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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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13
hotspot/src/share/vm/code/debugInfo.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
@ -41,6 +41,10 @@ void DebugInfoWriteStream::write_handle(jobject h) {
write_int(recorder()->oop_recorder()->find_index(h));
}
void DebugInfoWriteStream::write_metadata(Metadata* h) {
write_int(recorder()->oop_recorder()->find_index(h));
}
ScopeValue* DebugInfoReadStream::read_object_value() {
int id = read_int();
#ifdef ASSERT
@ -109,7 +113,7 @@ void LocationValue::print_on(outputStream* st) const {
void ObjectValue::read_object(DebugInfoReadStream* stream) {
_klass = read_from(stream);
assert(_klass->is_constant_oop(), "should be constant klass oop");
assert(_klass->is_constant_oop(), "should be constant java mirror oop");
int length = stream->read_int();
for (int i = 0; i < length; i++) {
ScopeValue* val = read_from(stream);
@ -198,6 +202,9 @@ void ConstantDoubleValue::print_on(outputStream* st) const {
// ConstantOopWriteValue
void ConstantOopWriteValue::write_on(DebugInfoWriteStream* stream) {
assert(JNIHandles::resolve(value()) == NULL ||
Universe::heap()->is_in_reserved(JNIHandles::resolve(value())),
"Should be in heap");
stream->write_int(CONSTANT_OOP_CODE);
stream->write_handle(value());
}
@ -211,6 +218,8 @@ void ConstantOopWriteValue::print_on(outputStream* st) const {
ConstantOopReadValue::ConstantOopReadValue(DebugInfoReadStream* stream) {
_value = Handle(stream->read_oop());
assert(_value() == NULL ||
Universe::heap()->is_in_reserved(_value()), "Should be in heap");
}
void ConstantOopReadValue::write_on(DebugInfoWriteStream* stream) {