Mercurial > hg > truffle
annotate src/share/vm/opto/locknode.hpp @ 1721:413ad0331a0c
6977924: Changes for 6975078 produce build error with certain gcc versions
Summary: The changes introduced for 6975078 assign badHeapOopVal to the _allocation field in the ResourceObj class. In 32 bit linux builds with certain versions of gcc this assignment will be flagged as an error while compiling allocation.cpp. In 32 bit builds the constant value badHeapOopVal (which is cast to an intptr_t) is negative. The _allocation field is typed as an unsigned intptr_t and gcc catches this as an error.
Reviewed-by: jcoomes, ysr, phh
| author | johnc |
|---|---|
| date | Wed, 18 Aug 2010 10:59:06 -0700 |
| parents | c18cbe5936b8 |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1999, 2008, 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 | |
| 25 //------------------------------BoxLockNode------------------------------------ | |
| 26 class BoxLockNode : public Node { | |
| 27 public: | |
| 28 const int _slot; | |
| 29 RegMask _inmask; | |
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30 bool _is_eliminated; // indicates this lock was safely eliminated |
| 0 | 31 |
| 32 BoxLockNode( int lock ); | |
| 33 virtual int Opcode() const; | |
| 34 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const; | |
| 35 virtual uint size(PhaseRegAlloc *ra_) const; | |
| 36 virtual const RegMask &in_RegMask(uint) const; | |
| 37 virtual const RegMask &out_RegMask() const; | |
| 38 virtual uint size_of() const; | |
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39 virtual uint hash() const; |
| 0 | 40 virtual uint cmp( const Node &n ) const; |
| 41 virtual const class Type *bottom_type() const { return TypeRawPtr::BOTTOM; } | |
| 42 virtual uint ideal_reg() const { return Op_RegP; } | |
| 43 | |
| 44 static OptoReg::Name stack_slot(Node* box_node); | |
| 45 | |
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46 bool is_eliminated() { return _is_eliminated; } |
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47 // mark lock as eliminated. |
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48 void set_eliminated() { _is_eliminated = true; } |
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49 |
| 0 | 50 #ifndef PRODUCT |
| 51 virtual void format( PhaseRegAlloc *, outputStream *st ) const; | |
| 52 virtual void dump_spec(outputStream *st) const { st->print(" Lock %d",_slot); } | |
| 53 #endif | |
| 54 }; | |
| 55 | |
| 56 //------------------------------FastLockNode----------------------------------- | |
| 57 class FastLockNode: public CmpNode { | |
| 58 private: | |
| 59 BiasedLockingCounters* _counters; | |
| 60 | |
| 61 public: | |
| 62 FastLockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) { | |
| 63 init_req(0,ctrl); | |
| 64 init_class_id(Class_FastLock); | |
| 65 _counters = NULL; | |
| 66 } | |
| 67 Node* obj_node() const { return in(1); } | |
| 68 Node* box_node() const { return in(2); } | |
| 69 | |
| 70 // FastLock and FastUnlockNode do not hash, we need one for each correspoding | |
| 71 // LockNode/UnLockNode to avoid creating Phi's. | |
| 72 virtual uint hash() const ; // { return NO_HASH; } | |
| 73 virtual uint cmp( const Node &n ) const ; // Always fail, except on self | |
| 74 virtual int Opcode() const; | |
| 75 virtual const Type *Value( PhaseTransform *phase ) const { return TypeInt::CC; } | |
| 76 const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;} | |
| 77 | |
| 78 void create_lock_counter(JVMState* s); | |
| 79 BiasedLockingCounters* counters() const { return _counters; } | |
| 80 }; | |
| 81 | |
| 82 | |
| 83 //------------------------------FastUnlockNode--------------------------------- | |
| 84 class FastUnlockNode: public CmpNode { | |
| 85 public: | |
| 86 FastUnlockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) { | |
| 87 init_req(0,ctrl); | |
| 88 init_class_id(Class_FastUnlock); | |
| 89 } | |
| 90 Node* obj_node() const { return in(1); } | |
| 91 Node* box_node() const { return in(2); } | |
| 92 | |
| 93 | |
| 94 // FastLock and FastUnlockNode do not hash, we need one for each correspoding | |
| 95 // LockNode/UnLockNode to avoid creating Phi's. | |
| 96 virtual uint hash() const ; // { return NO_HASH; } | |
| 97 virtual uint cmp( const Node &n ) const ; // Always fail, except on self | |
| 98 virtual int Opcode() const; | |
| 99 virtual const Type *Value( PhaseTransform *phase ) const { return TypeInt::CC; } | |
| 100 const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;} | |
| 101 | |
| 102 }; |