Mercurial > hg > graal-compiler
annotate src/share/vm/opto/locknode.hpp @ 3992:d1bdeef3e3e2
7098282: G1: assert(interval >= 0) failed: Sanity check, referencePolicy.cpp: 76
Summary: There is a race between one thread successfully forwarding and copying the klass mirror for the SoftReference class (including the static master clock) and another thread attempting to use the master clock while attempting to discover a soft reference object. Maintain a shadow copy of the soft reference master clock and use the shadow during reference discovery and reference processing.
Reviewed-by: tonyp, brutisso, ysr
| author | johnc |
|---|---|
| date | Wed, 12 Oct 2011 10:25:51 -0700 |
| parents | 1d1603768966 |
| children | e9a5e0a812c8 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
2426
1d1603768966
7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass
trims
parents:
2192
diff
changeset
|
2 * Copyright (c) 1999, 2011, 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 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
460
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
460
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
460
diff
changeset
|
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 | |
|
2192
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
43 #ifdef TARGET_ARCH_MODEL_arm |
|
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
44 # include "adfiles/ad_arm.hpp" |
|
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
45 #endif |
|
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
46 #ifdef TARGET_ARCH_MODEL_ppc |
|
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
47 # include "adfiles/ad_ppc.hpp" |
|
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
48 #endif |
| 1972 | 49 |
| 0 | 50 //------------------------------BoxLockNode------------------------------------ |
| 51 class BoxLockNode : public Node { | |
| 52 public: | |
| 53 const int _slot; | |
| 54 RegMask _inmask; | |
|
66
6dbf1a175d6b
6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents:
0
diff
changeset
|
55 bool _is_eliminated; // indicates this lock was safely eliminated |
| 0 | 56 |
| 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; | |
|
460
424f9bfe6b96
6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
kvn
parents:
196
diff
changeset
|
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 | |
| 69 static OptoReg::Name stack_slot(Node* box_node); | |
| 70 | |
|
66
6dbf1a175d6b
6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents:
0
diff
changeset
|
71 bool is_eliminated() { return _is_eliminated; } |
|
6dbf1a175d6b
6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents:
0
diff
changeset
|
72 // mark lock as eliminated. |
|
6dbf1a175d6b
6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents:
0
diff
changeset
|
73 void set_eliminated() { _is_eliminated = true; } |
|
6dbf1a175d6b
6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents:
0
diff
changeset
|
74 |
| 0 | 75 #ifndef PRODUCT |
| 76 virtual void format( PhaseRegAlloc *, outputStream *st ) const; | |
| 77 virtual void dump_spec(outputStream *st) const { st->print(" Lock %d",_slot); } | |
| 78 #endif | |
| 79 }; | |
| 80 | |
| 81 //------------------------------FastLockNode----------------------------------- | |
| 82 class FastLockNode: public CmpNode { | |
| 83 private: | |
| 84 BiasedLockingCounters* _counters; | |
| 85 | |
| 86 public: | |
| 87 FastLockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) { | |
| 88 init_req(0,ctrl); | |
| 89 init_class_id(Class_FastLock); | |
| 90 _counters = NULL; | |
| 91 } | |
| 92 Node* obj_node() const { return in(1); } | |
| 93 Node* box_node() const { return in(2); } | |
| 94 | |
| 95 // FastLock and FastUnlockNode do not hash, we need one for each correspoding | |
| 96 // LockNode/UnLockNode to avoid creating Phi's. | |
| 97 virtual uint hash() const ; // { return NO_HASH; } | |
| 98 virtual uint cmp( const Node &n ) const ; // Always fail, except on self | |
| 99 virtual int Opcode() const; | |
| 100 virtual const Type *Value( PhaseTransform *phase ) const { return TypeInt::CC; } | |
| 101 const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;} | |
| 102 | |
| 103 void create_lock_counter(JVMState* s); | |
| 104 BiasedLockingCounters* counters() const { return _counters; } | |
| 105 }; | |
| 106 | |
| 107 | |
| 108 //------------------------------FastUnlockNode--------------------------------- | |
| 109 class FastUnlockNode: public CmpNode { | |
| 110 public: | |
| 111 FastUnlockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) { | |
| 112 init_req(0,ctrl); | |
| 113 init_class_id(Class_FastUnlock); | |
| 114 } | |
| 115 Node* obj_node() const { return in(1); } | |
| 116 Node* box_node() const { return in(2); } | |
| 117 | |
| 118 | |
| 119 // FastLock and FastUnlockNode do not hash, we need one for each correspoding | |
| 120 // LockNode/UnLockNode to avoid creating Phi's. | |
| 121 virtual uint hash() const ; // { return NO_HASH; } | |
| 122 virtual uint cmp( const Node &n ) const ; // Always fail, except on self | |
| 123 virtual int Opcode() const; | |
| 124 virtual const Type *Value( PhaseTransform *phase ) const { return TypeInt::CC; } | |
| 125 const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;} | |
| 126 | |
| 127 }; | |
| 1972 | 128 |
| 129 #endif // SHARE_VM_OPTO_LOCKNODE_HPP |