• Announcements

    • khawk

      Download the Game Design and Indie Game Marketing Freebook   07/19/17

      GameDev.net and CRC Press have teamed up to bring a free ebook of content curated from top titles published by CRC Press. The freebook, Practices of Game Design & Indie Game Marketing, includes chapters from The Art of Game Design: A Book of Lenses, A Practical Guide to Indie Game Marketing, and An Architectural Approach to Level Design. The GameDev.net FreeBook is relevant to game designers, developers, and those interested in learning more about the challenges in game development. We know game development can be a tough discipline and business, so we picked several chapters from CRC Press titles that we thought would be of interest to you, the GameDev.net audience, in your journey to design, develop, and market your next game. The free ebook is available through CRC Press by clicking here. The Curated Books The Art of Game Design: A Book of Lenses, Second Edition, by Jesse Schell Presents 100+ sets of questions, or different lenses, for viewing a game’s design, encompassing diverse fields such as psychology, architecture, music, film, software engineering, theme park design, mathematics, anthropology, and more. Written by one of the world's top game designers, this book describes the deepest and most fundamental principles of game design, demonstrating how tactics used in board, card, and athletic games also work in video games. It provides practical instruction on creating world-class games that will be played again and again. View it here. A Practical Guide to Indie Game Marketing, by Joel Dreskin Marketing is an essential but too frequently overlooked or minimized component of the release plan for indie games. A Practical Guide to Indie Game Marketing provides you with the tools needed to build visibility and sell your indie games. With special focus on those developers with small budgets and limited staff and resources, this book is packed with tangible recommendations and techniques that you can put to use immediately. As a seasoned professional of the indie game arena, author Joel Dreskin gives you insight into practical, real-world experiences of marketing numerous successful games and also provides stories of the failures. View it here. An Architectural Approach to Level Design This is one of the first books to integrate architectural and spatial design theory with the field of level design. The book presents architectural techniques and theories for level designers to use in their own work. It connects architecture and level design in different ways that address the practical elements of how designers construct space and the experiential elements of how and why humans interact with this space. Throughout the text, readers learn skills for spatial layout, evoking emotion through gamespaces, and creating better levels through architectural theory. View it here. Learn more and download the ebook by clicking here. Did you know? GameDev.net and CRC Press also recently teamed up to bring GDNet+ Members up to a 20% discount on all CRC Press books. Learn more about this and other benefits here.
Sign in to follow this  
Followers 0

Passing vector to a new thread

3 posts in this topic

Hi Guys,

I am trying to work out how I can access a vector of structs from a new thread.

The creation is of the vector is done like so;

[code]void CoreNetwork::registerData(int nStructureType,void *pStructure,int nStructureSize)

But, I cant figure out how to iterate this data from another thread made with CreateThread().

Any help would be awesome. :cool:

Share this post

Link to post
Share on other sites
If you are referring to the [url="http://msdn.microsoft.com/en-us/library/ms682453%28v=vs.85%29.aspx"]Win32 API CreateThread() function[/url], then you can use the fourth parameter [b]lpParameter[/b] to pass in arbitrary data into the thread as a pointer to void. This is a far more preferrable way than using global variables to pass data to a new thread.

Since you can only pass in a pointer to a single object, you have to group the data to a single struct if you need to pass in multiple variables. What you can do is create something like
struct ThreadCreationParameters
std::vector<int> myIntArray;
int someOtherData;
std::string someMoreData;

void StartThread()
ThreadCreationParameters *params = new ThreadCreationParameters;
// Populate contents of params here.
CreateThread(..., params, ...);

ThreadCreationParameters *params = reinterpret_cast<ThreadCreationParameters *>(param);
// Now can access parameters with params->xxx

// Remember to delete params after we are done.
delete params;

Note that it is important that you dynamically allocate the ThreadCreationParameters structure instead of placing it into the stack, since after exiting StartThread(), the stack would be cleared, and MyThreadMain would be accessing freed memory.

Also, remember that any variables you pass in ThreadCreationParameters by pointer or by reference need to be appropriately guarded with a synchronization primitive if both threads will be accessing the data.

Share this post

Link to post
Share on other sites
Awesome, I have been playing with your example and I get what is happening here :cool:

I'll apply it to my app and see how I go.

Thanks again for your help ;)

I have just translated this to suit my app and it looks like it is exactly what I need. Thanks again, bro! :cool:

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  
Followers 0