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by: Scott Brady Drummonds |
last post by:
Hi, everyone,
A coworker and I have been pondering a memory allocation problem that we're
having with a very large process. Our joint research has led us to the
conclusion that we may have to replace the STL allocator. But, before I
even attempt something like this, I wanted to ask some questions to this
group:
1) We read online that STL caches allocated memory so that containers and
their contents that are freed at one point in...
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by: Bernhard Kick |
last post by:
Hi all,
I saw this code in the book "Accelerated C++" (chapt 11, iirc):
template <class T> class Vec {
...
std::allocator<T> alloc; // object to handle memory allocation
// ??would static member work here??:
// static std::allocator<T> alloc;
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by: John Harrison |
last post by:
If you specify an allocator in an STL container is it a requirement that
the allocator allocates object of the right type, or can you assume that
the container will rebind the allocator to the correct type?
For example I tried the following code which uses a 'wrong' allocator and
was slightly surrised to find it compiles on the three compilers I tried
it on
#include <vector>
#include <memory>
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by: Grahamo |
last post by:
Hi,
can anybody tell me where I can get the boiler plate code for
std::allocator. I need to have my version of new and delete called and
want to get reference code. My compilers headers are all over the place
with #ifdefs and what not, I'd like a clean copy.
thanks much
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by: Protoman |
last post by:
Why won't the compiler let me write:
#include <iostream>
#include <cstdlib>
#include <new>
using namespace std;
template <class T>
class Allocator
{
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by: mavrik |
last post by:
Hi,
I've written allocator for STL vectors, which take all memory from my heap.
But I don't have any idea to implement the same for Maps.
As maps take Key and Values. So should I use the same allocator for both data types, or the allocator for map should ahve different signature???
-Thanks
-Mavrik
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by: Juha Nieminen |
last post by:
I tested the speed of a simple program like this:
//------------------------------------------------------------
#include <list>
#include <boost/pool/pool_alloc.hpp>
int main()
{
typedef std::list<intList_t; // default allocator
//typedef std::list<int, boost::pool_allocator<int List_t;
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by: * Tong * |
last post by:
Hi,
I'm following the example in "C++ Templates: The Complete Guide",
section 5.4 Template Template Parameters.
It's basics/stack8.hpp example has a statement of "#include <allocator>",
but I got an error for it.
$ cat -n allocator.cc
1 #include <allocator>
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by: PeterAPIIT |
last post by:
Hello all C++ expert programmer,
i have wrote partial general allocator for my container.
After reading standard C++ library and code guru article, i have
several questions.
1. Why allocator write forward declaration then allocation for void*
rather than directly wrote allocator first ?
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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