52 lines
993 B
Python
52 lines
993 B
Python
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# Ensure that disabling IRQs creates mutual exclusion between threads
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# (also tests nesting of disable_irq across threads)
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import machine
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import time
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import _thread
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if not hasattr(machine, "disable_irq"):
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print("SKIP")
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raise SystemExit
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count = 0
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thread_done = False
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def inc_count():
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global count
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a = machine.disable_irq()
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try:
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count += 1
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i = 0
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while i < 20:
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b = machine.disable_irq()
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try:
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count += 1
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count -= 1
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i += 1
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finally:
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machine.enable_irq(b)
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finally:
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machine.enable_irq(a)
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def inc_count_multiple(times):
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for _ in range(times):
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inc_count()
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def thread_entry(inc_times):
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global thread_done
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inc_count_multiple(inc_times)
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thread_done = True
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_thread.start_new_thread(thread_entry, (1000,))
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inc_count_multiple(1000)
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time.sleep(1)
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print("count", count, thread_done)
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if count == 2000:
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print("PASS")
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