def test_fds(self):
with open("/dev/null") as devnull:
proc = supervise_api.Process(["sh", "-c", "sleep inf"],
fds={0: devnull})
proc.kill()
proc.wait()
proc.close()
def test_fds_unopened(self):
with open("/dev/null") as devnull:
proc = supervise_api.Process(["sh", "-c", "sleep inf"],
fds={
devnull.fileno(): 0,
42: devnull
})
proc.kill()
proc.wait()
proc.close()
def just_run(self, args):
r, w = os.pipe()
try:
proc = supervise_api.Process(args, fds={w: w})
except:
os.close(r)
os.close(w)
raise
os.close(w)
proc.kill()
self.assertEqual(proc.wait().killed_with(), signal.SIGKILL)
proc.close()
# we should get eof because the process should be dead
data = os.read(r, 4096)
self.assertEqual(len(data), 0)
os.close(r)
def test_fds_unopened_noleaks(self):
with tempfile.TemporaryFile() as temp:
with open("/dev/null") as devnull:
proc = supervise_api.Process(
["sh", "-c", "ls -1 /proc/$$/fd; true"],
fds={
devnull.fileno(): 0,
42: devnull,
1: temp
})
sent_fds = self.open_fds.union(set([devnull.fileno(), 42, 1]))
proc.wait()
proc.close()
temp.seek(0)
received_fds = parse_fd_set(temp.read())
self.assertTrue(received_fds.issubset(sent_fds))
def multifork(self, cmd):
# using % here to avoid needing to escape {}
cmd = "{ echo started; %s; }" % (cmd)
started_length = len("started\n") * 5
args = [
"sh", "-c",
"{ %s & %s & } & { %s & %s & } & { { { %s & } & } &} &" %
(cmd, cmd, cmd, cmd, cmd)
]
started, stdout = os.pipe()
try:
exited, w = os.pipe()
except:
os.close(exited)
os.close(w)
raise
try:
proc = supervise_api.Process(args, fds={w: w, 1: stdout})
except:
os.close(started)
os.close(stdout)
os.close(exited)
os.close(w)
raise
os.close(stdout)
os.close(w)
more_length = started_length
while more_length > 0:
more_length -= len(os.read(started, more_length))
proc.kill()
proc.wait()
proc.close()
# we should get eof because the process should be dead
data = os.read(exited, 4096)
self.assertEqual(len(data), 0)
os.close(started)
os.close(exited)
def sh(cmd: List[str],
timeout: Optional[float],
env: Dict[str, str] = None) -> int:
"""Note that env is a set of _updates_ to the environment, not the complete
environment!
"""
# http://catern.com/posts/fork.html
with supervise_api.Process(cmd, env=(env or {})) as proc:
start_time = time.time()
if timeout is None:
return proc.wait()
else:
while time.time() - start_time <= timeout:
try:
time.sleep(0.1)
except RuntimeError:
subprocess.run(["git", "worktree", "prune"])
raise
returncode = proc.poll()
if returncode is not None:
return returncode
log.error("BUILD TIMED OUT!")
return -1 # indicate timeout
def test_flags_no_cloexec(self):
proc = supervise_api.Process(["sh", "-c", "sleep inf"], flags=0)
inheritable = os.get_inheritable(proc.fileno())
proc.close()
self.assertTrue(inheritable)
def test_flags_yes_cloexec(self):
proc = supervise_api.Process(["sh", "-c", "sleep inf"],
flags=os.O_CLOEXEC)
inheritable = os.get_inheritable(proc.fileno())
proc.close()
self.assertFalse(inheritable)
def test_fds_closed_fileno(self):
with open("/dev/null") as devnull:
fdnum = devnull.fileno()
# devnull is closed now
with self.assertRaises(ValueError):
supervise_api.Process(["sh", "-c", "sleep inf"], fds={0: fdnum})
def test_fds_closed(self):
with open("/dev/null") as devnull:
pass
# devnull is closed now
with self.assertRaises(ValueError):
supervise_api.Process(["sh", "-c", "sleep inf"], fds={0: devnull})
def test_executable_not_found(self):
with self.assertRaises(OSError) as cm:
supervise_api.Process(
["supervise_api_nonexistent_executable_aosije"])
self.assertEqual(cm.exception.errno, errno.ENOENT)