advanced linux programming mark mitchell pdf

... special type sig_atomic_t. Linux guarantees that assignments to variables of this type are per- formed in a single instruction and therefore cannot be interrupted midway. In Linux, sig_atomic_t is ... in Chapter 5, “Interprocess Communication,” but fortunately Linux does this for you, using signals. When a child process terminates, Linux sends the parent process the SIGCHLD signal. The default ... Processes 3.2.3 Process Scheduling Linux schedules the parent and child processes independently; there’s no guarantee of which one will run first, or how long it will run before Linux interrupts it and...

Ngày tải lên: 26/01/2014, 07:20

... 272 Other Development Tools A DEVELOPING CORRECT, FAST C OR C++ GNU /LINUX PROGRAMS requires more than just understanding the GNU /Linux operating system and its system calls. In this appendix, we ... erroneous programming constructions. By eliminating such constructions, you’ll reduce the risk of program bugs, and you’ll find it easier to compile your programs on different GNU /Linux variants ... dynamic memory error, use mtrace during initial development.The program is available on all GNU /Linux systems and has been well tested. After ensuring that the number of allocations and deallocations...

Ngày tải lên: 21/01/2014, 07:20

... main.o reciprocal.o 02 0430 CH01 5/22/01 10:19 AM Page 10 Advanced UNIX Programming with Linux I 1 Getting Started 2 Writing Good GNU /Linux Software 3 Processes 4 Threads 5 Interprocess Communication 01 ... is outdated. To help you navigate, here are the most useful sources of information about advanced Linux programming. 6. Some people have commented that saying break main is a little bit funny ... complication of C++ programming. We also assume that you know how to perform basic operations in the Linux command shell, such as creating directories and copying files. Because many Linux programmers...

Ngày tải lên: 21/01/2014, 07:20

... of a string describing the Linux kernel version number. It contains the version information that would be obtained by the uname system call, described in Chapter 8, Linux System Calls,” in Section ... contents is with the cat command. % cat /proc/version Linux version 2.2.14-5.0 (root@porky.devel.redhat.com) (gcc version egcs-2.91. 66 19990314 /Linux (egcs-1.1.2 release)) #1 Tue Mar 7 21:07:39 ... interested in exactly how /proc works, take a look at the source code in the Linux kernel sources, under /usr/src /linux/ fs/proc/. 7.1 Extracting Information from /proc Most of the entries in...

Ngày tải lên: 26/01/2014, 07:20

... info Many GNU /Linux programs come with documentation in plain text or HTML formats as well. Happy GNU /Linux programming! 13 0430 CH11 5/22/01 10:46 AM Page 256 244 Chapter 11 A Sample GNU /Linux Application While ... the client displays the current time. 11.3.2 Show the GNU /Linux Distribution The issue.so module (see Listing 11.7) displays information about the GNU /Linux distribution running on the server.This information ... UNIX Network Programming, Volume 1: Networking APIs—Sockets and XTI, by W. Richard Stevens (Prentice Hall, 1997), for more information. 1.The most popular open source Web server for GNU /Linux is the...

Ngày tải lên: 17/10/2013, 19:15

... descriptor may cause Linux to take a particular action, depending on the nature of the file descriptor. For example, when you close a file descriptor for a network socket, Linux closes the network ... the file descriptor, Linux automatically expands the file to make room for the new data. If you position a file descriptor beyond the end of a file and then write to it, Linux first expands the ... Notepad, display all the text in a GNU /Linux text file on a single line because they expect a carriage return at the end of each line. Other programs for both GNU /Linux and Windows that process text...

Ngày tải lên: 21/01/2014, 07:20

... kill command. SIGCHLD Linux sends a process this signal when a child process exits. See Section 3.4.4,“Cleaning Up Children Asynchronously,” in Chapter 3,“Processes.” SIGXCPU Linux sends a process ... signal at a later time. See Section 8.13, “ setitimer: Setting Interval Timers,” in Chapter 8, Linux System Calls,” for information about setitimer, a generalized version of alarm. SIGTERM This ... 302 Appendix C Table of Signals SIGINT Linux sends a process this signal when the user tries to end it by pressing Ctrl+C. SIGILL A process...

