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comparison src/share/vm/gc_implementation/parNew/parNewGeneration.hpp @ 1665:a93a9eda13f7

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6962947: shared TaskQueue statistics Reviewed-by: tonyp, ysr
author jcoomes
date Fri, 16 Jul 2010 21:33:21 -0700
parents c18cbe5936b8
children 94251661de76
comparison
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1657:1a1ce2076047 1665:a93a9eda13f7
1 /* 1 /*
2 * Copyright (c) 2001, 2009, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
31 31
32 // It would be better if these types could be kept local to the .cpp file, 32 // It would be better if these types could be kept local to the .cpp file,
33 // but they must be here to allow ParScanClosure::do_oop_work to be defined 33 // but they must be here to allow ParScanClosure::do_oop_work to be defined
34 // in genOopClosures.inline.hpp. 34 // in genOopClosures.inline.hpp.
35 35
36 typedef OopTaskQueue ObjToScanQueue; 36 typedef Padded<OopTaskQueue> ObjToScanQueue;
37 typedef OopTaskQueueSet ObjToScanQueueSet; 37 typedef GenericTaskQueueSet<ObjToScanQueue> ObjToScanQueueSet;
38 38
39 // Enable this to get push/pop/steal stats. 39 // Enable this to get push/pop/steal stats.
40 const int PAR_STATS_ENABLED = 0; 40 const int PAR_STATS_ENABLED = 0;
41 41
42 class ParKeepAliveClosure: public DefNewGeneration::KeepAliveClosure { 42 class ParKeepAliveClosure: public DefNewGeneration::KeepAliveClosure {
302 friend class ParNewRefProcTaskExecutor; 302 friend class ParNewRefProcTaskExecutor;
303 friend class ParScanThreadStateSet; 303 friend class ParScanThreadStateSet;
304 friend class ParEvacuateFollowersClosure; 304 friend class ParEvacuateFollowersClosure;
305 305
306 private: 306 private:
307 // XXX use a global constant instead of 64!
308 struct ObjToScanQueuePadded {
309 ObjToScanQueue work_queue;
310 char pad[64 - sizeof(ObjToScanQueue)]; // prevent false sharing
311 };
312
313 // The per-worker-thread work queues 307 // The per-worker-thread work queues
314 ObjToScanQueueSet* _task_queues; 308 ObjToScanQueueSet* _task_queues;
315 309
316 // Per-worker-thread local overflow stacks 310 // Per-worker-thread local overflow stacks
317 GrowableArray<oop>** _overflow_stacks; 311 GrowableArray<oop>** _overflow_stacks;