Mercurial > hg > truffle
annotate src/share/vm/opto/locknode.hpp @ 10973:ef57c43512d6
8014431: cleanup warnings indicated by the -Wunused-value compiler option on linux
Reviewed-by: dholmes, coleenp
Contributed-by: jeremymanson@google.com, calvin.cheung@oracle.com
| author | ccheung |
|---|---|
| date | Thu, 13 Jun 2013 22:02:40 -0700 |
| parents | b9a9ed0f8eeb |
| children | d2907f74462e 606acabe7b5c |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 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 | |
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43 #ifdef TARGET_ARCH_MODEL_arm |
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44 # include "adfiles/ad_arm.hpp" |
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45 #endif |
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46 #ifdef TARGET_ARCH_MODEL_ppc |
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47 # include "adfiles/ad_ppc.hpp" |
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48 #endif |
| 1972 | 49 |
| 0 | 50 //------------------------------BoxLockNode------------------------------------ |
| 51 class BoxLockNode : public Node { | |
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52 const int _slot; // stack slot |
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53 RegMask _inmask; // OptoReg corresponding to stack slot |
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54 bool _is_eliminated; // Associated locks were safely eliminated |
| 0 | 55 |
| 4777 | 56 public: |
| 0 | 57 BoxLockNode( int lock ); |
| 58 virtual int Opcode() const; | |
| 59 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const; | |
| 60 virtual uint size(PhaseRegAlloc *ra_) const; | |
| 61 virtual const RegMask &in_RegMask(uint) const; | |
| 62 virtual const RegMask &out_RegMask() const; | |
| 63 virtual uint size_of() const; | |
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64 virtual uint hash() const; |
| 0 | 65 virtual uint cmp( const Node &n ) const; |
| 66 virtual const class Type *bottom_type() const { return TypeRawPtr::BOTTOM; } | |
| 67 virtual uint ideal_reg() const { return Op_RegP; } | |
| 68 | |
| 4777 | 69 static OptoReg::Name reg(Node* box_node); |
| 70 static BoxLockNode* box_node(Node* box_node); | |
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71 static bool same_slot(Node* box1, Node* box2) { |
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72 return box1->as_BoxLock()->_slot == box2->as_BoxLock()->_slot; |
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73 } |
| 4777 | 74 int stack_slot() const { return _slot; } |
| 0 | 75 |
| 4777 | 76 bool is_eliminated() const { return _is_eliminated; } |
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77 // mark lock as eliminated. |
| 4777 | 78 void set_eliminated() { _is_eliminated = true; } |
| 79 | |
| 80 // Is BoxLock node used for one simple lock region? | |
| 81 bool is_simple_lock_region(LockNode** unique_lock, Node* obj); | |
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82 |
| 0 | 83 #ifndef PRODUCT |
| 84 virtual void format( PhaseRegAlloc *, outputStream *st ) const; | |
| 85 virtual void dump_spec(outputStream *st) const { st->print(" Lock %d",_slot); } | |
| 86 #endif | |
| 87 }; | |
| 88 | |
| 89 //------------------------------FastLockNode----------------------------------- | |
| 90 class FastLockNode: public CmpNode { | |
| 91 private: | |
| 92 BiasedLockingCounters* _counters; | |
| 93 | |
| 94 public: | |
| 95 FastLockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) { | |
| 96 init_req(0,ctrl); | |
| 97 init_class_id(Class_FastLock); | |
| 98 _counters = NULL; | |
| 99 } | |
| 100 Node* obj_node() const { return in(1); } | |
| 101 Node* box_node() const { return in(2); } | |
| 4777 | 102 void set_box_node(Node* box) { set_req(2, box); } |
| 0 | 103 |
| 104 // FastLock and FastUnlockNode do not hash, we need one for each correspoding | |
| 105 // LockNode/UnLockNode to avoid creating Phi's. | |
| 106 virtual uint hash() const ; // { return NO_HASH; } | |
| 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 BiasedLockingCounters* counters() const { return _counters; } | |
| 114 }; | |
| 115 | |
| 116 | |
| 117 //------------------------------FastUnlockNode--------------------------------- | |
| 118 class FastUnlockNode: public CmpNode { | |
| 119 public: | |
| 120 FastUnlockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) { | |
| 121 init_req(0,ctrl); | |
| 122 init_class_id(Class_FastUnlock); | |
| 123 } | |
| 124 Node* obj_node() const { return in(1); } | |
| 125 Node* box_node() const { return in(2); } | |
| 126 | |
| 127 | |
| 128 // FastLock and FastUnlockNode do not hash, we need one for each correspoding | |
| 129 // LockNode/UnLockNode to avoid creating Phi's. | |
| 130 virtual uint hash() const ; // { return NO_HASH; } | |
| 131 virtual uint cmp( const Node &n ) const ; // Always fail, except on self | |
| 132 virtual int Opcode() const; | |
| 133 virtual const Type *Value( PhaseTransform *phase ) const { return TypeInt::CC; } | |
| 134 const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;} | |
| 135 | |
| 136 }; | |
| 1972 | 137 |
| 138 #endif // SHARE_VM_OPTO_LOCKNODE_HPP |