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8146523: VirtualMemoryTracker::remove_released_region double count unmapped CDS shared memory

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Skip tracking release for unmapped CDS shared space.

Reviewed-by: dholmes, coleenp, iklam, gtriantafill
This commit is contained in:
Jiangli Zhou 2016-01-12 19:15:42 -05:00
parent ee04eabcd1
commit 50bcef8c75
1 changed files with 9 additions and 1 deletions
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10
hotspot/src/share/vm/services/virtualMemoryTracker.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2013, 2016, 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
@ -416,6 +416,14 @@ bool VirtualMemoryTracker::remove_released_region(address addr, size_t size) {
return false;
}
if (reserved_rgn->flag() == mtClassShared &&
reserved_rgn->contain_region(addr, size) &&
!reserved_rgn->same_region(addr, size)) {
// This is an unmapped CDS region, which is part of the reserved shared
// memory region.
// See special handling in VirtualMemoryTracker::add_reserved_region also.
return true;
}
VirtualMemorySummary::record_released_memory(size, reserved_rgn->flag());