On Friday, 23 December 2016 at 06:18:02 UTC, Suliman wrote:
I would like to visualize how GC works and display free/not
free memory segments.
How I can understand which of them are used and which not?
Could anybody explain what dangerous of memory fragmentation in
languages without GC? Am I right understand that there is stay
some small memory chunks that very hard to reuse?
You start with a wrong assumption. The C malloc functions is not
just a nasty and mean memory provider. Several implementations
uses internally freelists. Which means that the gaps created by a
free() may be filled again.
For example
- TCMallocator use free lists
- GCC C malloc use free lists (as stated here
http://www.gnu.org/software/libc/manual/html_node/Freeing-after-Malloc.html)
- for snn.lib malloc (used by DMD win32) I can't say.
