Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/runtime/virtualspace.cpp
src/share/vm/runtime/virtualspace.cpp
- changeset 7782
- 30e04eba9e29
- parent 7781
- 33e421924c67
- child 7994
- 04ff2f6cd0eb
- child 9475
- 61523d110335
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| 7781:33e421924c67 | 7782:30e04eba9e29 |
|---|---|
| 50 // Dummy constructor | 50 // Dummy constructor |
| 51 ReservedSpace::ReservedSpace() : _base(NULL), _size(0), _noaccess_prefix(0), | 51 ReservedSpace::ReservedSpace() : _base(NULL), _size(0), _noaccess_prefix(0), |
| 52 _alignment(0), _special(false), _executable(false) { | 52 _alignment(0), _special(false), _executable(false) { |
| 53 } | 53 } |
| 54 | 54 |
| 55 ReservedSpace::ReservedSpace(size_t size, bool prefer_large_pages) { | 55 ReservedSpace::ReservedSpace(size_t size, size_t preferred_page_size) { |
| 56 bool has_preferred_page_size = preferred_page_size != 0; | |
| 56 // Want to use large pages where possible and pad with small pages. | 57 // Want to use large pages where possible and pad with small pages. |
| 57 size_t page_size = os::page_size_for_region_unaligned(size, 1); | 58 size_t page_size = has_preferred_page_size ? preferred_page_size : os::page_size_for_region_unaligned(size, 1); |
| 58 bool large_pages = page_size != (size_t)os::vm_page_size(); | 59 bool large_pages = page_size != (size_t)os::vm_page_size(); |
| 59 size_t alignment; | 60 size_t alignment; |
| 60 if (large_pages && prefer_large_pages) { | 61 if (large_pages && has_preferred_page_size) { |
| 61 alignment = MAX2(page_size, (size_t)os::vm_allocation_granularity()); | 62 alignment = MAX2(page_size, (size_t)os::vm_allocation_granularity()); |
| 62 // ReservedSpace initialization requires size to be aligned to the given | 63 // ReservedSpace initialization requires size to be aligned to the given |
| 63 // alignment. Align the size up. | 64 // alignment. Align the size up. |
| 64 size = align_size_up(size, alignment); | 65 size = align_size_up(size, alignment); |
| 65 } else { | 66 } else { |
