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comparison src/share/vm/opto/locknode.hpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children 6dbf1a175d6b
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 1999-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 //------------------------------BoxLockNode------------------------------------
26 class BoxLockNode : public Node {
27 public:
28 const int _slot;
29 RegMask _inmask;
30
31 BoxLockNode( int lock );
32 virtual int Opcode() const;
33 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const;
34 virtual uint size(PhaseRegAlloc *ra_) const;
35 virtual const RegMask &in_RegMask(uint) const;
36 virtual const RegMask &out_RegMask() const;
37 virtual uint size_of() const;
38 virtual uint hash() const { return Node::hash() + _slot; }
39 virtual uint cmp( const Node &n ) const;
40 virtual const class Type *bottom_type() const { return TypeRawPtr::BOTTOM; }
41 virtual uint ideal_reg() const { return Op_RegP; }
42
43 static OptoReg::Name stack_slot(Node* box_node);
44
45 #ifndef PRODUCT
46 virtual void format( PhaseRegAlloc *, outputStream *st ) const;
47 virtual void dump_spec(outputStream *st) const { st->print(" Lock %d",_slot); }
48 #endif
49 };
50
51 //------------------------------FastLockNode-----------------------------------
52 class FastLockNode: public CmpNode {
53 private:
54 BiasedLockingCounters* _counters;
55
56 public:
57 FastLockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) {
58 init_req(0,ctrl);
59 init_class_id(Class_FastLock);
60 _counters = NULL;
61 }
62 Node* obj_node() const { return in(1); }
63 Node* box_node() const { return in(2); }
64
65 // FastLock and FastUnlockNode do not hash, we need one for each correspoding
66 // LockNode/UnLockNode to avoid creating Phi's.
67 virtual uint hash() const ; // { return NO_HASH; }
68 virtual uint cmp( const Node &n ) const ; // Always fail, except on self
69 virtual int Opcode() const;
70 virtual const Type *Value( PhaseTransform *phase ) const { return TypeInt::CC; }
71 const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;}
72
73 void create_lock_counter(JVMState* s);
74 BiasedLockingCounters* counters() const { return _counters; }
75 };
76
77
78 //------------------------------FastUnlockNode---------------------------------
79 class FastUnlockNode: public CmpNode {
80 public:
81 FastUnlockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) {
82 init_req(0,ctrl);
83 init_class_id(Class_FastUnlock);
84 }
85 Node* obj_node() const { return in(1); }
86 Node* box_node() const { return in(2); }
87
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 };