Ngày tải lên: 21/01/2014, 07:20

... for GNU /Linux. This site is one of the best places to stay abreast of the newest releases of GNU /Linux software, from core system components to more obscure, specialized applications. m http://www.linuxsecurity.com ... message. n http://www.kernel.org is the primary site for distribution of the Linux kernel source code. For the trickiest and most technically detailed questions about how Linux works, the source code is the best place to ... the Documentation directory for explanation of the kernel internals. n http://www.linuxhq.com also distributes Linux kernel sources, patches, and related information. n http://gcc.gnu.org is the...

Ngày tải lên: 21/01/2014, 07:20

Ngày tải lên: 21/01/2014, 07:20

Ngày tải lên: 21/01/2014, 07:20

... GNU /Linux system in certain ways. GNU/ Linux provides other ways for interacting with the operating environment, too. 03 0430 CH02 5/22/01 10:20 AM Page 17 22 Chapter 2 Writing Good GNU /Linux ... <unistd.h> continues 03 0430 CH02 5/22/01 10:20 AM Page 35 Writing Good GNU /Linux Software 2 THIS CHAPTER COVERS SOME BASIC TECHNIQUES THAT MOST GNU /Linux program- mers use. By following the guidelines presented, ... guidelines presented, you’ll be able to write programs that work well within the GNU /Linux environment and meet GNU /Linux users’ expec- tations of how programs should operate. 2.1 Interaction With...

Ngày tải lên: 21/01/2014, 07:20

... created. For most GNU /Linux application programming tasks, only one thread attribute is typically of interest (the other available attributes are primarily for specialty real-time programming) .This ... returns, the thread exits. On GNU /Linux, thread functions take a single parameter, of type void*, and have a void* return type.The parameter is the thread argument: GNU /Linux passes the value along ... instructions following the call. Meanwhile, the new thread begins executing the thread function. Linux schedules both threads asynchronously, and your program must not rely on the relative order...

Ngày tải lên: 26/01/2014, 07:20

... other processes. If you don’t specify this flag, Linux may buffer writes before transferring them to the file. Alternatively, you can force Linux to incorporate buffered writes into the disk ... specifies where in your process’s address space you want to map the shared memory; if you specify NULL, Linux will choose an available address.The third argument is a flag, which can include the following: n SHM_RND ... programs, this is more convenient and may also run faster than explicit file I/O operations. One advanced and powerful technique used by some programs is to build data structures (ordinary struct...

Ngày tải lên: 26/01/2014, 07:20

... Mastering Linux II 6 Devices 7 The /proc File System 8 Linux System Calls 9 Inline Assembly Code 10 Security 11 A Sample GNU /Linux Application 07 0430 PT02 5/22/01 10:34 AM Page 127 Devices 6 LINUX, ... on. Major device numbers are listed in the Linux kernel sources documentation. On many GNU /Linux distributions, this documentation can be found in /usr/src /linux/ Documentation/devices.txt.The special ... Special Devices Linux also provides several character devices that don’t correspond to hardware devices.These entries all use the major device no. 1, which is associated with the Linux kernel’s...

Ngày tải lên: 26/01/2014, 07:20

... operating system (such as Linux) . n release, version—The Linux kernel release number and version level. n machine—Some information about the hardware platform running Linux. For x86 Linux, this is i386 ... provided with GNU /Linux systems) wraps Linux system calls with functions so that you can call them easily. Low-level I/O functions such as open and read are examples of system calls on Linux. 10 0430 ... 180 Chapter 8 Linux System Calls An advanced technique to monitor memory access is to protect the region of memory using mmap or mprotect and then handle the SIGSEGV signal that Linux sends to...

Ngày tải lên: 26/01/2014, 07:20

Ngày tải lên: 26/01/2014, 07:20

Ngày tải lên: 26/01/2014, 07:20

Ngày tải lên: 26/10/2014, 20:02

Ngày tải lên: 26/10/2014, 20:02