locknode.hpp revision 1879:f95d63e2154a 
1/*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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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
44//------------------------------BoxLockNode------------------------------------
45class BoxLockNode : public Node {
46public:
47  const int _slot;
48  RegMask   _inmask;
49  bool _is_eliminated;    // indicates this lock was safely eliminated
50
51  BoxLockNode( int lock );
52  virtual int Opcode() const;
53  virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const;
54  virtual uint size(PhaseRegAlloc *ra_) const;
55  virtual const RegMask &in_RegMask(uint) const;
56  virtual const RegMask &out_RegMask() const;
57  virtual uint size_of() const;
58  virtual uint hash() const;
59  virtual uint cmp( const Node &n ) const;
60  virtual const class Type *bottom_type() const { return TypeRawPtr::BOTTOM; }
61  virtual uint ideal_reg() const { return Op_RegP; }
62
63  static OptoReg::Name stack_slot(Node* box_node);
64
65  bool is_eliminated()  { return _is_eliminated; }
66  // mark lock as eliminated.
67  void set_eliminated() { _is_eliminated = true; }
68
69#ifndef PRODUCT
70  virtual void format( PhaseRegAlloc *, outputStream *st ) const;
71  virtual void dump_spec(outputStream *st) const { st->print("  Lock %d",_slot); }
72#endif
73};
74
75//------------------------------FastLockNode-----------------------------------
76class FastLockNode: public CmpNode {
77private:
78  BiasedLockingCounters* _counters;
79
80public:
81  FastLockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) {
82    init_req(0,ctrl);
83    init_class_id(Class_FastLock);
84    _counters = NULL;
85  }
86  Node* obj_node() const { return in(1); }
87  Node* box_node() const { return in(2); }
88
89  // FastLock and FastUnlockNode do not hash, we need one for each correspoding
90  // LockNode/UnLockNode to avoid creating Phi's.
91  virtual uint hash() const ;                  // { return NO_HASH; }
92  virtual uint cmp( const Node &n ) const ;    // Always fail, except on self
93  virtual int Opcode() const;
94  virtual const Type *Value( PhaseTransform *phase ) const { return TypeInt::CC; }
95  const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;}
96
97  void create_lock_counter(JVMState* s);
98  BiasedLockingCounters* counters() const { return _counters; }
99};
100
101
102//------------------------------FastUnlockNode---------------------------------
103class FastUnlockNode: public CmpNode {
104public:
105  FastUnlockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) {
106    init_req(0,ctrl);
107    init_class_id(Class_FastUnlock);
108  }
109  Node* obj_node() const { return in(1); }
110  Node* box_node() const { return in(2); }
111
112
113  // FastLock and FastUnlockNode do not hash, we need one for each correspoding
114  // LockNode/UnLockNode to avoid creating Phi's.
115  virtual uint hash() const ;                  // { return NO_HASH; }
116  virtual uint cmp( const Node &n ) const ;    // Always fail, except on self
117  virtual int Opcode() const;
118  virtual const Type *Value( PhaseTransform *phase ) const { return TypeInt::CC; }
119  const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;}
120
121};
122
123#endif // SHARE_VM_OPTO_LOCKNODE_HPP
124