truffle: src/share/vm/gc_implementation/g1/satbQueue.hpp annotate

annotate src/share/vm/gc_implementation/g1/satbQueue.hpp @ 12233:40136aa2cdb1

8010722: assert: failed: heap size is too big for compressed oops Summary: Use conservative assumptions of required alignment for the various garbage collector components into account when determining the maximum heap size that supports compressed oops. Using this conservative value avoids several circular dependencies in the calculation. Reviewed-by: stefank, dholmes

author	tschatzl
date	Wed, 11 Sep 2013 16:25:02 +0200
parents	2ace1c4ee8da
children	89ac31a5a7a7

rev	line source
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1 /*
4787 2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	2 * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	4 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	7 * published by the Free Software Foundation.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	8 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	13 * accompanied this code).
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	14 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	18 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1317 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1317 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: 1317 diff changeset	21 * questions.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	22 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	23 */
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	24
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1842 diff changeset	25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_SATBQUEUE_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1842 diff changeset	26 #define SHARE_VM_GC_IMPLEMENTATION_G1_SATBQUEUE_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1842 diff changeset	27
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1842 diff changeset	28 #include "gc_implementation/g1/ptrQueue.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1842 diff changeset	29
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	30 class ObjectClosure;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	31 class JavaThread;
4787 2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	32 class SATBMarkQueueSet;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	33
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	34 // A ptrQueue whose elements are "oops", pointers to object heads.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	35 class ObjPtrQueue: public PtrQueue {
4787 2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	36 friend class SATBMarkQueueSet;
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	37
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	38 private:
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	39 // Filter out unwanted entries from the buffer.
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	40 void filter();
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	41
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	42 // Apply the closure to all elements.
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	43 void apply_closure(ObjectClosure* cl);
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	44
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	45 // Apply the closure to all elements and empty the buffer;
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	46 void apply_closure_and_empty(ObjectClosure* cl);
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	47
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	48 // Apply the closure to all elements of "buf", down to "index" (inclusive.)
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	49 static void apply_closure_to_buffer(ObjectClosure* cl,
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	50 void** buf, size_t index, size_t sz);
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	51
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	52 public:
2149 7e37af9d69ef 7011379: G1: overly long concurrent marking cycles tonyp parents: 1972 diff changeset	53 ObjPtrQueue(PtrQueueSet* qset, bool perm = false) :
1842 6e0aac35bfa9 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue tonyp parents: 1552 diff changeset	54 // SATB queues are only active during marking cycles. We create
6e0aac35bfa9 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue tonyp parents: 1552 diff changeset	55 // them with their active field set to false. If a thread is
6e0aac35bfa9 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue tonyp parents: 1552 diff changeset	56 // created during a cycle and its SATB queue needs to be activated
6e0aac35bfa9 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue tonyp parents: 1552 diff changeset	57 // before the thread starts running, we'll need to set its active
6e0aac35bfa9 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue tonyp parents: 1552 diff changeset	58 // field to true. This is done in JavaThread::initialize_queues().
2149 7e37af9d69ef 7011379: G1: overly long concurrent marking cycles tonyp parents: 1972 diff changeset	59 PtrQueue(qset, perm, false /* active */) { }
7e37af9d69ef 7011379: G1: overly long concurrent marking cycles tonyp parents: 1972 diff changeset	60
4787 2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	61 // Overrides PtrQueue::flush() so that it can filter the buffer
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	62 // before it is flushed.
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	63 virtual void flush();
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	64
2149 7e37af9d69ef 7011379: G1: overly long concurrent marking cycles tonyp parents: 1972 diff changeset	65 // Overrides PtrQueue::should_enqueue_buffer(). See the method's
7e37af9d69ef 7011379: G1: overly long concurrent marking cycles tonyp parents: 1972 diff changeset	66 // definition for more information.
7e37af9d69ef 7011379: G1: overly long concurrent marking cycles tonyp parents: 1972 diff changeset	67 virtual bool should_enqueue_buffer();
7e37af9d69ef 7011379: G1: overly long concurrent marking cycles tonyp parents: 1972 diff changeset	68
4787 2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	69 #ifndef PRODUCT
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	70 // Helpful for debugging
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	71 void print(const char* name);
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	72 static void print(const char* name, void** buf, size_t index, size_t sz);
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	73 #endif // PRODUCT
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	74
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 342 diff changeset	75 void verify_oops_in_buffer() NOT_DEBUG_RETURN;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	76 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	77
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	78 class SATBMarkQueueSet: public PtrQueueSet {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	79 ObjectClosure* _closure;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	80 ObjectClosure** _par_closures; // One per ParGCThread.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	81
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	82 ObjPtrQueue _shared_satb_queue;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	83
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	84 // Utility function to support sequential and parallel versions. If
