Mercurial > hg > truffle
diff src/share/vm/memory/blockOffsetTable.cpp @ 3746:537a4053b0f9
7042740: CMS: assert(n> q) failed: Looping at: ... blockOffsetTable.cpp:557
Summary: Do a one-step look-ahead, when sweeping free or garbage blocks, to avoid overstepping sweep limit, which may become a non-block-boundary because of a heap expansion delta coalescing with a previously co-terminal free block.
Reviewed-by: brutisso, tonyp
| author | ysr |
|---|---|
| date | Mon, 23 May 2011 16:42:14 -0700 |
| parents | 7d64aa23eb96 |
| children | d2a62e0f25eb |
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--- a/src/share/vm/memory/blockOffsetTable.cpp Fri May 20 22:27:48 2011 -0700 +++ b/src/share/vm/memory/blockOffsetTable.cpp Mon May 23 16:42:14 2011 -0700 @@ -1,5 +1,5 @@ /* - * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it @@ -566,11 +566,17 @@ q = n; n += _sp->block_size(n); assert(n > q, - err_msg("Looping at n = " PTR_FORMAT " with last = " PTR_FORMAT " _sp = [" PTR_FORMAT "," PTR_FORMAT ")", - n, last, _sp->bottom(), _sp->end())); + err_msg("Looping at n = " PTR_FORMAT " with last = " PTR_FORMAT"," + " while querying blk_start(" PTR_FORMAT ")" + " on _sp = [" PTR_FORMAT "," PTR_FORMAT ")", + n, last, addr, _sp->bottom(), _sp->end())); } - assert(q <= addr, err_msg("wrong order for current (" INTPTR_FORMAT ") <= arg (" INTPTR_FORMAT ")", q, addr)); - assert(addr <= n, err_msg("wrong order for arg (" INTPTR_FORMAT ") <= next (" INTPTR_FORMAT ")", addr, n)); + assert(q <= addr, + err_msg("wrong order for current (" INTPTR_FORMAT ")" " <= arg (" INTPTR_FORMAT ")", + q, addr)); + assert(addr <= n, + err_msg("wrong order for arg (" INTPTR_FORMAT ") <= next (" INTPTR_FORMAT ")", + addr, n)); return q; }