603 lines
22 KiB
C++
603 lines
22 KiB
C++
/*
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* Mr. 4th Dimention - Allen Webster
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*
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* 22.06.2018
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*
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* Dynamic variable system
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*
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*/
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// TOP
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internal void
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dynamic_variables_init(Dynamic_Variable_Layout *layout){
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dll_init_sentinel(&layout->sentinel);
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layout->location_counter = 1;
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}
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internal Managed_Variable_ID
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dynamic_variables_lookup(Dynamic_Variable_Layout *layout, String name){
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for (Dynamic_Variable_Slot *slot = layout->sentinel.next;
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slot != &layout->sentinel;
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slot = slot->next){
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if (match(slot->name, name)){
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return(slot->location);
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}
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}
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return(ManagedVariableIndex_ERROR);
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}
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internal Managed_Variable_ID
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dynamic_variables_create__always(Heap *heap, Dynamic_Variable_Layout *layout, String name, u64 default_value){
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int32_t alloc_size = name.size + 1 + sizeof(Dynamic_Variable_Slot);
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void *ptr = heap_allocate(heap, alloc_size);
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if (ptr != 0){
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Dynamic_Variable_Slot *new_slot = (Dynamic_Variable_Slot*)ptr;
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char *c_str = (char*)(new_slot + 1);
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String str = make_string_cap(c_str, 0, name.size + 1);
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copy(&str, name);
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terminate_with_null(&str);
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new_slot->name = str;
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new_slot->default_value = default_value;
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new_slot->location = layout->location_counter++;
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dll_insert_back(&layout->sentinel, new_slot);
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return(new_slot->location);
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}
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return(ManagedVariableIndex_ERROR);
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}
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internal Managed_Variable_ID
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dynamic_variables_lookup_or_create(Heap *heap, Dynamic_Variable_Layout *layout, String name, u64 default_value){
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Managed_Variable_ID lookup_id = dynamic_variables_lookup(layout, name);
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if (lookup_id != ManagedVariableIndex_ERROR){
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return(lookup_id);
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}
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return(dynamic_variables_create__always(heap, layout, name, default_value));
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}
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internal i32
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dynamic_variables_create(Heap *heap, Dynamic_Variable_Layout *layout, String name, u64 default_value){
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Managed_Variable_ID lookup_id = dynamic_variables_lookup(layout, name);
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if (lookup_id == ManagedVariableIndex_ERROR){
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return(dynamic_variables_create__always(heap, layout, name, default_value));
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}
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return(ManagedVariableIndex_ERROR);
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}
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internal void
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dynamic_variables_block_init(Heap *heap, Dynamic_Variable_Block *block){
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i32 max = 64;
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block->val_array = heap_array(heap, u64, max);
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block->count = 0;
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block->max = max;
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}
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internal void
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dynamic_variables_block_free(Heap *heap, Dynamic_Variable_Block *block){
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heap_free(heap, block->val_array);
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}
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internal void
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dynamic_variables_block_grow_max_to(Heap *heap, i32 new_max, Dynamic_Variable_Block *block){
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u64 *new_array = heap_array(heap, u64, new_max);
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memcpy(new_array, block->val_array, sizeof(u64)*block->count);
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heap_free(heap, block->val_array);
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block->val_array = new_array;
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}
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internal void
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dynamic_variables_block_fill_unset_values(Dynamic_Variable_Layout *layout, Dynamic_Variable_Block *block,
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i32 one_past_last_index){
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i32 first_location = block->count + 1;
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i32 one_past_last_location = one_past_last_index + 1;
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block->count = one_past_last_index;
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for (Dynamic_Variable_Slot *slot = layout->sentinel.next;
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slot != &layout->sentinel;
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slot = slot->next){
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if (first_location <= slot->location && slot->location < one_past_last_location){
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block->val_array[slot->location - 1] = slot->default_value;
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}
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}
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}
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internal b32
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dynamic_variables_get_ptr(Heap *heap,
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Dynamic_Variable_Layout *layout, Dynamic_Variable_Block *block,
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i32 location, u64 **ptr_out){
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b32 result = false;
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if (location > 0 && location < layout->location_counter){
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i32 index = location - 1;
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if (index >= block->count){
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i32 minimum_max = layout->location_counter - 1;
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if (block->max < minimum_max){
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dynamic_variables_block_grow_max_to(heap, minimum_max*2, block);
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}
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dynamic_variables_block_fill_unset_values(layout, block, index + 1);
