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1 /*
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2 * Copyright 1999-2006 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 //------------------------------BoxLockNode------------------------------------
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26 class BoxLockNode : public Node {
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27 public:
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28 const int _slot;
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29 RegMask _inmask;
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30
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31 BoxLockNode( int lock );
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32 virtual int Opcode() const;
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33 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const;
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34 virtual uint size(PhaseRegAlloc *ra_) const;
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35 virtual const RegMask &in_RegMask(uint) const;
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36 virtual const RegMask &out_RegMask() const;
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37 virtual uint size_of() const;
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38 virtual uint hash() const { return Node::hash() + _slot; }
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39 virtual uint cmp( const Node &n ) const;
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40 virtual const class Type *bottom_type() const { return TypeRawPtr::BOTTOM; }
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41 virtual uint ideal_reg() const { return Op_RegP; }
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42
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43 static OptoReg::Name stack_slot(Node* box_node);
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44
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45 #ifndef PRODUCT
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46 virtual void format( PhaseRegAlloc *, outputStream *st ) const;
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47 virtual void dump_spec(outputStream *st) const { st->print(" Lock %d",_slot); }
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48 #endif
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49 };
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50
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51 //------------------------------FastLockNode-----------------------------------
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52 class FastLockNode: public CmpNode {
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53 private:
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54 BiasedLockingCounters* _counters;
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55
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56 public:
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57 FastLockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) {
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58 init_req(0,ctrl);
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59 init_class_id(Class_FastLock);
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60 _counters = NULL;
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61 }
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62 Node* obj_node() const { return in(1); }
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63 Node* box_node() const { return in(2); }
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64
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65 // FastLock and FastUnlockNode do not hash, we need one for each correspoding
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66 // LockNode/UnLockNode to avoid creating Phi's.
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67 virtual uint hash() const ; // { return NO_HASH; }
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68 virtual uint cmp( const Node &n ) const ; // Always fail, except on self
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69 virtual int Opcode() const;
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70 virtual const Type *Value( PhaseTransform *phase ) const { return TypeInt::CC; }
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71 const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;}
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72
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73 void create_lock_counter(JVMState* s);
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74 BiasedLockingCounters* counters() const { return _counters; }
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75 };
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76
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77
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78 //------------------------------FastUnlockNode---------------------------------
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79 class FastUnlockNode: public CmpNode {
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80 public:
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81 FastUnlockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) {
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82 init_req(0,ctrl);
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83 init_class_id(Class_FastUnlock);
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84 }
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85 Node* obj_node() const { return in(1); }
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86 Node* box_node() const { return in(2); }
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87
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88
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89 // FastLock and FastUnlockNode do not hash, we need one for each correspoding
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90 // LockNode/UnLockNode to avoid creating Phi's.
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91 virtual uint hash() const ; // { return NO_HASH; }
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92 virtual uint cmp( const Node &n ) const ; // Always fail, except on self
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93 virtual int Opcode() const;
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94 virtual const Type *Value( PhaseTransform *phase ) const { return TypeInt::CC; }
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95 const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;}
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96
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97 };
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