在某些时刻,几乎所有的程序员都要与其程序所处操作系统中的系统调用和程序库打交道。本书主要讨论如何编写Linux系统软件——代码位于底层,并且直接跟内核及核心系统程序库对话。《Linux系统编程》描述了使用标准接口包括使用Linux独有的**接口时,在功能和性能之间如何进行权衡取舍的策略。
该书同样也是一本内行人士编写灵活**代码的学习指南。作为内核黑客和本书的作者,RobertLove不仅阐释了系统接口应该如何工作,还介绍了它们实际上是如何工作的,以及怎样**有效地使用它们。《Linux系统编程》包含了帮助你在任何层面编写更佳代码的实用技巧。
本书主题包括:
读写文件以及其他文件I/O操作,包括Linux内核如何实现和管理文件I/O,内存映射与优化技术;
进程管理的系统调用,包括实时进程;
文件与目录——创建、移动、复制、删除和管理;
内存管理——内存分配接口,管理内存,以及优化内存访问;
信号及其在unix系统中的角色,以及基本和**信号接口;
时间、休眠和时钟管理,从基础开始讲述,并且涵盖POSIX时钟和高精度计时器拥有《Linux系统编程》,你将从

Foreword
Preface
1. Introduction and Essential Concepts
System Programming
APIs and ABIs
Standards
Concepts of Linux Programming
Getting Started with Syster~ Programming
2. File I/O
Opening Files
Reading via read( )
Writing with write( )
Synchronized I/O
Direct I/O
Closing Files
Seeking with lseek( )
Positional Reads and Writes
Truncating Files
Multiplexed I/O
Kernel Internals
Conclusion
3. Buffered I/0
User-Buffered I/0
Standard I/0
Opening Files
Opening a Stream via File Descriptor
Closing Streams
Reading from a Stream
Writing to a Stream
Sample Program Using Buffered I/0
Seeking a Stream
Flushing a Stream
Errors and End-of-File
Obtaining the Associated File Descriptor
Controlling the Buffering
Thread Safety
Critiques of Standard I/0
Conclusion
4. Advanced File I/0
Scatter/Gather I/O
The Event Poll Interface
Mapping Files into Memory
Advice for Normal File I/O
Synchronized, Synchronous, and Asynchronous Operations
I/O Schedulers and I/O Performance
Conclusion
5. Process Management
The Process ID
Running a New Process
Terminating a Process
Waiting for Terminated Child Processes
Users and Groups
Sessions and Process Groups
Daemons
Conclusion
6. Advanced Process Management
Process Scheduling
Yielding the Processor
Process Priorities
Processor Affinity
Real-Time Systems
Resource Limits
7. Fileand Directory Management
Files and Their Metadata
Directories
Links
Copying and Moving Files
Device Nodes
Out-of-Band Communication
Monitoring File Events
8. Memory Management
The Process Address Space
Allocating Dynamic Memory
Managing the Data Segment
Anonymous Memory Mappings
Advanced Memory Allocation
Debugging Memory Allocations
Stack-Based Allocations
Choosing a Memory Allocation Mechanism
Manipulating Memory
Locking Memory
Opportunistic Allocation
9. Signals
Signal Concepts
Basic Signal Management
Sending a Signal
Reentrancy
Signal Sets
Blocking Signals
Advanced Signal Management
Sending a Signal with a Payload
Conclusion
10. Time
Time's Data Structures
POSIX Clocks
Getting the Current Time of Day
Setting the Current Time of Day
Playing with Time
Tuning the System Clock
Sleeping and Waiting
Timers
Appendix. GCC Extensions to the C Language
Bibliography
Index