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Code Issues Releases Activity

Node lookup acceleration

master
Allen Webster 2019-02-08 23:52:15 -08:00
parent 999eced259
commit 400b66803c
2 changed files with 60 additions and 25 deletions
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78
4ed_history.cpp
View File

@ -8,24 +8,6 @@
// TOP
// TODO(allen): do(make an index <-> node acceleration structure for history)
internal i32
history__to_index(Node *sentinel, Node *node){
i32 result = -1;
i32 counter = 0;
Node *it = sentinel;
do{
if (it == node){
result = counter;
break;
}
counter += 1;
it = it->next;
} while (it != sentinel);
return(result);
}
internal Node*
history__to_node(Node *sentinel, int32_t index){
Node *result = 0;
@ -42,12 +24,37 @@ history__to_node(Node *sentinel, int32_t index){
return(result);
}
internal i32
history__to_index(History *history, Node *node){
Node *sentinel = &history->records;
return(history__to_index(sentinel, node));
internal void
history__push_back_record_ptr(Heap *heap, Record_Ptr_Lookup_Table *lookup, Record *record){
if (lookup->records == 0 || lookup->count == lookup->max){
i32 new_max = clamp_bottom(1024, lookup->max*2);
Record **new_records = (Record**)heap_allocate(heap, sizeof(Record*)*new_max);
block_copy(new_records, lookup->records, sizeof(*new_records)*lookup->count);
if (lookup->records != 0){
heap_free(heap, lookup->records);
}
lookup->records = new_records;
lookup->max = new_max;
}
Assert(lookup->count < lookup->max);
lookup->records[lookup->count] = record;
lookup->count += 1;
}
internal void
history__merge_record_ptr_range_to_one_ptr(Record_Ptr_Lookup_Table *lookup, int32_t first, int32_t one_past_last, Record *record){
first -= 1;
one_past_last -= 1;
Assert(0 <= first && first <= one_past_last && one_past_last <= lookup->count);
if (first < one_past_last){
i32 shift = 1 + first - one_past_last;
block_copy(lookup->records + one_past_last + shift, lookup->records + one_past_last, lookup->count - one_past_last);
lookup->count += shift;
}
lookup->records[first] = record;
}
#if 0
internal Node*
history__to_node(History *history, int32_t index){
Node *result = 0;
@ -57,6 +64,23 @@ history__to_node(History *history, int32_t index){
}
return(result);
}
#else
internal Node*
history__to_node(History *history, int32_t index){
Node *result = 0;
if (index == 0){
result = &history->records;
}
else if (0 < index && index <= history->record_count){
Record_Ptr_Lookup_Table *lookup = &history->record_lookup;
Assert(lookup->count == history->record_count);
result = &lookup->records[index - 1]->node;
}
return(result);
}
#endif
////////////////////////////////
internal Record*
history__allocate_record(Heap *heap, History *history){
@ -112,6 +136,7 @@ history_init(Application_Links *app, History *history){
dll_init_sentinel(&history->free_records);
dll_init_sentinel(&history->records);
history->record_count = 0;
block_zero_struct(&history->record_lookup);
}
internal b32
@ -173,9 +198,10 @@ history_get_dummy_record(History *history){
}
internal void
history__stash_record(History *history, Record *new_record){
history__stash_record(Heap *heap, History *history, Record *new_record){
dll_insert_back(&history->records, &new_record->node);
history->record_count += 1;
history__push_back_record_ptr(heap, &history->record_lookup, new_record);
}
internal void
@ -212,7 +238,7 @@ history_record_edit(Heap *heap, Global_History *global_history, History *history
}
Record *new_record = history__allocate_record(heap, history);
history__stash_record(history, new_record);
history__stash_record(heap, history, new_record);
new_record->restore_point = temp_memory_light(begin_temp_memory(&history->arena));
new_record->edit_number = global_history_get_edit_number(global_history);
@ -239,7 +265,7 @@ history_record_edit(Heap *heap, Global_History *global_history, History *history
}
Record *new_record = history__allocate_record(heap, history);
history__stash_record(history, new_record);
history__stash_record(heap, history, new_record);
new_record->restore_point = temp_memory_light(begin_temp_memory(&history->arena));
new_record->edit_number = global_history_get_edit_number(global_history);
@ -380,6 +406,8 @@ history_merge_records(Heap *heap, History *history, i32 first_index, i32 last_in
}
new_record->group.count = count;
history__merge_record_ptr_range_to_one_ptr(&history->record_lookup, first_index, last_index + 1, new_record);
}
// BOTTOM

7
4ed_history.h
View File

@ -47,6 +47,12 @@ struct Record{
};
};
struct Record_Ptr_Lookup_Table{
Record **records;
i32 count;
i32 max;
};
struct History{
b32 activated;
Arena arena;
@ -54,6 +60,7 @@ struct History{
Node free_records;
Node records;
i32 record_count;
Record_Ptr_Lookup_Table record_lookup;
};
struct Global_History{