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UNIX/Linux Programming - October 2012 (Page 2)

ofstream close hangs for large files

I'm running a single-threaded application on RHEL 6.1. This process uses a std::ofstream object to log incoming data to a file. Every 24 hours, the file is cycl...

[no replies]

by bievis

NCurses : scrolling a window

Hello everybody, I'm trying to develop a terminal simulator, and I had add scrolling functionality, with the wscrl() function and activate it with scrollok()...

[1 reply] : I think you need to call wsetscrreg and idlok also. The man page says... (by codewalker)

by aliprf

play array of bytes in ubuntu

hi all I wanna play array of bytes with c++ how can I do that? using "ioctl" or "ioprt" , can help me?

[4 replies] Last: Hello, I Play It... (by RhondaSmall)

by srbbff

Wrap around clock()

Hi all, I am trying to measure the CPU time of a program using clock(). But when it takes a certain amount of time to run the code, the time consumption become...

[6 replies] Last: OK, in that case use getrusage() http://linux.die.net/man/2/getrusag... (by ne555)

by Darker

Docs for socket functions

Hello, I've just begun creating simple C++ server for linux. I've based my server on example on the internet but now I can't actually find any docs for functio...

[4 replies] Last: Hello, thank you very much, you've helped me to move forward. Now, tim... (by Darker)

by Andile ACZO Zola

how to build my own linux destro

hi yall,i wanna build my own Linux OS,but i dont know where to start should i download an already existing destro or what? please help i need the first few step...

[4 replies] Last: lfs http://www.linuxfromscratch.org/~bdubbs/view.php?sysid=418 (by evefree2)

by nosecool

what's the difference between 'ip addr add' and 'ifconfig eth0:1'

There are two ways to config more IP addr on a dev: 1. ip addr add 2. ifconfig ethn:m I want to know the difference in source code layer. Following is what I...

[2 replies] Last: yes, on Linux. (by nosecool)

by vijirin

Forked process not returning to terminal

Dear All, I wrote a sample c++ program which forks a linux application (kcalc). I compiled this program using g++ and executed it. The kcalc application is l...

[2 replies] Last: > After closing the kcalc application using the quit button I am not g... (by ne555)

by ResidentBiscuit

pthreads question

So I've got a programming assignment that just multiplies two matrices together, and stores the result in a third. Supposed to be done using threads, but I have...

[5 replies] Last: I've used the link that Grey Wolf provided for threading before. Abso... (by MrHutch)

by shazlin

unix programming(memory problem i think)

In my program, the parent create processes and the child compute the sum The problem is the parent code so for example if going to computer 1 2 3 4 5 it goin...

[6 replies] Last: Thank You guys Learn one more thing hehe (by shazlin)

by charmingcow

Find a solution for invoid the programe coredump

Hi , Recently,our program has coredump twice unfortunately. It developed by the c++ and run in the SUSE linux platform. After it coredump,I check and researc...

[2 replies] Last: Did you take a look at the call stack? (by kbw)

by bievis

NCurses : string capture with special keys

Hi everybody, i'm developing a small terminal simulator, and I need to capture a string and special keys at same time but i'm not able to capture these special ...

[2 replies] Last: First, thanks for the reply And second, I seem rare than it doesn't e... (by bievis)

by Germinx

Unreachable code in string header (basic_string.h). Why? How can I fix it?

Hello community. I'm using g++ with the -Wunreachable-code and the -Wfatal-errors -Werror options enabled to compile a piece of code, but... when I use the...

[6 replies] Last: Warnings are still there with a debug build. Looking at the sources ... (by Germinx)

by ThePsyjo

Sniff stdin

Hi, I'm need build a shell-wrapper for logging any input on a shell. The only problem I have is that i cant read stdin twice. My wrapper creates a pthrea...

[10 replies] Last: Were you able to post your modifications to script.c? I don't really... (by ThePsyjo)

by Pooky

Ncurses - two characters

Hi guys, I have little bit problems with ncurses. Recently I have to solve problem with non-asci characters and it was really horible. I found many articl...

[1 reply] : getch() gets a char, which represents ASCII range for UTF characters y... (by codewalker)

by vijkrr

ABR for new in purify C++

Code : vector<char> ab; //Assume it may or may not have data. size = ab.size(); char* ch = NULL; if ( size > 0 ) { ch = new ch(size); // Purify is...

[2 replies] Last: yes its ch = new char ; (by vijkrr)

by prw8864

unexpected results with ofstream

The following file should take the contents of input_file and concatenate it to out_file. But when I run it out_file and the collection (tmpO) file are empty. ...

[5 replies] Last: Ok, thanks Peter. ThingsLearnt++; (by TheIdeasMan)

by Aramil of Elixia

ios apps

so this is a mac question but im in the unix area anyways. so i have an app making book but its out of date. how do i make iOS 5 apps on xcode 4.4?

[3 replies] Last: https://developer.apple.com/programs/register/ (by closed account z05DSL3A)

by ResidentBiscuit

Script that continually calls a program

I'm trying to write a little script that will start up a program, and then start up a new instance of it, and then again, and so on until I tell it to start. I'...

[3 replies] Last: Yes, exactly. (by slumpers)

by kenter13

Thread ID problem

Hello In my software, i get the id of a thread when i create it, with pthread_create( &thread , NULL, threadRun, this); curThreadID = thread ; then in t...

[3 replies] Last: yeah sure long curThreadID; int NUM_THREADS=2; void *threadRun(voi... (by kenter13)

October 2012 Pages: 123

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