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• linux new/delete, malloc/free large memory blocks

  - by brian_mk

  Hi folks, We have a linux system (kubuntu 7.10) that runs a number of CORBA Server processes. The server software uses glibc libraries for memory allocation. The linux PC has 4G physical memory. Swap is disabled for speed reasons. Upon receiving a request to process data, one of the server processes allocates a large data buffer (using the…

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• Dangling pointers and double free

  - by user151410

  After some painful experiences, I understand the problem of dangling pointers and double free. I am seeking proper solutions. aStruct has a number of fields including other arrays. aStruct *A=NULL, *B = NULL; A = (aStruct*) calloc(1, sizeof(sStruct)); B = A; free_aStruct(A); ... //bunch of other code in various places. ... free_aStruct(B); …

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• Trial vs free with limited functionality

  - by Morten K

  Hi everyone, Not a programming question as such, but a bit more business oriented question about software product development. We have just released a small app, and is offering a free, fully functional trial which lasts for 15 days. I have the gut feeling however, that to reach any kind of penetration on the web, we'd need to offer a…

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• C Programming: malloc and free within a loop

  - by kouei

  Hi all, I just started out with C and have very little knowledge about performance issues with malloc() and free(). My question is as such: if I were to call malloc() followed by free() in a while-loop that loops for, say, 20 times, would it run slower compared to if I were to call free() outside the loop? I am actually using the first…

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• "Arbitrary" context free grammars?

  - by danwroy

  Long time admirer first time inquirer :) I'm working on a program which derives a deterministic finite-state automata from a context-free grammar, and the paper I have been assigned which explains how to do this keeps referring to "arbitrary probabilistic context-free grammars" but never defines the meaning of "arbitrary" in relation to…

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• How does C free() work?

  - by slee

  #include <stdio.h> #include <stdlib.h> int * alloc() { int *p = (int *)calloc(5,4); printf("%d\n",p); return p; } int main() { int *p = alloc(); free(p); printf("%d\n",p); p[0] = 1; p[1] = 2; printf("%d %d\n",p[0],p[1]); } As to the code segment, I allocate 5 ints,first. And then I free the memory. When…

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• How To Customize Your Android Lock Screen with WidgetLocker

  - by Jason Fitzpatrick

  Wouldn’t it be great to use your Android lock screen to turn on your flashlight, jump to your camera, and otherwise make accessing your phone and information on it lightening fast? Read on as we show you how. How To Customize Your Android Lock Screen with WidgetLocker The Best Free Portable Apps for Your Flash Drive Toolkit How…

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• Any free WPF themes?

  - by TimothyP

  Duplicate: Where can I find free WPF controls and control templates? I'm not a designer, so I'm looking for some free WPF themes. Where can I find some good WPF themes?

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• How can I free memory on linux

  - by ogzylz

  When I use top to see memory usage, I see that I have 65gb ram but only 1.3gb of it free. When I ran my program It gives memory insufficiency error. Although no other program is using the remaining 63.7gb ram it is hold. how can I get free the unused ram?

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• List of free hosted domains (phishing prevention)

  - by nigative

  Does anyone has a compiled list of free hosting domains? On the website, when user clicks on external link I want them to be redirected to my page that will check if that external link is on free hosting or not. If it is, I want to warn the user, but right now I can't find a list of such domains. Any help?

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• Hudson Free Temp Space location

  - by Kevin

  Hi I have just installed Hudson on a Weblogic server and I am having issues with the nodes going off line due to the Free Temp Space falling below the 1gig threshold. Now I have checked my /tmp folder (thinking Hudson uses that) but it is sitting at 10gigs free. Would anybody be able to point me to the folder Hudson uses? Also I am…

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• Free server solution for strict content photos with geotags

  - by Max Gontar

  Hi! I would like to create some kind of open free "group" posting of photos with geotags First I thought about Panoramio, but seems there is no API for photos upload. By now I can see only two ways: Flickr - there are groups but you have to approve group membership anyway, or use tags for grouping which is bad for maintenance…

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• I need Free mediaWiki based personal hosting...

