1 /*
2 * Copyright (c) 1999, 2015, 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 #if defined AD_MD_HPP
32 # include AD_MD_HPP
33 #elif defined TARGET_ARCH_MODEL_x86_32
34 # include "adfiles/ad_x86_32.hpp"
35 #elif defined TARGET_ARCH_MODEL_x86_64
36 # include "adfiles/ad_x86_64.hpp"
37 #elif defined TARGET_ARCH_MODEL_sparc
38 # include "adfiles/ad_sparc.hpp"
39 #elif defined TARGET_ARCH_MODEL_zero
40 # include "adfiles/ad_zero.hpp"
41 #elif defined TARGET_ARCH_MODEL_ppc_64
42 # include "adfiles/ad_ppc_64.hpp"
43 #endif
44
45 //------------------------------BoxLockNode------------------------------------
46 class BoxLockNode : public Node {
47 const int _slot; // stack slot
48 RegMask _inmask; // OptoReg corresponding to stack slot
49 bool _is_eliminated; // Associated locks were safely eliminated
50
51 public:
52 BoxLockNode( int lock );
53 virtual int Opcode() const;
54 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const;
55 virtual uint size(PhaseRegAlloc *ra_) const;
56 virtual const RegMask &in_RegMask(uint) const;
57 virtual const RegMask &out_RegMask() const;
58 virtual uint size_of() const;
59 virtual uint hash() const;
60 virtual uint cmp( const Node &n ) const;
61 virtual const class Type *bottom_type() const { return TypeRawPtr::BOTTOM; }
62 virtual uint ideal_reg() const { return Op_RegP; }
63
64 static OptoReg::Name reg(Node* box_node);
65 static BoxLockNode* box_node(Node* box_node);
66 static bool same_slot(Node* box1, Node* box2) {
67 return box1->as_BoxLock()->_slot == box2->as_BoxLock()->_slot;
68 }
69 int stack_slot() const { return _slot; }
70
71 bool is_eliminated() const { return _is_eliminated; }
72 // mark lock as eliminated.
73 void set_eliminated() { _is_eliminated = true; }
74
75 // Is BoxLock node used for one simple lock region?
76 bool is_simple_lock_region(LockNode** unique_lock, Node* obj);
77
78 #ifndef PRODUCT
79 virtual void format( PhaseRegAlloc *, outputStream *st ) const;
80 virtual void dump_spec(outputStream *st) const { st->print(" Lock %d",_slot); }
81 #endif
82 };
83
84 //------------------------------FastLockNode-----------------------------------
85 class FastLockNode: public CmpNode {
86 private:
87 BiasedLockingCounters* _counters;
88 RTMLockingCounters* _rtm_counters; // RTM lock counters for inflated locks
89 RTMLockingCounters* _stack_rtm_counters; // RTM lock counters for stack locks
90
91 public:
92 FastLockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) {
93 init_req(0,ctrl);
94 init_class_id(Class_FastLock);
95 _counters = NULL;
96 _rtm_counters = NULL;
97 _stack_rtm_counters = NULL;
98 }
99 Node* obj_node() const { return in(1); }
100 Node* box_node() const { return in(2); }
101 void set_box_node(Node* box) { set_req(2, box); }
102
103 // FastLock and FastUnlockNode do not hash, we need one for each correspoding
104 // LockNode/UnLockNode to avoid creating Phi's.
105 virtual uint hash() const ; // { return NO_HASH; }
106 virtual uint size_of() const;
107 virtual uint cmp( const Node &n ) const ; // Always fail, except on self
108 virtual int Opcode() const;
109 virtual const Type *Value( PhaseTransform *phase ) const { return TypeInt::CC; }
110 const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;}
111
112 void create_lock_counter(JVMState* s);
113 void create_rtm_lock_counter(JVMState* state);
114 BiasedLockingCounters* counters() const { return _counters; }
115 RTMLockingCounters* rtm_counters() const { return _rtm_counters; }
116 RTMLockingCounters* stack_rtm_counters() const { return _stack_rtm_counters; }
117 };
118
119
120 //------------------------------FastUnlockNode---------------------------------
121 class FastUnlockNode: public CmpNode {
122 public:
123 FastUnlockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) {
124 init_req(0,ctrl);
125 init_class_id(Class_FastUnlock);
126 }
127 Node* obj_node() const { return in(1); }
128 Node* box_node() const { return in(2); }
129
130
131 // FastLock and FastUnlockNode do not hash, we need one for each correspoding
132 // LockNode/UnLockNode to avoid creating Phi's.
133 virtual uint hash() const ; // { return NO_HASH; }
134 virtual uint cmp( const Node &n ) const ; // Always fail, except on self
135 virtual int Opcode() const;
136 virtual const Type *Value( PhaseTransform *phase ) const { return TypeInt::CC; }
137 const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;}
138
139 };
140
141 #endif // SHARE_VM_OPTO_LOCKNODE_HPP