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31 lines
1.4 KiB
Plaintext
31 lines
1.4 KiB
Plaintext
created: 20140502142900000
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modified: 20140502142900000
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tags: mechanism dev
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title: StartupMechanism
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type: text/vnd.tiddlywiki
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The startup mechanism runs the installed startup modules at the end of the [[boot process|BootMechanism]].
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! Startup Modules
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Modules with their ''module-type'' field set to `startup`:
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* Must export a `startup` function
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** For synchronous startup modules the startup function is called as `startup()`, asynchronous modules are passed a callback they must invoke on completion: `startup(callback)`
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* May export a `name` property that is used to identify the task
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* May export a `after` property containing an array of names of dependent tasks that must be run before this one
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* May export a `before` property containing an array of names of tasks that must be run after this one
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* May export a `platforms` property containing an array of names of platforms that are required in order for the startup module to be executed. The defined platforms are ''node'' and ''browser''
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! Startup Processing
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The startup mechanism begins by sequentially executing the tasks that have no dependencies. It then continues executing tasks as they are unlocked by the completion of their dependencies.
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There is no guarantee of the execution order of tasks that share the same dependencies.
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! Startup Tasks
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The core defines the following sequence of named startup tasks:
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|!Task Name |!Description |
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