finalizer

简明释义

英[ˈfaɪnəlaɪzə]美[ˈfaɪnəˌlaɪzər]

n. 终结器；定稿人；终止化器

英英释义

单词用法

同义词

反义词

例句

1.For example, a new slot cannot be requested on a destructor or finalizer.

例如，无法在析构函数或终结器上请求一个新的槽。

2.Note that the public class, Foo, has no finalizer (other than the trivial one it inherits from Object), so it doesn't matter whether a subclass finalizer calls super. finalize or not.

注意公有类Foo没有终结方法(除非它从object继承一个无关紧要的)，因此子类的终结方法是否调用super .finalize是不重要的。

3.If a finalizer (final queue) is associated with a soft or weak reference, then only after the soft or weak reference is removed is the finalizer removed on the next GC pass that is run.

如果一个finalizer (final查询)与一个soft或weak引用相关，那么只有当这个soft或weak引用删除后，这个finalizer才会在所运行的下一个GCpass上被删除。

4.The exploit is a variation of the well-known technique of using a finalizer for resurrecting an object.

该漏洞是使用终结器来恢复对象的著名技术的一种变体。

5.A finalizer is an appropriate vehicle for performing this task, assuming the native peer holds no critical resources.

假设本地对等体不拥有重要的资源，终结方法是执行这个任务的合适工具。

6.When the zombie finalizer is called, it takes the object being finalized - referenced by this - and stores it in the static zombie variable.

在调用zombie终结器时，它获取被终结的对象(由this引用)并将它存储在静态zombie变量中。

7.The software includes a finalizer to clean up resources when the object is no longer needed.

该软件包括一个终结器，用于在对象不再需要时清理资源。

8.In Java, the finalizer method is called by the garbage collector before an object is removed from memory.

在Java中，终结器方法在垃圾收集器删除对象之前被调用。

9.The team decided to implement a finalizer to ensure all temporary files are deleted after processing.

团队决定实现一个终结器，以确保在处理后删除所有临时文件。

10.Using a finalizer can help prevent memory leaks in long-running applications.

使用终结器可以帮助防止长时间运行的应用程序中的内存泄漏。

11.The library provides a built-in finalizer that handles resource cleanup automatically.

该库提供了一个内置的终结器，自动处理资源清理。

作文

In the world of programming and software development, the term finalizer refers to a specific mechanism that plays a crucial role in resource management. A finalizer is typically associated with an object in programming languages like Java, where it serves as a method that is called when an object is about to be garbage collected. This process is essential because it allows developers to release resources that are not automatically managed by the garbage collector, such as file handles, network connections, or memory allocated to native resources. Understanding how finalizers work can significantly improve the efficiency and reliability of software applications. The concept of a finalizer is rooted in the need for proper resource management in programming. When an object is no longer needed, the garbage collector reclaims its memory. However, if the object holds onto external resources that need to be explicitly released, a finalizer can be implemented to ensure that these resources are freed appropriately. For instance, if a class manages a database connection, implementing a finalizer allows the programmer to close the connection before the object is destroyed, preventing potential memory leaks or resource exhaustion. However, relying solely on finalizers is not always the best practice. There are several reasons for this. First, the timing of when a finalizer is executed is uncertain. The garbage collector does not guarantee when it will run, which means that resources may remain allocated longer than necessary. This uncertainty can lead to performance issues, especially in applications that require timely resource management. Additionally, finalizers can introduce complexity into the code. If not implemented carefully, they can lead to situations where resources are not released correctly, causing bugs that are difficult to trace. In some cases, using finalizers can even result in circular references, making it impossible for the garbage collector to reclaim memory, ultimately leading to memory leaks. To mitigate these issues, many developers prefer to use explicit resource management techniques, such as the try-with-resources statement in Java, which ensures that resources are closed promptly after use. This approach provides a clearer and more predictable way to handle resources compared to relying on finalizers. By using this method, developers can create more robust applications that manage resources efficiently without the unpredictability associated with finalizers. In conclusion, while finalizers serve a valuable purpose in resource management, their use should be approached with caution. Understanding the role of a finalizer and its implications on application performance and reliability is vital for any software developer. By combining the knowledge of finalizers with best practices in resource management, developers can create applications that are not only efficient but also resilient against common pitfalls associated with resource handling. Ultimately, the goal is to write clean, maintainable code that effectively manages resources, ensuring the smooth operation of software applications in various environments.

在编程和软件开发的世界中，术语finalizer指的是一种在资源管理中发挥关键作用的特定机制。finalizer通常与编程语言（如Java）中的对象相关联，它充当在对象即将被垃圾回收时调用的方法。这个过程至关重要，因为它允许开发人员释放垃圾收集器不会自动管理的资源，例如文件句柄、网络连接或分配给本机资源的内存。理解finalizer的工作原理可以显著提高软件应用程序的效率和可靠性。 finalizer的概念源于编程中对适当资源管理的需求。当一个对象不再需要时，垃圾收集器会回收其内存。然而，如果该对象持有需要显式释放的外部资源，则可以实现finalizer以确保这些资源被适当地释放。例如，如果一个类管理数据库连接，实施finalizer允许程序员在对象被销毁之前关闭连接，从而防止潜在的内存泄漏或资源耗尽。 然而，仅仅依赖finalizer并不总是最佳实践。这有几个原因。首先，执行finalizer的时间是不确定的。垃圾收集器并不保证何时运行，这意味着资源可能会比必要的时间更长地保持分配状态。这种不确定性可能导致性能问题，尤其是在需要及时资源管理的应用程序中。 此外，finalizer可能会给代码引入复杂性。如果没有仔细实施，它们可能导致资源未正确释放的情况，从而造成难以追踪的错误。在某些情况下，使用finalizer甚至可能导致循环引用，使得垃圾收集器无法回收内存，最终导致内存泄漏。 为了减轻这些问题，许多开发人员更喜欢使用显式资源管理技术，例如Java中的try-with-resources语句，该语句确保在使用后及时关闭资源。这种方法提供了一种比依赖finalizers更清晰、更可预测的处理资源的方式。通过使用这种方法，开发人员可以创建更强大的应用程序，能够高效地管理资源，而不必担心与finalizers相关的不确定性。 总之，虽然finalizers在资源管理中发挥了重要作用，但使用时应谨慎对待。理解finalizer的角色及其对应用程序性能和可靠性的影响，对于任何软件开发人员来说都是至关重要的。通过将对finalizer的知识与资源管理的最佳实践相结合，开发人员可以创建不仅高效而且在资源处理的常见陷阱面前具有韧性的应用程序。最终目标是编写干净、可维护的代码，有效管理资源，确保软件应用程序在各种环境中平稳运行。