Iqlusioninc abscissa/v0.5 #169
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CI failed because I pulled out the branch from under it to rebase onto |
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Hmm, actually it looks like there might be a problem with some GCloud thing rather than just the force-pushing 🤔 |
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This is failing because the tracing component is now outputting log information to a test that enforces that the version command only outputs the version string. |
The components are accessed by a lock on application state. When some command calls block_on to enter an async context, it obtained a write lock on the entire application state. This meant that if the application state were accessed later in an async context, a deadlock would occur. Instead the TokioComponent holds an Option<Runtime> now, so that before calling block_on, the caller can .take() the runtime and release the lock. Since we only ever enter an async context once, it's not a problem that the component is then missing its runtime, as once we are inside of a task we can access the runtime.
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I disabled the test because I don't want this to block on combining all of the tracing component configs with the zebrad configs. |
dconnolly
approved these changes
Jan 15, 2020
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| * Disabled pending tracing config rework, so that merging abscissa fixes doesn't block on this |
This was referenced Jan 15, 2020
skyl
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Sep 25, 2024
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Supersedes #155 because I still don't know how to make "edits from maintainers" on GitHub....
This adds a single commit that fixes a deadlock in the
TokioComponent.The components are accessed by a lock on application state. When some command
calls block_on to enter an async context, it obtained a write lock on the
entire application state. This meant that if the application state were
accessed later in an async context, a deadlock would occur. Instead the
TokioComponent holds an Option now, so that before calling block_on,
the caller can .take() the runtime and release the lock. Since we only ever
enter an async context once, it's not a problem that the component is then
missing its runtime, as once we are inside of a task we can access the runtime.