37 lines
861 B
Python
37 lines
861 B
Python
"""Async hello world: runtime runs in background threads, driven from asyncio."""
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import asyncio
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from swactor import Runtime, RuntimeConfig
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async def recv(inbox, timeout=1.0):
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"""Poll an inbox until a message arrives."""
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while timeout > 0:
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msg = inbox.try_recv()
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if msg is not None:
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return msg
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await asyncio.sleep(0.01)
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timeout -= 0.01
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return None
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async def main():
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rt = Runtime(RuntimeConfig(num_threads=2))
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def echo(ctx, msg):
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ctx.send(msg["reply_to"], f"hello, {msg['name']}!")
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addr = rt.spawn(echo)
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inbox = rt.inbox()
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handle = rt.run()
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for name in ["alice", "bob", "charlie"]:
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handle.send(addr, {"name": name, "reply_to": inbox.addr})
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reply = await recv(inbox)
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print(reply)
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handle.shutdown()
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handle.join()
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asyncio.run(main())
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