70 size_t _min_heap_byte_size; |
70 size_t _min_heap_byte_size; |
71 |
71 |
72 size_t _space_alignment; |
72 size_t _space_alignment; |
73 size_t _heap_alignment; |
73 size_t _heap_alignment; |
74 |
74 |
75 // Set to true when policy wants soft refs cleared. |
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76 // Reset to false by gc after it clears all soft refs. |
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77 bool _should_clear_all_soft_refs; |
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78 |
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79 // Set to true by the GC if the just-completed gc cleared all |
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80 // softrefs. This is set to true whenever a gc clears all softrefs, and |
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81 // set to false each time gc returns to the mutator. For example, in the |
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82 // ParallelScavengeHeap case the latter would be done toward the end of |
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83 // mem_allocate() where it returns op.result() |
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84 bool _all_soft_refs_clear; |
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85 |
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86 CollectorPolicy(); |
75 CollectorPolicy(); |
87 |
76 |
88 public: |
77 public: |
89 virtual void initialize_all() { |
78 virtual void initialize_all() { |
90 initialize_alignments(); |
79 initialize_alignments(); |
99 size_t heap_alignment() { return _heap_alignment; } |
88 size_t heap_alignment() { return _heap_alignment; } |
100 |
89 |
101 size_t initial_heap_byte_size() { return _initial_heap_byte_size; } |
90 size_t initial_heap_byte_size() { return _initial_heap_byte_size; } |
102 size_t max_heap_byte_size() { return _max_heap_byte_size; } |
91 size_t max_heap_byte_size() { return _max_heap_byte_size; } |
103 size_t min_heap_byte_size() { return _min_heap_byte_size; } |
92 size_t min_heap_byte_size() { return _min_heap_byte_size; } |
104 |
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105 bool should_clear_all_soft_refs() { return _should_clear_all_soft_refs; } |
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106 void set_should_clear_all_soft_refs(bool v) { _should_clear_all_soft_refs = v; } |
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107 // Returns the current value of _should_clear_all_soft_refs. |
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108 // _should_clear_all_soft_refs is set to false as a side effect. |
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109 bool use_should_clear_all_soft_refs(bool v); |
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110 bool all_soft_refs_clear() { return _all_soft_refs_clear; } |
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111 void set_all_soft_refs_clear(bool v) { _all_soft_refs_clear = v; } |
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112 |
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113 // Called by the GC after Soft Refs have been cleared to indicate |
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114 // that the request in _should_clear_all_soft_refs has been fulfilled. |
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115 virtual void cleared_all_soft_refs(); |
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116 }; |
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117 |
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118 class ClearedAllSoftRefs : public StackObj { |
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119 bool _clear_all_soft_refs; |
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120 CollectorPolicy* _collector_policy; |
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121 public: |
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122 ClearedAllSoftRefs(bool clear_all_soft_refs, |
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123 CollectorPolicy* collector_policy) : |
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124 _clear_all_soft_refs(clear_all_soft_refs), |
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125 _collector_policy(collector_policy) {} |
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126 |
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127 ~ClearedAllSoftRefs() { |
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128 if (_clear_all_soft_refs) { |
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129 _collector_policy->cleared_all_soft_refs(); |
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130 } |
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131 } |
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132 |
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133 bool should_clear() { return _clear_all_soft_refs; } |
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134 }; |
93 }; |
135 |
94 |
136 class GenCollectorPolicy : public CollectorPolicy { |
95 class GenCollectorPolicy : public CollectorPolicy { |
137 friend class TestGenCollectorPolicy; |
96 friend class TestGenCollectorPolicy; |
138 friend class VMStructs; |
97 friend class VMStructs; |
217 AdaptiveSizePolicy* size_policy() { return _size_policy; } |
176 AdaptiveSizePolicy* size_policy() { return _size_policy; } |
218 |
177 |
219 virtual void initialize_size_policy(size_t init_eden_size, |
178 virtual void initialize_size_policy(size_t init_eden_size, |
220 size_t init_promo_size, |
179 size_t init_promo_size, |
221 size_t init_survivor_size); |
180 size_t init_survivor_size); |
222 |
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223 virtual void cleared_all_soft_refs(); |
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224 |
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225 }; |
181 }; |
226 |
182 |
227 class MarkSweepPolicy : public GenCollectorPolicy { |
183 class MarkSweepPolicy : public GenCollectorPolicy { |
228 protected: |
184 protected: |
229 void initialize_alignments(); |
185 void initialize_alignments(); |