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comparison src/share/vm/gc_implementation/parNew/parNewGeneration.cpp @ 4911:d903bf750e9f

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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 441e946dc1af
children 9d679effd28c
comparison
equal deleted inserted replaced
4910:caa4652b4414 4911:d903bf750e9f
1 /* 1 /*
2 * Copyright (c) 2001, 2011, 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.
1040 if (UseAdaptiveSizePolicy) { 1040 if (UseAdaptiveSizePolicy) {
1041 size_policy->minor_collection_end(gch->gc_cause()); 1041 size_policy->minor_collection_end(gch->gc_cause());
1042 size_policy->avg_survived()->sample(from()->used()); 1042 size_policy->avg_survived()->sample(from()->used());
1043 } 1043 }
1044 1044
1045 update_time_of_last_gc(os::javaTimeMillis()); 1045 // We need to use a monotonically non-deccreasing time in ms
1046 // or we will see time-warp warnings and os::javaTimeMillis()
1047 // does not guarantee monotonicity.
1048 jlong now = os::javaTimeNanos() / NANOSECS_PER_MILLISEC;
1049 update_time_of_last_gc(now);
1046 1050
1047 SpecializationStats::print(); 1051 SpecializationStats::print();
1048 1052
1049 rp->set_enqueuing_is_done(true); 1053 rp->set_enqueuing_is_done(true);
1050 if (rp->processing_is_mt()) { 1054 if (rp->processing_is_mt()) {