2265d70add
The aim of this commit is to make it so that the existing thread tests can be used to test the _thread module on the rp2 port. The rp2 port only allows up to one thread to be created at a time, and does not have the GIL enabled. The following changes have been made: - run-tests.py skips mutation tests on rp2, because there's no GIL. - run-tests.py skips other tests on rp2 that require more than one thread. - The tests stop trying to start a new thread after there is an OSError, which indicates that the system cannot create more threads. - Some of these tests also now run the test function on the main thread, not just the spawned threads. - In some tests the output printing is adjusted so it's the same regardless of how many threads were spawned. - Some time.sleep(1) are replaced with time.sleep(0) to make the tests run a little faster (finish sooner when the work is done). For the most part the tests are unchanged for existing platforms like esp32 and unix. Signed-off-by: Damien George <damien@micropython.org>
45 lines
853 B
Python
45 lines
853 B
Python
# test capability for threads to access a shared immutable data structure
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#
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# MIT license; Copyright (c) 2016 Damien P. George on behalf of Pycom Ltd
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import _thread
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def foo(i):
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pass
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def thread_entry(n, tup):
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for i in tup:
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foo(i)
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with lock:
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global n_finished
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n_finished += 1
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lock = _thread.allocate_lock()
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n_thread = 0
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n_thread_max = 2
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n_finished = 0
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# the shared data structure
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tup = (1, 2, 3, 4)
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# spawn threads
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for _ in range(n_thread_max):
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try:
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_thread.start_new_thread(thread_entry, (100, tup))
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n_thread += 1
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except OSError:
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# System cannot create a new thead, so stop trying to create them.
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break
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# also run the function on this main thread
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thread_entry(100, tup)
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n_thread += 1
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# busy wait for threads to finish
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while n_finished < n_thread:
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pass
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print(tup)
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