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6983204: G1: Nightly test nsk/regression/b4958615 failing with +ExplicitGCInvokesConcurrent

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Enable reference discovery during concurrent marking by setting the reference processor field of the concurrent marking closure. Keep reference objects on the discovered reference lists alive during incremental evacuation pauses until they are processed at the end of concurrent marking.

Reviewed-by: ysr, tonyp
This commit is contained in:
John Cuthbertson 2010-12-01 17:34:02 -08:00
parent bb23e30511
commit 1065281a98
4 changed files with 73 additions and 29 deletions
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19
hotspot/src/share/vm/runtime/thread.hpp
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@ -78,6 +78,8 @@ class GCTaskQueue;
class ThreadClosure;
class IdealGraphPrinter;
class WorkerThread;
// Class hierarchy
// - Thread
// - NamedThread
@ -289,6 +291,10 @@ class Thread: public ThreadShadow {
virtual bool is_Watcher_thread() const { return false; }
virtual bool is_ConcurrentGC_thread() const { return false; }
virtual bool is_Named_thread() const { return false; }
virtual bool is_Worker_thread() const { return false; }
// Casts
virtual WorkerThread* as_Worker_thread() const { return NULL; }
virtual char* name() const { return (char*)"Unknown thread"; }
@ -628,9 +634,16 @@ class WorkerThread: public NamedThread {
private:
uint _id;
public:
WorkerThread() : _id(0) { }
void set_id(uint work_id) { _id = work_id; }
uint id() const { return _id; }
WorkerThread() : _id(0) { }
virtual bool is_Worker_thread() const { return true; }
virtual WorkerThread* as_Worker_thread() const {
assert(is_Worker_thread(), "Dubious cast to WorkerThread*?");
return (WorkerThread*) this;
}
void set_id(uint work_id) { _id = work_id; }
uint id() const { return _id; }
};
// A single WatcherThread is used for simulating timer interrupts.