Jump to content
  • Advertisement
Sign in to follow this  
Z01

Explicitly calling a constructor

This topic is 4842 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

How can I explicitly call the constructor for a class?
template <class T>
class Allocator3D
{
....
	// Returns NULL on failure
	T *Alloc() 
	{  
		if (!FreeList)
			if (!CreateNewChunk(SizeIncrement))
				return NULL;

		T *ret = FreeList;
		FreeList = Next(FreeList);
		ret->T::T();  // compiler gives error about class not having a T() function

		return ret;
	}
....
};


Share this post


Link to post
Share on other sites
Advertisement
Quote:
Original post by MrEvil
You should be using placement new, which will not actually allocate the object, just construct one at the address you give.


Ohhhh, I didn't know you could do that...[smile]

Share this post


Link to post
Share on other sites
That sounds what I was looking for, thanks a bunch. Btw, the memory is allocated on the heap for a pooled memory manager.

Share this post


Link to post
Share on other sites
Sign in to follow this  

  • Advertisement
×

Important Information

By using GameDev.net, you agree to our community Guidelines, Terms of Use, and Privacy Policy.

We are the game development community.

Whether you are an indie, hobbyist, AAA developer, or just trying to learn, GameDev.net is the place for you to learn, share, and connect with the games industry. Learn more About Us or sign up!

Sign me up!