circuitpython/tests/thread/thread_shared1.py

# test capability for threads to access a shared immutable data structure
#
# MIT license; Copyright (c) 2016 Damien P. George on behalf of Pycom Ltd

import _thread


def foo(i):
    pass


def thread_entry(n, tup):
    for i in tup:
        foo(i)
    with lock:
        global n_finished
        n_finished += 1


lock = _thread.allocate_lock()
n_thread = 2
n_finished = 0

# the shared data structure
tup = (1, 2, 3, 4)

# spawn threads
for i in range(n_thread):
    _thread.start_new_thread(thread_entry, (100, tup))

# busy wait for threads to finish
while n_finished < n_thread:
    pass
print(tup)
tests: Add tests for _thread module. Includes functionality and stress tests. 2016-04-19 13:03:26 -04:00			`# test capability for threads to access a shared immutable data structure`
			`#`
			`# MIT license; Copyright (c) 2016 Damien P. George on behalf of Pycom Ltd`

			`import _thread`

tests: Format all Python code with black, except tests in basics subdir. This adds the Python files in the tests/ directory to be formatted with ./tools/codeformat.py. The basics/ subdirectory is excluded for now so we aren't changing too much at once. In a few places `# fmt: off`/`# fmt: on` was used where the code had special formatting for readability or where the test was actually testing the specific formatting. 2020-03-22 22:26:08 -04:00
tests: Add tests for _thread module. Includes functionality and stress tests. 2016-04-19 13:03:26 -04:00			`def foo(i):`
			`pass`

tests: Format all Python code with black, except tests in basics subdir. This adds the Python files in the tests/ directory to be formatted with ./tools/codeformat.py. The basics/ subdirectory is excluded for now so we aren't changing too much at once. In a few places `# fmt: off`/`# fmt: on` was used where the code had special formatting for readability or where the test was actually testing the specific formatting. 2020-03-22 22:26:08 -04:00
tests: Add tests for _thread module. Includes functionality and stress tests. 2016-04-19 13:03:26 -04:00			`def thread_entry(n, tup):`
			`for i in tup:`
			`foo(i)`
tests/thread: Remove need to sleep to wait for completion in some tests. Use a lock and a counter instead, and busy wait for all threads to complete. This makes test run faster and they no longer rely on the time module. 2016-04-21 08:38:22 -04:00			`with lock:`
			`global n_finished`
			`n_finished += 1`
tests: Add tests for _thread module. Includes functionality and stress tests. 2016-04-19 13:03:26 -04:00
tests: Format all Python code with black, except tests in basics subdir. This adds the Python files in the tests/ directory to be formatted with ./tools/codeformat.py. The basics/ subdirectory is excluded for now so we aren't changing too much at once. In a few places `# fmt: off`/`# fmt: on` was used where the code had special formatting for readability or where the test was actually testing the specific formatting. 2020-03-22 22:26:08 -04:00
tests/thread: Remove need to sleep to wait for completion in some tests. Use a lock and a counter instead, and busy wait for all threads to complete. This makes test run faster and they no longer rely on the time module. 2016-04-21 08:38:22 -04:00			`lock = _thread.allocate_lock()`
			`n_thread = 2`
			`n_finished = 0`

			`# the shared data structure`
tests: Add tests for _thread module. Includes functionality and stress tests. 2016-04-19 13:03:26 -04:00			`tup = (1, 2, 3, 4)`

tests/thread: Remove need to sleep to wait for completion in some tests. Use a lock and a counter instead, and busy wait for all threads to complete. This makes test run faster and they no longer rely on the time module. 2016-04-21 08:38:22 -04:00			`# spawn threads`
			`for i in range(n_thread):`
			`_thread.start_new_thread(thread_entry, (100, tup))`

			`# busy wait for threads to finish`
			`while n_finished < n_thread:`
			`pass`
tests: Add tests for _thread module. Includes functionality and stress tests. 2016-04-19 13:03:26 -04:00			`print(tup)`