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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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33
hotspot/src/share/vm/ci/ciMethodData.hpp
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2001, 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
@ -29,7 +29,7 @@
#include "ci/ciKlass.hpp"
#include "ci/ciObject.hpp"
#include "ci/ciUtilities.hpp"
#include "oops/methodDataOop.hpp"
#include "oops/methodData.hpp"
#include "oops/oop.inline.hpp"
class ciBitData;
@ -71,9 +71,9 @@ public:
ciKlass* receiver(uint row) {
assert((uint)row < row_limit(), "oob");
ciObject* recv = (ciObject*)intptr_at(receiver0_offset + row * receiver_type_row_cell_count);
ciKlass* recv = (ciKlass*)intptr_at(receiver0_offset + row * receiver_type_row_cell_count);
assert(recv == NULL || recv->is_klass(), "wrong type");
return (ciKlass*)recv;
return recv;
}
// Copy & translate from oop based ReceiverTypeData
@ -139,10 +139,10 @@ public:
// ciMethodData
//
// This class represents a methodDataOop in the HotSpot virtual
// This class represents a MethodData* in the HotSpot virtual
// machine.
class ciMethodData : public ciObject {
class ciMethodData : public ciMetadata {
CI_PACKAGE_ACCESS
private:
@ -179,9 +179,9 @@ private:
int _backedge_counter;
// Coherent snapshot of original header.
methodDataOopDesc _orig;
MethodData _orig;
ciMethodData(methodDataHandle h_md);
ciMethodData(MethodData* md);
ciMethodData();
// Accessors
@ -189,11 +189,8 @@ private:
int extra_data_size() const { return _extra_data_size; }
intptr_t * data() const { return _data; }
methodDataOop get_methodDataOop() const {
if (handle() == NULL) return NULL;
methodDataOop mdo = (methodDataOop)get_oop();
assert(mdo != NULL, "illegal use of unloaded method data");
return mdo;
MethodData* get_MethodData() const {
return (MethodData*)_metadata;
}
const char* type_string() { return "ciMethodData"; }
@ -232,7 +229,7 @@ private:
ciArgInfoData *arg_info() const;
public:
bool is_method_data() { return true; }
bool is_method_data() const { return true; }
void set_mature() { _state = mature_state; }
@ -244,7 +241,7 @@ public:
int invocation_count() { return _invocation_counter; }
int backedge_count() { return _backedge_counter; }
// Transfer information about the method to methodDataOop.
// Transfer information about the method to MethodData*.
// would_profile means we would like to profile this method,
// meaning it's not trivial.
void set_would_profile(bool p);
@ -300,9 +297,9 @@ public:
bool has_escape_info();
void update_escape_info();
void set_eflag(methodDataOopDesc::EscapeFlag f);
void clear_eflag(methodDataOopDesc::EscapeFlag f);
bool eflag_set(methodDataOopDesc::EscapeFlag f) const;
void set_eflag(MethodData::EscapeFlag f);
void clear_eflag(MethodData::EscapeFlag f);
bool eflag_set(MethodData::EscapeFlag f) const;
void set_arg_local(int i);
void set_arg_stack(int i);