mirror of https://github.com/nocturn9x/giambio.git
61 lines
2.2 KiB
Python
61 lines
2.2 KiB
Python
import giambio
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from debugger import Debugger
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async def child():
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print("[child] Child spawned!! Sleeping for 5 seconds")
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await giambio.sleep(5)
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print("[child] Had a nice nap!")
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async def child1():
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print("[child 1] Child spawned!! Sleeping for 2 seconds")
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await giambio.sleep(2)
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print("[child 1] Had a nice nap, suiciding now!")
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raise TypeError("rip") # Watch the exception magically propagate!
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async def child2():
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print("[child 2] Child spawned!! Sleeping for 4 seconds")
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await giambio.sleep(4)
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print("[child 2] Had a nice nap!")
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async def child3():
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print("[child 3] Child spawned!! Sleeping for 6 seconds")
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await giambio.sleep(6)
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print("[child 3] Had a nice nap!")
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async def main():
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start = giambio.clock()
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try:
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async with giambio.create_pool() as pool:
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# This pool will run until completion of its
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# tasks and then propagate the exception. This is
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# because exception in nested pools are propagated
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# all the way down first, then the pools above the
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# one that raised the error first wait for their
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# children to complete and only then re-raise the original exception
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await pool.spawn(child)
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await pool.spawn(child)
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print("[main] First 2 children spawned, awaiting completion")
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async with giambio.create_pool() as a_pool:
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await a_pool.spawn(child1)
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print("[main] Third children spawned, prepare for delayed trouble in 2 seconds")
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async with giambio.create_pool() as new_pool:
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# This pool will be cancelled by the exception
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# in the outer pool
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await new_pool.spawn(child2)
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await new_pool.spawn(child3)
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print("[main] Fourth and fifth children spawned")
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except Exception as error:
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# raise
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# Because exceptions just *work*!
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print(f"[main] Exception from child caught! {repr(error)}")
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print(f"[main] Children execution complete in {giambio.clock() - start:.2f} seconds")
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if __name__ == "__main__":
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giambio.run(main, debugger=())
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