advanced programming in unix environment

UNIX advanced environment programming (13) signal, unix programming 13 Signal The signal is Soft Interrupt. Signals provide an asynchronous way to process events. For example, you can press the End Process key on the terminal to terminate a process in advance. 1. Concept of Signal Each signal has a name whose names are

. Basic System data type:The header file There are many more of these data types defined in other header files. In the header file, these data types are defined with the TypeDef functionality of C, and most of them end with _t.Once these data types have been defined in this way, it is no longer necessary to consider the system-specific implementation details.Conflicts between the standards:On the whole, these different standards are very well matched. However, there are some differences between

(10) learning together the thread control of advanced programming in Unix environment (APUE), and advanced programming apue . . . . . Directory (1) learning standard IO for advanced programming in Unix

1 exit function and _exit function#include void exit (int status)void _exit (int status)The difference between these two functions is that the exit function performs cleanup before entering the kernel (cleanup I/O buffering), and the_exit function goes directly into the kernel 2 atexit function, register function, execute at exit int atexit (void (* func) (void));The functions that are registered are called termination handlers, which are called in the reverse order of registration, and are cal

"UNIX Environment Advanced Programming" has a lot of code in the process of learning, you need to actually write these code, debugging run. The author refers to the #include "apue.h" in the dock file, which contains the common header files and some custom functions, we have to be able to complete their configuration, the test machine in this paper is ubuntu16.04.

This is written by Csdn Linux Moderator: "Linux Programming"-> "Linux Advanced Programming"-"UNIX Environment Advanced Programming" It can be said that this order represents the general Linux Program Ape Learning Path, "Linux programming" content comprehensive, easy to start, suitable for beginners to learn more ab

.....Directory(i) Learn the Unix Environment Advanced Programming (APUE) Standard IO(ii) Study of UNIX Environment Advanced Programming (APUE) file IO(iii) Learn about the Unix

1. How to view signal correlation function Mans Signal See ALSO (My Os:ubuntu 14.) 04 64-bit) ALSO Kill (1), Alarm (2), Kill (2), KILLPG (2), pause (2), sigaction (2), sig‐ NALFD (2 ), sigpending (2), Sigprocmask (2), Sigsuspend (2), bsd_signal (3), raise (3), Siginterrupt (3), Sigqueue (3), Sigsetops (3), Sigvec (3), sysv_signal (3), Signal (7) Of course, the next notes are programmed in the UNIX

UNIX Environment Advanced Programming environment configuration 1. Download Apue.tar.gz Package TAR-ZXVF apue.tar.gz cdapue.3e Make If error: Can,tfind-lbsd Solution: Sudoapt-get Install Libbsd-dev 2. Then re-make (again) 3. On the basis of successful compilation, install Apue.h file and its

One, wait () functionWhen you call the Wait () function in a process(1) If all of its subroutines are still being executed, the blockage(2) Assume that a child process has been terminated. Waits for the parent process to get its terminating state.(3) If there are no child processes, an error is returned.In the following instance. Call Wait () in the parent process, assuming that the child process has not completed yet, and then calls itself into the blocked state.Wait for the child process to fi

One, wait () functionWhen you call the Wait () function in a process(1) If all of its subroutines are still running, block(2) If a child process is terminated, wait for the parent process to get its terminating state.(3) If there are no child processes, an error is returned.In the following instance, wait () is called in the parent process, and if the child process has not finished running, it calls itself into a blocking state.After the child process has finished running, the child process's re

process ID of the child is the parent; The parent process ID of the parent doesn ' t change. The child's Tms_utime, Tms_stime, Tms_cutime, and tms_cstime values are set to 0 (this times are discussed in section 8.1 7). File locks set by the "parent are not inherited by the" child. Pending alarms are cleared for the child. The set of pending signals for the "the" Child is set to the empty set. There are two uses for fork: 1.When a process wants to duplicate itself so, the parent and the child ca

null, Fmemopen allocates memory based on size, and the memory allocated by Fmemopen is automatically freed when the stream is closed; The parameter type controls the functionality of the stream. The possible values and effects are shown in the following table ?7 SummaryThe standard IO function library is used by most UNIX applications.When using, notice where buffer is used for processing, as this is a confusing place.??Resources:"