/*
* Copyright ( c ) 1999 , 2022 , 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
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*
*/
#ifndef SHARE_OPTO_LOCKNODE_HPP
#define SHARE_OPTO_LOCKNODE_HPP
#include "opto/node.hpp"
#include "opto/opcodes.hpp"
#include "opto/subnode.hpp"
class RTMLockingCounters;
//------------------------------BoxLockNode------------------------------------
class BoxLockNode : public Node {
const int _slot; // stack slot
RegMask _inmask; // OptoReg corresponding to stack slot
bool _is_eliminated; // Associated locks were safely eliminated
public :
BoxLockNode( int lock );
virtual int Opcode() const ;
virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const ;
virtual uint size(PhaseRegAlloc *ra_) const ;
virtual const RegMask &in_RegMask(uint) const ;
virtual const RegMask &out_RegMask() const ;
virtual uint size_of() const ;
virtual uint hash() const ;
virtual bool cmp( const Node &n ) const ;
virtual const class Type *bottom_type() const { return TypeRawPtr::BOTTOM; }
virtual uint ideal_reg() const { return Op_RegP; }
static OptoReg::Name reg(Node* box_node);
static BoxLockNode* box_node(Node* box_node);
static bool same_slot(Node* box1, Node* box2) {
return box1->as_BoxLock()->_slot == box2->as_BoxLock()->_slot;
}
int stack_slot() const { return _slot; }
bool is_eliminated() const { return _is_eliminated; }
// mark lock as eliminated.
void set_eliminated() { _is_eliminated = true ; }
// Is BoxLock node used for one simple lock region?
bool is_simple_lock_region(LockNode** unique_lock, Node* obj, Node** bad_lock);
#ifndef PRODUCT
virtual void format( PhaseRegAlloc *, outputStream *st ) const ;
virtual void dump_spec(outputStream *st) const { st->print(" Lock %d" ,_slot); }
#endif
};
//------------------------------FastLockNode-----------------------------------
class FastLockNode: public CmpNode {
private :
RTMLockingCounters* _rtm_counters; // RTM lock counters for inflated locks
RTMLockingCounters* _stack_rtm_counters; // RTM lock counters for stack locks
public :
FastLockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) {
init_req(0 ,ctrl);
init_class_id(Class_FastLock);
_rtm_counters = NULL;
_stack_rtm_counters = NULL;
}
Node* obj_node() const { return in(1 ); }
Node* box_node() const { return in(2 ); }
void set_box_node(Node* box) { set_req(2 , box); }
// FastLock and FastUnlockNode do not hash, we need one for each corresponding
// LockNode/UnLockNode to avoid creating Phi's.
virtual uint hash() const ; // { return NO_HASH; }
virtual uint size_of() const ;
virtual bool cmp( const Node &n ) const ; // Always fail, except on self
virtual int Opcode() const ;
virtual const Type* Value(PhaseGVN* phase) const { return TypeInt::CC; }
const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;}
void create_rtm_lock_counter(JVMState* state);
RTMLockingCounters* rtm_counters() const { return _rtm_counters; }
RTMLockingCounters* stack_rtm_counters() const { return _stack_rtm_counters; }
};
//------------------------------FastUnlockNode---------------------------------
class FastUnlockNode: public CmpNode {
public :
FastUnlockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) {
init_req(0 ,ctrl);
init_class_id(Class_FastUnlock);
}
Node* obj_node() const { return in(1 ); }
Node* box_node() const { return in(2 ); }
// FastLock and FastUnlockNode do not hash, we need one for each corresponding
// LockNode/UnLockNode to avoid creating Phi's.
virtual uint hash() const ; // { return NO_HASH; }
virtual bool cmp( const Node &n ) const ; // Always fail, except on self
virtual int Opcode() const ;
virtual const Type* Value(PhaseGVN* phase) const { return TypeInt::CC; }
const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;}
};
#endif // SHARE_OPTO_LOCKNODE_HPP
Messung V0.5 in Prozent C=85 H=100 G=92
¤ Dauer der Verarbeitung: 0.17 Sekunden
(vorverarbeitet am 2026-10-02)
¤
*© Formatika GbR, Deutschland