Use shmget to Allocate Shared Memory in C Shared memory is one of the ways of interprocess communication that allows two or more processes to exchange data and communicate fast in user-space. Shared memory impl
a separate function calledspawnChildthat creates a new process and then callsexecvpto execute the given program. We chose a widely available command line program -topto execute in the child process. Note that the parent process can choose to wait for the child process state changes usingwaitpid...
In this article, we are going to discuss how to use the mmap() function in Linux. So, let’s get started. Header File: #include <sys/mman.h> Syntax: void * mmap (void *address, size_t length, int protect, int flags, int filedes, off_t offset) Arguments: The function takes ...
As the installation and use of XLabs is not self-explaining and there is no clear and easy documentation available right now, I have wrote a document (parallel to implement some functions from XLabs) in the hope, this may help some others like me 😎?
While it is possible to use this style correctly, it is harder: Backticks require escaping when nested, and examples in the wild are improperly quoted more often than not.Not to mention this insidious trick:> x=`echo "This is a doublequote: \""`; echo "$x" This is a doublequote: ...
-->Then use tusc trace it and found PID 15610(samx) in an error loop?root@wudai:[/]#tusc 15596 | more( Attached to process 15596 ("/opt/hpsmh/data/cgi-bin/xlaunch/run.cgis") [64-bit] )waitpid(15597, 0x9fffffffffd6b998, 0) ... [sleeping]Standard input( ...
I am sad to say: gcc8 can't solve the problem. I use gcc-8.3.0 and build it use command follow: ../configure --prefix=/usr/local/gcc-8.3.0 --enable-shared --enable-threads=posix --enable-languages=c,c++,fortran --disable-multilib make && make install when i make the ...
How to use it? When this flag is set, when we usesethostnameto set the new host name, the new process will be in a different host name compared with the parent's process. The example code is below: #define_GNU_SOURCE#include<sys/types.h>#include<sys/wait.h>#include<stdio.h>#inc...
Besides this, it's very important to insert the Firewall (NAT Address) in the DNS, or Sendmail will complain about relay problems. As a rule of thumb, all Hosts or IP-Adresses which will use the Relay-Host must be inserted in Sendmail's DNS or you may encounter relaying problems. The...
As the installation and use of XLabs is not self-explaining and there is no clear and easy documentation available right now, I have wrote a document (parallel to implement some functions from XLabs) in the hope, this may help some others like me 😎?