How to avoid running out of memory in high memory usage application? C / C++

Question

I have written a converter that takes openstreetmap xml files and converts them to a binary runtime rendering format that is typically about 10% of the original size. Input file

Answer 1

How are you allocating memory for points ? Are you allocating point one at a time (e.g. pt = new Point ). Then depending on the size of point, some memory may get wasted. For example on windows memory is allocated in the multiples of 16 bytes, so even if you ask try to allocate 1 byte, OS will actually allocate 16 bytes.

If this is the case, using a memory allocator may help. You can do a quick check using STL allocator. (over load the new operator for the Point class and use the STL allocator to allocate memory rather than 'malloc' or default new operator).