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}
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*ptr_out = block->val_array + index;
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result = true;
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}
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return(result);
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}
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////////////////////////////////
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internal void
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dynamic_memory_bank_init(Heap *heap, Dynamic_Memory_Bank *mem_bank){
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heap_init(&mem_bank->heap);
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mem_bank->first = 0;
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mem_bank->last = 0;
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}
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internal void*
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dynamic_memory_bank_allocate(Heap *heap, Dynamic_Memory_Bank *bank, i32 size){
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void *ptr = heap_allocate(&bank->heap, size);
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if (ptr == 0){
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i32 alloc_size = clamp_bottom(4096, size*4);
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void *new_block = heap_allocate(heap, alloc_size);
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if (new_block != 0){
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Dynamic_Memory_Header *header = (Dynamic_Memory_Header*)new_block;
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sll_push(bank->first, bank->last, header);
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heap_extend(&bank->heap, header + 1, alloc_size - sizeof(*header));
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ptr = heap_allocate(&bank->heap, size);
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}
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}
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return(ptr);
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}
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internal void
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dynamic_memory_bank_free(Dynamic_Memory_Bank *bank, void *ptr){
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heap_free(&bank->heap, ptr);
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}
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internal void
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dynamic_memory_bank_free_all(Heap *heap, Dynamic_Memory_Bank *mem_bank){
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for (Dynamic_Memory_Header *header = mem_bank->first, *next = 0;
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header != 0;
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header = next){
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next = header->next;
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heap_free(heap, header);
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}
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}
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////////////////////////////////
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internal void
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dynamic_workspace_init(Heap *heap, Lifetime_Allocator *lifetime_allocator, i32 user_type, void *user_back_ptr, Dynamic_Workspace *workspace){
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dynamic_variables_block_init(heap, &workspace->var_block);
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dynamic_memory_bank_init(heap, &workspace->mem_bank);
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if (lifetime_allocator->scope_id_counter == 0){
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lifetime_allocator->scope_id_counter = 1;
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}
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workspace->scope_id = lifetime_allocator->scope_id_counter++;
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insert_u32_Ptr_table(heap, &lifetime_allocator->scope_id_to_scope_ptr_table, workspace->scope_id, workspace);
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workspace->user_type = user_type;
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workspace->user_back_ptr = user_back_ptr;
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}
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internal void
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dynamic_workspace_free(Heap *heap, Lifetime_Allocator *lifetime_allocator, Dynamic_Workspace *workspace){
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erase_u32_Ptr_table(&lifetime_allocator->scope_id_to_scope_ptr_table, workspace->scope_id);
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dynamic_variables_block_free(heap, &workspace->var_block);
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dynamic_memory_bank_free_all(heap, &workspace->mem_bank);
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}
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internal void
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dynamic_workspace_clear_contents(Heap *heap, Dynamic_Workspace *workspace){
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dynamic_variables_block_free(heap, &workspace->var_block);
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dynamic_memory_bank_free_all(heap, &workspace->mem_bank);
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dynamic_variables_block_init(heap, &workspace->var_block);
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dynamic_memory_bank_init(heap, &workspace->mem_bank);
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}
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internal u32
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dynamic_workspace_store_pointer(Heap *heap, Dynamic_Workspace *workspace, void *ptr){
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if (workspace->object_id_counter == 0){
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workspace->object_id_counter = 1;
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}
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u32 id = workspace->object_id_counter++;
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insert_u32_Ptr_table(heap, &workspace->object_id_to_object_ptr, id, ptr);
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return(id);
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}
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internal void
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dynamic_workspace_erase_pointer(Dynamic_Workspace *workspace, u32 id){
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erase_u32_Ptr_table(&workspace->object_id_to_object_ptr, id);
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}
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internal void*
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dynamic_workspace_get_pointer(Dynamic_Workspace *workspace, u32 id){
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u32_Ptr_Lookup_Result lookup = lookup_u32_Ptr_table(&workspace->object_id_to_object_ptr, id);
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if (lookup.success){
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return(*lookup.val);
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}
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return(0);
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}
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////////////////////////////////
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internal u64
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lifetime__key_hash(Lifetime_Object **object_ptr_array, i32 count){
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u64 hash = bit_1;
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for (i32 i = 0; i < count; i += 1){
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u64 x = (u64)(PtrAsInt(object_ptr_array[i]));
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x >>= 3;
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hash = (hash + ((hash << 37) ^ (((x) >> (x&1)))));
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}
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return(hash | bit_63);
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}
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internal Lifetime_Key*
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lifetime__key_table_lookup(Lifetime_Key_Table *table, u64 hash, Lifetime_Object **object_ptr_array, i32 count){
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u32 max = table->max;
