64 Copy::zero_to_words((HeapWord*) &_orig, sizeof(_orig) / sizeof(HeapWord));
65 _data = NULL;
66 _data_size = 0;
67 _extra_data_size = 0;
68 _current_mileage = 0;
69 _invocation_counter = 0;
70 _backedge_counter = 0;
71 _state = empty_state;
72 _saw_free_extra_data = false;
73 // Set an initial hint. Don't use set_hint_di() because
74 // first_di() may be out of bounds if data_size is 0.
75 _hint_di = first_di();
76 // Initialize the escape information (to "don't know.");
77 _eflags = _arg_local = _arg_stack = _arg_returned = 0;
78 _parameters = NULL;
79 }
80
81 void ciMethodData::load_extra_data() {
82 MethodData* mdo = get_MethodData();
83
84 MutexLocker(mdo->extra_data_lock());
85
86 // speculative trap entries also hold a pointer to a Method so need to be translated
87 DataLayout* dp_src = mdo->extra_data_base();
88 DataLayout* end_src = mdo->args_data_limit();
89 DataLayout* dp_dst = extra_data_base();
90 for (;; dp_src = MethodData::next_extra(dp_src), dp_dst = MethodData::next_extra(dp_dst)) {
91 assert(dp_src < end_src, "moved past end of extra data");
92 assert(((intptr_t)dp_dst) - ((intptr_t)extra_data_base()) == ((intptr_t)dp_src) - ((intptr_t)mdo->extra_data_base()), "source and destination don't match");
93
94 // New traps in the MDO may have been added since we copied the
95 // data (concurrent deoptimizations before we acquired
96 // extra_data_lock above) or can be removed (a safepoint may occur
97 // in the translate_from call below) as we translate the copy:
98 // update the copy as we go.
99 int tag = dp_src->tag();
100 if (tag != DataLayout::arg_info_data_tag) {
101 memcpy(dp_dst, dp_src, ((intptr_t)MethodData::next_extra(dp_src)) - ((intptr_t)dp_src));
102 }
103
104 switch(tag) {
105 case DataLayout::speculative_trap_data_tag: {
106 ciSpeculativeTrapData* data_dst = new ciSpeculativeTrapData(dp_dst);
107 SpeculativeTrapData* data_src = new SpeculativeTrapData(dp_src);
108
109 data_dst->translate_from(data_src);
110
111 #ifdef ASSERT
112 SpeculativeTrapData* data_src2 = new SpeculativeTrapData(dp_src);
113 assert(data_src2->method() == data_src->method() && data_src2->bci() == data_src->bci(), "entries changed while translating");
114 #endif
115
116 break;
117 }
118 case DataLayout::bit_data_tag:
119 break;
120 case DataLayout::no_tag:
121 case DataLayout::arg_info_data_tag:
122 // An empty slot or ArgInfoData entry marks the end of the trap data
123 return;
124 default:
125 fatal("bad tag = %d", dp_dst->tag());
126 }
127 }
128 }
129
130 void ciMethodData::load_data() {
131 MethodData* mdo = get_MethodData();
132 if (mdo == NULL) {
133 return;
134 }
135
136 // To do: don't copy the data if it is not "ripe" -- require a minimum #
137 // of invocations.
138
139 // Snapshot the data -- actually, take an approximate snapshot of
140 // the data. Any concurrently executing threads may be changing the
141 // data as we copy it.
142 Copy::disjoint_words((HeapWord*) mdo,
143 (HeapWord*) &_orig,
144 sizeof(_orig) / HeapWordSize);
145 Arena* arena = CURRENT_ENV->arena();
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64 Copy::zero_to_words((HeapWord*) &_orig, sizeof(_orig) / sizeof(HeapWord));
65 _data = NULL;
66 _data_size = 0;
67 _extra_data_size = 0;
68 _current_mileage = 0;
69 _invocation_counter = 0;
70 _backedge_counter = 0;
71 _state = empty_state;
72 _saw_free_extra_data = false;
73 // Set an initial hint. Don't use set_hint_di() because
74 // first_di() may be out of bounds if data_size is 0.
75 _hint_di = first_di();
76 // Initialize the escape information (to "don't know.");
77 _eflags = _arg_local = _arg_stack = _arg_returned = 0;
78 _parameters = NULL;
79 }
80
81 void ciMethodData::load_extra_data() {
82 MethodData* mdo = get_MethodData();
83
84 MutexLocker ml(mdo->extra_data_lock());
85
86 // speculative trap entries also hold a pointer to a Method so need to be translated
87 DataLayout* dp_src = mdo->extra_data_base();
88 DataLayout* end_src = mdo->args_data_limit();
89 DataLayout* dp_dst = extra_data_base();
90 for (;; dp_src = MethodData::next_extra(dp_src), dp_dst = MethodData::next_extra(dp_dst)) {
91 assert(dp_src < end_src, "moved past end of extra data");
92 assert(((intptr_t)dp_dst) - ((intptr_t)extra_data_base()) == ((intptr_t)dp_src) - ((intptr_t)mdo->extra_data_base()), "source and destination don't match");
93
94 // New traps in the MDO may have been added since we copied the
95 // data (concurrent deoptimizations before we acquired
96 // extra_data_lock above) or can be removed (a safepoint may occur
97 // in the translate_from call below) as we translate the copy:
98 // update the copy as we go.
99 int tag = dp_src->tag();
100 if (tag != DataLayout::arg_info_data_tag) {
101 memcpy(dp_dst, dp_src, ((intptr_t)MethodData::next_extra(dp_src)) - ((intptr_t)dp_src));
102 }
103
104 switch(tag) {
105 case DataLayout::speculative_trap_data_tag: {
106 ciSpeculativeTrapData* data_dst = new ciSpeculativeTrapData(dp_dst);
107 SpeculativeTrapData* data_src = new SpeculativeTrapData(dp_src);
108
109 data_dst->translate_from(data_src);
110
111 #ifdef ASSERT
112 SpeculativeTrapData* data_src2 = new SpeculativeTrapData(dp_src);
113 assert(data_src2->method() == data_src->method() && data_src2->bci() == data_src->bci(), "entries changed while translating");
114 #endif
115
116 break;
117 }
118 case DataLayout::bit_data_tag:
119 break;
120 case DataLayout::no_tag:
121 case DataLayout::arg_info_data_tag:
122 // An empty slot or ArgInfoData entry marks the end of the trap data
123 {
124 return; // Need a block to avoid SS compiler bug
125 }
126 default:
127 fatal("bad tag = %d", tag);
128 }
129 }
130 }
131
132 void ciMethodData::load_data() {
133 MethodData* mdo = get_MethodData();
134 if (mdo == NULL) {
135 return;
136 }
137
138 // To do: don't copy the data if it is not "ripe" -- require a minimum #
139 // of invocations.
140
141 // Snapshot the data -- actually, take an approximate snapshot of
142 // the data. Any concurrently executing threads may be changing the
143 // data as we copy it.
144 Copy::disjoint_words((HeapWord*) mdo,
145 (HeapWord*) &_orig,
146 sizeof(_orig) / HeapWordSize);
147 Arena* arena = CURRENT_ENV->arena();
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