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comparison src/share/vm/gc_implementation/parallelScavenge/psScavenge.cpp @ 4909:95f6641e38e0

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7144296: PS: Optimize nmethods processing Summary: Prunes scavenge roots in code list every young GC, promote objects directly pointed by the code immediately Reviewed-by: johnc, jcoomes
author iveresov
date Fri, 10 Feb 2012 17:40:20 -0800
parents aa3d708d67c4
children ab4422d0ed59
comparison
equal deleted inserted replaced
4888:3c4621be5149 4909:95f6641e38e0
22 * 22 *
23 */ 23 */
24 24
25 #include "precompiled.hpp" 25 #include "precompiled.hpp"
26 #include "classfile/symbolTable.hpp" 26 #include "classfile/symbolTable.hpp"
27 #include "code/codeCache.hpp"
27 #include "gc_implementation/parallelScavenge/cardTableExtension.hpp" 28 #include "gc_implementation/parallelScavenge/cardTableExtension.hpp"
28 #include "gc_implementation/parallelScavenge/gcTaskManager.hpp" 29 #include "gc_implementation/parallelScavenge/gcTaskManager.hpp"
29 #include "gc_implementation/parallelScavenge/generationSizer.hpp" 30 #include "gc_implementation/parallelScavenge/generationSizer.hpp"
30 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp" 31 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp"
31 #include "gc_implementation/parallelScavenge/psAdaptiveSizePolicy.hpp" 32 #include "gc_implementation/parallelScavenge/psAdaptiveSizePolicy.hpp"
98 assert ((oopDesc::load_decode_heap_oop_not_null(p))->is_oop(), 99 assert ((oopDesc::load_decode_heap_oop_not_null(p))->is_oop(),
99 "expected an oop while scanning weak refs"); 100 "expected an oop while scanning weak refs");
100 101
101 // Weak refs may be visited more than once. 102 // Weak refs may be visited more than once.
102 if (PSScavenge::should_scavenge(p, _to_space)) { 103 if (PSScavenge::should_scavenge(p, _to_space)) {
103 PSScavenge::copy_and_push_safe_barrier(_promotion_manager, p); 104 PSScavenge::copy_and_push_safe_barrier<T, /*promote_immediately=*/false>(_promotion_manager, p);
104 } 105 }
105 } 106 }
106 virtual void do_oop(oop* p) { PSKeepAliveClosure::do_oop_work(p); } 107 virtual void do_oop(oop* p) { PSKeepAliveClosure::do_oop_work(p); }
107 virtual void do_oop(narrowOop* p) { PSKeepAliveClosure::do_oop_work(p); } 108 virtual void do_oop(narrowOop* p) { PSKeepAliveClosure::do_oop_work(p); }
108 }; 109 };
600 601
601 COMPILER2_PRESENT(DerivedPointerTable::update_pointers()); 602 COMPILER2_PRESENT(DerivedPointerTable::update_pointers());
602 603
603 NOT_PRODUCT(reference_processor()->verify_no_references_recorded()); 604 NOT_PRODUCT(reference_processor()->verify_no_references_recorded());
604 605
606 CodeCache::prune_scavenge_root_nmethods();
607
605 // Re-verify object start arrays 608 // Re-verify object start arrays
606 if (VerifyObjectStartArray && 609 if (VerifyObjectStartArray &&
607 VerifyAfterGC) { 610 VerifyAfterGC) {
608 old_gen->verify_object_start_array(); 611 old_gen->verify_object_start_array();
609 perm_gen->verify_object_start_array(); 612 perm_gen->verify_object_start_array();