Task

As explained in Modern C, Third Edition

A task is a distinct part of a program's work that can be performed with little or no interaction with other tasks.

A task is a distinct part of a program’s work that can proceed with little or no interaction with other tasks. Threads provide separate control flows for executing tasks concurrently, either simultaneously on multiple processors or through interleaving. section 20.0

A task can represent an independent responsibility, such as:

• Drawing a cell matrix to a terminal. section 20.0
• Capturing keystrokes, moving the cursor, and creating cells. section 20.0
• Updating game state from one life cycle to the next. section 20.0
• Counting living neighboring cells, tightly coupled with updating. section 20.0

Figure 20.1 Control flow of the five threads of B9

A control-flow diagram helps show how independent task loops interact across the program’s threads. section 20.0

How Modern C, Third Edition covers it

How deep it goes

Defines task boundaries and illustrates their thread-based execution, but defers detailed synchronization mechanisms.

Examples

Uses the B9 cellular-game tasks for drawing, input, updating, and neighbor accounting.

What you can do after

Evaluate program responsibilities as candidate concurrent tasks and relate each task to a thread control flow.

How it connects

Connects tasks with threads, control flow, shared data structures, and interthread communication.

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Also explained in

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  Python Concurrency with asyncioAn asyncio task is a future-like unit of work that runs a coroutine and eventually contains its result or exception.
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  Rust Servers, Services, and AppsAn asynchronous task is a schedulable unit of asynchronous computation managed by an asynchronous runtime.
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  Secrets of the JavaScript Ninja, Second EditionA unit of scheduled work processed by a runtime's event loop, such as an event handler or timer callback.
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  .NET in Action, Second EditionTask is a .NET type representing an asynchronous unit of work that may complete in the future.
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  Grokking ConcurrencyA task is a logically independent chunk of work that serves as a general abstraction for a unit of execution.
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  Get Programming: Learn to code with PythonA task is a unit of work performed through a sequence of actions or steps to achieve a goal.
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  Data Storytelling with Altair and AIA task is a prompt component that specifies the operation or result the generative AI system should perform or produce.
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  Pro ASP.NET Core 7, Tenth EditionTask is the .NET abstraction representing an asynchronous operation that may produce a result when it completes.
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  Rust in Action: Systems programming concepts and techniquesA task is an abstract unit of work whose meaning may range from a thread to a function call or a running program.

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Related concepts

• futureuses · A future is an abstraction representing an asynchronous computation or its result, which may not be complete or available yet.
• asyncio.create_taskproduced by · asyncio.create_task is a Python asyncio function that schedules a coroutine to run as a Task on an event loop and returns that Task.
• coroutineuses · A coroutine is a computation that can suspend and later resume execution while retaining its state, enabling cooperative transfer of control.
• thread poolused by · A worker pool is a managed collection of workers that execute submitted or queued tasks, typically reusing workers to handle multiple tasks concurrently.
• InvokeAsyncproduced by · InvokeAsync is an API method for invoking an operation asynchronously and obtaining or scheduling its result.

This explainer was generated by Manning's knowledge graph from the text of Modern C, Third Edition. The section links point to the parts of the book it draws on.