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  • Android: Is decreasing size of .png files have some effect to resulted Bitmap in memory

    - by nahab
    I'm writing game with a large amount of .png pictures. All worked fine. Than I added new activity with WebView and got memory shortage. After that I made some experiment - replace game .png images with ones that just fully filled with some color. As result memory shortage had gone. But I suppose that Bitmap internally hold each pixel separately so such changes should have no effect. Maybe this because of initial images have alpha channel and my test images have not it? But actually question is: Will decreasing .png images files sizes make some effect on decreasing usage of VM application heap or not?

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  • Using memory mapping in C for reading binary

    - by user1320912
    I am trying to read data from a binary file and process it.It is a very large file so I thought I would use memory mapping. I am trying to use memory mapping so I can read the file byte by byte. I am getting a few compiler errors while doing this. I am doing this on a linux platform #include <unistd.h> #include <sys/types.h> #include <sys/mman.h> int fd; char *data; fd = open("data.bin", O_RDONLY); pagesize = 4000; data = mmap((caddr_t)0, pagesize, PROT_READ, MAP_SHARED, fd, pagesize); The errors i get are : caddr not initialized, R_RDONLY not initialized, mmap has too few arguments. Could someone help me out ?

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  • .NET allocations profiling

    - by nimoraca
    I need a way to track all allocations in a .NET application that happen during a single step in the process of debugging my application. I mean, when I'm in the debugger, stepping through code, I would like to see for a single step what allocation took place. Is there a tool or a way to do it? I tried several memory profilers including CLR profiler, JetBrains and .NET Memory Profiler 3.5 and none of them seems to provide this kind of funcionality.

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  • Parser Error Debugging VS2008

    - by maatthias
    When I create new VS2008 asp.net application it builds fine. But when I start debugging I get below error in browser. I've rebuilt the app. The Inherits clause of the markup page matches the class in the code-behind C#. Any clues? Server Error in '/' Application. Parser Error Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately. Parser Error Message: Could not load type 'WebApplication3._Default'. Source Error: Line 1: <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication3._Default" % Line 2: Line 3: Source File: /Default.aspx Line: 1 Version Information: Microsoft .NET Framework Version:2.0.50727.4952; ASP.NET Version:2.0.50727.4927

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  • Memory leak in chrome.extension.sendRequest()

    - by jprim
    Chrome Version : 9.0.597.19 (Build 68937) beta & current stable I have simplified my code as far as possible. I ended up with the attached extension: content.js (content script run on every site): setInterval(function() { chrome.extension.sendRequest({ }, function(response) { //Do nothing }); }, 1); background.js (background page script): chrome.extension.onRequest.addListener(function(request, sender, sendResponse) { sendResponse({ }); }); When you install this extension, you can observe it eating up memory extremely fast (I got 90MB in 1 min with 9 tabs opened). You can speed up the process by opening more tabs. Of course, the extension I am actually developing does not send requests every millisecond, but only every 3 seconds. This just slows it down, though. A user who has run it in the background for a long time with many tabs opened has reported 100MB of memory usage, and I can reproduce it to a less extreme extent, too.

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  • memcpy() safety on adjacent memory regions

    - by JaredC
    I recently asked a question on using volatile and was directed to read some very informative articles from Intel and others discussing memory barriers and their uses. After reading these articles I have become quite paranoid though. I have a 64-bit machine. Is it safe to memcpy into adjacent, non-overlapping regions of memory from multiple threads? For example, say I have a buffer: char buff[10]; Is it always safe for one thread to memcpy into the first 5 bytes while a second thread copies into the last 5 bytes? My gut reaction (and some simple tests) indicate that this is completely safe, but I have been unable to find documentation anywhere that can completely convince me.

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  • Mathematica & J/Link: Memory Constraints?

    - by D-Bug
    I am doing a computing-intensive benchmark using Mathematica and its J/Link Java interface. The benchmark grinds to a halt if a memory footprint of about 320 MB is reached, since this seems to be the limit and the garbage collector needs more and more time and will eventually fail. The Mathematica function ReinstallJava takes the argument command line. I tried to do ReinstallJava[CommandLine -> "java -Xmx2000m ..."] but Mathematica seems to ignore the -Xmx option completely. How can I set the -Xmx memory option for my java program? Where does the limit of 320 MB come from? Any help would be greatly appreciated.

