I have a simple code to test the fork() function. It didn’t work as I expected. My expectation is: parent’s result and child’s result appear alternately. Can someone explain this and teach me how to fix it? Thanks! Answer The explanation is simple. Scheduling of processes is up to the kernel…
Tag: linux
How to understand the ARM registers dumped by kernel panic?
After Linux kernel oops on ARM platform, registers are dumped to console. But I got confused with analyzing these registers. For example, Questions: What does the 0xc0705970 stands for in SP: 0xc0705970:? Code address or data address? Where to find it? Why sp : c07059f0 is not at the beginning or end of SP re…
How fork() function works in this program?
I’m having some trouble with this program. I know what a fork() function does. It is used to create a new process from an existing process. The new process is called the child process, and the existing process is called the parent. The parent returnes the child’s pid and the child returns 0. That …
android studio : linux, windows, and poor performances [closed]
Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 7 years ago. Improve this question I am starting an Android application. I am very comfortable with .NET…
Unix – Uncomment xml comments
I have below node from XML file. How do I uncomment the first occurrance of mainHost using Unix shell script or commands? I have tried with below command with different variations but that does not seem to work. sed ‘0,/<!– /{s/<!– //}’ /test.xml I am expecting below output Thank…
sorting takes 2 hours on vagrant – approx 100m lines
What can I do to optimize this sort? I am running: and then: getting the following output: here’s the datatset that I am using: a preview of the original dataset: here are the details on the vagrant machine: What can I do to optimize this sort? Answer Split your data into several files, sort each file i…
Webrtc2sip: error adding symbols: DSO missing from command line
I am trying to compile following code webrtc2sip but getting following error. Edit: I have tried following option in Makefile but no luck 🙁 Answer Solution: Finally find it, used following option and it works!
make: Nothing to be done for `all’. when i tried to compile
this is the code of my make file AND I HAVE FEW QUESTIONS we save C language file with extension *.c so for Makefile which extension should we use? When i throw command in terminal “make” it gives me error that make: Nothing to be done for `all’. Answer Probably the file all already exists. …
Appium ERROR dump failed because assets could not be loaded: Invalid file Support
I am using Linux and I want to write tests using Appium. At the moment I installed all required tools to run it (Node is installed not through brew install node, but using nvm install node). Appium is running on localhost (Welcome to Appium v1.4.6 info: Appium REST http interface listener started on 0.0.0.0:4…
Why is a multithreaded C program forced to a single CPU on Mac OS X when system() is used in a thread?
I encountered a strange difference in the behavior of a program using pthreads between Linux and Mac OS X. Consider the following program that can be compiled with “gcc -pthread -o threadtest threadtest.c”: Running the resulting executable on a 4-core Mac OS X machine results in the following beha…