Dawn Handler

Dawn Handler - Common representation for Dawn handlers. The role of Dawn handlers is to manage the created objects of a given type.

Lifecycle Sequencing

Handlers execute object lifecycle phases in order. For PROG and PROTO objects, binding happens between configure() and init() so that one-time initialization can use resolved dependencies.

Typical sequence:

  1. Call object configure() for all objects.

  2. Resolve and bind object dependencies (handler-managed).

  3. Call object init() for all objects.

  4. Later, call start() / stop() as runtime transitions.

  5. Call deinit() once during final teardown.

Within one handler, objects are processed in descriptor order for allocation, configure(), init(), and start(). Teardown runs in reverse order. This means descriptor order is part of the lifecycle contract when one object depends on another object’s initialization side effects.

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