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8213229: Investigate treating StringTable as weak in young collections

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Reviewed-by: zgu, kbarrett
This commit is contained in:
Thomas Schatzl 2019-01-29 11:30:17 +01:00
parent 51e2252a73
commit d800361151
42 changed files with 319 additions and 555 deletions
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9
src/hotspot/share/gc/parallel/psParallelCompact.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2005, 2018, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2005, 2019, 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
@ -2184,12 +2184,6 @@ void PSParallelCompact::marking_phase(ParCompactionManager* cm,
Klass::clean_weak_klass_links(purged_class);
}
{
GCTraceTime(Debug, gc, phases) t("Scrub String Table", &_gc_timer);
// Delete entries for dead interned strings.
StringTable::unlink(is_alive_closure());
}
{
GCTraceTime(Debug, gc, phases) t("Scrub Symbol Table", &_gc_timer);
// Clean up unreferenced symbols in symbol table.
@ -2226,7 +2220,6 @@ void PSParallelCompact::adjust_roots(ParCompactionManager* cm) {
CodeBlobToOopClosure adjust_from_blobs(&oop_closure, CodeBlobToOopClosure::FixRelocations);
CodeCache::blobs_do(&adjust_from_blobs);
AOTLoader::oops_do(&oop_closure);
StringTable::oops_do(&oop_closure);
ref_processor()->weak_oops_do(&oop_closure);
// Roots were visited so references into the young gen in roots
// may have been scanned. Process them also.