Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/shared/immutableSpace.cpp @ 1951:899bbbdcb6ea
6997298: fatal error: must own lock CMS_markBitMap_lock during heap dump
Summary: Since we are at a stop-world pause, the existing CMS-phase checks are sufficient for safety, and the locking check can be safely elided. Elaborated documentation comment to the case where class unloading and verification are disabled, and the query happens when we aren't in the sweeping phase, where the answer "false" would be (almost everywhere) too pessimistic.
Reviewed-by: jmasa, johnc, tonyp
| author | ysr |
|---|---|
| date | Fri, 05 Nov 2010 13:20:37 -0700 |
| parents | c18cbe5936b8 |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 # include "incls/_precompiled.incl" | |
| 26 # include "incls/_immutableSpace.cpp.incl" | |
| 27 | |
| 28 void ImmutableSpace::initialize(MemRegion mr) { | |
| 29 HeapWord* bottom = mr.start(); | |
| 30 HeapWord* end = mr.end(); | |
| 31 | |
| 32 assert(Universe::on_page_boundary(bottom) && Universe::on_page_boundary(end), | |
| 33 "invalid space boundaries"); | |
| 34 | |
| 35 _bottom = bottom; | |
| 36 _end = end; | |
| 37 } | |
| 38 | |
| 39 void ImmutableSpace::oop_iterate(OopClosure* cl) { | |
| 40 HeapWord* obj_addr = bottom(); | |
| 41 HeapWord* t = end(); | |
| 42 // Could call objects iterate, but this is easier. | |
| 43 while (obj_addr < t) { | |
| 44 obj_addr += oop(obj_addr)->oop_iterate(cl); | |
| 45 } | |
| 46 } | |
| 47 | |
| 48 void ImmutableSpace::object_iterate(ObjectClosure* cl) { | |
| 49 HeapWord* p = bottom(); | |
| 50 while (p < end()) { | |
| 51 cl->do_object(oop(p)); | |
| 52 p += oop(p)->size(); | |
| 53 } | |
| 54 } | |
| 55 | |
| 56 #ifndef PRODUCT | |
| 57 | |
| 58 void ImmutableSpace::print_short() const { | |
| 59 tty->print(" space " SIZE_FORMAT "K, 100%% used", capacity_in_bytes() / K); | |
| 60 } | |
| 61 | |
| 62 void ImmutableSpace::print() const { | |
| 63 print_short(); | |
| 64 tty->print_cr(" [%#-6lx,%#-6lx)", bottom(), end()); | |
| 65 } | |
| 66 | |
| 67 #endif | |
| 68 | |
|
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d1635bf93939
6711930: NUMA allocator: ParOld can create a hole less than minimal object size in the lgrp chunk
iveresov
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69 void ImmutableSpace::verify(bool allow_dirty) { |
| 0 | 70 HeapWord* p = bottom(); |
| 71 HeapWord* t = end(); | |
| 72 HeapWord* prev_p = NULL; | |
| 73 while (p < t) { | |
| 74 oop(p)->verify(); | |
| 75 prev_p = p; | |
| 76 p += oop(p)->size(); | |
| 77 } | |
| 78 guarantee(p == end(), "end of last object must match end of space"); | |
| 79 } |