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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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15
hotspot/src/share/vm/utilities/globalDefinitions.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 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
@ -112,6 +112,7 @@ void basic_types_init() {
case T_LONG:
case T_OBJECT:
case T_ADDRESS: // random raw pointer
case T_METADATA: // metadata pointer
case T_NARROWOOP: // compressed pointer
case T_CONFLICT: // might as well support a bottom type
case T_VOID: // padding or other unaddressed word
@ -178,7 +179,7 @@ void basic_types_init() {
// Map BasicType to signature character
char type2char_tab[T_CONFLICT+1]={ 0, 0, 0, 0, 'Z', 'C', 'F', 'D', 'B', 'S', 'I', 'J', 'L', '[', 'V', 0, 0, 0};
char type2char_tab[T_CONFLICT+1]={ 0, 0, 0, 0, 'Z', 'C', 'F', 'D', 'B', 'S', 'I', 'J', 'L', '[', 'V', 0, 0, 0, 0};
// Map BasicType to Java type name
const char* type2name_tab[T_CONFLICT+1] = {
@ -196,6 +197,7 @@ const char* type2name_tab[T_CONFLICT+1] = {
"void",
"*address*",
"*narrowoop*",
"*metadata*",
"*conflict*"
};
@ -231,7 +233,8 @@ BasicType type2field[T_CONFLICT+1] = {
T_VOID, // T_VOID = 14,
T_ADDRESS, // T_ADDRESS = 15,
T_NARROWOOP, // T_NARROWOOP= 16,
T_CONFLICT // T_CONFLICT = 17,
T_METADATA, // T_METADATA = 17,
T_CONFLICT // T_CONFLICT = 18,
};
@ -253,7 +256,8 @@ BasicType type2wfield[T_CONFLICT+1] = {
T_VOID, // T_VOID = 14,
T_ADDRESS, // T_ADDRESS = 15,
T_NARROWOOP, // T_NARROWOOP = 16,
T_CONFLICT // T_CONFLICT = 17,
T_METADATA, // T_METADATA = 17,
T_CONFLICT // T_CONFLICT = 18,
};
@ -275,7 +279,8 @@ int _type2aelembytes[T_CONFLICT+1] = {
0, // T_VOID = 14,
T_OBJECT_aelem_bytes, // T_ADDRESS = 15,
T_NARROWOOP_aelem_bytes,// T_NARROWOOP= 16,
0 // T_CONFLICT = 17,
T_OBJECT_aelem_bytes, // T_METADATA = 17,
0 // T_CONFLICT = 18,
};
#ifdef ASSERT