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comparison src/share/vm/gc_implementation/g1/vm_operations_g1.hpp @ 4022:db89aa49298f

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7099824: G1: we should take the pending list lock before doing the remark pause Summary: Acquire the pending list lock in the prologue method of G1's concurrent VM_Operation and release the lock in the epilogue() method. The locking/unlocking order of the pending list lock and the Heap_lock should match that in the prologue and epilogue methods of VM_GC_Operation. Reviewed-by: tonyp, ysr
author johnc
date Thu, 20 Oct 2011 12:06:20 -0700
parents c798c277ddd1
children 64bf7c8270cb
comparison
equal deleted inserted replaced
4021:8d161913dfc3 4022:db89aa49298f
91 virtual const char* name() const { 91 virtual const char* name() const {
92 return "garbage-first incremental collection pause"; 92 return "garbage-first incremental collection pause";
93 } 93 }
94 }; 94 };
95 95
96 // Concurrent GC stop-the-world operations such as initial and final mark; 96 // Concurrent GC stop-the-world operations such as remark and cleanup;
97 // consider sharing these with CMS's counterparts. 97 // consider sharing these with CMS's counterparts.
98 class VM_CGC_Operation: public VM_Operation { 98 class VM_CGC_Operation: public VM_Operation {
99 VoidClosure* _cl; 99 VoidClosure* _cl;
100 const char* _printGCMessage; 100 const char* _printGCMessage;
101
102 protected:
103 // java.lang.ref.Reference support
104 void acquire_pending_list_lock();
105 void release_and_notify_pending_list_lock();
106
101 public: 107 public:
102 VM_CGC_Operation(VoidClosure* cl, const char *printGCMsg) 108 VM_CGC_Operation(VoidClosure* cl, const char *printGCMsg)
103 : _cl(cl), _printGCMessage(printGCMsg) { } 109 : _cl(cl), _printGCMessage(printGCMsg) { }
104 virtual VMOp_Type type() const { return VMOp_CGC_Operation; } 110 virtual VMOp_Type type() const { return VMOp_CGC_Operation; }
105 virtual void doit(); 111 virtual void doit();