project-base/server-skynet-source-3rd-jemalloc
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Use posix_madvise to purge pages when available

Browse Source
This commit is contained in:
Jin Qian 2020-10-30 14:09:05 -07:00 committed by David Goldblatt
parent 26c1dc5a3a
commit 4e3fe218e9
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/pages.c
View File

@ -332,6 +332,9 @@ pages_purge_lazy(void *addr, size_t size) {
#elif defined(JEMALLOC_PURGE_MADVISE_DONTNEED) && \
!defined(JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS)
return (madvise(addr, size, MADV_DONTNEED) != 0);
#elif defined(JEMALLOC_PURGE_POSIX_MADVISE_DONTNEED) && \
!defined(JEMALLOC_PURGE_POSIX_MADVISE_DONTNEED_ZEROS)
return (posix_madvise(addr, size, POSIX_MADV_DONTNEED) != 0);
#else
not_reached();
#endif
@ -349,6 +352,9 @@ pages_purge_forced(void *addr, size_t size) {
#if defined(JEMALLOC_PURGE_MADVISE_DONTNEED) && \
defined(JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS)
return (madvise(addr, size, MADV_DONTNEED) != 0);
#elif defined(JEMALLOC_PURGE_POSIX_MADVISE_DONTNEED) && \
defined(JEMALLOC_PURGE_POSIX_MADVISE_DONTNEED_ZEROS)
return (posix_madvise(addr, size, POSIX_MADV_DONTNEED) != 0);
#elif defined(JEMALLOC_MAPS_COALESCE)
/* Try to overlay a new demand-zeroed mapping. */
return pages_commit(addr, size);