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by: chris |
last post by:
Hi all,
I need to know, what is the difference between dynamic memory
allocation, and stack allocation ?
1. If I have a class named DestinationAddress, when should I use
dynamic memory allocation to create object of that class ?
2. If it says "dynamic memory allocation", is it mean the
following code :
DestinationAddress* dest = new DestinationAddress(); // code 1
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by: PaulR |
last post by:
Hi,
We have a Server running SLES 8 and 3GB memory, with 1 DB2 instance and
2 active Databases.
General info...
DB2level = "DB2 v8.1.0.72", "s040914", "MI00086", and FixPak "7"
uname -a = Linux galahad 2.4.19-64GB-SMP #1 SMP
/etc/sysctl.conf
kernel.shmmax=268435456
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by: ballpointpenthief |
last post by:
If I have malloc()'ed a pointer and want to read from it as if it were
an array, I need to know that I won't be reading past the last index.
If this is a pointer to a pointer, a common technique seems to be
setting a NULL pointer to the end of the list, and here we know that
the allocated memory has been exhausted. All good.
When this is a pointer to another type, say int, I could have a
variable that records how much memory is being...
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by: ivan.leben |
last post by:
How can I really delete a preloaded image from memory/disk cache? Let's
say I preload an image by creating an Image object and setting its src
attribute to desired URL:
var img = new Image();
img.src = ;
Then I use the image a few more times by adding it into an Array
object:
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by: Johan Tibell |
last post by:
I've written a piece of code that uses sockets a lot (I know that
sockets aren't portable C, this is not a question about sockets per
se). Much of my code ended up looking like this:
if (function(socket, args) == -1) {
perror("function");
exit(EXIT_FAILURE);
}
I feel that the ifs destroy the readability of my code. Would it be
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by: Ken |
last post by:
In C programming, I want to know in what situations we should use
static memory allocation instead of dynamic memory allocation. My
understanding is that static memory allocation like using array is
faster than malloc, but dynamic memory allocation is more flexible.
Please comment... thanks.
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by: Peterwkc |
last post by:
Hello all expert, i have two program which make me desperate bu after i have noticed the forum, my future is become brightness back.
By the way, my problem is like this i the first program was compiled and run without any erros but the second program has a run time error when the function return from allocate and the ptr become NULL. How to fixed this?
Second Program:
/* Best Method to allocate memory for 2D Array because it's
...
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by: jacob navia |
last post by:
Suppose that you have a module that always allocates
memory without ever releasing it because the guy that
wrote it was lazy, as lazy as me.
Now, you want to reuse it in a loop. What do you do?
Contrary to some people that will start crying to that
&@@""#~ programmer that wrote this sh!!!! you keep
your cool and you do the following:
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by: vivek |
last post by:
i have some doubts on dynamic memory allocation and stacks and heaps
where is the dynamic memory allocation used?
in function calls there are some counters like "i" in the below
function. Is this stored in stack. If yes whether it will be deleted
on exiting from the function.
is dynamic memory allocation needed for this purpose
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by: karthikbalaguru |
last post by:
Hi,
Will 'free' return the memory Immediately to the OS ?
Thx in advans,
Karthik Balaguru
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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: 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: 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: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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