Robert Love

Linux System Programming (eBook, ePUB)

Talking Directly to the Kernel and C Library

• Format: ePub

Produktbeschreibung

Write software that draws directly on services offered by the Linux kernel and core system libraries. With this comprehensive book, Linux kernel contributor Robert Love provides you with a tutorial on Linux system programming, a reference manual on Linux system calls, and an insiders guide to writing smarter, faster code.Love clearly distinguishes between POSIX standard functions and special services offered only by Linux. With a new chapter on multithreading, this updated and expanded edition provides an in-depth look at Linux from both a theoretical and applied perspective over a wide range of programming topics, including:A Linux kernel, C library, and C compiler overviewBasic I/O operations, such as reading from and writing to filesAdvanced I/O interfaces, memory mappings, and optimization techniquesThe family of system calls for basic process managementAdvanced process management, including real-time processesThread concepts, multithreaded programming, and PthreadsFile and directory managementInterfaces for allocating memory and optimizing memory accessBasic and advanced signal interfaces, and their role on the systemClock management, including POSIX clocks and high-resolution timers

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Produktdetails

• Verlag: O'Reilly Media
• Seitenzahl: 456
• Erscheinungstermin: 14. Mai 2013
• Englisch
• ISBN-13: 9781449341534
• Artikelnr.: 38467835

Autorenporträt

Robert Love has been a Linux user and hacker since the early days. He is active in—and passionate about—the Linux kernel and GNOME desktop communities. His recent contributions to the Linux kernel include work on the kernel event layer and inotify. GNOME-related contributions include Beagle, GNOME Volume Manager, NetworkManager, and Project Utopia. Currently, Robert works in the Open Source Program Office at Google.

Inhaltsangabe

Dedication
Foreword
Preface
Audience and Assumptions
Contents of This Book
Versions Covered in This Book
Conventions Used in This Book
Using Code Examples
Safari® Books Online
How to Contact Us
Acknowledgments
Chapter 1: Introduction and Essential Concepts
1.1 System Programming
1.2 APIs and ABIs
1.3 Standards
1.4 Concepts of Linux Programming
1.5 Getting Started with System Programming
Chapter 2: File I/O
2.1 Opening Files
2.2 Reading via read()
2.3 Writing with write()
2.4 Synchronized I/O
2.5 Direct I/O
2.6 Closing Files
2.7 Seeking with lseek()
2.8 Positional Reads and Writes
2.9 Truncating Files
2.10 Multiplexed I/O
2.11 Kernel Internals
2.12 Conclusion
Chapter 3: Buffered I/O
3.1 User-Buffered I/O
3.2 Standard I/O
3.3 Opening Files
3.4 Opening a Stream via File Descriptor
3.5 Closing Streams
3.6 Reading from a Stream
3.7 Writing to a Stream
3.8 Sample Program Using Buffered I/O
3.9 Seeking a Stream
3.10 Flushing a Stream
3.11 Errors and End-of-File
3.12 Obtaining the Associated File Descriptor
3.13 Controlling the Buffering
3.14 Thread Safety
3.15 Critiques of Standard I/O
3.16 Conclusion
Chapter 4: Advanced File I/O
4.1 Scatter/Gather I/O
4.2 Event Poll
4.3 Mapping Files into Memory
4.4 Advice for Normal File I/O
4.5 Synchronized, Synchronous, and Asynchronous Operations
4.6 I/O Schedulers and I/O Performance
4.7 Conclusion
Chapter 5: Process Management
5.1 Programs, Processes, and Threads
5.2 The Process ID
5.3 Running a New Process
5.4 Terminating a Process
5.5 Waiting for Terminated Child Processes
5.6 Users and Groups
5.7 Sessions and Process Groups
5.8 Daemons
5.9 Conclusion
Chapter 6: Advanced Process Management
6.1 Process Scheduling
6.2 The Completely Fair Scheduler
6.3 Yielding the Processor
6.4 Process Priorities
6.5 Processor Affinity
6.6 Real-Time Systems
6.7 Resource Limits
Chapter 7: Threading
7.1 Binaries, Processes, and Threads
7.2 Multithreading
7.3 Threading Models
7.4 Threading Patterns
7.5 Concurrency, Parallelism, and Races
7.6 Synchronization
7.7 Pthreads
7.8 Further Study
Chapter 8: File and Directory Management
8.1 Files and Their Metadata
8.2 Directories
8.3 Links
8.4 Copying and Moving Files
8.5 Device Nodes
8.6 Out-of-Band Communication
8.7 Monitoring File Events
Chapter 9: Memory Management
9.1 The Process Address Space
9.2 Allocating Dynamic Memory
9.3 Managing the Data Segment
9.4 Anonymous Memory Mappings
9.5 Advanced Memory Allocation
9.6 Debugging Memory Allocations
9.7 Stack-Based Allocations
9.8 Choosing a Memory Allocation Mechanism
9.9 Manipulating Memory
9.10 Locking Memory
9.11 Opportunistic Allocation
Chapter 10: Signals
10.1 Signal Concepts
10.2 Basic Signal Management
10.3 Sending a Signal
10.4 Reentrancy
10.5 Signal Sets
10.6 Blocking Signals
10.7 Advanced Signal Management
10.8 Sending a Signal with a Payload
10.9 A Flaw in Unix?
Chapter 11: Time
11.1 Time's Data Structures
11.2 POSIX Clocks
11.3 Getting the Current Time of Day
11.4 Setting the Current Time of Day
11.5 Playing with Time
11.6 Tuning the System Clock
11.7 Sleeping and Waiting
11.8 Timers
GCC Extensions to the C Language
GNU C
Inline Functions
Suppressing Inlining
Pure Functions
Constant Functions
Functions That Do Not Return
Functions That Allocate Memory
Forcing Callers to Check the Return Value
Marking Functions as Deprecated
Marking Functions as Used
Marking Functions or Parameters as Unused
Packing a Structure
Increasing the Alignment of a Variable
Placing Global Variables in a Register
Branch Annotation
Getting the Type of an Expression
Getting the Alignment of a Type
The Offset of a Member Within a Structure
Obtaining the Return Address of a Function
Case Ranges
Void and Function Pointer Arithmetic
More Portable and More Beautiful in One Fell Swoop
Bibliography
Books on the C Programming Language
Books on Linux Programming
Books on the Linux Kernel
Books on Operating System Design
Index
Colophon