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8246340: Move SystemDictionary GC roots into OopStorage

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Use vm_global() OopStorage for system dictionary roots

Reviewed-by: eosterlund, lfoltan
This commit is contained in:
Coleen Phillimore 2020-06-05 09:55:31 -04:00
parent 06e47d05b6
commit 498b0e61ed
31 changed files with 149 additions and 167 deletions
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30
src/hotspot/share/classfile/dictionary.cpp
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@ -33,6 +33,7 @@
#include "memory/metaspaceClosure.hpp"
#include "memory/resourceArea.hpp"
#include "oops/oop.inline.hpp"
#include "oops/oopHandle.inline.hpp"
#include "runtime/mutexLocker.hpp"
#include "runtime/safepointVerifiers.hpp"
#include "utilities/hashtable.inline.hpp"
@ -400,6 +401,20 @@ void Dictionary::clean_cached_protection_domains() {
}
}
oop SymbolPropertyEntry::method_type() const {
return _method_type.resolve();
}
void SymbolPropertyEntry::set_method_type(oop p) {
_method_type = OopHandle::create(p);
}
void SymbolPropertyEntry::free_entry() {
// decrement Symbol refcount here because hashtable doesn't.
literal()->decrement_refcount();
// Free OopHandle
_method_type.release();
}
SymbolPropertyTable::SymbolPropertyTable(int table_size)
: Hashtable<Symbol*, mtSymbol>(table_size, sizeof(SymbolPropertyEntry))
@ -436,16 +451,6 @@ SymbolPropertyEntry* SymbolPropertyTable::add_entry(int index, unsigned int hash
return p;
}
void SymbolPropertyTable::oops_do(OopClosure* f) {
for (int index = 0; index < table_size(); index++) {
for (SymbolPropertyEntry* p = bucket(index); p != NULL; p = p->next()) {
if (p->method_type() != NULL) {
f->do_oop(p->method_type_addr());
}
}
}
}
void SymbolPropertyTable::methods_do(void f(Method*)) {
for (int index = 0; index < table_size(); index++) {
for (SymbolPropertyEntry* p = bucket(index); p != NULL; p = p->next()) {
@ -457,6 +462,11 @@ void SymbolPropertyTable::methods_do(void f(Method*)) {
}
}
void SymbolPropertyTable::free_entry(SymbolPropertyEntry* entry) {
entry->free_entry();
Hashtable<Symbol*, mtSymbol>::free_entry(entry);
}
void DictionaryEntry::verify_protection_domain_set() {
MutexLocker ml(ProtectionDomainSet_lock, Mutex::_no_safepoint_check_flag);
for (ProtectionDomainEntry* current = pd_set(); // accessed at a safepoint