I have heard that 'better-fit' is pretty commonly used, but I don't seem to read much about it online. What are the most commonly used / thought to be the most efficient policies used by heap allocators. (I admit my vocabulary may be flawed; when I say 'policy' i mean things such as 'best fit,' 'first fit,' 'next fit,' etc) Edit: I am ...
I've been reading up a lot lately on comparisons between Python and a bunch of the more traditional professional languages - C, C++, Java, etc, mainly trying to find out if its as good as those would be for my own purposes. I can't get this thought out of my head that it isn't good for 'real' programming tasks beyond automation and macro...
I have the following requirements for a data structure: Direct access to an element with the help of a key (Key will be an integer, range is also same as integer range) Avoid memory allocation in chunks (Allocate contigous memory for the data structure including the data) Should be able to grow the data structure size dynamically Whi...
Hi, I am in a real fix. Please help. Its urgent. I have a host process that spawns multiple host(CPU) threads (pthreads). These threads in turn call the CUDA kernel. These CUDA kernels are written by external users. So it might be bad kernels that enter infinite loop. In order to overcome this I have put a time-out of 2 mins that will ...
Hi, We need to write a email validation program in C. We are planning to use GNU Cregex.h) regular expression. The regular expression we prepared is [a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])? But the below code is failing while compiling the r...
i need to clear the data on serial port when i have read the data from it before i read the data again? i m using c/c++ on windows xp how can i do so ? thanx in advance. ...
Possible Duplicate: What is faster/prefered memset or for loop to zero out an array of doubles The following code uses memset to set all the bits to zero int length = 5; double *array = (double *) malloc(sizeof(double)*length); memset(array,0,sizeof(double)*length); for(int i=0;i<length;i++) if(array[i]!=0.0) fprintf(st...
I'm using swprintf to build a string into a buffer (using a loop among other things). const int MaxStringLengthPerCharacter = 10 + 1; wchar_t* pTmp = pBuffer; for ( size_t i = 0; i < nNumPlayers ; ++i) { const int nPlayerId = GetPlayer(i); const int nWritten = swprintf(pTmp, MaxStringLengthPerCharacter, TEXT("%d,"), nPlayerId);...
The Solution that we work on here includes 1 project in C# and another project in C. Is there any way to debug c code in Visual Studio? ...
Does anyone tell me how to block some specific system calls within a program, please? I am building a system which takes a piece of C source code, compiles it with gcc and runs it. For security reasons, I need to prevent the compiled program from calling some system calls. Is there any way to do it, from the source code level (e.g. strip...
I need to modify a GLib's time-out interval while it is in execution. Is that possible? I took a look to the source code and it seems possible to me, but is required use some non-public functions from GLib internals. Should I reimplement GTimeoutSource or there are a way to do it? ...
i want to read serial port when there is some data present i mean on the event when data arrives only then i will read serial port instead of continuously reading the port i have this code for continuous reading the port how can i make it event based. thanx in advance. while(1) { bReadRC = ReadFile(m_hCom, &byte, 6, &iBytesRead, NUL...
Under the /usr/include directory in Linux i entered the command: find -type f -name unistd.h which gave the following output: ./unistd.h ./linux/unistd.h ./asm-generic/unistd.h ./bits/unistd.h ./asm/unistd.h ./sys/unistd.h my question is, what is the purpose of each unistd.h, since there is only one definiton of that file in the single...
How to count total number of digits from a given positive number without looping in C? ...
Possible Duplicates: Why is goto poor practise? GOTO still considered harmful? Hi, I have read in many book that using goto is bad programming practice, why is it so? thanks Yogesh ...
Consider the following macro definitions and invocation: #define x x[0] #define y(arg) arg y(x) This invocation expands to x[0] (tested on Visual C++ 2010, g++ 4.1, mcpp 2.7.2, and Wave). Why? Specifically, why does it not expand to x[0][0]? During macro replacement, A parameter in the replacement list...is replaced by the cor...
I am writing a sliding window compression algorithm (LZ77) that searches for phrases in a "moving" dictionary. So far I have written a BST where each node is stored in an array and it's index in the array is also the value of the starting position in the window itself. I am now looking at transforming the BST to an AVL tree. I am a lit...
Hi guys, the question is: suppose I have an input function like sin(2-cos(3*A/B)^2.5)+0.756*(C*D+3-B) specified with a BNF, I will parse input using recursive descent algorithm, and then how can I use or change Dijkstra’s algorithm to handle this given function? I need to execute it with sin | cos | sqrt | ln, where Dijkstra’s algorithm ...
In C# (.Net) you can create a panel and set autoscroll to true. you can then add controls into it, including beyond it's size, then it will scroll. I was wondering if when using the real WinAPI in c++ (not .net) how one could acheive the same result. Must I keep track of the controls inside and move them all when I scroll or is there a...
Just curious on why a param has to be a const in operation overloading CVector& CVector::operator= (const CVector& param) { x=param.x; y=param.y; return *this; } couldn't you have easily done something like this ?? CVector& CVector::operator= (CVector& param) //no const { x=param.x; y=param.y; return *this; } Isn't when...