Mon, 12 Mar 2012 14:59:00 -0700
7147724: G1: hang in SurrogateLockerThread::manipulatePLL
Summary: Attempting to initiate a marking cycle when allocating a humongous object can, if a marking cycle is successfully initiated by another thread, result in the allocating thread spinning until the marking cycle is complete. Eliminate a deadlock between the main ConcurrentMarkThread, the SurrogateLocker thread, the VM thread, and a mutator thread waiting on the SecondaryFreeList_lock (while free regions are going to become available) by not manipulating the pending list lock during the prologue and epilogue of the cleanup pause.
Reviewed-by: brutisso, jcoomes, tonyp
1 /*
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25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1_SPECIALIZED_OOP_CLOSURES_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1_SPECIALIZED_OOP_CLOSURES_HPP
28 // The following OopClosure types get specialized versions of
29 // "oop_oop_iterate" that invoke the closures' do_oop methods
30 // non-virtually, using a mechanism defined in this file. Extend these
31 // macros in the obvious way to add specializations for new closures.
33 // Forward declarations.
34 enum G1Barrier {
35 G1BarrierNone,
36 G1BarrierRS,
37 G1BarrierEvac
38 };
40 template<bool do_gen_barrier, G1Barrier barrier, bool do_mark_object>
41 class G1ParCopyClosure;
43 class G1ParScanClosure;
44 class G1ParPushHeapRSClosure;
46 typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacClosure;
48 class FilterIntoCSClosure;
49 class FilterOutOfRegionClosure;
50 class G1CMOopClosure;
51 class G1RootRegionScanClosure;
53 // Specialized oop closures from g1RemSet.cpp
54 class G1Mux2Closure;
55 class G1TriggerClosure;
56 class G1InvokeIfNotTriggeredClosure;
57 class G1UpdateRSOrPushRefOopClosure;
59 #ifdef FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES
60 #error "FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES already defined."
61 #endif
63 #define FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES(f) \
64 f(G1ParScanHeapEvacClosure,_nv) \
65 f(G1ParScanClosure,_nv) \
66 f(G1ParPushHeapRSClosure,_nv) \
67 f(FilterIntoCSClosure,_nv) \
68 f(FilterOutOfRegionClosure,_nv) \
69 f(G1CMOopClosure,_nv) \
70 f(G1RootRegionScanClosure,_nv) \
71 f(G1Mux2Closure,_nv) \
72 f(G1TriggerClosure,_nv) \
73 f(G1InvokeIfNotTriggeredClosure,_nv) \
74 f(G1UpdateRSOrPushRefOopClosure,_nv)
76 #ifdef FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES
77 #error "FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES already defined."
78 #endif
80 #define FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES(f)
82 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1_SPECIALIZED_OOP_CLOSURES_HPP