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31 lines
1.2 KiB
Markdown
31 lines
1.2 KiB
Markdown
State Machine
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=============
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A service is bound to a state machine that is in one of ten states. For
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run/tasks there is an additional end state called `DONE`. All processes
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managed by Finit start in the `HALTED` state. The image shows how both
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conditions and commands drive the machine.
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The current state depends on the two following conditions:
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* `E`: Service enabled. In order for `E` to be satisfied, the service
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must be allowed to run in the current runlevel and not be stopped.
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A service may be stopped, or blocked, for several reasons:
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- The user has manually stopped the service using `initctl stop NAME`
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- The program exits immediately. I.e. keeps crashing (make sure to use
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the 'run this service in the foreground' command line option)
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- The binary is missing in the filesystem
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* `C`: Service conditions are satisfied:
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- `on` (+): The condition is asserted.
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- `off` (-): The condition is deasserted.
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- `flux` (~): The condition state is unknown.
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For a detailed description of conditions, and how to debug them,
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see the [Finit Conditions](conditions.md) document.
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