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6964458: Reimplement class meta-data storage to use native memory

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Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes

Co-authored-by: Stefan Karlsson <stefan.karlsson@oracle.com>
Co-authored-by: Mikael Gerdin <mikael.gerdin@oracle.com>
Co-authored-by: Tom Rodriguez <tom.rodriguez@oracle.com>
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
This commit is contained in:
Jon Masamitsu 2012-09-01 13:25:18 -04:00 • committed by Coleen Phillimore
parent 36eee7c8c8
commit 5c58d27aac
853 changed files with 26124 additions and 82956 deletions
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23
hotspot/src/share/vm/memory/blockOffsetTable.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2000, 2012, 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
@ -98,16 +98,6 @@ bool BlockOffsetSharedArray::is_card_boundary(HeapWord* p) const {
}
void BlockOffsetSharedArray::serialize(SerializeOopClosure* soc,
HeapWord* start, HeapWord* end) {
assert(_offset_array[0] == 0, "objects can't cross covered areas");
assert(start <= end, "bad address range");
size_t start_index = index_for(start);
size_t end_index = index_for(end-1)+1;
soc->do_region(&_offset_array[start_index],
(end_index - start_index) * sizeof(_offset_array[0]));
}
//////////////////////////////////////////////////////////////////////
// BlockOffsetArray
//////////////////////////////////////////////////////////////////////
@ -801,17 +791,6 @@ void BlockOffsetArrayContigSpace::zero_bottom_entry() {
_array->set_offset_array(bottom_index, 0);
}
void BlockOffsetArrayContigSpace::serialize(SerializeOopClosure* soc) {
if (soc->reading()) {
// Null these values so that the serializer won't object to updating them.
_next_offset_threshold = NULL;
_next_offset_index = 0;
}
soc->do_ptr(&_next_offset_threshold);
soc->do_size_t(&_next_offset_index);
}
size_t BlockOffsetArrayContigSpace::last_active_index() const {
size_t result = _next_offset_index - 1;
return result >= 0 ? result : 0;