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Dispatch immediate tasks without a work item #200

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Dispatch immediate tasks without a work item #200

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1d3897c
Dispatch immediate tasks without a work item
rnro Oct 1, 2026
5cea86e
Hand immediate tasks to the queue in an `@unchecked Sendable` wrapper
rnro Oct 2, 2026
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10 changes: 9 additions & 1 deletion Sources/SwiftNetwork/Context/NetworkContext.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -369,10 +369,18 @@ extension NetworkContext {
init(globals: Globals) {
self.globals = globals
}
/// A task for the context's queue to run.
///
/// Tasks are not `Sendable`; the queue serializes them, which is the guarantee `NetworkContext` rests on
/// for its own `@unchecked Sendable` conformance.
private struct QueuedTask: @unchecked Sendable {
let run: () -> Void
}
/// Runs an immediate task. This task must not be run directly on the caller's stack, but otherwise
/// no assumptions are made about how the task is run.
func runImmediate(_ task: @escaping (() -> Void)) {
globals.queue.async(execute: DispatchWorkItem(block: task))
let queued = QueuedTask(run: task)
globals.queue.async { queued.run() }
}
/// Schedules a task to run after a delay, using a reference.
func schedule(_ task: @escaping (() -> Void), after delay: NetworkDuration, reference: TimerReference) {
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