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comparison src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.hpp @ 13:183f41cf8bfe

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6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO Summary: Default values set by cms ergonomics are set with FLAG_SET_DEFAULT so down stream the values look like the default values and affect how later parameters are set. Set these values with FLAG_SET_ERGO instead and adjust how later parameters are interpreted. Reviewed-by: iveresov, apetrusenko, pbk, ysr
author jmasa
date Sun, 02 Mar 2008 16:10:12 -0800
parents a61af66fc99e
children fcbfc50865ab
comparison
equal deleted inserted replaced
12:6432c3bb6240 13:183f41cf8bfe
56 HeapWord* allocate_new_tlab(size_t size); 56 HeapWord* allocate_new_tlab(size_t size);
57 void fill_all_tlabs(bool retire); 57 void fill_all_tlabs(bool retire);
58 58
59 public: 59 public:
60 ParallelScavengeHeap() : CollectedHeap() { 60 ParallelScavengeHeap() : CollectedHeap() {
61 set_alignment(_perm_gen_alignment, intra_generation_alignment()); 61 set_alignment(_perm_gen_alignment, intra_heap_alignment());
62 set_alignment(_young_gen_alignment, intra_generation_alignment()); 62 set_alignment(_young_gen_alignment, intra_heap_alignment());
63 set_alignment(_old_gen_alignment, intra_generation_alignment()); 63 set_alignment(_old_gen_alignment, intra_heap_alignment());
64 } 64 }
65 65
66 // For use by VM operations 66 // For use by VM operations
67 enum CollectionType { 67 enum CollectionType {
68 Scavenge, 68 Scavenge,
90 // Returns JNI_OK on success 90 // Returns JNI_OK on success
91 virtual jint initialize(); 91 virtual jint initialize();
92 92
93 void post_initialize(); 93 void post_initialize();
94 void update_counters(); 94 void update_counters();
95
96 // The alignment used for the various generations. 95 // The alignment used for the various generations.
97 size_t perm_gen_alignment() const { return _perm_gen_alignment; } 96 size_t perm_gen_alignment() const { return _perm_gen_alignment; }
98 size_t young_gen_alignment() const { return _young_gen_alignment; } 97 size_t young_gen_alignment() const { return _young_gen_alignment; }
99 size_t old_gen_alignment() const { return _old_gen_alignment; } 98 size_t old_gen_alignment() const { return _old_gen_alignment; }
100 99
101 // The alignment used for eden and survivors within the young gen. 100 // The alignment used for eden and survivors within the young gen
102 size_t intra_generation_alignment() const { return 64 * K; } 101 // and for boundary between young gen and old gen.
102 size_t intra_heap_alignment() const { return 64 * K; }
103 103
104 size_t capacity() const; 104 size_t capacity() const;
105 size_t used() const; 105 size_t used() const;
106 106
107 // Return "true" if all generations (but perm) have reached the 107 // Return "true" if all generations (but perm) have reached the
215 }; 215 };
216 216
217 inline size_t ParallelScavengeHeap::set_alignment(size_t& var, size_t val) 217 inline size_t ParallelScavengeHeap::set_alignment(size_t& var, size_t val)
218 { 218 {
219 assert(is_power_of_2((intptr_t)val), "must be a power of 2"); 219 assert(is_power_of_2((intptr_t)val), "must be a power of 2");
220 var = round_to(val, intra_generation_alignment()); 220 var = round_to(val, intra_heap_alignment());
221 return var; 221 return var;
222 } 222 }