Mercurial > hg > truffle
comparison src/share/vm/memory/defNewGeneration.cpp @ 4911:d903bf750e9f
7129514: time warp warnings after 7117303
Summary: Replace calls to os::javaTimeMillis() that are used to update the milliseconds since the last GC to an equivalent that uses a monotonically non-decreasing time source.
Reviewed-by: ysr, jmasa
| author | johnc |
|---|---|
| date | Wed, 18 Jan 2012 09:50:16 -0800 |
| parents | f08d439fab8c |
| children | b632e80fc9dc |
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| 4910:caa4652b4414 | 4911:d903bf750e9f |
|---|---|
| 1 /* | 1 /* |
| 2 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved. | 2 * Copyright (c) 2001, 2012, 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. |
| 653 } | 653 } |
| 654 // set new iteration safe limit for the survivor spaces | 654 // set new iteration safe limit for the survivor spaces |
| 655 from()->set_concurrent_iteration_safe_limit(from()->top()); | 655 from()->set_concurrent_iteration_safe_limit(from()->top()); |
| 656 to()->set_concurrent_iteration_safe_limit(to()->top()); | 656 to()->set_concurrent_iteration_safe_limit(to()->top()); |
| 657 SpecializationStats::print(); | 657 SpecializationStats::print(); |
| 658 update_time_of_last_gc(os::javaTimeMillis()); | 658 |
| 659 // We need to use a monotonically non-deccreasing time in ms | |
| 660 // or we will see time-warp warnings and os::javaTimeMillis() | |
| 661 // does not guarantee monotonicity. | |
| 662 jlong now = os::javaTimeNanos() / NANOSECS_PER_MILLISEC; | |
| 663 update_time_of_last_gc(now); | |
| 659 } | 664 } |
| 660 | 665 |
| 661 class RemoveForwardPointerClosure: public ObjectClosure { | 666 class RemoveForwardPointerClosure: public ObjectClosure { |
| 662 public: | 667 public: |
| 663 void do_object(oop obj) { | 668 void do_object(oop obj) { |