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Use madvise(..., MADV_FREE) on OS X.

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Use madvise(..., MADV_FREE) rather than msync(..., MS_KILLPAGES) on OS
X, since it works for at least OS X 10.5 and 10.6.
This commit is contained in:
Jason Evans
2010-10-24 13:03:07 -07:00
parent 0d38791e7a
commit ce93055c49
3 changed files with 4 additions and 10 deletions
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9
jemalloc/include/jemalloc/jemalloc_defs.h.in
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@@ -121,15 +121,12 @@
* madvise(..., MADV_DONTNEED) : On Linux, this immediately discards pages,
* such that new pages will be demand-zeroed if
* the address region is later touched.
* madvise(..., MADV_FREE) : On FreeBSD, this marks pages as being unused,
* such that they will be discarded rather than
* swapped out.
* msync(..., MS_KILLPAGES) : On Darwin, this behaves similarly to
* madvise(..., MADV_FREE) on FreeBSD.
* madvise(..., MADV_FREE) : On FreeBSD and Darwin, this marks pages as being
* unused, such that they will be discarded rather
* than swapped out.
*/
#undef JEMALLOC_PURGE_MADVISE_DONTNEED
#undef JEMALLOC_PURGE_MADVISE_FREE
#undef JEMALLOC_PURGE_MSYNC_KILLPAGES
/* sizeof(void *) == 2^LG_SIZEOF_PTR. */
#undef LG_SIZEOF_PTR