21.10.2013 18:04, dennis luehring пишет:
"...Implementation note:
For small strings tempCString will use stack allocated buffer, for
large strings (approximately 1000 characters and more) it will allocate
temporary one from unstd.memory.allocation.threadHeap..."
does that mean that tempCString reserves minimum 1000 bytes on stack
else using heap?
if so i would prefer a template based version where i can put in the size
Yes, `tempCString` allocates `1024 * To.sizeof` bytes on the stack. Note
that it doesn't initialize the data so it is O(1) operation which will
just do ~1 KiB move of stack pointer. As function stack frame can easily
eat 50-100 bytes it is like 10-20 function calls. IIRC typical stack
size is ~1 MiB and `tempCString` isn't expected to be used in some deep
recursion or be ~1000 times used in one function.
So I'd prefer to change default stack allocation size if needed and not
confuse user with manual choice.
--
Денис В. Шеломовский
Denis V. Shelomovskij
