dynamic-memory-allocation

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What would realloc do if there is no sequential space of memory?

realloc is used to reallocate the memory dynamically.开发者_如何转开发 Suppose I have allocated 7 bytes using the malloc function and now I want to extend it to 30 bytes.[详细]

2023-01-15 20:46 分类：问答
Is it slow to do a lot of mallocs and frees on iPhone?

I have an array of point data (for particles) which constantly changes size.To adapt for the changing size, I 开发者_运维百科use code like the following to create correctly sized buffers at about 60 h[详细]

2023-01-15 20:29 分类：问答
Where is dynamic memory allocated?

The question was asked to me in an interview and my answer was \"computer memory\". But wh开发者_如何学Pythonere exactly..? is it the Random Access Memory or the hard drive?They were probably looking[详细]

2023-01-11 22:17 分类：问答
Allocating memory inside loop vs outside loop

Is there noticeable performance penalty for allocating LARGE chunks of heap memory in every iteration of loop? Of course I free it at the end of each iteration.[详细]

2023-01-10 12:55 分类：问答
Reading all content from a text file - C

I am trying to read all content from a text file. Here is the code which I wrote. #include <stdio.h>[详细]

2023-01-09 22:59 分类：问答
How are malloc and free implemented?

I want to implement my own dynamic memory management system in order to add new features that help to manage memory in C++.[详细]

2023-01-09 13:07 分类：问答
Runtime allocation of multidimensional array

So far I thought that the following syntax was invalid, int B[ydim][xdim]; But today I tried and it worked! I ran it many times to make sure it did not work by chance, even valgrind didn\'t report[详细]

2023-01-09 11:36 分类：问答
SomeClass* initialEl = new SomeClass[5];

Should SomeClass* initialEl = new SomeClass[5]; necessarily compile, assuming SomeClass does not have a non-publicly declared default constructor?Consider:[详细]

2023-01-07 03:19 分类：问答
dynamic memory allocation teaching materials?

Besides the (somewhat dated) papers that appear in Wikipedia\'s ref section, are there good (teaching) materials that you kno开发者_开发问答w of that comprehensively discuss dynamic memory allocation[详细]

2023-01-06 09:35 分类：问答
Getting the lowest free virtual memory address in windows

Title says it pretty much all : is there a way to get the lowest free virtual memory address under windows ? I should add that I am interested by this informat开发者_开发技巧ion at the beginning of th[详细]

2023-01-06 00:41 分类：问答