  - by metal-gear-solid

  I need Free mediaWiki based personal hosting...on internet. Free mediaWiki based personal hosting must be based on Mediawiki Content of My personal wiki should not come in any search (Google etc)

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• How to free static member variable in C++?

  - by user299831

  Can anybody explain how to free memory of a static member Variable? In my understanding it can only be freed if all the instances of the class are destroyed. I am a little bit helpless at this point... Some Code to explain it: class ball { private: static SDL_Surface *ball_image; }; //FIXME: how to free static Variable?…

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• Partial template specialization of free functions - best practices

  - by Poita_

  As most C++ programmers should know, partial template specialization of free functions is disallowed. For example, the following is illegal C++: template <class T, int N> T mul(const T& x) { return x * N; } template <class T> T mul<T, 0>(const T& x) { return T(0); } // error: function template partial…

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• glibc detected ./.a.out: free(): invalid pointer

  - by ExtremeBlue

  typedef struct _PERSON { size_t age; unsigned char* name; }PERSON; int init(PERSON** person) { (* person) = (PERSON *) malloc(sizeof(struct _PERSON)); (* person)->age = 1; (* person)->name = (unsigned char *) malloc(sizeof(4)); (* person)->name = "NAME"; return 0;…

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• What is your favourite Code Coverage tool(s) (Free and non-free)

  - by Scott Bennett-McLeish

  What is your favourite Code Coverage tool(s) (Free/non-free) and how do you use them effectively? There are several options available, such as: CodeCover Coverlipse Emma / EclEmma Atlassian Clover (commercial) Cobertura Crap4j I have CodeCover telling me various chunks of my code are 58% covered etc. But how does this help…

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• Free tools versus paid tools.

  - by Dennis Vroegop

  We live in a strange world. Information should be free. Tools should be free. Software should be free (and I mean free as in free beer, not as in free speech). Of course, since I make my living (and pay my mortgage) by writing software I tend to disagree. Or rather: I want to get paid for the things I do in the daytime. Next…

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• How can you lock start the screen-saver in OS X with a keyboard shortcut?

  - by FarmBoy

  I want to be able to lock the screen quickly, and and the hot-corner thing is slow and tricky. Any ideas?

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• asp.net free webcontrol to display crosstab or pivot reports with column and row grouping, subtotals

  - by dev-cu

  Hello, I want to develop some crosstab also know as pivot reports in Asp.net with x-axis and y-axis being dynamics, allowing grouping by row and column, for example: have products in y-axis and date in x-axis having in body number of sells of a given product in a given date, if date in x-axis are years, i want subtotals for…

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• Which free PHP based forum is the easiest to extend or customize? [closed]

  - by aditya menon

  Possible Duplicate: Which Content Management System (CMS) should I use? I am looking to start a new forum, with a traditional forum layout (like webhostingtalk, for example). In this space, I know phpBB and SMF are strong contenders. I do not know for sure the names of other great forum software that might exist... …

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• In Windows Vista Home Premium can an admin lock the machine so that no one one can "Switch User"?

  - by Bill Rodman

  Logged into an admin account, I am running a virus scan. When I lock the machine, it allows other users to "Switch User" and log in. Is there a way I can temporarily prevent other users from loggin in?

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• Qt LGPL licencing for a free application with closed source

  - by Andy M

  Hey everyone, I'm working on an application developped with Qt 4.6.2. I'm linking dynamicaly and I don't want to share my source code. The application is totally free and I don't plan on selling any part of it. I did not make any changes in the Qt library, I'm only using it to develop the application... I just want to…

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• Free (as in beer) Reverse Image Search API/Library/Service

  - by Bauer

  TinEye provides a great way to "reverse" search by image (i.e. upload/transload an image and have multiple possible sources of that image returned as results.) Since screen-scraping is messy and unreliable, I'm looking for a free API/library/web-service that could offer the same (or similar) reverse-image search…

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• Taming the malloc/free beast -- tips & tricks

  - by roufamatic

  I've been using C on some projects for a master's degree but have never built production software with it. (.NET & Javascript are my bread and butter.) Obviously, the need to free() memory that you malloc() is critical in C. This is fine, well and good if you can do both in one routine. But as programs…

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