Memory management is the act of managing computer memory by allocating portions of memory to programs as well as freeing memory so that it can be re-used.
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31 views
Memory allocation tracking using anonymous lambda wrapper
I had this idea to exploit anonymous lambdas that are immediately executed that wrap around an allocation function to track those allocations in a statically created Stats object.
This is the code I ...
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1answer
58 views
Ensure that ICommand implementation properly uses weak references
I am building an implementation of System.Windows.Input.ICommand that is like the commonly used RelayCommand, but doesn't keep a ...
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0answers
21 views
Helper class for accessing blobs and mmap memory - follow up
This class was inspired from Microsoft's array_view.
It intended to use with mmap-ed memory for easily check bounds and so on.
I probably will need to throw exceptions, but this is not my usual way ...
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1answer
40 views
Helper class for accessing blobs and mmap memory
This class was inspired from Microsoft's array_view.
It intended to use with mmap-ed memory for easily check bounds and so on.
...
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2answers
63 views
Code for calculating number of trailing zeroes after factorial
While trying my hands at the beginner codechef problem I came across this . So basically doing that problem with Dynamic programming is an overkill but why not try that and get some DP practice.
Nice,...
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0answers
40 views
ObservingCache - scheduled task executor that returns a result
I wrote a utility class called ObservingCache, which receives a task in the form of Supplier<T> and an interval, computes the task every [interval] millis and ...
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2answers
65 views
A dynamic memory resource with alignment support
Although C11 introduced aligned_alloc( alignment, size ), there is no support for aligned reallocation (AFAIK). The ...
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2answers
70 views
Simple program to read memory usage by PID in Linux
I just learn a little bit about C Programming and try to create a modular program so I created simple program to read memory usage by pid(s) in Linux.
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1answer
99 views
Brute-force password cracker
I am trying to write a program to find a zip file's password. I know the password consists of only lower-case letters and it's length does not exceed 6 characters. I wanted to check the passwords of ...
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votes
1answer
32 views
Split a file into individually allocated lines
This is part of a larger project that is to run on POSIX systems. My concerns with it are the lack of comments, best practices with the filesystem, and naming things. Of course all feedback is great.
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3
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0answers
26 views
Round-tripping from LinkedHashMaps to Clojure collections
I'm trying to implement round-tripping from LinkedHashMaps to Clojure collections. The implementation below works for smaller collections, but larger collections raise ...
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3answers
200 views
Structure to ByteArray Extension
I have a need to turn various structures into byte arrays to be sent over serial port to another machine. I created generic extensions to turn any structure into a byte array and from a byte array ...
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2answers
2k views
Taking arbitrary length input in C
Instead of having to use something like char buf[100500] and hope that no possible user input could be longer than 100500 bytes, I decided to make the following ...
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votes
0answers
42 views
cross-platform stdlib-only aligned allocator in C++14
I'm writing a program which uses OpenCL, and the OpenCL types are mostly over-aligned. Sometimes when using stl containers with these types, I'd get segfaults, so I tried to write my own aligned ...
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votes
2answers
79 views
NamedPoint class using unique_ptr for members
After reading this old article from 2001 I have tried to implement the class from it using unique_pointer.
An author's claim is that C++ is not appropriate for ...
4
votes
1answer
131 views
New malloc implementation
I've written a new malloc implementation similar to dlmalloc and was hoping for feedback on it.
The goals for this library are:
...
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votes
1answer
60 views
Serial communuication application of 24*7 having memory issue
I am having a serial port communication application using 3 serial ports DMX (m_port,m_port1,m_port2) which will run 24 *7 , so i just need to ensure memory usage doesn't go above limit with using(), ...
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5answers
315 views
Custom list to avoid out of memory exceptions
The following class is a helper to avoid OutOfMemoryException exceptions being thrown when the list is to large so that it is added onto the large objects heap. To ...
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0answers
148 views
Aligning your heterogenous uninitialized memory to make the processor happy
After learning more about memory alignment and how it can impact processor data access, I tried to find something in the standard that offers proper memory alignment inside blocks of raw memory that ...
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0answers
69 views
Low performance of HTTP request using Haskell wreq
The program makes HTTP requests (checks video stream status) and calls an external program.
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2answers
132 views
C++ object pool
I am a beginner and would like to build a pool. I made some research and found out that if my software has heavy object create and delete part, I should use a pool because of performance. I made some ...
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1answer
89 views
Pointer lists for a C++ garbage collector
The problem
My intention is to have a class A and class B. class B has a ...
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1answer
70 views
Longest lines using priority queue
Inspired by a comment on this question, I thought I'd exercise my C skills by implementing something like it using a priority queue.
The idea is to be able to invoke the program like this:
./...
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votes
1answer
63 views
Allocating a contiguous block of memory for an array
I try to work with a contiguous block of memory, to create an array (2D) whose SIZE is not known at compile time (before c99) so no variable-length arrays are involved here.
I came up with the ...
