locknode.hpp revision 2073:b92c45f2bc75 
1/*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 * This code is free software; you can redistribute it and/or modify it
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7 * published by the Free Software Foundation.
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11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
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24
25#ifndef SHARE_VM_OPTO_LOCKNODE_HPP
26#define SHARE_VM_OPTO_LOCKNODE_HPP
27
28#include "opto/node.hpp"
29#include "opto/opcodes.hpp"
30#include "opto/subnode.hpp"
31#ifdef TARGET_ARCH_MODEL_x86_32
32# include "adfiles/ad_x86_32.hpp"
33#endif
34#ifdef TARGET_ARCH_MODEL_x86_64
35# include "adfiles/ad_x86_64.hpp"
36#endif
37#ifdef TARGET_ARCH_MODEL_sparc
38# include "adfiles/ad_sparc.hpp"
39#endif
40#ifdef TARGET_ARCH_MODEL_zero
41# include "adfiles/ad_zero.hpp"
42#endif
43#ifdef TARGET_ARCH_MODEL_arm
44# include "adfiles/ad_arm.hpp"
45#endif
46#ifdef TARGET_ARCH_MODEL_ppc
47# include "adfiles/ad_ppc.hpp"
48#endif
49
50//------------------------------BoxLockNode------------------------------------
51class BoxLockNode : public Node {
52public:
53  const int _slot;
54  RegMask   _inmask;
55  bool _is_eliminated;    // indicates this lock was safely eliminated
56
57  BoxLockNode( int lock );
58  virtual int Opcode() const;
59  virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const;
60  virtual uint size(PhaseRegAlloc *ra_) const;
61  virtual const RegMask &in_RegMask(uint) const;
62  virtual const RegMask &out_RegMask() const;
63  virtual uint size_of() const;
64  virtual uint hash() const;
65  virtual uint cmp( const Node &n ) const;
66  virtual const class Type *bottom_type() const { return TypeRawPtr::BOTTOM; }
67  virtual uint ideal_reg() const { return Op_RegP; }
68
69  static OptoReg::Name stack_slot(Node* box_node);
70
71  bool is_eliminated()  { return _is_eliminated; }
72  // mark lock as eliminated.
73  void set_eliminated() { _is_eliminated = true; }
74
75#ifndef PRODUCT
76  virtual void format( PhaseRegAlloc *, outputStream *st ) const;
77  virtual void dump_spec(outputStream *st) const { st->print("  Lock %d",_slot); }
78#endif
79};
80
81//------------------------------FastLockNode-----------------------------------
82class FastLockNode: public CmpNode {
83private:
84  BiasedLockingCounters* _counters;
85
86public:
87  FastLockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) {
88    init_req(0,ctrl);
89    init_class_id(Class_FastLock);
90    _counters = NULL;
91  }
92  Node* obj_node() const { return in(1); }
93  Node* box_node() const { return in(2); }
94
95  // FastLock and FastUnlockNode do not hash, we need one for each correspoding
96  // LockNode/UnLockNode to avoid creating Phi's.
97  virtual uint hash() const ;                  // { return NO_HASH; }
98  virtual uint cmp( const Node &n ) const ;    // Always fail, except on self
99  virtual int Opcode() const;
100  virtual const Type *Value( PhaseTransform *phase ) const { return TypeInt::CC; }
101  const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;}
102
103  void create_lock_counter(JVMState* s);
104  BiasedLockingCounters* counters() const { return _counters; }
105};
106
107
108//------------------------------FastUnlockNode---------------------------------
109class FastUnlockNode: public CmpNode {
110public:
111  FastUnlockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) {
112    init_req(0,ctrl);
113    init_class_id(Class_FastUnlock);
114  }
115  Node* obj_node() const { return in(1); }
116  Node* box_node() const { return in(2); }
117
118
119  // FastLock and FastUnlockNode do not hash, we need one for each correspoding
120  // LockNode/UnLockNode to avoid creating Phi's.
121  virtual uint hash() const ;                  // { return NO_HASH; }
122  virtual uint cmp( const Node &n ) const ;    // Always fail, except on self
123  virtual int Opcode() const;
124  virtual const Type *Value( PhaseTransform *phase ) const { return TypeInt::CC; }
125  const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;}
126
127};
128
129#endif // SHARE_VM_OPTO_LOCKNODE_HPP
130