121 lines
2.7 KiB
Python
121 lines
2.7 KiB
Python
'''
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That "native" runtime-hackin toolset better be dang useful!
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Verify the funtion of a variety of "developer-experience" tools we
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offer from the `.devx` sub-pkg:
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- use of the lovely `stackscope` for dumping actor `trio`-task trees
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during operation and hangs.
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TODO:
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- demonstration of `CallerInfo` call stack frame filtering such that
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for logging and REPL purposes a user sees exactly the layers needed
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when debugging a problem inside the stack vs. in their app.
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'''
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import os
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import signal
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from .conftest import (
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expect,
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assert_before,
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# in_prompt_msg,
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)
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def test_shield_pause(
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spawn,
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):
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'''
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Verify the `tractor.pause()/.post_mortem()` API works inside an
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already cancelled `trio.CancelScope` and that you can step to the
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next checkpoint wherein the cancelled will get raised.
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'''
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child = spawn(
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'shield_hang_in_sub'
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)
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expect(
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child,
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'Yo my child hanging..?',
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)
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assert_before(
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child,
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[
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'Entering shield sleep..',
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'Enabling trace-trees on `SIGUSR1` since `stackscope` is installed @',
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]
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)
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print(
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'Sending SIGUSR1 to see a tree-trace!',
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)
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os.kill(
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child.pid,
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signal.SIGUSR1,
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)
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expect(
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child,
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# end-of-tree delimiter
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"------ \('root', ",
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)
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assert_before(
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child,
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[
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'Trying to dump `stackscope` tree..',
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'Dumping `stackscope` tree for actor',
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"('root'", # uid line
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# parent block point (non-shielded)
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'await trio.sleep_forever() # in root',
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]
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)
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# expect(
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# child,
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# # relay to the sub should be reported
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# 'Relaying `SIGUSR1`[10] to sub-actor',
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# )
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expect(
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child,
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# end-of-tree delimiter
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"------ \('hanger', ",
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)
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assert_before(
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child,
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[
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# relay to the sub should be reported
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'Relaying `SIGUSR1`[10] to sub-actor',
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"('hanger'", # uid line
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# hanger LOC where it's shield-halted
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'await trio.sleep_forever() # in subactor',
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]
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)
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# breakpoint()
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# simulate the user sending a ctl-c to the hanging program.
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# this should result in the terminator kicking in since
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# the sub is shield blocking and can't respond to SIGINT.
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os.kill(
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child.pid,
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signal.SIGINT,
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)
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expect(
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child,
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'Shutting down actor runtime',
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timeout=6,
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)
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assert_before(
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child,
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[
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'raise KeyboardInterrupt',
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# 'Shutting down actor runtime',
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'#T-800 deployed to collect zombie B0',
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"'--uid', \"('hanger',",
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]
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)
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