This book introduces the tools you'll need to program with the packetC language. packetC speeds the development of applications that live within computer networks, the kind of programs that provide network functionality for connecting "clients" and "servers" and "clouds." The simplest examples provide packet switching and routing while more complex examples implement cyber security, broadband policies or cloud-based network infrastructure. Network applications, such as those processing digital voice and video, must be highly scalable, secure and maintainable. Such application requirements translate to requirements for a network programming language that leverages massively-parallel systems and ensures a high level of security, while representing networking protocols and transactions in the simplest way possible. packetC meets these requirements with an intuitive approach to coarse-grained parallelism, with strong-typing and controlled memory access for security and with new data types and operators that express the classic operations of the network-oriented world in familiar programming terms. No other language has addressed the full breadth of requirements for tractable parallelism, secure processing and usable constructs. The packetC language is growing in adoption and has been used to develop solutions operating in some of the world's largest networks. This important new language, packetC, has now been successfully documented in this book, in which the language's authors provide the materials and tools you'll need in a readable and accessible form. What you'll learnThis book is the primary document specifying the language from a developer's point of view and act as the formal language user's guide. It covers: * How to program applications in packetC. * The parallel programming model of packetC * Deviations from C99 and the unique aspects of packetC * How to leverage existing C code and the applicability of the C standard libraries Who this book is for packetC Programming is written for a wide variety of potential programmers. Most importantly, it's for people who need to use packetC to program for the Internet backbone. Still, knowledge of the packetC language will help a much wider array of programmers who need to write effective code that will be optimized for the cloud and work effectively and efficiently through complex network structures. Finally, readers will learn about how and why packetC is needed, and to better understand the technologies, standards and issues surrounding the 'net. If you really want to understand this level of programming, this book is a must-have! Table of ContentsPART 1: packetC Background Chapter 1: Origins of packetC Chapter 2: Introduction to packetC Language Chapter 3: Style Guidelines for packetC Programs Chapter 4: Construction of a packetC Program PART 2: Language Reference Chapter 5: Variables--Identifiers, Basic Scalar Data Types, and Literals Chapter 6: Data Initialization and Mathematical Expressions Chapter 7: Functions Chapter 8: packetC Data Type Fundamentals Chapter 9: C-Style Data Types Chapter 10: Basic Packet Interaction and Operations Chapter 11: Selection Statements Chapter 12: Loops and Flow Control Chapter 