All Questions
Tagged with memory-management c++11
56 questions
0
votes
1
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565
views
Count the number of objects created statically and dynamically in C++
I have written below program to count the number of static and dynamically created object of the class.
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6
votes
1
answer
342
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Safe new/delete
A student was having problems with memory management so I put together an overload of global operator new and global ...
8
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2
answers
1k
views
Polymorphic deleter for unique_ptr
There is a basic difference in the way C++ manages the deleter for std::unique_ptr and std::shared_ptr, mainly for allowing ...
- 263
1
vote
1
answer
132
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Boolean class using shared referenced memory
To improve my knowledge I am trying to make a bool class from scratch, or derivative of. I am using MinGW g++11 compiler on a Windows 7 laptop.
...
- 195
5
votes
1
answer
1k
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C++ shared_ptr memory pool
I put together this little memory pool class to help avoid the costs associated with heap allocation and deallocation of objects that are frequently created & destroyed. It creates C++ standard <...
- 425
2
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0
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324
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Yet Another Non-Intrusive Reference Counted Smart Pointer Implementation
I needed a reference counted smart pointer for my project, and for some reason early in my project, I decided that I did not like the std::shared_ptr. I can't ...
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28
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5
answers
5k
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C++ Vector Clone
I'm learning C++, so I decided to make a simpler clone of std::vector.
Concerns:
I have seen people defining methods outside of the class, and only prototyping ...
- 741
9
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2
answers
6k
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Fast pool allocator for games in C++
I have implemented the following pool allocator in C++:
...
- 311
3
votes
0
answers
320
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C++ object pool using C memory pool as base
I started out with this question on Stack Overflow. I have since then gotten an official answer from the mbed developers that the MemoryPool that I was asking about only issued raw C malloc/free type ...
- 31
2
votes
1
answer
517
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C++ Policy-based object pool
Description
This is an improved implementation for a previous post
My goal was to implement a decent object pool using templates and policy based design. The object pool behaviour can be customized ...
- 345
13
votes
1
answer
3k
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C++ class for aligning objects on the stack
I wrote a short class which allocates objects on the stack and aligns them to a specific memory address. Alignment makes sense for some objects (i.e. some SIMD intrinsics require aligned data). I ...
- 233
6
votes
2
answers
16k
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C++ Trie using std::map and std::unique_ptr
I'm learning C++ and whilst trying to write in modern C++, I've made an attempt to rewrite a trie implementation written in C found here: http://www.geeksforgeeks.org/trie-insert-and-search/
It uses ...
- 63
2
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2
answers
992
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A simple C++ Trie for working with strings
Here is a simple C++ 11 trie for insertion and membership testing:
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2
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1
answer
9k
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Vector with move constructor and move assignment operator [closed]
Please verify whether the code for a move constructor and a move assignment operator is correct.
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- 107
13
votes
2
answers
922
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Dynamic memory management for a class hierarchy of geometric shapes
The task was to write function that compare areas of two random generated geometric shapes (circle, square, rectangle) using base class with virtual function.
Am I doing it right in terms of memory ...
- 261
7
votes
2
answers
9k
views
Simple C++ object pool
I am studying computer science and just for the sake of practise I thought of implementing an object pool.
This is my first implementation, it is simple and works correctly, but I would love any ...
- 345
3
votes
1
answer
206
views
Writing order and move assignment when following the Rule of Five
I am a C++ newbie, and trying to figure out what the best practices are for writing the "Big Five" member functions, as prescribed by C++11's unofficial "Rule of Five".
My class with a raw pointer is:...
- 131
-1
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1
answer
4k
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Using shared_ptr as class member [closed]
I have already got the answer for my previous question, and I decided to use std::vector<int> instead of int *. I have ...
2
votes
1
answer
190
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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- 1,594
5
votes
2
answers
237
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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 ...
- 165
2
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1
answer
242
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 ...
- 237
5
votes
1
answer
617
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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- 1,499
4
votes
2
answers
2k
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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 ...
- 43
5
votes
2
answers
197
views
Does my Linklist implementation have memory leaks?
Are there any memory leaks in this linklist implementation.Also is the implementation correct?Can the time complexity be optimized?
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- 127
12
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3
answers
3k
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Stack implementation with move semantics
I have implemented a basic stack just for fun. I've just started learning about move constructors and assignment and move semantics as a whole, so I would really appreciate some feedback as to whether ...
- 551
2
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0
answers
432
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Implementation of a lock-free fixed-sized allocator - follow-up - with commented code
The following implementation of a lock-free fixed-size allocator is a follow-up of:
Implementation of a lock-free fixed-sized allocator
§1 - Introduction
The purpose is self-learning of atomic ...
- 565
12
votes
2
answers
2k
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Implementation of a lock-free fixed-sized allocator
This question now has a follow-up:
Implementation of a lock-free fixed-sized allocator - follow-up - with commented code
I've tried implementing a lock-free fixed-size allocator while trying to ...
- 565
2
votes
0
answers
88
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Platform independent leak/cyclic dependency detection of objects
Sometime back I came across a bug where a particular object was leaking but it was very hard to identify the root cause. I knew that it was due to a cyclic dependency (which usually indicates a bug in ...