3
votes
1answer
57 views
Testing different implementations of malloc()
Can you help me verify my test result? I'm testing different malloc() implementations with a small program that allocates gigabytes many times:
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3
votes
2answers
100 views
calloc, malloc, free and realloc wrappers to store the size being allocated
I'm currently building a node.js addon for libcurl. Right now I'm trying to correctly use v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory to ...
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0answers
67 views
Fast ReadProcessMemory, save guest names that is in memory in hum text file
My code is very slow. How do I get it fast? I would also like to put a scanner on if you have a name in memory to save it in a text file.
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2answers
162 views
RAM overhead on a compression program [closed]
In a program, the one below is attempting to codify into a translation of another file. The output is severely condensed. It works, and once I get it to decompress, then it will win award after award. ...
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votes
3answers
228 views
Simple Pool Allocator
This is a simple pool allocator, based (to at least some degree) on a previous answer. The basic idea is pretty simple: allow a user to allocate objects of some type quickly (in relatively large ...
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votes
1answer
70 views
Lazy String splitter in C++
I created a string splitter in C++. It splits a string in a lazy fashion and makes use of forward iterators to sequentially supply the next token from the string until it runs out of tokens.
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votes
2answers
77 views
Comparing vehicle crash data the previous year
I have created an automated macro which takes vehicle crash data from a .csv file and automatically creates a pivot table and charts and compares it to the previous year. The code is approximately ...
10
votes
1answer
78 views
Block allocator
I wrote this block allocator for exercise and would love to get your reviews.
Main features I wanted to have:
Detecting buffer overflows with canary terminator.
Being able to allocate arbitrary ...
2
votes
0answers
45 views
Fetching a weather report on an Arduino from a web service
I'm writing some code which is basically supposed to http get some information from my own website and parse it, which (finally) works. However, when I compile the code, it shows this:
Sketch uses ...
6
votes
3answers
125 views
View programming pattern in C++ without raw pointers
I'm trying to achieve, for lack of a better term, a "view" pattern in C++. It's probably most comparable to "views" in the Database world, where one can make a query, and then perhaps aggregate the ...
3
votes
0answers
20 views
Using STORAGE macro using QSAM for input/output
I was wondering if you can help me out. I wanted to know if there is an easier way to do the following. My code works but I feel like there is a lot things going out with multiple loops and wanted to ...
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0answers
41 views
Producer/Consumer write to file
I'm concerned with the memory usage of this application. When I start it and look at it's memory usage while it's waiting for input, it's memory usage is around 13,212 K.
When the application runs ...
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votes
2answers
202 views
Memory Management Code
For a project I had to do a memory management problem without creating any custom classes or templates using the provided pool array and ...
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2answers
104 views
Delphi 2009 interface
I have this code and at the end of it, FastMM shows that there were memory leaks with all the objects of TSinc:
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2answers
811 views
Binary file validity in C++/C++11: checking a binary header
I have some code for checking a binary header to see if a binary file is meant to be read by a certain program, and I could use some extra eyes to review it.
Assume the following ...
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1answer
102 views
3
votes
2answers
123 views
Hello World using Python embedded in C++, with RAII library initialization
I have written a small Hello World application that uses Python's C-API. The C library requires some functions to be called for global library (de-)initialization and the objects created by the ...
7
votes
3answers
3k views
Replace space with %20
This is not very memory-efficient. Can you please suggest a better way or improvement?
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3
votes
1answer
72 views
Reducing memory footprint when manipulating big csv file
I have CSV file which has structure like this (separated by tabulators):
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3
votes
1answer
51 views
Computing the double Integral using MonteCarlo techniques using Julia
I decided to try and learn Julia for doing scientific computing, and I decided to tackle the problem of finding
$$ \int_{D_{\frac{1}{4}}} x^4 + y^2 dA $$
where \$ D_{\frac{1}{4}} \$ is the part of ...
3
votes
2answers
71 views
BMP file writer
In my current project I'm writing a C function to write a BMP-File. Internally, the function is split up into three parts: write header, write info header, write data.
In some of these functions I do ...
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votes
1answer
41 views
YAGOP - Yet Another Generic Object Pool
While thinking about this question it struck me that one problem of linked data structures always seems to be loss of memory locality and performance could possibly be improved if all allocated nodes ...
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0answers
41 views
Purging elements from the map if it reaches a memory size limit
I have implemented a LRU cache using ConcurrentLinkedHashMap. In the same map, I am purging events if my map reaches a particular limit as shown below.
I have a ...
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vote
0answers
65 views
C++ base class for heap awareness
I have a few classes that form a class hierarchy where some objects point to others. In the usual case, I create these object on the stack. In other cases, I need to clone these object to do some ...
3
votes
1answer
48 views
Singly linked list in pure C - follow-up
This is an update for this post.
I fixed all style-issues from the comments, but still have a few questions left:
Someone commented that my last post contained too many functions, which could be ...
2
votes
3answers
79 views
Singly Linked List in pure C
I recently learned about linked lists and here is my first try to write one in C. I know it's a lot of code, but I hope someone takes a look. Any tips memory allocation and improvements are welcome.
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