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	85 // "par" is true, then "worker" is the par thread id; if "false", worker
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	86 // is ignored.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	87 bool apply_closure_to_completed_buffer_work(bool par, int worker);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	88
1317 d4197f8d516a 6935821: G1: threads created during marking do not active their SATB queues tonyp parents: 1111 diff changeset	89 #ifdef ASSERT
d4197f8d516a 6935821: G1: threads created during marking do not active their SATB queues tonyp parents: 1111 diff changeset	90 void dump_active_values(JavaThread* first, bool expected_active);
d4197f8d516a 6935821: G1: threads created during marking do not active their SATB queues tonyp parents: 1111 diff changeset	91 #endif // ASSERT
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	92
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	93 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	94 SATBMarkQueueSet();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	95
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	96 void initialize(Monitor* cbl_mon, Mutex* fl_lock,
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 845 diff changeset	97 int process_completed_threshold,
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 845 diff changeset	98 Mutex* lock);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	99
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	100 static void handle_zero_index_for_thread(JavaThread* t);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	101
1317 d4197f8d516a 6935821: G1: threads created during marking do not active their SATB queues tonyp parents: 1111 diff changeset	102 // Apply "set_active(b)" to all Java threads' SATB queues. It should be
d4197f8d516a 6935821: G1: threads created during marking do not active their SATB queues tonyp parents: 1111 diff changeset	103 // called only with the world stopped. The method will assert that the
d4197f8d516a 6935821: G1: threads created during marking do not active their SATB queues tonyp parents: 1111 diff changeset	104 // SATB queues of all threads it visits, as well as the SATB queue
d4197f8d516a 6935821: G1: threads created during marking do not active their SATB queues tonyp parents: 1111 diff changeset	105 // set itself, has an active value same as expected_active.
d4197f8d516a 6935821: G1: threads created during marking do not active their SATB queues tonyp parents: 1111 diff changeset	106 void set_active_all_threads(bool b, bool expected_active);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	107
4787 2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	108 // Filter all the currently-active SATB buffers.
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	109 void filter_thread_buffers();
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	110
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	111 // Register "blk" as "the closure" for all queues. Only one such closure
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	112 // is allowed. The "apply_closure_to_completed_buffer" method will apply
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	113 // this closure to a completed buffer, and "iterate_closure_all_threads"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	114 // applies it to partially-filled buffers (the latter should only be done
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	115 // with the world stopped).
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	116 void set_closure(ObjectClosure* closure);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	117 // Set the parallel closures: pointer is an array of pointers to
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	118 // closures, one for each parallel GC thread.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	119 void set_par_closure(int i, ObjectClosure* closure);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	120
4787 2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	121 // Apply the registered closure to all entries on each
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	122 // currently-active buffer and then empty the buffer. It should only
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	123 // be called serially and at a safepoint.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	124 void iterate_closure_all_threads();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	125 // Parallel version of the above.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	126 void par_iterate_closure_all_threads(int worker);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	127
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	128 // If there exists some completed buffer, pop it, then apply the
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	129 // registered closure to all its elements, and return true. If no
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	130 // completed buffers exist, return false.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	131 bool apply_closure_to_completed_buffer() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	132 return apply_closure_to_completed_buffer_work(false, 0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	133 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	134 // Parallel version of the above.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	135 bool par_apply_closure_to_completed_buffer(int worker) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	136 return apply_closure_to_completed_buffer_work(true, worker);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	137 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	138
4787 2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	139 // Apply the given closure on enqueued and currently-active buffers
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	140 // respectively. Both methods are read-only, i.e., they do not
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	141 // modify any of the buffers.
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	142 void iterate_completed_buffers_read_only(ObjectClosure* cl);
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	143 void iterate_thread_buffers_read_only(ObjectClosure* cl);
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	144
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	145 #ifndef PRODUCT
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	146 // Helpful for debugging
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	147 void print_all(const char* msg);
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	148 #endif // PRODUCT
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 2149 diff changeset	149
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	150 ObjPtrQueue* shared_satb_queue() { return &_shared_satb_queue; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	151
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	152 // If a marking is being abandoned, reset any unprocessed log buffers.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	153 void abandon_partial_marking();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	154 };
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1842 diff changeset	155
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1842 diff changeset	156 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_SATBQUEUE_HPP

Mercurial > hg > truffle

annotate src/share/vm/gc_implementation/g1/satbQueue.hpp @ 12233:40136aa2cdb1