Mercurial > hg > graal-jvmci-8
diff src/share/vm/runtime/os.hpp @ 22976:5788dbd1f2d6
8066875: VirtualSpace does not use large pages
Reviewed-by: stefank, tschatzl, anoll, thartmann
| author | ehelin |
|---|---|
| date | Fri, 16 Jan 2015 10:29:12 +0100 |
| parents | c2ce24504334 |
| children | dd9cc155639c ca765f57fe3c |
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--- a/src/share/vm/runtime/os.hpp Wed Nov 26 10:32:21 2014 -0800 +++ b/src/share/vm/runtime/os.hpp Fri Jan 16 10:29:12 2015 +0100 @@ -149,6 +149,7 @@ static void pd_free_memory(char *addr, size_t bytes, size_t alignment_hint); static void pd_realign_memory(char *addr, size_t bytes, size_t alignment_hint); + static size_t page_size_for_region(size_t region_size, size_t min_pages, bool must_be_aligned); public: static void init(void); // Called before command line parsing @@ -267,8 +268,13 @@ // Returns the page size to use for a region of memory. // region_size / min_pages will always be greater than or equal to the - // returned value. - static size_t page_size_for_region(size_t region_size, size_t min_pages); + // returned value. The returned value will divide region_size. + static size_t page_size_for_region_aligned(size_t region_size, size_t min_pages); + + // Returns the page size to use for a region of memory. + // region_size / min_pages will always be greater than or equal to the + // returned value. The returned value might not divide region_size. + static size_t page_size_for_region_unaligned(size_t region_size, size_t min_pages); // Return the largest page size that can be used static size_t max_page_size() {