Mercurial > hg > graal-jvmci-8
comparison src/share/vm/gc_implementation/shared/mutableSpace.cpp @ 22973:340ca8812af9
8067469: G1 ignores AlwaysPreTouch
Summary: Factor out pretouch code of the various virtual space management classes and use them everywhere including in G1.
Reviewed-by: stefank, ehelin, dholmes
| author | tschatzl |
|---|---|
| date | Thu, 18 Dec 2014 09:37:02 +0100 |
| parents | 78bbf4d43a14 |
| children | dd9cc155639c |
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| 22972:41a855ff6305 | 22973:340ca8812af9 |
|---|---|
| 60 } | 60 } |
| 61 } | 61 } |
| 62 } | 62 } |
| 63 | 63 |
| 64 void MutableSpace::pretouch_pages(MemRegion mr) { | 64 void MutableSpace::pretouch_pages(MemRegion mr) { |
| 65 for (volatile char *p = (char*)mr.start(); p < (char*)mr.end(); p += os::vm_page_size()) { | 65 os::pretouch_memory((char*)mr.start(), (char*)mr.end()); |
| 66 char t = *p; *p = t; | |
| 67 } | |
| 68 } | 66 } |
| 69 | 67 |
| 70 void MutableSpace::initialize(MemRegion mr, | 68 void MutableSpace::initialize(MemRegion mr, |
| 71 bool clear_space, | 69 bool clear_space, |
| 72 bool mangle_space, | 70 bool mangle_space, |