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 parse-bytecode

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thread_qstr1.py

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# test concurrent interning of strings

#

# MIT license; Copyright (c) 2016 Damien P. George on behalf of Pycom Ltd

try:

import utime as time

except ImportError:

import time

import _thread

# function to check the interned string

def check(s, val):

assert type(s) == str

assert int(s) == val

# main thread function

def th(base, n):

for i in range(n):

# this will intern the string and check it

exec("check('%u', %u)" % (base + i, base + i))

with lock:

global n_finished

n_finished += 1

lock = _thread.allocate_lock()

n_thread = 4

n_finished = 0

n_qstr_per_thread = 100 # make 1000 for a more stressful test (uses more heap)

# spawn threads

for i in range(n_thread):

_thread.start_new_thread(th, (i * n_qstr_per_thread, n_qstr_per_thread))

# wait for threads to finish

while n_finished < n_thread:

time.sleep(1)

print('pass')