- 121
4
votes
2
answers
122
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MallocRaii implementation
I'm playing around with RAII a bit lately and I wan't to know if/how I can improve this (quite simple but very helpful) class.
A word to two decisions I've made and why:
No error handling in ...
- 613
6
votes
1
answer
259
views
Pool allocator for a scripting language parser
At the moment I'm writing a parser and interpreter for a custom scripting language, to learn more about the basic concepts involved and to get more familiar with tools like ...
- 17.2k
6
votes
1
answer
2k
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Applying the copy-swap idiom to humans and employees
I came across this post which explains the copy and swap idiom. However I could not find this idiom applied to classes that have base classes. Following is my attempt of a copy-swap idiom applied to ...
- 171
10
votes
2
answers
3k
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C++ custom memory allocator
I'm working on a C++ custom memory allocator, that would be kind of a replacement for the C flexible array syntax, you know, the stuff like that:
...
- 611
6
votes
1
answer
28k
views
Reading from a CSV file in C++
I wrote this code to read from a CSV text file (containing data such as 12,3,568,48,3,8 with no more than 3 digits to each number). It stores the numbers as char arrays in the vector ...
- 163
8
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1
answer
1k
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Rotating and printing an image
I carefully used smart pointer to avoid memory leaks and dangling pointers, but someone says my code has memory leaks. Is it true? If so, how can I fix it?
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- 3,290
5
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2
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1k
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Rotate an image (2D array) by 90 degrees recursively with low memory usage
I'm looking for comments on coding style, passing arguments, ...etc.
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- 149
1
vote
2
answers
25k
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std::vector of pointers with the rule of three
I have a class that has a std::vector of pointers, I'm NOT going to give any of those pointers to objects outside of it, I mean, I'm not going to share the pointers....
- 185
11
votes
1
answer
382
views
Wrapping types with alignment requirements
Visual Studio 2013 still doesn't support the alignas keyword in C++11. This causes some problems with alignment of types in various situations. Thankfully the ...
- 16.6k
3
votes
1
answer
2k
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Program that handles program options
I'm using boost::program_options to parse input from the user. However, while the standard library makes this an easy task to do, it's causing an (in my opinion) ...
- 31
5
votes
2
answers
675
views
Singleton typed memory manager
For my resources management, I wanted the objects allocated on the heap to be in a contiguous block of memory. Obviously, each data type then has to have their own chunk of memory. I could have used a ...
- 200
3
votes
1
answer
1k
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Auto-recycling C++11 polymorphic smart pointers
I've recently read an interesting blog post by Philipp Zschoche:
it explains how it's possible to avoid unnecessary allocations/deallocations by keeping track of previously allocated memory in a stack....
- 775
8
votes
1
answer
301
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Associative container that produces a unique, instance specific handle for each inserted object
It is not always possible to simplify program design by strictly managing the lifetimes of objects. If two objects have unpredictable lifetimes, but one of them needs to refer to the other, a simple ...
- 495
5
votes
2
answers
802
views
Handle-based entity manager (that stores entities contiguously)
I've created a generic data structure intended for game development entity management. It has some interesting properties:
Entities are stored contiguously in an ...
- 775
31
votes
1
answer
3k
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Yet another 'any' class implementation, named 'some'
This is a follow-up of 'any' class implementation. After posting my answer, I kept working on the code towards parameterizing with respect to memory management as I had promised. I ended up in some ...
- 2,294
8
votes
1
answer
2k
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Smart pointer memory pool
I'm using a third-party library which utilizes boost::shared_ptr for memory management.
The problem is that I need to allocate many objects and I have detected ...
- 233
8
votes
1
answer
1k
views
D3D9 leaks if any?
I am writing a D3D9 hook plugin to give back to a community that helped me learn programming. It is a community based on programming and scripting for games.
The plugin is supposed to hook d3d9.dll ...
- 183
6
votes
1
answer
5k
views
WinAPI code for DNS queries
This is just some test code I'm doing to learn C++11. It compiles and runs consistently. But is anything wrong that will eventually (or under slightly different circumstances) fail?
Besides ...
- 163
4
votes
1
answer
2k
views
Implementing `create` and `destroy` functions to replace `new` and `delete` operators
The environment I'm working in requires that all allocation is done through a special set of malloc/calloc functions and that a ...
- 141
4
votes
1
answer
5k
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Memory Pool and Block Alignment
I have written a memory pool (pool_allocator) that was described in a book I am reading (Game Engine Architecture). The interface is pretty basic:
The constructor:...
- 178
11
votes
1
answer
13k
views
A working stack allocator
Here's an absolutely essential piece of C++ lore, a stack allocator, that will allow you to, say, allocate strings and vectors on the stack. There are 2 stack allocators I know of, here and here.
The ...
- 1,434
2
votes
1
answer
3k
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Heap memory preallocation (intended for games)
Currently, in my games, I'm using new and delete to create entities and components. It works fine, but there are slowdowns when ...
- 775