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7110718: -XX:MarkSweepAlwaysCompactCount=0 crashes the JVM

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Interpret MarkSweepAlwaysCompactCount < 1 as never do full compaction

Reviewed-by: ysr, tonyp, jmasa, johnc
This commit is contained in:
Bengt Rutisson 2011-11-21 07:47:34 +01:00
parent 3cd36270b7
commit 40c94189f7
2 changed files with 6 additions and 4 deletions
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5
hotspot/src/share/vm/memory/space.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 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
@ -533,7 +533,8 @@ protected:
* by the MarkSweepAlwaysCompactCount parameter. \
*/ \
int invocations = SharedHeap::heap()->perm_gen()->stat_record()->invocations;\
bool skip_dead = ((invocations % MarkSweepAlwaysCompactCount) != 0); \
bool skip_dead = (MarkSweepAlwaysCompactCount < 1) \
||((invocations % MarkSweepAlwaysCompactCount) != 0); \
\
size_t allowed_deadspace = 0; \
if (skip_dead) { \