Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/g1/heapRegionSeq.inline.hpp @ 1842:6e0aac35bfa9
6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
Summary: Under certain circumstances a safepoint could happen between a JavaThread object being created and that object being added to the Java threads list. This could cause the active field of that thread's SATB queue to get out-of-sync with respect to the other Java threads. The solution is to activate the SATB queue, when necessary, before adding the thread to the Java threads list, not when the JavaThread object is created. The changeset also includes a small fix to rename the surrogate locker thread from "Surrogate Locker Thread (CMS)" to "Surrogate Locker Thread (Concurrent GC)" since it's also used in G1.
Reviewed-by: iveresov, ysr, johnc, jcoomes
| author | tonyp |
|---|---|
| date | Fri, 01 Oct 2010 16:43:05 -0400 |
| parents | c18cbe5936b8 |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 342 | 1 /* |
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2 * Copyright (c) 2001, 2007, Oracle and/or its affiliates. All rights reserved. |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 342 | 22 * |
| 23 */ | |
| 24 | |
| 25 inline HeapRegion* HeapRegionSeq::addr_to_region(const void* addr) { | |
| 26 assert(_seq_bottom != NULL, "bad _seq_bottom in addr_to_region"); | |
| 27 if ((char*) addr >= _seq_bottom) { | |
| 28 size_t diff = (size_t) pointer_delta((HeapWord*) addr, | |
| 29 (HeapWord*) _seq_bottom); | |
| 30 int index = (int) (diff >> HeapRegion::LogOfHRGrainWords); | |
| 31 assert(index >= 0, "invariant / paranoia"); | |
| 32 if (index < _regions.length()) { | |
| 33 HeapRegion* hr = _regions.at(index); | |
| 34 assert(hr->is_in_reserved(addr), | |
| 35 "addr_to_region is wrong..."); | |
| 36 return hr; | |
| 37 } | |
| 38 } | |
| 39 return NULL; | |
| 40 } |