kiper220/mimalloc
1
0
Fork 0
mirror of https://github.com/microsoft/mimalloc.git synced 2025-07-12 14:18:42 +03:00
Code Issues Projects Releases Packages Wiki Activity Actions

clarify needs_recommit

Browse source
This commit is contained in:
daanx 2023-04-04 13:05:48 -07:00
parent 5c39fe7246
commit 1d231be758
5 changed files with 22 additions and 22 deletions
Download patch file Download diff file Expand all files Collapse all files

6
src/prim/unix/prim.c
View file

@ -352,16 +352,16 @@ int _mi_prim_commit(void* start, size_t size) {
return err;
}
int _mi_prim_decommit(void* start, size_t size, bool* decommitted) {
int _mi_prim_decommit(void* start, size_t size, bool* needs_recommit) {
int err = 0;
#if defined(MADV_DONTNEED) && !MI_DEBUG && !MI_SECURE
// decommit: use MADV_DONTNEED as it decreases rss immediately (unlike MADV_FREE)
// (on the other hand, MADV_FREE would be good enough.. it is just not reflected in the stats :-( )
*decommitted = false;
*needs_recommit = false;
err = unix_madvise(start, size, MADV_DONTNEED);
#else
// decommit: just disable access (also used in debug and secure mode to trap on illegal access)
*decommitted = true; // needs recommit to reuse the memory
*needs_recommit = true; // needs recommit to reuse the memory
err = mprotect(start, size, PROT_NONE);
if (err != 0) { err = errno; }
#endif