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44 lines
4.1 KiB
Markdown
44 lines
4.1 KiB
Markdown
# Outer process guidance
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Inherit the [nearest parent guide](../AGENTS.md). This scope owns the outer application-child and crash-result
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protocol, not miscellaneous helpers. Fallback presentation preserves the original application result. Read
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`Furious/Utility/AppMainProcess.py` with `tests/test_application_process.py`; paths are relative to this
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source tree's root.
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- `Utility` owns the child-side wrapper used by the outer application process and crash/exit translation. It is not a
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miscellaneous helper namespace and does not own application composition, repositories, runtimes, or UI policy.
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- `AppMainProcess` owns one exact Qt application child and one small synchronized crash-log result. Do not add a
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`multiprocessing.Manager` or auxiliary child merely to communicate status, and preserve the platform’s explicit spawn
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behavior.
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- Exception reporting must work before and after application construction. The child runs the supplied application
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factory; the parent must not construct a Qt application to pass across the process boundary. Signal handlers are
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installed only after the factory returns, so pre-construction signals are outside this wrapper's handler coverage.
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Preserve semantic exit codes and original exception/traceback context; crash-log failure is secondary.
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Verify this through a real spawned child: multiprocessing bootstrap can intercept an uncaught factory/run failure
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before `sys.excepthook`. Direct hook tests prove its mapping only, not dispatch from every child failure path;
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compare the actual exit and crash flag before claiming supervision coverage.
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- The parent entry point joins only the child it created and shows the fallback Qt report only for a nonzero result.
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That join follows the GUI session lifetime; it is not a short startup-readiness deadline. Tests must bound their
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own waits and reap their exact child if the fixture fails. A child stuck in cooperative worker cleanup can
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therefore keep the parent join pending; there is no general shutdown watchdog here. Do not turn a test timeout
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into an undocumented production kill policy. Never discover or terminate processes by name, and keep
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normal/source/packaged command-line entry points equivalent.
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Application-child shutdown and each proxy/TUN runtime's release are separate boundaries. The outer join cannot
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establish that an inner service completed cleanup; trace its exact resource owner before changing supervision.
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- Shared crash status is a synchronized Boolean plus the child's semantic exit result; set the flag only after the
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diagnostic file is written successfully. Text may include retained logs plus a traceback, so the Boolean channel
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does not bound the crash file's size or sanitize its contents. Keep crash-write failure separate from the primary
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exit result: the flag proves only that a file write completed, not that the child succeeded or the report can be
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parsed as an exit protocol. Test reporting both with and without a constructed application/log manager.
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Preserve the child's original exit classification even when writing or opening the secondary crash report
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fails; report presentation is not permission to restart the application or its managed runtimes.
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- Fallback presentation runs in the parent after a nonzero child result. It constructs a Qt application for the
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report but does not call the ordinary application `run()` initialization. Treat this as a separate composition
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path in tests, not a second attempt to restore the user's connection. Do not assume plugin, storage, controller,
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or main-window initialization occurred merely because the fallback has a Qt application. Keep its constructor
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dependencies in failure-path tests and preserve the original result when evolving reporting failures.
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- Verify normal return, exception, assertion, signal, pre-application failure, crash-log failure, command dispatch,
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cross-platform spawn, exact child joining, and absence of manager servers or orphaned resources. If this process
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topology changes intentionally, rewrite this guide rather than layering another supervisor over the old one.
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`tests/test_application_process.py` and `tests/test_interface.py` are the contract anchors.
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