Mercurial > hg > graal-compiler

comparison src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp @ 4911:d903bf750e9f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
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 be649fefcdc2
children b632e80fc9dc
comparison
equal deleted inserted replaced
4910:caa4652b4414 4911:d903bf750e9f
6090 _intra_sweep_estimate.sample(_intra_sweep_timer.seconds()); 6090 _intra_sweep_estimate.sample(_intra_sweep_timer.seconds());
6091 6091
6092 _inter_sweep_timer.reset(); 6092 _inter_sweep_timer.reset();
6093 _inter_sweep_timer.start(); 6093 _inter_sweep_timer.start();
6094 6094
6095 update_time_of_last_gc(os::javaTimeMillis()); 6095 // We need to use a monotonically non-deccreasing time in ms
6096 // or we will see time-warp warnings and os::javaTimeMillis()
6097 // does not guarantee monotonicity.
6098 jlong now = os::javaTimeNanos() / NANOSECS_PER_MILLISEC;
6099 update_time_of_last_gc(now);
6096 6100
6097 // NOTE on abstract state transitions: 6101 // NOTE on abstract state transitions:
6098 // Mutators allocate-live and/or mark the mod-union table dirty 6102 // Mutators allocate-live and/or mark the mod-union table dirty
6099 // based on the state of the collection. The former is done in 6103 // based on the state of the collection. The former is done in
6100 // the interval [Marking, Sweeping] and the latter in the interval 6104 // the interval [Marking, Sweeping] and the latter in the interval