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8003420: NPG: make new GC root for pd_set

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Move protection domain oops from system dictionary entries into a seperate set; the system dictionary references entries in that set now. This allows fast iteration during non-classunloading garbage collection. Implementation based on initial prototype from Ioi Lam (iklam).

Reviewed-by: coleenp, iklam
This commit is contained in:
Thomas Schatzl 2013-10-09 10:57:01 +02:00
parent 2d75de8b05
commit 30ed89669a
7 changed files with 403 additions and 40 deletions
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11
hotspot/src/share/vm/runtime/vmStructs.cpp
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@ -714,11 +714,17 @@ typedef BinaryTreeDictionary<Metablock, FreeList> MetablockTreeDictionary;
nonstatic_field(PlaceholderEntry, _loader_data, ClassLoaderData*) \
\
/**************************/ \
/* ProctectionDomainEntry */ \
/* ProtectionDomainEntry */ \
/**************************/ \
\
nonstatic_field(ProtectionDomainEntry, _next, ProtectionDomainEntry*) \
nonstatic_field(ProtectionDomainEntry, _protection_domain, oop) \
nonstatic_field(ProtectionDomainEntry, _pd_cache, ProtectionDomainCacheEntry*) \
\
/*******************************/ \
/* ProtectionDomainCacheEntry */ \
/*******************************/ \
\
nonstatic_field(ProtectionDomainCacheEntry, _literal, oop) \
\
/*************************/ \
/* LoaderConstraintEntry */ \
@ -1560,6 +1566,7 @@ typedef BinaryTreeDictionary<Metablock, FreeList> MetablockTreeDictionary;
declare_toplevel_type(SystemDictionary) \
declare_toplevel_type(vmSymbols) \
declare_toplevel_type(ProtectionDomainEntry) \
declare_toplevel_type(ProtectionDomainCacheEntry) \
\
declare_toplevel_type(GenericGrowableArray) \
declare_toplevel_type(GrowableArray<int>) \