Timeout

expect open class Timeout

A policy on how much time to spend on a task before giving up. When a task times out, it is left in an unspecified state and should be abandoned. For example, if reading from a source times out, that source should be closed and the read should be retried later. If writing to a sink times out, the same rules apply: close the sink and retry later.

Timeouts and Deadlines

This class offers two complementary controls to define a timeout policy.

Timeouts specify the maximum time to wait for a single operation to complete. Timeouts are typically used to detect problems like network partitions. For example, if a remote peer doesn't return any data for ten seconds, we may assume that the peer is unavailable.

Deadlines specify the maximum time to spend on a job, composed of one or more operations. Use deadlines to set an upper bound on the time invested on a job. For example, a battery-conscious app may limit how much time it spends pre-loading content.

actual open class Timeout

Inheritors

actual open class Timeout

Constructors

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constructor()
constructor()

Types

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expect object Companion
actual object Companion
actual object Companion

Functions

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open fun awaitSignal(condition: Condition)

Waits on monitor until it is signaled. Throws InterruptedIOException if either the thread is interrupted or if this timeout elapses before monitor is signaled. The caller must hold the lock that monitor is bound to.

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open fun cancel()

Prevent all current applications of this timeout from firing. Use this when a time-limited operation should no longer be time-limited because the nature of the operation has changed.

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Clears the deadline.

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open fun clearTimeout(): Timeout

Clears the timeout. Operating system timeouts may still apply.

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fun deadline(duration: Long, unit: TimeUnit): Timeout

Set a deadline of now plus duration time.

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Returns the nano time when the deadline will be reached.

open fun deadlineNanoTime(deadlineNanoTime: Long): Timeout

Sets the nano time when the deadline will be reached. All operations must complete before this time. Use a deadline to set a maximum bound on the time spent on a sequence of operations.

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open fun hasDeadline(): Boolean

Returns true if a deadline is enabled.

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inline fun <T> intersectWith(other: Timeout, block: () -> T): T

Applies the minimum intersection between this timeout and other, run block, then finally rollback this timeout's values.

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open fun throwIfReached()

Throws an InterruptedIOException if the deadline has been reached or if the current thread has been interrupted. This method doesn't detect timeouts; that should be implemented to asynchronously abort an in-progress operation.

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open fun timeout(timeout: Long, unit: TimeUnit): Timeout

Wait at most timeout time before aborting an operation. Using a per-operation timeout means that as long as forward progress is being made, no sequence of operations will fail.

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fun Timeout.timeout(timeout: Long, unit: DurationUnit): Timeout
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open fun timeoutNanos(): Long

Returns the timeout in nanoseconds, or 0 for no timeout.

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open fun waitUntilNotified(monitor: Any)

Waits on monitor until it is notified. Throws InterruptedIOException if either the thread is interrupted or if this timeout elapses before monitor is notified. The caller must be synchronized on monitor.