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8248401: Refactor/unify RMI gc support functionality

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Move recent timestamp of most recent whole heap liveness analysis into CollectedHeap, removing the duplicates in all collectors

Reviewed-by: kbarrett, ayang, stefank
This commit is contained in:
Thomas Schatzl 2020-08-07 19:23:53 +02:00
parent 1ad1659413
commit 9852a6f75c
25 changed files with 56 additions and 166 deletions
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24
src/hotspot/share/gc/parallel/psParallelCompact.cpp
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@ -843,7 +843,6 @@ ParallelOldTracer PSParallelCompact::_gc_tracer;
elapsedTimer PSParallelCompact::_accumulated_time;
unsigned int PSParallelCompact::_total_invocations = 0;
unsigned int PSParallelCompact::_maximum_compaction_gc_num = 0;
jlong PSParallelCompact::_time_of_last_gc = 0;
CollectorCounters* PSParallelCompact::_counters = NULL;
ParMarkBitMap PSParallelCompact::_mark_bitmap;
ParallelCompactData PSParallelCompact::_summary_data;
@ -1070,8 +1069,8 @@ void PSParallelCompact::post_compact()
heap->gen_mangle_unused_area();
}
// Update time of last GC
reset_millis_since_last_gc();
// Signal that we have completed a visit to all live objects.
Universe::heap()->record_whole_heap_examined_timestamp();
}
HeapWord*
@ -3192,25 +3191,6 @@ void PSParallelCompact::fill_blocks(size_t region_idx)
}
}
jlong PSParallelCompact::millis_since_last_gc() {
// We need a monotonically non-decreasing time in ms but
// os::javaTimeMillis() does not guarantee monotonicity.
jlong now = os::javaTimeNanos() / NANOSECS_PER_MILLISEC;
jlong ret_val = now - _time_of_last_gc;
// XXX See note in genCollectedHeap::millis_since_last_gc().
if (ret_val < 0) {
NOT_PRODUCT(log_warning(gc)("time warp: " JLONG_FORMAT, ret_val);)
return 0;
}
return ret_val;
}
void PSParallelCompact::reset_millis_since_last_gc() {
// We need a monotonically non-decreasing time in ms but
// os::javaTimeMillis() does not guarantee monotonicity.
_time_of_last_gc = os::javaTimeNanos() / NANOSECS_PER_MILLISEC;
}
ParMarkBitMap::IterationStatus MoveAndUpdateClosure::copy_until_full()
{
if (source() != copy_destination()) {