Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/os/linux/vm/os_linux.cpp
src/os/linux/vm/os_linux.cpp
- changeset 3640
- cf956638b844
- parent 3612
- 9eaf473fff9b
- child 3783
- 7432b9db36ff
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| 3636:fde683df4c27 | 3640:cf956638b844 |
|---|---|
| 2545 ::madvise(addr, bytes, MADV_HUGEPAGE); | 2545 ::madvise(addr, bytes, MADV_HUGEPAGE); |
| 2546 } | 2546 } |
| 2547 } | 2547 } |
| 2548 | 2548 |
| 2549 void os::free_memory(char *addr, size_t bytes, size_t alignment_hint) { | 2549 void os::free_memory(char *addr, size_t bytes, size_t alignment_hint) { |
| 2550 commit_memory(addr, bytes, alignment_hint, false); | 2550 // This method works by doing an mmap over an existing mmaping and effectively discarding |
| 2551 // the existing pages. However it won't work for SHM-based large pages that cannot be | |
| 2552 // uncommitted at all. We don't do anything in this case to avoid creating a segment with | |
| 2553 // small pages on top of the SHM segment. This method always works for small pages, so we | |
| 2554 // allow that in any case. | |
| 2555 if (alignment_hint <= (size_t)os::vm_page_size() || !UseSHM) { | |
| 2556 commit_memory(addr, bytes, alignment_hint, false); | |
| 2557 } | |
| 2551 } | 2558 } |
| 2552 | 2559 |
| 2553 void os::numa_make_global(char *addr, size_t bytes) { | 2560 void os::numa_make_global(char *addr, size_t bytes) { |
| 2554 Linux::numa_interleave_memory(addr, bytes); | 2561 Linux::numa_interleave_memory(addr, bytes); |
| 2555 } | 2562 } |