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if (max > 0 && table->count > 0){
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u32 first_index = hash%max;
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u32 index = first_index;
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u64 *hashes = table->hashes;
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umem set_size = count*sizeof(Lifetime_Object*);
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for (;;){
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if (hashes[index] == hash){
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Lifetime_Key *key = table->keys[index];
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if (key->count == count &&
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memcmp(object_ptr_array, key->members, set_size) == 0){
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return(key);
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}
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}
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else if (hashes[index] == LifetimeKeyHash_Empty){
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return(0);
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}
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index += 1;
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if (index == max){
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index = 0;
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}
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if (index == first_index){
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return(0);
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}
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}
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}
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return(0);
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}
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internal Lifetime_Key_Table
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lifetime__key_table_copy(Heap *heap, Lifetime_Key_Table table, u32 new_max);
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internal void
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lifetime__key_table_insert(Heap *heap, Lifetime_Key_Table *table, u64 hash, Lifetime_Key *key){
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{
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u32 max = table->max;
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u32 count = table->count;
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if (max == 0 || (count + 1)*6 > max*5){
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Assert(heap != 0);
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Lifetime_Key_Table new_table = lifetime__key_table_copy(heap, *table, max*2);
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heap_free(heap, table->mem_ptr);
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*table = new_table;
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}
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}
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{
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u32 max = table->max;
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if (max > 0){
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u32 first_index = hash%max;
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u32 index = first_index;
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u64 *hashes = table->hashes;
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for (;;){
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if (hashes[index] == LifetimeKeyHash_Empty ||
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hashes[index] == LifetimeKeyHash_Deleted){
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hashes[index] = hash;
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table->keys[index] = key;
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table->count += 1;
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return;
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}
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index += 1;
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if (index == max){
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index = 0;
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}
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if (index == first_index){
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return;
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}
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}
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}
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}
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}
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internal void
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lifetime__key_table_erase(Lifetime_Key_Table *table, Lifetime_Key *erase_key){
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u32 max = table->max;
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if (max > 0 && table->count > 0){
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u64 hash = lifetime__key_hash(erase_key->members, erase_key->count);
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u32 first_index = hash%max;
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u32 index = first_index;
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u64 *hashes = table->hashes;
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for (;;){
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if (hashes[index] == hash){
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Lifetime_Key *key = table->keys[index];
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if (erase_key == key){
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hashes[index] = LifetimeKeyHash_Deleted;
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table->keys[index] = 0;
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return;
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}
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}
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else if (hashes[index] == LifetimeKeyHash_Empty){
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return;
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}
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index += 1;
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if (index == max){
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index = 0;
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}
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if (index == first_index){
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return;
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}
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}
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}
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}
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internal Lifetime_Key_Table
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lifetime__key_table_copy(Heap *heap, Lifetime_Key_Table table, u32 new_max){
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Lifetime_Key_Table new_table = {0};
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new_table.max = clamp_bottom(table.max, new_max);
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new_table.max = clamp_bottom(307, new_table.max);
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i32 item_size = sizeof(*new_table.hashes) + sizeof(*new_table.keys);
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new_table.mem_ptr = heap_allocate(heap, item_size*new_table.max);
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memset(new_table.mem_ptr, 0, item_size*new_table.max);
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new_table.hashes = (u64*)(new_table.mem_ptr);
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new_table.keys = (Lifetime_Key**)(new_table.hashes + new_table.max);
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for (u32 i = 0; i < table.max; i += 1){
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if ((table.hashes[i]&bit_63) != 0){
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lifetime__key_table_insert(0, &new_table, table.hashes[i], table.keys[i]);
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}
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}
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return(new_table);
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}
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internal void
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lifetime__free_key(Heap *heap, Lifetime_Allocator *lifetime_allocator, Lifetime_Key *key, Lifetime_Object *skip_object){
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// Deinit