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  • data parameter is nil error when checking internet connectivity

    - by JSA986
    When launching my app it checks if user is subscribed. If it dosent detect an internet connection it crashes with the error: Failed to retrieve subscription with error 'The Internet connection appears to be offline.' and responseString: (null)*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'data parameter is nil' .m [self getPath:path parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) { if (![responseObject isKindOfClass:[NSDictionary class]]) { failureBlock(@"Invalid response received"); return; } NSDictionary *subscriptionDict = (NSDictionary *)responseObject; if (subscriptionDict[@"error"] == nil) { DebugLog(@"Successfully retrieved subscription"); successBlock(subscriptionDict); } else { failureBlock(responseObject); } } failure:^(AFHTTPRequestOperation *operation, NSError *error) { DebugLog(@"Failed to retrieve subscription with error '%@' and responseString: %@", error.localizedDescription, operation.responseString); id responseObject = [NSJSONSerialization JSONObjectWithData:operation.responseData options:0 error:nil]; failureBlock(responseObject); }]; }

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  • zeroing out memory

    - by robUK
    Hello, gcc 4.4.4 c89 I am just wondering what most c programmers do when they want to zero out memory. For example I have a buffer of 1024 bytes. Sometimes I do this: char buffer[1024] = {0}; Which will zero all bytes. However, should I declare like this and use memset? char buffer[1024]; . . memset(buffer, 0, sizeof(buffer); Is there any real reason you have to zero the memory? What is the worst that can happen by not doing it? Many thanks for any suggestions,

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  • malloc unable to assign memory + doesnt warn

    - by sraddhaj
    char *str=NULL; strsave(s,str,n+1); printf("%s",str-n); when I gdb debug this code I find that the str value is 0x0 which is null and also that my code is not catching this failed memory allocation , it doesnt execute str==NULL perror code ...Any idea void strsave(char *s,char *str,int n) { str=(char *)malloc(sizeof(char)* n); if(str==NULL) perror("failed to allocate memory"); while(*s) { *str++=*s++; } *str='\0'; }

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  • In-memory data structure that supports boolean querying

    - by sanity
    I need to store data in memory where I map one or more key strings to an object, as follows: "green", "blue" -> object1 "red", "yellow" -> object2 I need to be able to efficiently receive a list of objects, where the strings match some boolean criteria, such as: ("red" OR "green") AND NOT "blue" I'm working in Java, so the ideal solution would be an off-the-shelf Java library. I am, however, willing to implement something from scratch if necessary. Anyone have any ideas? I'd rather avoid the overhead of an in-memory database if possible, I'm hoping for something comparable in speed to a HashMap (or at least the same order of magnitude).

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  • memory access violation error - 0xC0000005

    - by nobody
    I got memory access violation error sometimes.... but I don't know where the error comes from... So I reviewed the code and I found some strange code... delete m_p1; A *a = new A(); a->b = *c; m_p1 = a; --> strange code. I think it's a little strange line.... can i use the m_p1 after delete the m_p1? It can make some memory access error??

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  • About memory and delete object in c++

    - by barssala
    I will give some examples and explain. First, I declare some object like CString* param = new CString[100] And when I declare this one, my memory would increase a little bit because it's some implemented string. Then I store this object in some list of CString just like List<CString> myList = new List<CString>; // new list of CString myList.add(param); This is my question: I wanna know, when I delete myList, my param isn't deleted, right? And memory in param still exists. Do I misunderstand?

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  • memory leak in Zend_Db_Table_Row?

    - by Vincenzo
    This is the code I have: <?php $start = memory_get_usage(); $table = new Zend_Db_Table('user'); for ($i = 0; $i < 5; $i++) { $row = $table->createRow(); $row->name = 'Test ' . $i; $row->save(); unset($row); echo (memory_get_usage() - $start) . "\n"; } This is what I see: 90664 93384 96056 98728 101400 Isn't it a memory leak? When I have 500 objects to insert into DB in one script I'm getting memory overflow. Can anyone help?

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  • dynamic memory allocation [closed]

    - by gcc
    i wanna write a program that creates (allocating memory) and manipulates (adding elements and increasing memory etc.) integer arrays dynamically according to given input sequences. input sequence which starts with the maximum number of arrays, includes integers to be put into arrays and some one letter characters which are commands to carry out some tasks (activating next array, deleting an array etc). also, i wanna create *c_arrays which is the address of the array whose elements are the actual capacities (How many integer slots are already allocated for an array?) of arrays how should i organize(set up) the algorithm?

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  • removing image tag from memory

    - by Chapsterj
    I have seen some code to check if a background image on a div is loaded. What they are doing is adding a img tag to memory but storing it in a variable and using that to see if the image is loaded with the load event. My question is does the $img tag stay in memory and how would I be able to remove that tag when the load event has been called. var $div = $('div'), bg = $div.css('background-image'); if (bg) { var src = bg.replace(/(^url\()|(\)$|[\"\'])/g, ''), $img = $('<img>').attr('src', src).on('load', function() { // do something, maybe: $div.fadeIn(); }); } }); I got this code above from this post

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  • memory management question -- releasing an object which has to be returned

    - by ulag
    Hi, I have an NSMutableArray called playlist. This is in a method called getAllPlaylists. The code is something like this: -(NSMutableArray *)getAllPlaylists { //playlist is an instance variable playlist = [[NSMutableArray alloc] init]; //memory leak here . . //some code here which populates the playlist array [playlist addObject: object1]; . . return playlist; } The array allocation step of playlist is causing a memory leak. In such a scenario where can i release this array? Or can i avoid allocation n initialization of playlist here by doing something else?

