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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')
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