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6841831: G1: assert(contains_reference(from),"We just added it!") fires

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During parallel rset updating we have to make sure that the worker ids of the refinement threads do not intersect with the worker ids that can be claimed by the mutator threads.

Reviewed-by: tonyp
This commit is contained in:
Igor Veresov 2009-05-18 11:52:46 -07:00
parent 8c764e214c
commit 4f6c7e4a14
7 changed files with 26 additions and 13 deletions
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6
hotspot/src/share/vm/gc_implementation/g1/concurrentG1RefineThread.cpp
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@ -30,8 +30,10 @@
// The CM thread is created when the G1 garbage collector is used
ConcurrentG1RefineThread::
ConcurrentG1RefineThread(ConcurrentG1Refine* cg1r, ConcurrentG1RefineThread *next, int worker_id) :
ConcurrentG1RefineThread(ConcurrentG1Refine* cg1r, ConcurrentG1RefineThread *next,
int worker_id_offset, int worker_id) :
ConcurrentGCThread(),
_worker_id_offset(worker_id_offset),
_worker_id(worker_id),
_active(false),
_next(next),
@ -114,7 +116,7 @@ void ConcurrentG1RefineThread::run() {
} else {
lower_limit = DCQBarrierProcessCompletedThreshold / 4; // For now.
}
while (dcqs.apply_closure_to_completed_buffer(_worker_id, lower_limit)) {
while (dcqs.apply_closure_to_completed_buffer(_worker_id + _worker_id_offset, lower_limit)) {
double end_vtime_sec;
double elapsed_vtime_sec;
int elapsed_vtime_ms;