') as lock:
client = get_client()
assert client.get_metadata('locked') is False
client.set_metadata('locked', True)
sleep(0.05)
assert client.get_metadata('locked') is True
client.set_metadata('locked', False)
def f(x):
with Lock("x") as lock:
client = get_client()
assert client.get_metadata("locked") is False
client.set_metadata("locked", True)
sleep(0.05)
assert client.get_metadata("locked") is True
client.set_metadata("locked", False)
def f(_):
client = get_client()
with MultiLock(names=["x"]):
assert client.get_metadata("locked") is False
client.set_metadata("locked", True)
sleep(0.05)
assert client.get_metadata("locked") is True
client.set_metadata("locked", False)
def f(x):
with Lock('x') as lock:
client = get_client()
assert client.get_metadata('locked') is False
client.set_metadata('locked', True)
sleep(0.05)
assert client.get_metadata('locked') is True
client.set_metadata('locked', False)
def guaranteed_lease_timeout(x, sem):
"""
This function simulates a payload computation with some GIL
locking in the beginning.
To simulate this we will manually disable the refresh callback, i.e.
all leases will eventually timeout. The function will only
release/return once the "Event" is set, i.e. our observer is done.
"""
sem.refresh_leases = False
client = get_client()
with sem:
# This simulates a task which holds the GIL for longer than the
# lease-timeout. This is twice the lease timeout to ensurre that the
# leases are actually timed out
slowidentity(delay=0.2)
assert sem._leases
# Now the GIL is free again, i.e. we enable the callback again
sem.refresh_leases = True
sleep(0.1)
# This is the poormans Event.wait()
while client.get_metadata("release") is not True:
sleep(0.05)
assert sem.get_value() >= 1
return x
