reentrant

简明释义

英[riːˈentrənt]美[rɪˈentrənt]

adj. 再进去的；凹角的

n. 凹角；再进入

英英释义

单词用法

同义词

反义词

例句

1.Reentrant functions either use local variables or protect their data when global variables are used.

可重入函数要么使用本地变量，要么在使用全局变量时保护自己的数据。

2.A reentrant function can be safely called recursively or from multiple tasks.

可再入的函数可以被安全地递归调用或由多任务多次调用。

3.I would like to propose a model for dealing with reentrant functions at the compiler level.

我将提出一个在编译器层次处理可重入函数的模型。

4.A system configuration of reentrant I-IORS was proposed and analyzed theoretically.

文中还提出了一种再入式I -IORS的系统方案，并进行了理论分析。

5.A reentrant function can be interrupted at any time and resumed at a later time without loss of data.

可重入函数可以在任意时刻被中断，稍后再继续运行，不会丢失数据。

6.If the tool is designed to contain hardened areas around holes or reentrant angles the cooling effect must be very intensive at these areas.

如果工具被设计在附近包含变硬区域洞，或再进去的角冷却的效果一定是非常强烈的在这些区域。

7.If a function USES and modifies an object that you supply, it is potentially non-reentrant; two calls can interfere if they use the same object.

如果某个函数使用并修改了您提供的某个对象，那它可能就是不可重入的；如果两个调用使用同一对象，那么它们会相互干扰。

8.The reentrant nature of the software allows it to recover gracefully from interruptions.

软件的可重入特性使其能够在中断后优雅地恢复。

9.In a reentrant function, the state is preserved across multiple invocations.

在一个可重入函数中，状态在多次调用之间得以保留。

10.If you want your function to be reentrant, avoid using global variables.

如果你希望你的函数是可重入的，避免使用全局变量。

11.The algorithm is designed to be reentrant, allowing multiple threads to execute it simultaneously without conflicts.

该算法被设计为可重入，允许多个线程同时执行而不会发生冲突。

12.Developers often prefer reentrant code in multi-threaded applications to avoid race conditions.

开发人员在多线程应用中通常更喜欢可重入代码，以避免竞争条件。

作文

In the realm of computer science, particularly in programming and systems design, the term reentrant refers to a function or piece of code that can be safely interrupted and called again ('re-entered') before its previous executions are complete. This characteristic is crucial for developing robust applications, especially in multi-threaded environments where multiple threads may attempt to execute the same function concurrently. A reentrant function ensures that it maintains its integrity and produces correct results despite being executed simultaneously by different threads.To understand why reentrant functions are essential, we need to consider the challenges posed by concurrency. In a typical scenario, if two threads try to modify a shared variable at the same time, it could lead to unpredictable behavior, known as a race condition. However, if the function that accesses this variable is designed to be reentrant, it can handle such situations gracefully. Instead of relying on shared state, a reentrant function often uses local variables, which are stored on the stack and are unique to each function call. This means that even if multiple threads invoke the function simultaneously, they operate on their own separate copies of the data, thus avoiding conflicts.Moreover, reentrant functions are not only beneficial in multi-threaded applications but also in interrupt-driven systems. For instance, in embedded programming, an interrupt service routine (ISR) might need to call a function that could itself be interrupted. If the function is reentrant, it can be safely interrupted and re-entered without causing corruption of data or unexpected behavior.However, designing a reentrant function requires careful consideration. Developers must avoid using static or global variables, as these can lead to shared state issues. Additionally, any resources that the function accesses must be managed in a way that prevents conflicts. This often involves using synchronization mechanisms or ensuring that the function operates solely on its parameters and local variables.In conclusion, the concept of reentrant functions plays a vital role in modern programming, especially in environments where concurrency is prevalent. By ensuring that functions can be interrupted and re-entered safely, developers can create more reliable and efficient software applications. Embracing the principles of reentrant design not only enhances performance but also reduces the likelihood of bugs related to concurrent execution. As technology continues to evolve, the importance of understanding and implementing reentrant code will only grow, making it a fundamental skill for any programmer aiming to excel in their field.

在计算机科学领域，特别是在编程和系统设计中，术语reentrant指的是一个可以安全中断并在其先前执行完成之前再次调用（“重新进入”）的函数或代码片段。这一特性对于开发健壮的应用程序至关重要，尤其是在多线程环境中，多个线程可能会尝试同时执行相同的函数。reentrant函数确保它在被不同线程同时执行时保持完整性并产生正确的结果。要理解为什么reentrant函数是必不可少的，我们需要考虑并发带来的挑战。在典型场景中，如果两个线程同时尝试修改一个共享变量，可能会导致不可预测的行为，称为竞争条件。然而，如果访问此变量的函数被设计为reentrant，则可以优雅地处理这种情况。reentrant函数通常使用局部变量，这些变量存储在栈上，并且是每个函数调用唯一的。这意味着即使多个线程同时调用该函数，它们也在自己的数据副本上操作，从而避免了冲突。此外，reentrant函数不仅在多线程应用中有益，而且在驱动中断的系统中也非常重要。例如，在嵌入式编程中，一个中断服务例程（ISR）可能需要调用一个可能会被中断的函数。如果该函数是reentrant的，则可以安全地中断并重新进入，而不会导致数据损坏或意外行为。然而，设计reentrant函数需要仔细考虑。开发人员必须避免使用静态或全局变量，因为这些可能导致共享状态问题。此外，函数访问的任何资源都必须以防止冲突的方式进行管理。这通常涉及使用同步机制或确保函数仅在其参数和局部变量上操作。总之，reentrant函数的概念在现代编程中发挥着至关重要的作用，特别是在并发普遍存在的环境中。通过确保函数可以安全地被中断和重新进入，开发人员可以创建更可靠和高效的软件应用程序。接受reentrant设计原则不仅提高了性能，还减少了与并发执行相关的错误的可能性。随着技术的不断发展，理解和实现reentrant代码的重要性只会增加，使其成为任何希望在领域中出类拔萃的程序员的基本技能。