I need to retrieve process information in a C/C++ program. I need at least basic things like CPU% and memory usage, but additional details would be useful as well. The problem is that I need to use this information in a portable program, that will run on multiple platforms: windows, linux, MAC and possibly Solaris too. Is there a libra...
Hi guys we are on the way to start developing a big web platform. For db server we choosen postgresql. Would you suggest an OS for the postgresql server (we are looking for the maximum performance)? Thanks P.S. sorry for the bad english ...
I am building a DEV image and am currently planning to use Windows XP Pro x64 as my O/S. Is there any reason to use a Server O/S as a development operating system or is XP the best choice right now? ...
Suppose you have an HTML document with non-breaking spaces ( ). In IE 6 - 8 running on Windows XP, when you select the non-breaking spaces and copy/paste them, they will be copied/pasted as "normal" spaces (U+0020). Does anyone know of any systems, browsers, etc., or combinations of, that will not exhibit this behavior. That is, th...
is there a relationship between kernel/user thread? some OS textbook said that "maps one(many) user thread to one(many) kernel thread",what does map means here? ...
I have a Wix installer which should be allowed to run on Windows Server 2008 but not on Vista. According to Microsoft's Operating System Properties page, this is not possible using the parameters they provide for this purpose (VersionNT and WindowsBuild). Has anyone solved this problem or know how to solve it? Thanks! ...
How to get a fully qualified path to MS Explorer in .NET? The path will be used to launch a new instance of MS Explorer with some command line parameters. ...
From wikipedia: "Segmentation cannot be turned off on x86 processors, so many operating systems use a flat memory model to make segmentation unnoticeable to programs. For instance, the Linux kernel sets up only 4 segments" I mean since protection is already taken care of by the virtual memory subsystem (PTEs have a protec...
This might be in vain, as I know writing an operating system is unbearably complicated (especially by oneself). I don't expect to build the next linux, or windows. I know it will be horrible, and buggy, and won't work, but that's fine. I want to write everything myself, in assembly, C, and (some) C++. This is a future project, as I'm...
I've heard that mixing forking and threading in a program could be very problematic, often resulting with mysterious behavior, especially when dealing with shared resources, such as locks, pipes, file descriptors. But I never fully understand what exactly the dangers are and when those could happen. It would be great if someone with expe...
Well the title does the explaination. Which one is faster PHP/MySQL on Linux or on Windows. Question 1 I know that MySQL is slower on Windows, because i tried to run a C++ program on Windows to access MySQL, it took a year every time it had to open a connection. When i ported the exact copy into the linux enviornment it was lightning f...
Is there any specific sectors of Software Engineer/Computer Science where there's a marked difference when developing for 64 bit systems? I've been coding for around 10 years now, and since the break of 64 bit systems, my code hasn't changed one bit. What applications that a single coder can code as a side project require you to use 64...
Inspired by this question http://stackoverflow.com/questions/1237489/how-can-i-force-gdb-to-disassemble I wondered about the INT 21h as a concept. Now, I have some very rusty knowledge of the internals, but not so many details. I remember that in C64 you had regular Interrupts and Non Maskable Interrupts, but my knowledge stops here. C...
I've been wondering how scanf()/printf() actually works in the hardware and OS levels. Where does the data flow and what exactly is the OS doing around these times? What calls does the OS make? And so on... ...
Are assembly language and machine language (for the same underlying system) really the same? Are there any differences between these two concepts? ...
I remember hearing that for performance a development machine should be 32 bit, while servers should be 64 bit. I think it was Richard Campell on Dot Net Rocks! that mentioned this. Why would 32-bit be faster than the 64-bit for a development box and vice versa for servers? ...
I want to split $path = getenv('PATH'); into its components. How do I determine the separator char in an os-dependent fashion? ...
Would like to understand how to build a tool like the mac os dash board widget (web clip). Am looking at trying to build it with webkit but not sure if thats the right way to go. Some thoughts were to using webkit and some DOM to display only the viewport that a user requests. While this works so well on mac os, am trying to build it...
I've heard the term "Tickless OS" thrown around. What does it mean? Which OSes are tickless? How does it differ from a non-tickless (tickful?) OS? ...
I know that on Symbian stack size is equal to 8k. What about BlackBerry? ...