Mercurial > hg > truffle
annotate src/share/vm/opto/locknode.cpp @ 196:d1605aabd0a1 jdk7-b30
6719955: Update copyright year
Summary: Update copyright year for files that have been modified in 2008
Reviewed-by: ohair, tbell
| author | xdono |
|---|---|
| date | Wed, 02 Jul 2008 12:55:16 -0700 |
| parents | 6dbf1a175d6b |
| children | 424f9bfe6b96 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 196 | 2 * Copyright 1999-2008 Sun Microsystems, Inc. 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 * | |
| 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 #include "incls/_precompiled.incl" | |
| 26 #include "incls/_locknode.cpp.incl" | |
| 27 | |
| 28 //============================================================================= | |
| 29 const RegMask &BoxLockNode::in_RegMask(uint i) const { | |
| 30 return _inmask; | |
| 31 } | |
| 32 | |
| 33 const RegMask &BoxLockNode::out_RegMask() const { | |
| 34 return *Matcher::idealreg2regmask[Op_RegP]; | |
| 35 } | |
| 36 | |
| 37 uint BoxLockNode::size_of() const { return sizeof(*this); } | |
| 38 | |
|
66
6dbf1a175d6b
6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents:
0
diff
changeset
|
39 BoxLockNode::BoxLockNode( int slot ) : Node( Compile::current()->root() ), |
|
6dbf1a175d6b
6672848: (Escape Analysis) improve lock elimination with EA
kvn
parents:
0
diff
changeset
|
40 _slot(slot), _is_eliminated(false) { |
| 0 | 41 init_class_id(Class_BoxLock); |
| 42 init_flags(Flag_rematerialize); | |
| 43 OptoReg::Name reg = OptoReg::stack2reg(_slot); | |
| 44 _inmask.Insert(reg); | |
| 45 } | |
| 46 | |
| 47 //------------------------------cmp-------------------------------------------- | |
| 48 uint BoxLockNode::cmp( const Node &n ) const { | |
| 49 const BoxLockNode &bn = (const BoxLockNode &)n; | |
| 50 return bn._slot == _slot; | |
| 51 } | |
| 52 | |
| 53 OptoReg::Name BoxLockNode::stack_slot(Node* box_node) { | |
| 54 // Chase down the BoxNode | |
| 55 while (!box_node->is_BoxLock()) { | |
| 56 // if (box_node->is_SpillCopy()) { | |
| 57 // Node *m = box_node->in(1); | |
| 58 // if (m->is_Mach() && m->as_Mach()->ideal_Opcode() == Op_StoreP) { | |
| 59 // box_node = m->in(m->as_Mach()->operand_index(2)); | |
| 60 // continue; | |
| 61 // } | |
| 62 // } | |
| 63 assert(box_node->is_SpillCopy() || box_node->is_Phi(), "Bad spill of Lock."); | |
| 64 box_node = box_node->in(1); | |
| 65 } | |
| 66 return box_node->in_RegMask(0).find_first_elem(); | |
| 67 } | |
| 68 | |
| 69 //============================================================================= | |
| 70 //-----------------------------hash-------------------------------------------- | |
| 71 uint FastLockNode::hash() const { return NO_HASH; } | |
| 72 | |
| 73 //------------------------------cmp-------------------------------------------- | |
| 74 uint FastLockNode::cmp( const Node &n ) const { | |
| 75 return (&n == this); // Always fail except on self | |
| 76 } | |
| 77 | |
| 78 //============================================================================= | |
| 79 //-----------------------------hash-------------------------------------------- | |
| 80 uint FastUnlockNode::hash() const { return NO_HASH; } | |
| 81 | |
| 82 //------------------------------cmp-------------------------------------------- | |
| 83 uint FastUnlockNode::cmp( const Node &n ) const { | |
| 84 return (&n == this); // Always fail except on self | |
| 85 } | |
| 86 | |
| 87 // | |
| 88 // Create a counter which counts the number of times this lock is acquired | |
| 89 // | |
| 90 void FastLockNode::create_lock_counter(JVMState* state) { | |
| 91 BiasedLockingNamedCounter* blnc = (BiasedLockingNamedCounter*) | |
| 92 OptoRuntime::new_named_counter(state, NamedCounter::BiasedLockingCounter); | |
| 93 _counters = blnc->counters(); | |
| 94 } | |
| 95 | |
| 96 //============================================================================= | |
| 97 //------------------------------do_monitor_enter------------------------------- | |
| 98 void Parse::do_monitor_enter() { | |
| 99 kill_dead_locals(); | |
| 100 | |
| 101 // Null check; get casted pointer. | |
| 102 Node *obj = do_null_check(peek(), T_OBJECT); | |
| 103 // Check for locking null object | |
| 104 if (stopped()) return; | |
| 105 | |
| 106 // the monitor object is not part of debug info expression stack | |
| 107 pop(); | |
| 108 | |
| 109 // Insert a FastLockNode which takes as arguments the current thread pointer, | |
| 110 // the obj pointer & the address of the stack slot pair used for the lock. | |
| 111 shared_lock(obj); | |
| 112 } | |
| 113 | |
| 114 //------------------------------do_monitor_exit-------------------------------- | |
| 115 void Parse::do_monitor_exit() { | |
| 116 kill_dead_locals(); | |
| 117 | |
| 118 pop(); // Pop oop to unlock | |
| 119 // Because monitors are guarenteed paired (else we bail out), we know | |
| 120 // the matching Lock for this Unlock. Hence we know there is no need | |
| 121 // for a null check on Unlock. | |
| 122 shared_unlock(map()->peek_monitor_box(), map()->peek_monitor_obj()); | |
| 123 } |