Memory allocation is an operation of giving a program a block of memory.
Questions tagged [allocation]
1869 questions
0
votes
2 answers
How to Dynamically Allocate a string within a struct with fscanf or fgets?
I'm trying to allocate a string within a struct with fscanf,
I tried this:
#include
#include
#include
#include
#include
typedef struct _SPerson {
char *name;
char *surname;
char *id;
…
user3289840
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Allocating Physically Contiguous Pages from User Space in Linux
I need to allocate physically contiguous pages from user space and get back the physical address. How can I do so? I need it physically contiguous because I'm working in-conjunction with hardware that needs that.
get_free_pages as I understood is…
Hanna Khalil
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0
votes
1 answer
Allocation fault (function or code) and strange behavior in C
I stumbled upon this problem while trying to make a programm that solves linear systems of equasions using Gaussian elimination. I am sorry for this long part of the code but i really need help and i think that this way you can see if i made some…
refa
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0
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2 answers
Does appending/removing entries to a Java list reallocate memory?
This is low-level memory question about how Java performs .add and .remove on an ArrayList or other types of lists. I would think that Java would have to do a reallocation of memory to append/remove items to a list, but it could be doing something…
mjswartz
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0
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2 answers
Trying to free allocated memory borrowed when initializing an object, but getting Xcode warning
OK, so I have my main.m program code, and mvds suggested I free the allocated memory I borrowed from my class when I created a new instance.
For some reason, when I attempt to free the memory using
[converter free];
It gives me a warning saying…
Qcom
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0
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0 answers
Getline() and cin manipulate dynamic array
I'm totally lost and confused and could use some help.
I'm currently working on a small command line-based game. For this I wrote a class Inventory, dynamically creating an array of invSpace-objects, each space representing a pair of a pointer to an…
Benniczek
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0
votes
1 answer
dynamic array is allocated without malloc
How did the array get created, even if malloc is not used?
#include
#include
int main() {
int n,i,*ptr,sum=0;
printf("Enter number of elements: ");
scanf("%d",&n);
printf("Enter elements of array: ");
…
hello hello
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0
votes
1 answer
Arbitrary-strings using getline
So basically what my program did before i had to change it so that it would accept arbitrary values, was to take x-amount of words and the size of the words would also be arbitrary. (both are user inputted). I did this via a multiArray.
Then sorted…
Joel
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1 answer
How to pre-allocate and assign a value to a variable whose name is written in a cell array?
% Data
Fields = {'History','Maths','English','French','Geography','Philosophy'}';
Students=…
Alban
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- 4
0
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2 answers
Declare global contiguous 2d array at runtime. The dimensions are unknown at compile time C
I want to declare a global 2d array in C, and allocate contiguous memory at runtime because the minor dimension is unknown at compile time.
I would like to dereference the array with 2-indices notation A[i][j].
If the array wasn't global c99…
NickSar68
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0
votes
1 answer
How does c++ stl map manage memory, and how to get around it
I am using an stl map, linking an int key to objects of a class I defined, Account. The program involves alot of multithreading. Some of the threads send account objects by reference to functions that make changes in these objects. My question is…
Avivos
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0
votes
1 answer
What happens to memory behind the scenes when creating new objects inside of C# for loops?
I'm trying to understand when memory gets allocated and when the garbage collector collects garbage. Let's say that I have some code like this:
foreach (FileInfo f in File){
foreach (DataAtrribute d in f){
string name = d.name;
…
HandleThatError
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0
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2 answers
Allocated bytes in Java applications
Is there a way of finding how many bytes were allocated in a Java application? If possible, without changing the code?
Thanks.
franco
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0
votes
2 answers
Specifying Resource Allocation algorithm?
Can someone help me to solve or specify what type of problem is this:
I have a set of resources and a number of users, and for each user there is a specific subset of resources that can choose a single resource from for allocation. Two different…
Maryam H
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0
votes
1 answer
An issue allocating data in c
I've got this homework, which is to make an implementation of the "tail" command in Linux and this is what i have so far:
#include
#include
#include
#include
#include
#include…
IneptusMechanicus
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