13: Exception Handling Chapter 14: Databases Types and Operations Chapter 15: Search Set Types and Operations Chapter 16: Reference Type and Operations Chapter 17: Lock and Unlock Operators Chapter 18: Packet Information Block and System Packet Operations Chapter 19: Descriptor Type and Operations PART 3: Developing Applications Chapter 20: Control Plane and System Interaction Chapter 21: packetC Pre-Processor Chapter 22: Pragmas and Other Key Compiler Directives Chapter 23: Developing Large Applications in packetC Chapter 24: Construction of a packetC Executable Chapter 25: packetC Standard Networking Descriptors Chapter 26: Developing For Performance Chapter 27: Standard Libraries PART 4: Industry Reprints Appendix A: Reference Tables Appendix B: Open Systems Vendors for packetC Appendix C: Glossary Appendix D: CloudShield Products Supporting packetC
评分
评分
评分
评分
我注意到这本书的理论深度似乎停留在上世纪末的技术栈水平。虽然C语言本身是经久不衰的,但这本书中引用的许多底层实现思想和工具链配置,对于今天的现代开发环境来说,显得过于老旧和繁琐。书中大量篇幅介绍了一种基于中断服务程序(ISR)的非阻塞I/O模型,并且详述了如何在DOS或早期的Windows 3.1环境下实现这种机制。然而,在当前主流的Linux、macOS或现代Windows平台上,异步I/O(AIO)或事件驱动模型(如epoll/kqueue)才是处理高并发网络请求的标准范式。作者似乎完全忽略了这些更高效、更安全的现代API设计。当我尝试将书中的一些核心概念移植到我的Linux服务器代码中时,发现大部分逻辑都需要进行彻底的重构,才能适应现代操作系统的调用规范和安全策略。这种“活化石”式的技术呈现,对于期望跟上行业前沿的读者来说,几乎是无法接受的,它不仅没有提供实用的现代解决方案,反而可能误导读者走上一些已经被证明效率低下且维护困难的老路。
评分从整体的叙事结构来看,《packetC Programming》缺乏一个清晰的学习路径和目标导向。它更像是一系列不连贯的技术备忘录的堆砌。第一章可能在讨论如何用位掩码解析一个复杂的协议字段,而下一章却突然跳跃到如何编写一个简单的用户态定时器驱动,中间缺乏必要的过渡和解释,使得初学者在跟进时感到迷失。这种章节间的跳跃性,反映出作者可能是在整理自己零散的笔记,而不是为读者构建一个循序渐进的知识体系。如果这本书的目标是教授“packet C”,那么它应该围绕一个核心的、可重复实现的协议(比如一个简化的ARP或DNS客户端)来展开,层层递进地引入所需的技术点。然而,这本书更像是一个技术“工具箱”,里面散乱地放着各种扳手和螺丝刀,但没有清晰的装配说明书。读完后,我脑海中留下的不是一个清晰的知识框架,而是一些孤立的、难以串联的技术片段,这极大地降低了知识吸收的效率和应用落地的可能性。
评分这本书的排版和示例代码质量,可以说是一场灾难。作为一本技术书籍,代码的可读性本应是重中之重,但《packetC Programming》在这方面表现得极其令人失望。变量命名随意且缺乏一致性,很多关键的函数命名使用了非标准缩写,如果不是对着上下文反复揣摩,根本无法理解其意图。更糟糕的是,书中引用的许多代码片段似乎是直接从旧有的、未经版本控制的项目中拖拽出来的,充斥着大量的“魔术数字”(Magic Numbers),而这些数字的含义在正文中从未得到充分的解释。例如,在讨论到一个关键的数据结构初始化时,作者直接设定了一个内存偏移量为`0xDEADBEEF`的常量,并声称这是“行业惯例”,却没有任何对其来源或合理性的论证。此外,插图和图表的缺失也让复杂的结构难以理解。在讲解一个复杂的位操作流程时,如果能有一张清晰的状态图来辅助说明,阅读体验会大大提升,但作者似乎完全依赖纯文本描述,使得理解成本几何级数地上涨。这种粗糙的制作工艺,让人不禁怀疑作者对技术内容的打磨程度,也极大地削弱了其作为一本专业参考书的价值。
评分本书在对“C语言”这一核心工具的使用上,展现出了一种近乎偏执的“原教旨主义”倾向。作者似乎对任何高于C89标准的功能持有一种强烈的抵触情绪。全书中,你几乎看不到任何对`stdint.h`中固定宽度整数类型的使用,作者坚持使用`unsigned long`或`int`来代表所有整数,并依赖于编译器的默认字长,这在需要精确控制网络数据包字节序和长度的场景下,是极其危险的。更有甚者,在处理字符串时,作者极力反对使用任何形式的内存安全函数,例如,书中所有的地方都使用了`gets()`或直接的手动边界检查循环来处理输入,这在今天的安全审计环境下是绝对不可接受的。这种对现代语言特性和安全实践的刻意回避,使得这本书更像是一份历史文档而非一本实用的编程手册。它似乎在告诉读者,真正的“packet C”编程,就是要在最原始、最不安全的条件下,用最底层的汇编思维来操作内存,这与现代软件工程追求的健壮性和可维护性背道而驰。
评分这本名为《packetC Programming》的书籍,着实让我这位资深程序员感到一丝困惑。我原本以为这会是一本关于底层网络编程或者C语言在数据包处理方面的权威指南,毕竟书名如此直白地指向了“packet”和“C”。然而,当我翻开扉页,开始深入阅读时,发现它似乎更像是一本偏向于嵌入式系统或实时操作系统(RTOS)中如何管理和优化内存分配的教材。书中花了大量的篇幅讨论了静态内存池的设计、动态内存碎片整理的算法,以及如何使用原子操作来确保多线程环境下的内存安全。对于一个期望学习TCP/IP协议栈实现或者Socket编程的读者来说,这种侧重于内存管理而非数据流处理的内容,无疑是一种方向上的偏差。特别是其中关于如何利用指针算术来绕过标准库函数,以追求极致性能的章节,虽然技术细节扎实,但对于初学者而言,门槛过高,也偏离了“packet”这个主题所暗示的网络通信应用场景。我期待的是如何高效地解析以太网帧或IP头部,而不是如何手工管理一个循环缓冲区。这种内容上的错位感,让我在阅读过程中不断地产生“我是否拿错了书”的疑问,对期待中的网络编程知识的满足度极低。
评分略
评分略
评分略
评分略
评分略
本站所有内容均为互联网搜索引擎提供的公开搜索信息,本站不存储任何数据与内容,任何内容与数据均与本站无关,如有需要请联系相关搜索引擎包括但不限于百度,google,bing,sogou 等
© 2026 qciss.net All Rights Reserved. 小哈图书下载中心 版权所有