20046c1a18
Remove lock/unlock MemBar nodes and specify locks in debug info for deoptimization. Reviewed-by: never
103 lines
3.9 KiB
C++
103 lines
3.9 KiB
C++
/*
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* Copyright 1999-2006 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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*/
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//------------------------------BoxLockNode------------------------------------
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class BoxLockNode : public Node {
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public:
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const int _slot;
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RegMask _inmask;
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bool _is_eliminated; // indicates this lock was safely eliminated
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BoxLockNode( int lock );
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virtual int Opcode() const;
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virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const;
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virtual uint size(PhaseRegAlloc *ra_) const;
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virtual const RegMask &in_RegMask(uint) const;
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virtual const RegMask &out_RegMask() const;
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virtual uint size_of() const;
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virtual uint hash() const { return Node::hash() + _slot; }
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virtual uint cmp( const Node &n ) const;
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virtual const class Type *bottom_type() const { return TypeRawPtr::BOTTOM; }
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virtual uint ideal_reg() const { return Op_RegP; }
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static OptoReg::Name stack_slot(Node* box_node);
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bool is_eliminated() { return _is_eliminated; }
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// mark lock as eliminated.
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void set_eliminated() { _is_eliminated = true; }
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#ifndef PRODUCT
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virtual void format( PhaseRegAlloc *, outputStream *st ) const;
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virtual void dump_spec(outputStream *st) const { st->print(" Lock %d",_slot); }
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#endif
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};
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//------------------------------FastLockNode-----------------------------------
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class FastLockNode: public CmpNode {
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private:
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BiasedLockingCounters* _counters;
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public:
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FastLockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) {
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init_req(0,ctrl);
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init_class_id(Class_FastLock);
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_counters = NULL;
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}
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Node* obj_node() const { return in(1); }
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Node* box_node() const { return in(2); }
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// FastLock and FastUnlockNode do not hash, we need one for each correspoding
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// LockNode/UnLockNode to avoid creating Phi's.
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virtual uint hash() const ; // { return NO_HASH; }
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virtual uint cmp( const Node &n ) const ; // Always fail, except on self
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virtual int Opcode() const;
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virtual const Type *Value( PhaseTransform *phase ) const { return TypeInt::CC; }
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const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;}
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void create_lock_counter(JVMState* s);
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BiasedLockingCounters* counters() const { return _counters; }
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};
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//------------------------------FastUnlockNode---------------------------------
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class FastUnlockNode: public CmpNode {
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public:
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FastUnlockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) {
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init_req(0,ctrl);
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init_class_id(Class_FastUnlock);
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}
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Node* obj_node() const { return in(1); }
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Node* box_node() const { return in(2); }
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// FastLock and FastUnlockNode do not hash, we need one for each correspoding
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// LockNode/UnLockNode to avoid creating Phi's.
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virtual uint hash() const ; // { return NO_HASH; }
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virtual uint cmp( const Node &n ) const ; // Always fail, except on self
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virtual int Opcode() const;
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virtual const Type *Value( PhaseTransform *phase ) const { return TypeInt::CC; }
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const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;}
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};
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