Crate zng_app_context

This crate is part of the zng project.

App execution context.

Macros

• app_local
  Declares new app local variable.
• context_local
  Declares new app and context local variable.

Structs

• AppId
  Identifies an app instance.
• AppLocal
  An app local storage.
• AppScope
  Represents an app lifetime, ends the app on drop.
• ContextLocal
  Represents an AppLocal<T> value that can be temporarily overridden in a context.
• ContextValueSet
  Identifies a selection of LocalContext values.
• FullLocalContext
  A local context that can be loaded cheaply.
• LocalContext
  Tracks the current execution context.
• MappedRwLockReadGuardOwned
  Represents a read guard for an Arc<RwLock<T>> that owns a reference to it, mapped from another read guard.
• MappedRwLockWriteGuardOwned
  Represents a write guard for an Arc<RwLock<T>> that owns a reference to it, mapped from another read guard.
• ReadOnlyRwLock
  Read-only wrapper on an Arc<RwLock<T>> contextual value.
• RunOnDrop
  Helper, runs a cleanup action once on drop.
• RwLockReadGuardOwned
  Represents a read guard for an Arc<RwLock<T>> that owns a reference to it.
• RwLockWriteGuardOwned
  Represents a read guard for an Arc<RwLock<T>> that owns a reference to it.
• StaticAppId
  Lazy inited AppId.
• TracingDispatcherContext
  Represents the tracing::dispatcher::get_default dispatcher in a context value set.

Enums

• CaptureFilter
  Defines a LocalContext::capture_filtered filter.

Traits

• ContextLocalKeyProvider
  Provides an identifying key for a context local value.