ForkedFunc raises EOFError if function exits with status 0 #261
Description
waitfinish() assumes that if the forked child process exited with exitstatus == 0, that _child() ran to completion and wrote out the retval. This is not true if the function run in the child process hard exited with status 0, e.g. os._exit(0) (or even sys.exit(0)).
I added a new test for this and will submit a PR to fix the issue shortly.
=========================================================== FAILURES ============================================================ __________________________________________________________ test_exit0 ___________________________________________________________ def test_exit0(): def exit0(): os._exit(0) > result = py.process.ForkedFunc(exit0).waitfinish() testing/process/test_forkedfunc.py:40: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ self = <py._process.forkedfunc.ForkedFunc object at 0x7f81dee546d8>, waiter = <built-in function waitpid> def waitfinish(self, waiter=os.waitpid): pid, systemstatus = waiter(self.pid, 0) if systemstatus: if os.WIFSIGNALED(systemstatus): exitstatus = os.WTERMSIG(systemstatus) + 128 else: exitstatus = os.WEXITSTATUS(systemstatus) else: exitstatus = 0 signal = systemstatus & 0x7f if not exitstatus and not signal: retval = self.RETVAL.open('rb') try: retval_data = retval.read() finally: retval.close() > retval = marshal.loads(retval_data) E EOFError: EOF read where object expected