blocking operation

简明释义

封锁行动

英英释义

例句

1.The database query was a blocking operation, preventing other queries from executing simultaneously.

该数据库查询是一个阻塞操作，阻止其他查询同时执行。

2.In network programming, a blocking operation can cause the application to freeze if the server does not respond.

在网络编程中，如果服务器没有响应，阻塞操作可能导致应用程序冻结。

3.When a thread performs a blocking operation, it waits until the operation is complete before continuing execution.

当一个线程执行阻塞操作时，它会等待直到操作完成后才继续执行。

4.To improve responsiveness, avoid blocking operations in the main user interface thread.

为了提高响应能力，避免在主用户界面线程中执行阻塞操作。

5.Using a blocking operation for file I/O can significantly slow down the performance of your application.

在文件输入输出中使用阻塞操作可能会显著降低应用程序的性能。

作文

In the world of computer science and programming, the term blocking operation refers to a type of operation that prevents further execution of code until the operation is completed. This concept is crucial for understanding how processes interact with each other and how they manage resources. For instance, when a program needs to read data from a disk, it may perform a blocking operation that halts the program's progress until the data is fully retrieved. This can lead to inefficiencies, especially in systems where responsiveness is critical. One common example of a blocking operation is a network request. When a program sends a request to a server, it typically waits for a response before continuing. This waiting period can be problematic in applications that require real-time interaction, such as online gaming or video conferencing. If the application is stuck waiting for a response, it can become unresponsive, leading to a poor user experience. To mitigate the issues associated with blocking operations, developers often utilize asynchronous programming techniques. By employing callbacks, promises, or async/await syntax, a program can initiate a blocking operation without freezing the entire application. Instead of waiting for the operation to complete, the program can continue executing other tasks, enhancing overall performance and responsiveness. However, while asynchronous methods are beneficial, they also introduce complexity into the codebase. Developers must carefully manage the flow of execution to ensure that operations that depend on the results of blocking operations are executed in the correct order. This can lead to challenges such as callback hell, where nested callbacks become difficult to manage and understand. Furthermore, not all operations can or should be asynchronous. In some cases, blocking operations might be necessary to maintain data integrity or ensure that certain tasks are completed in a specific sequence. For example, when writing to a database, a developer might opt for a blocking operation to ensure that the data is correctly saved before proceeding to the next step. In conclusion, understanding blocking operations is essential for any programmer or software developer. These operations play a significant role in how programs function and interact with each other. While they can lead to inefficiencies and unresponsiveness, there are ways to manage their impact through asynchronous programming techniques. Balancing the use of blocking operations and asynchronous methods is key to creating efficient and responsive applications. As technology continues to evolve, the strategies for handling these operations will likely become even more sophisticated, allowing developers to create seamless user experiences.

在计算机科学和编程领域，术语阻塞操作指的是一种操作，它会在操作完成之前阻止代码的进一步执行。这个概念对于理解进程如何相互作用以及如何管理资源至关重要。例如，当程序需要从磁盘读取数据时，它可能会执行一个阻塞操作，该操作会暂停程序的进展，直到数据完全检索到。这可能导致低效率，特别是在响应性至关重要的系统中。一个常见的阻塞操作例子是网络请求。当程序向服务器发送请求时，它通常会在继续之前等待响应。这一等待期在需要实时交互的应用程序中可能会成为问题，比如在线游戏或视频会议。如果应用程序被卡在等待响应的状态，它可能会变得无响应，从而导致用户体验不佳。为了减轻与阻塞操作相关的问题，开发人员通常采用异步编程技术。通过使用回调、承诺或async/await语法，程序可以在不冻结整个应用程序的情况下启动一个阻塞操作。程序可以继续执行其他任务，而不是等待操作完成，从而提高整体性能和响应性。然而，虽然异步方法是有益的，但它们也为代码库引入了复杂性。开发人员必须仔细管理执行流程，以确保依赖于阻塞操作结果的操作按正确顺序执行。这可能导致如回调地狱等挑战，其中嵌套的回调变得难以管理和理解。此外，并非所有操作都可以或应该是异步的。在某些情况下，阻塞操作可能是必要的，以维护数据完整性或确保某些任务按照特定顺序完成。例如，在写入数据库时，开发人员可能选择使用阻塞操作以确保数据在继续下一步之前被正确保存。总之，理解阻塞操作对任何程序员或软件开发人员而言都是至关重要的。这些操作在程序的功能和相互作用中发挥着重要作用。虽然它们可能导致低效率和无响应，但通过异步编程技术可以管理其影响。平衡使用阻塞操作和异步方法是创建高效和响应应用程序的关键。随着技术的不断发展，处理这些操作的策略可能会变得更加复杂，从而使开发人员能够创建无缝的用户体验。