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This commit is contained in:
Daan Leijen 2022-01-10 15:40:22 -08:00
commit a763b6310d
1 changed files with 2 additions and 2 deletions
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src/os.c
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@ -917,12 +917,12 @@ static bool mi_os_commitx(void* addr, size_t size, bool commit, bool conservativ
if (err != 0) { err = errno; } if (err != 0) { err = errno; }
} }
else { else {
#if defined(MADV_DONTNEED) #if defined(MADV_DONTNEED) && MI_DEBUG == 0 && MI_SECURE == 0
// decommit: use MADV_DONTNEED as it decreases rss immediately (unlike MADV_FREE) // 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 :-( ) // (on the other hand, MADV_FREE would be good enough.. it is just not reflected in the stats :-( )
err = madvise(start, csize, MADV_DONTNEED); err = madvise(start, csize, MADV_DONTNEED);
#else #else
// decommit: just disable access // decommit: just disable access (also used in debug and secure mode to trap on illegal access)
err = mprotect(start, csize, PROT_NONE); err = mprotect(start, csize, PROT_NONE);
if (err != 0) { err = errno; } if (err != 0) { err = errno; }
#endif #endif