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  • How to export SQL Server data from corrupted database (with disk write error)

    - by damitamit
    IT realised there was a disk write error on our production SQL Server 2005 and hence was causing the backups to fail. By the time they had realised this the nightly backup was old, so were not able to just restore the backup on another server. The database is still running and being used constantly. However DBCC CheckDB fails. Also the SQL Server backup task fails, Copy Database fails, Export Data Wizard fails. However it seems all the data can be read from the tables (i.e using bcp etc) Another observation I have made is that the Transaction Log is nearly double the size of the Database. (Does that mean all the changes arent being written to the MDF?) What would be the best plan of attack to get the database to a state where backups are working and the data is safe? Take the database offline and use the MDF/LDF to somehow create the database on another sql server? Export the data from the database using bcp. Create the database (use the Generate Scripts function on the corrupt db to create the schema on the new db) on another sql server and use bcp again to import the data. Some other option that is the right course of action in this situation? The IT manager says the data is safe as if the server fails, the data can be restored from the mdf/ldf. I'm not sure so insisted that we start exporting the data each night as a failsafe (using bcp for example). IT are also having issues on the hardware side of things as supposedly the disk error in on a virtualized disk and can't be rebuilt like a normal raid array (or something like that). Please excuse my use of incorrect terminology and incorrect assumptions on how Sql Server operates. I'm the application developer and have been called to help (as it seems IT know less about SQL Server than I do). Many Thanks, Amit Results of DBBC CheckDB: Msg 1823, Level 16, State 2, Line 1 A database snapshot cannot be created because it failed to start. Msg 7928, Level 16, State 1, Line 1 The database snapshot for online checks could not be created. Either the reason is given in a previous error or one of the underlying volumes does not support sparse files or alternate streams. Attempting to get exclusive access to run checks offline. Msg 5030, Level 16, State 12, Line 1 The database could not be exclusively locked to perform the operation. Msg 7926, Level 16, State 1, Line 1 Check statement aborted. The database could not be checked as a database snapshot could not be created and the database or table could not be locked. See Books Online for details of when this behavior is expected and what workarounds exist. Also see previous errors for more details. Msg 823, Level 24, State 3, Line 1 The operating system returned error 1(error not found) to SQL Server during a write at offset 0x00000674706000 in file 'G:\AX40_Dynamics_Live.mdf'. Additional messages in the SQL Server error log and system event log may provide more detail. This is a severe system-level error condition that threatens database integrity and must be corrected immediately. Complete a full database consistency check (DBCC CHECKDB). This error can be caused by many factors; for more information, see SQL Server Books Online.

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  • Sage 50 Accounts 2010 wont run on windows 7

    - by admintech
    I have sucessfuly installed Sage 50 Accounts 2010 onto my 32 bit Windows 7 machine, yet whenever i try to run it i encounter - Log Name: Application Source: Application Error Date: 24/05/2010 17:14:13 Event ID: 1000 Task Category: (100) Level: Error Keywords: Classic User: N/A Computer: LukeThomas-PC.domain.co.uk Description: Faulting application name: Sage.SBD.Platform.Installation.SoftwareUpdates.UI.exe, version: 2.0.0.91, time stamp: 0x4a8c22fe Faulting module name: igdumd32.dll, version: 8.15.10.1872, time stamp: 0x4a848a05 Exception code: 0xc0000409 Fault offset: 0x00012f96 Faulting process id: 0x1778 Faulting application start time: 0x01cafb5c2493b609 Faulting application path: C:\Program Files\Common Files\Sage SBD\Sage.SBD.Platform.Installation.SoftwareUpdates.UI.exe Faulting module path: C:\Windows\system32\igdumd32.dll Report Id: 63e2246b-674f-11df-96ba-002564c97988 Event Xml: 1000 2 100 0x80000000000000 5062 Application LukeThomas-PC.domain.co.uk Sage.SBD.Platform.Installation.SoftwareUpdates.UI.exe 2.0.0.91 4a8c22fe igdumd32.dll 8.15.10.1872 4a848a05 c0000409 00012f96 1778 01cafb5c2493b609 C:\Program Files\Common Files\Sage SBD\Sage.SBD.Platform.Installation.SoftwareUpdates.UI.exe C:\Windows\system32\igdumd32.dll 63e2246b-674f-11df-96ba-002564c97988 Any help would be appreciated as i cant find anything about this error

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  • 4GB of RAM in MacOSX 10.5, only 3GB in MacOSX 10.6

    - by Albert
    Hi, I was using MacOSX 10.5 on my MacBook until today and I had 4GB of memory there. Now I have updated to MacOSX 10.6 and it only displays 3GB. Why is that? How can I fix it? Also, I am a bit wondering why most people (well, most of the Google hits explained the 3GB issue that way -- leaving out the fact that it has worked earlier) are saying that a 32bit system can under no circumstances access more than 3.2GB. Don't we have PAE nowadays in most systems? Thanks, Albert

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