WaitableLambdaTask class

A waitable task that runs a stored callable.

On this page

Use: import ThinkMeta.ConcurrentTasks.Tasks.WaitableTask;
Namespace: ThinkMeta::ConcurrentTasks::Tasks
Inherits: WaitableTask

Syntax

template <std::invocable F>
using WaitableLambdaTask = _WaitableLambdaTask<SuspensionKind::Multiple, F>;
template <std::invocable F>
using WaitableLambdaTask_s = _WaitableLambdaTask<SuspensionKind::Single, F>;

Template parameters

_SuspensionKindSuspensionKind: As for WaitableTask.
Fstd::invocable: Type of the stored callable: an object type invocable without arguments; it must not throw.

Remarks

The waitable counterpart of LambdaTask. Usually built by WaitableTask::Create; comes as WaitableLambdaTask and WaitableLambdaTask_s. The callable must not throw: an exception escaping it ends the process.

Names

Name	Description
`WaitableLambdaTask`	`WaitableLambdaTask` for any number of waiting tasks.
`WaitableLambdaTask_s`	`WaitableLambdaTask` for at most one waiting task at a time. Cheaper, and Wait accepts a timeout; the waiter may destroy it as soon as Wait returned.

Constructors

WaitableLambdaTask

Stores the callable.

Syntax

template <typename FF>
requires std::constructible_from<F, FF&&>
explicit WaitableLambdaTask(
    FF&& func,
    INotifyTaskStateChange* notifyTaskStateChange = nullptr
) noexcept;

Template parameters

FFtypename: Type of the argument; F must be constructible from it.

Parameters

funcFF&&: Copied or moved into F.
notifyTaskStateChangeINotifyTaskStateChange*: Told when the task exits; may be nullptr.Default: nullptr

Methods

Run

Calls the stored callable.

Syntax

void Run() noexcept override;

Generated from ThinkMeta.ConcurrentTasks.API @ e29892d (2026-10-30).