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/*
* Copyright 1999-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
//------------------------------BoxLockNode------------------------------------
class BoxLockNode : public Node {
public:
const int _slot;
RegMask _inmask;
bool _is_eliminated; // indicates this lock was safely eliminated
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 { return Node::hash() + _slot; }
virtual uint 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 stack_slot(Node* box_node);
bool is_eliminated() { return _is_eliminated; }
// mark lock as eliminated.
void set_eliminated() { _is_eliminated = true; }
#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:
BiasedLockingCounters* _counters;
public:
FastLockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) {
init_req(0,ctrl);
init_class_id(Class_FastLock);
_counters = NULL;
}
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 correspoding
// LockNode/UnLockNode to avoid creating Phi's.
virtual uint hash() const ; // { return NO_HASH; }
virtual uint cmp( const Node &n ) const ; // Always fail, except on self
virtual int Opcode() const;
virtual const Type *Value( PhaseTransform *phase ) const { return TypeInt::CC; }
const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;}
void create_lock_counter(JVMState* s);
BiasedLockingCounters* counters() const { return _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 correspoding
// LockNode/UnLockNode to avoid creating Phi's.
virtual uint hash() const ; // { return NO_HASH; }
virtual uint cmp( const Node &n ) const ; // Always fail, except on self
virtual int Opcode() const;
virtual const Type *Value( PhaseTransform *phase ) const { return TypeInt::CC; }
const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;}
};
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