archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-09-17 09:34:38 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

7133093: Improve system dictionary performance

Browse source 
Implement one dictionary per ClassLoaderData for faster lookup and removal during class unloading

Reviewed-by: iklam, acorn, jiangli
This commit is contained in:
Coleen Phillimore 2017-07-28 10:48:35 -04:00
parent b170f01ddd
commit a1f70549e4
52 changed files with 781 additions and 1466 deletions
Download patch file Download diff file Expand all files Collapse all files

4
hotspot/src/share/vm/classfile/protectionDomainCache.hpp
View file

@ -33,7 +33,7 @@
// Dictionary entry pd_set point to entries in this hashtable. Please refer
// to dictionary.hpp pd_set for more information about how protection domain entries
// are used.
// This table is walked during GC, rather than the entire system dictionary
// This table is walked during GC, rather than the class loader data graph dictionaries.
class ProtectionDomainCacheEntry : public HashtableEntry<oop, mtClass> {
friend class VMStructs;
public:
@ -55,7 +55,7 @@ class ProtectionDomainCacheEntry : public HashtableEntry<oop, mtClass> {
void verify();
};
// The ProtectionDomainCacheTable contains all protection domain oops. The system
// The ProtectionDomainCacheTable contains all protection domain oops. The
// dictionary entries reference its entries instead of having references to oops
// directly.
// This is used to speed up system dictionary iteration: the oops in the