allocator

简明释义

英[ˈæləʊkeɪtə(r)]美[ˈæləkeɪtər]

n. 分配算符

英英释义

单词用法

同义词

反义词

例句

1.Jeff's allocator revolves around object caching.

Jeff的分配器是围绕对象缓存进行的。

2.A final optimization-again, contiguous block related-is the block allocator for ext4.

这是最后一个与相邻块相关的优化，即针对ext4的块分配器。

3.Individual inode cache objects are allocated from the inode_cache slab allocator.

从inode_cacheslab分配器分配单个inode缓存对象。

4.A good memory allocator needs to balance a number of goals.

一个好内存分配器需要均衡多个目标。

5.The Linux slab allocator uses these ideas and others to build a memory allocator that is efficient in both space and time.

Linuxslab分配器使用了这种思想和其他一些思想来构建一个在空间和时间上都具有高效性的内存分配器。

6.If locality were the only goal, an allocator might always allocate each successive chunk as close to the previous one as possible.

如果局部化是唯一的目标，分配器可能总是尽可能接近的分配每个连续的块。

7.An efficient memory allocator can significantly speed up application execution.

高效的内存分配器可以显著加快应用程序的执行速度。

8.The memory allocator is responsible for managing dynamic memory in the application.

内存分配器负责管理应用程序中的动态内存。

9.In a multi-threaded environment, the allocator must ensure thread safety when allocating resources.

在多线程环境中，分配器必须确保在分配资源时的线程安全。

10.The allocator failed to allocate enough memory, causing the program to crash.

分配器未能分配足够的内存，导致程序崩溃。

11.The custom allocator improved performance by reducing fragmentation.

自定义分配器通过减少碎片化来提高性能。

作文

In the realm of computer science and software engineering, the term allocator refers to a crucial component responsible for managing memory allocation. An allocator is a system or routine that assigns portions of memory to various programs or processes as they require it. This process is essential because efficient memory management directly impacts the performance and stability of applications. Without a well-designed allocator, programs may experience issues such as memory leaks, fragmentation, or even crashes due to insufficient memory. To understand the role of an allocator, it is important to consider how memory is structured in a computer. Memory is divided into several blocks, and when a program requests memory, the allocator must determine which block to assign. It needs to keep track of which blocks are in use and which are free, ensuring that memory is utilized effectively without causing overlaps or wastage. There are various types of allocators, each with its own approach to memory management. For instance, some allocators use a first-fit strategy, where they allocate the first available block of memory that meets the request. Others might implement a best-fit approach, searching for the smallest available block that can accommodate the request, thereby minimizing wasted space. Additionally, there are also more complex algorithms like buddy allocation, which divides memory into partitions to enable faster allocation and deallocation. The choice of allocator can significantly affect the performance of an application. In high-performance computing environments, where speed and efficiency are paramount, a poorly designed allocator can become a bottleneck, slowing down the entire system. Therefore, developers often spend considerable time optimizing their allocators to ensure that they meet the specific needs of their applications. Moreover, modern programming languages and environments often provide built-in allocators that abstract away the complexities of memory management. For example, languages like C++ offer standard libraries that include various allocators, allowing developers to focus more on application logic rather than memory handling. However, understanding the underlying principles of how these allocators work is still essential for writing efficient, high-performance code. In conclusion, the concept of an allocator is fundamental to the functioning of software applications. It plays a vital role in memory management, influencing both performance and reliability. As technology continues to advance, the methods and strategies employed by allocators will evolve, but their importance in the development process will remain constant. By mastering the intricacies of allocators, developers can enhance their ability to create robust and efficient software solutions that meet the demands of today's computing environment.

在计算机科学和软件工程领域，术语allocator指的是负责管理内存分配的关键组件。allocator是一个系统或例程，负责在程序或进程需要时将内存的部分分配给它们。这个过程至关重要，因为有效的内存管理直接影响应用程序的性能和稳定性。如果没有设计良好的allocator，程序可能会遇到内存泄漏、碎片化甚至由于内存不足而崩溃等问题。要理解allocator的角色，重要的是考虑计算机中内存的结构。内存被划分为几个块，当程序请求内存时，allocator必须确定分配哪个块。它需要跟踪哪些块正在使用，哪些是空闲的，确保内存得到有效利用，而不会导致重叠或浪费。有各种类型的allocators，每种都有自己管理内存的方式。例如，一些allocators使用首次适应策略，即分配满足请求的第一个可用内存块。其他可能实施最佳适应方法，寻找能够容纳请求的最小可用块，从而最小化浪费的空间。此外，还有更复杂的算法，如伙伴分配，它将内存划分为分区，以实现更快的分配和释放。allocator的选择可以显著影响应用程序的性能。在高性能计算环境中，速度和效率至关重要，一个设计不良的allocator可能成为瓶颈，减缓整个系统的运行。因此，开发人员通常会花费大量时间优化他们的allocators，确保它们满足应用程序的特定需求。此外，现代编程语言和环境通常提供内置的allocators，抽象掉内存管理的复杂性。例如，C++语言提供了标准库，其中包括各种allocators，允许开发人员更多地关注应用程序逻辑，而不是内存处理。然而，理解这些allocators的基本原理对于编写高效、高性能的代码仍然至关重要。总之，allocator的概念对于软件应用程序的功能至关重要。它在内存管理中发挥着重要作用，影响着性能和可靠性。随着技术的不断进步，allocators所采用的方法和策略将不断演变，但它们在开发过程中的重要性将始终保持不变。通过掌握allocators的复杂性，开发人员可以增强其创建稳健和高效的软件解决方案的能力，以满足当今计算环境的需求。