opcodes

简明释义

英[ˈəʊp.kəʊdz]美[ˈoʊpˌkoʊdz]

abbr. 操作码（operation codes）

英英释义

单词用法

同义词

反义词

例句

1.First off, it doesn't come with a Ruby parser - instead it executes opcodes of the Ruby 1.9 VM.

首先，HotRuby并不包含一个Ruby语法分析器——而是执行ruby1.9虚拟机的操作码。

2.These opcodes can also be stored on disk.

这些操作码也可以存储在磁盘中。

3.So when the cached opcodes of a PHP script exists, we can skip by the parse and compile steps of the PHP request process and directly execute the cache opcodes and output the results.

因此当php脚本的缓存操作码存在时，我们可以跳过PHP请求流程的解析和编译步骤，直接执行缓存操作码并输出结果。

4.Ruby 1.9, like Rubinius, compiles Ruby source code to opcodes which are then executed by it's opcode interpreter.

像Rubinius这样的Ruby1.9虚拟机可以将Ruby源代码编译为操作码，然后由解释器执行。

5.The numbers are known as opcodes. In ROM, our little program would look like this.

以上的数字为操作码。在只读寄存器中，这段小程序看上去应该象下面这样。

6.You should see a list of PHP files in the cache, along with cache hits, the size of the code as measured in opcodes, the size of the source file measured in bytes, and more.

您能看到缓存中的PHP文件列表，连同cache hit、操作码的代码大小、源文件的字节大小，等等。

7.The compiler translates high-level code into machine language, which consists of various opcodes.

编译器将高级代码翻译成机器语言，其中包含各种操作码。

8.Understanding opcodes is crucial for optimizing software performance.

理解操作码对于优化软件性能至关重要。

9.Assembly language provides a more human-readable way to write opcodes.

汇编语言提供了一种更易读的方式来编写操作码。

10.Each opcode corresponds to a specific operation that the CPU can perform.

每个操作码对应CPU可以执行的特定操作。

11.Debugging often involves analyzing opcodes to find errors in the program.

调试通常涉及分析操作码以查找程序中的错误。

作文

In the world of computer science, understanding the fundamental components that make up a program is crucial. One such component is the opcodes, which stands for operational codes. These are the instructions that a computer's CPU (Central Processing Unit) understands and executes. Each opcode corresponds to a specific operation, such as adding two numbers, moving data from one place to another, or performing logic operations. Without opcodes, computers would not be able to perform any tasks, as they serve as the bridge between high-level programming languages and machine code. When a programmer writes code in a high-level language like Python or Java, that code must eventually be translated into machine language so that the CPU can understand it. This translation process involves converting the high-level instructions into a series of opcodes. For example, consider a simple addition operation in a high-level language. The compiler or interpreter will convert this operation into a series of opcodes that tell the CPU precisely how to execute the addition, including where to find the numbers to be added and where to store the result. The significance of opcodes extends beyond just individual instructions. They are part of the larger instruction set architecture (ISA) of a computer. The ISA defines the set of opcodes that a particular CPU can understand. Different CPUs may have different ISAs, which means the same high-level code might be translated into different opcodes depending on the architecture of the CPU. This divergence is one reason why software compatibility can be a challenge across different hardware platforms. Moreover, opcodes can vary in complexity. Some opcodes are simple, requiring only a single byte to represent them, while others may require multiple bytes. The complexity of these opcodes can affect the performance of a program. Efficient use of opcodes can lead to faster execution times, while inefficient use can slow down processing significantly. In addition to their role in executing instructions, opcodes also play a critical role in debugging and optimization. When developers are optimizing their code, they often look at the generated opcodes to identify bottlenecks or inefficiencies. By analyzing the opcodes, developers can make informed decisions about how to restructure their code to improve performance. Furthermore, understanding opcodes can be beneficial for those interested in low-level programming or systems programming. Knowledge of opcodes allows programmers to write more efficient code, as they can directly manipulate the opcodes that the CPU executes. This level of control can be particularly useful in fields such as embedded systems, game development, and performance-critical applications. In conclusion, opcodes are an essential aspect of computer programming and architecture. They facilitate communication between high-level programming languages and the hardware of a computer. By understanding opcodes, programmers can enhance their coding skills, improve performance, and gain deeper insights into how their programs operate at a fundamental level. Therefore, mastering opcodes is not just for those who wish to work in low-level programming; it is a valuable skill for any programmer aiming to write efficient and effective code.

在计算机科学的世界中，理解构成程序的基本组件至关重要。其中一个组件是操作码（opcodes），它代表操作代码。这些是计算机中央处理单元（CPU）理解和执行的指令。每个操作码对应于特定的操作，例如将两个数字相加、将数据从一个地方移动到另一个地方或执行逻辑操作。如果没有操作码，计算机将无法执行任何任务，因为它们充当了高级编程语言与机器代码之间的桥梁。 当程序员用像Python或Java这样的高级语言编写代码时，这些代码最终必须被翻译成机器语言，以便CPU能够理解。这一翻译过程涉及将高级指令转换为一系列操作码。例如，考虑在高级语言中的简单加法操作。编译器或解释器会将此操作转换为一系列操作码，告诉CPU如何精确执行加法，包括在哪里找到要相加的数字以及在哪里存储结果。 操作码的重要性不仅仅局限于单个指令。它们是计算机更大指令集体系结构（ISA）的一部分。ISA定义了特定CPU可以理解的一组操作码。不同的CPU可能具有不同的ISA，这意味着相同的高级代码可能根据CPU的体系结构被转换为不同的操作码。这种差异是软件兼容性在不同硬件平台上可能成为挑战的原因之一。 此外，操作码的复杂性也有所不同。有些操作码很简单，只需要一个字节来表示，而其他的可能需要多个字节。这些操作码的复杂性可能影响程序的性能。高效使用操作码可以导致更快的执行时间，而低效使用则可能显著减慢处理速度。 除了在执行指令中的作用，操作码在调试和优化中也发挥着关键作用。当开发人员优化他们的代码时，他们通常会查看生成的操作码以识别瓶颈或低效之处。通过分析操作码，开发人员可以就如何重构代码以提高性能做出明智的决定。 此外，理解操作码对于那些对低级编程或系统编程感兴趣的人来说是有益的。掌握操作码使程序员能够编写更高效的代码，因为他们可以直接操纵CPU执行的操作码。这种控制水平在嵌入式系统、游戏开发和性能关键应用等领域特别有用。 总之，操作码是计算机编程和架构的重要方面。它们促进了高级编程语言与计算机硬件之间的通信。通过理解操作码，程序员可以提升他们的编码技能、改善性能，并深入了解他们的程序在基本层面上的运作。因此，掌握操作码不仅仅是希望从事低级编程的人的技能；这是任何希望编写高效和有效代码的程序员的宝贵技能。