[New-bugs-announce] [issue27833] Process is locked when try to execute Queue.put() inside

[Guni]

New submission from Guni:

Hello,

When I try to put a long string (I mean longer then 65523 chars) in a queue if the put is inside in Process it's block the process and Process.Join() never execute.

Let's me give an example:
---------------
from multiprocessing import Queue, Process

def getLongString():
	s = ""
	for i in range(1, 65524):
		s += "1"
	return s

def p1(q):
	print('START')
	q.put(getLongString())
	print('END')

q = Queue()

prs1 = Process(target=p1, args=(q,))
prs1.start()
prs1.join()

print('FINISH')
----------------

##############
The result of it 65524 chars will be:
START
END
##############

##############
The result of it 65523 chars will be:
START
END
FINISH
##############

----------
messages: 273426
nosy: Guni
priority: normal
severity: normal
status: open
title: Process is locked when try to execute Queue.put() inside
versions: Python 3.4

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27833>
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