[ft-devel] Determining Upper Bound of memory consumption for a system using FT cache subsystem

[Maggy Anastasia]

Dear FreeType Developers,

I have a few questions regarding freetype memory consumption upper bound; I am 
using Freetyper version 2.3.7

(1) static array: currently we know that 
all memory consumption by freetype is done through malloc calls and its 
variants. However, is there any other memory used in freetype, such as global 
arrays, which are used for memory allocation? If so, do they need any kind of 
configuration?

(2) Is there a way for determining the upper bound of 
memory usage for freetype when cache is being used. I know that we can set the 
upper bound for cache nodes (glyph image, cmap, sbitchace, etc.), but is there a 
way to determine the memory consumption for FT_FACE and FT_SIZE? From what I 
have seen regarding this, we can only limit the number of FT_FACE and FT_SIZE; 
however, how to determine the memory requirements for a given number of 
allowable FT_FACE and FT_SIZE. I am using freetype for an embedded system at the 
moment, thus, memory is really a constraint, and it's very important for me to 
be able to determine the size of the heap.


best regards

Maggy Anastasia Suryanto