Skip to main content

Lab1 - Code Review Lab

comparison of two open source software packages

Before this lab, I would say I don't have a clear concept of open source, that make me spend an amount of time to understand the stuff like open source license, Github, and Bugzilla etc.
After researching, I chose the following two of open source software:

Android
Android is a mobile operating system developed by Google, based on a modified version of the Linux kernel and other open source software and designed primarily for touchscreen mobile devices.
License: Apache License 2.0

There is an account called aosp-mirror on Github, which provides a read-only mirror of some of the most common repository from the Android Open Source Project. That makes us able to view the source code and the modified versions of the project, it's the same as any other GitHub's repository.
In order to contribute, the developer will need to follow the specific way of submitting bugs and patches.
https://source.android.com/setup/contributing

FireFox
FireFox is a free and open source web browser developed by Mozilla Foundation and its subsidiary, Mozilla Corporation.
License: MPL 2.0

Firefox also has a Github account called Mozilla, which provides source code for developers.
Another way of contributing Firefox is to fix the bug from Bugzilla. I found a record of Bug 950644, title "Multiple Contact Selection Screen for SMS, Email application"
That's a bug in 4 years ago, total 19 people invoked. In Bugzilla, people could post the opinion of the specific bug on the page, and communicate with other developers who want to contribute. But the disadvantage is that when we want to see the code from the others, we will have to download the attach every time, unlike Github, we can easily go through the code on up there.

Comments

Post a Comment

Popular posts from this blog

Lab 3

In this lab, we are going to use Assembly language to finish 3 parts. 1. As we are getting familiar with Assembly language, we will create a loop in Assembly to prints out 10 times of "Hello World!". This part is quite easy to do it, here is the source code for x86_64 assembler: ------------------------------------------------------ .text .globl    _start start = 0                       /* starting value for the loop index; note that this is a symbol (constant), not a variable */ max = 10                        /* loop exits when the index hits this number (loop condition is i<max) */ _start:     mov     $start,%r15         /* loop index */     mov     %r15,%r10 loop:         /* ... body of the loop ... do something useful here ... */   ...
Post a Comment
Read more

SPO600 - Project - Stage One

In our final project, the project will split into 3 stages. This is the first stage of my SPO600 course project. In this stage, we are given a task to find an open source software package that includes a CPU-intensive function or method that compiles to machine code. After I chose the open source software package, I will have to benchmark the performance of the software function on an AArach64 system. When the benchmark job is completed, I will have to think about my strategy that attempts to optimize the hash function for better performance on an AArch64 system and identify it, because those strategies will be used in the second stage of the project. With so many software, I would say picking software is the hardest job in the project, which is the major reason it took me so long to get this post going. But after a lot of research, I picked a software called SSDUP , it is a traffic-aware SSD burst buffer for HPC systems. You can find the source code over here: https://github.com/CGC...
Post a Comment
Read more

Lab 5

In this lab, we are going to use different approaches to scale volume of sound, and the algorithm’s effect on system performance. Here is some basic knowledge of digital sound: Digital sound is usually represented by a signed 16-bit integer signal sample, taken at a rate of around 44.1 or 48 thousand samples per second for one stream of samples for the left and right stereo channels. In order to change the volume of sound, we will have to scale the volume factor for each sample, the range of 0.00 to 1.00 (silence to full volume). Here is the source code I got from professor: (vol1.h) ------------------------------------------------- #include <stdlib.h> #include <stdio.h> #include <stdint.h> #include "vol.h" // Function to scale a sound sample using a volume_factor // in the range of 0.00 to 1.00. static inline int16_t scale_sample(int16_t sample, float volume_factor) { return (int16_t) (volume_factor * (float) sample); } int main() { // Al...
Post a Comment
Read more