473,405 Members | 2,272 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,405 software developers and data experts.

Initialisation and cleanup

I have a class (classA) that requires initialisation ONCE. It also
provides static methods that depend on various variables etc to have
been correctly initialised.

Some sample code to explain the scenario:

class ClassA
{
public:
~ClassA();
static ClassB * fetchB();
static ClassC * fetchC();

private:
ClassA();
static int dummy ;
};
//Impl
namespace
{
int MyInitStuf(){ return 42 ;} //assume this allocs memory
void Cleanup(); //used to clean up previously allocd mem
};

static int ClassA::dummy = MyInitStuf();
I have two questions re the code above:

1). Is the dummy variable GUARANTEED to have been initialised already if
I call one of the static methods (or are the satic variables first
initialised when an INSTANCE is created ?

2). Supposing that the MyInitStuf() function allocates memory etc, how
can I enforce deallocation of the memory allocated during initialisation
? - i.e. at what point do I call Cleanup() ?
Sep 28 '07 #1
0 1115

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

6
by: use dmgass at hotmail dot com | last post by:
I'm writing a module and when it is imported by a script I want some code automatically executed when the importing script is finished executing. I'd like it to execute before interactive mode is...
2
by: Tim | last post by:
Please advise if you can. Presumably initialisation of members in member initialisation lists is perfomed by 'C' run-time startup. If the CRT was never started-up would those members be garbage?...
2
by: John Carson | last post by:
One routinely hears that the order of initialisation of objects with static storage duration in different translation units cannot in general be guaranteed. I have a question about one way to...
6
by: clilley | last post by:
The following code causes a segmentation fault on DEC Tru64: foo.cc (built into libFoo.so) //--------------------------- include <iostream> bool createFoo() { std::cout << "createFoo" <<...
3
by: sushant | last post by:
hi all, whats the difference between assignement and initialisation in C. is assignement related with scanf() and initialisation with (int x=10;) sushant
13
by: Frederick Gotham | last post by:
I have just been reading 8.5 in the Standard, and am trying to make sense of the different kinds of initialisations. Up until now, I thought of an object as either NOT being initialised (i.e....
1
by: Jason S | last post by:
I haven't used try/catch/finally very much in Javascript. My function (let's call it try_it()) needs to call a function that could throw an exception (let's call it dangerous()) with some setup()...
69
by: MQ | last post by:
Hi all I am just wondering how most people implement cleanup in C functions. In particular, if the function opens a number of resources, these need to be released properly should an error occur...
4
by: Kevin Frey | last post by:
I have an assembly written in C++/CLI that also links in non-clr Native C++ (the C++/CLI wraps the Native C++ functionality). This assembly has an in-built tracing system that needs to be...
0
by: Charles Arthur | last post by:
How do i turn on java script on a villaon, callus and itel keypad mobile phone
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
0
BarryA
by: BarryA | last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
1
by: nemocccc | last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
1
by: Sonnysonu | last post by:
This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...
0
marktang
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,...
0
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...
0
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...
0
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.