1 /*
2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
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
6 * under the terms of the GNU General Public License version 2 only, as
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.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
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------------------------------------
45 class BoxLockNode : public Node {
46 public:
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-----------------------------------
76 class FastLockNode: public CmpNode {
77 private:
78 BiasedLockingCounters* _counters;
79
80 public:
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---------------------------------
103 class FastUnlockNode: public CmpNode {
104 public:
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