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6863023: need non-perm oops in code cache for JSR 292

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Make a special root-list for those few nmethods which might contain non-perm oops.

Reviewed-by: twisti, kvn, never, jmasa, ysr
This commit is contained in:
John R Rose 2009-09-15 21:53:47 -07:00
parent 1cf5b7ae11
commit e261aecad8
74 changed files with 979 additions and 279 deletions
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11
hotspot/src/share/vm/gc_implementation/g1/concurrentMark.cpp
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@ -747,10 +747,11 @@ void ConcurrentMark::checkpointRootsInitialPre() {
// clear the mark bitmap (no grey objects to start with)
_nextMarkBitMap->clearAll();
PrintReachableClosure prcl(_nextMarkBitMap);
g1h->process_strong_roots(
g1h->process_strong_roots(true, // activate StrongRootsScope
false, // fake perm gen collection
SharedHeap::SO_AllClasses,
&prcl, // Regular roots
NULL, // do not visit active blobs
&prcl // Perm Gen Roots
);
// The root iteration above "consumed" dirty cards in the perm gen.
@ -866,9 +867,11 @@ void ConcurrentMark::checkpointRootsInitial() {
g1h->set_marking_started();
g1h->rem_set()->prepare_for_younger_refs_iterate(false);
g1h->process_strong_roots(false, // fake perm gen collection
g1h->process_strong_roots(true, // activate StrongRootsScope
false, // fake perm gen collection
SharedHeap::SO_AllClasses,
&notOlder, // Regular roots
NULL, // do not visit active blobs
&older // Perm Gen Roots
);
checkpointRootsInitialPost();
@ -1963,7 +1966,7 @@ void ConcurrentMark::checkpointRootsFinalWork() {
g1h->ensure_parsability(false);
if (ParallelGCThreads > 0) {
g1h->change_strong_roots_parity();
G1CollectedHeap::StrongRootsScope srs(g1h);
// this is remark, so we'll use up all available threads
int active_workers = ParallelGCThreads;
set_phase(active_workers, false);
@ -1980,7 +1983,7 @@ void ConcurrentMark::checkpointRootsFinalWork() {
SATBMarkQueueSet& satb_mq_set = JavaThread::satb_mark_queue_set();
guarantee( satb_mq_set.completed_buffers_num() == 0, "invariant" );
} else {
g1h->change_strong_roots_parity();
G1CollectedHeap::StrongRootsScope srs(g1h);
// this is remark, so we'll use up all available threads
int active_workers = 1;
set_phase(active_workers, false);