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dynamic_workspace_free(heap, lifetime_allocator, &key->dynamic_workspace);
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// Remove From Objects
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i32 count = key->count;
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Lifetime_Object **object_ptr = key->members;
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for (i32 i = 0; i < count; i += 1, object_ptr += 1){
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if (*object_ptr == skip_object) continue;
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Lifetime_Key_Ref_Node *delete_point_node = 0;
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i32 delete_point_i = 0;
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i32 key_i = 0;
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Lifetime_Object *object = *object_ptr;
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for (Lifetime_Key_Ref_Node *node = object->key_node_first;
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node != 0;
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node = node->next){
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i32 one_past_last = clamp_top(ArrayCount(node->keys), object->key_count - key_i);
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for (i32 j = 0; j < one_past_last; j += 1){
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if (node->keys[j] == key){
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delete_point_node = node;
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delete_point_i = j;
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goto double_break;
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}
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}
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key_i += one_past_last;
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}
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double_break:;
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Assert(delete_point_node != 0);
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Lifetime_Key_Ref_Node *last_node = object->key_node_last;
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Lifetime_Key *last_key = last_node->keys[(object->key_count - 1) % ArrayCount(last_node->keys)];
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Assert(last_key != 0);
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delete_point_node->keys[delete_point_i] = last_key;
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object->key_count -= 1;
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if ((object->key_count % lifetime_key_reference_per_node) == 0){
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zdll_remove(object->key_node_first, object->key_node_last, last_node);
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zdll_push_back(lifetime_allocator->free_key_references.first, lifetime_allocator->free_key_references.last, last_node);
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}
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}
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// Free
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lifetime__key_table_erase(&lifetime_allocator->key_table, key);
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erase_Ptr_table(&lifetime_allocator->key_check_table, key);
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heap_free(heap, key->members);
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zdll_push_back(lifetime_allocator->free_keys.first, lifetime_allocator->free_keys.last, key);
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}
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internal Lifetime_Key_Ref_Node*
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lifetime__alloc_key_reference_node(Heap *heap, Lifetime_Allocator *lifetime_allocator){
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Lifetime_Key_Ref_Node *result = lifetime_allocator->free_key_references.first;
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if (result == 0){
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i32 new_node_count = 32;
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Lifetime_Key_Ref_Node *new_nodes = heap_array(heap, Lifetime_Key_Ref_Node, new_node_count);
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Lifetime_Key_Ref_Node *new_node_ptr = new_nodes;
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for (i32 i = 0; i < new_node_count; i += 1, new_node_ptr += 1){
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zdll_push_back(lifetime_allocator->free_key_references.first,
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lifetime_allocator->free_key_references.last,
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new_node_ptr);
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}
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lifetime_allocator->free_key_references.count += new_node_count;
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result = lifetime_allocator->free_key_references.first;
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}
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zdll_remove(lifetime_allocator->free_key_references.first, lifetime_allocator->free_key_references.last,
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result);
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return(result);
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}
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internal void
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lifetime__object_add_key(Heap *heap, Lifetime_Allocator *lifetime_allocator,
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Lifetime_Object *object, Lifetime_Key *key){
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Lifetime_Key_Ref_Node *last_node = object->key_node_last;
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b32 insert_on_new_node = false;
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if (last_node == 0){
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insert_on_new_node = true;
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}
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else{
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i32 next_insert_slot = object->key_count%ArrayCount(last_node->keys);
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if (next_insert_slot != 0){
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last_node->keys[next_insert_slot] = key;
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object->key_count += 1;
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}
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else{
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insert_on_new_node = true;
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}
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}
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if (insert_on_new_node){
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Lifetime_Key_Ref_Node *new_node = lifetime__alloc_key_reference_node(heap, lifetime_allocator);
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zdll_push_back(object->key_node_first, object->key_node_last, new_node);
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memset(new_node->keys, 0, sizeof(new_node->keys));
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new_node->keys[0] = key;
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object->key_count += 1;
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}
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}
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internal Lifetime_Object*
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lifetime_alloc_object(Heap *heap, Lifetime_Allocator *lifetime_allocator, i32 user_type, void *user_back_ptr){
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Lifetime_Object *object = lifetime_allocator->free_objects.first;
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if (object == 0){
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i32 new_object_count = 256;
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Lifetime_Object *new_objects = heap_array(heap, Lifetime_Object, new_object_count);
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Lifetime_Object *new_object_ptr = new_objects;
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for (i32 i = 0; i < new_object_count; i += 1, new_object_ptr += 1){
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zdll_push_back(lifetime_allocator->free_objects.first, lifetime_allocator->free_objects.last, new_object_ptr);
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}
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lifetime_allocator->free_objects.count += new_object_count;
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object = lifetime_allocator->free_objects.first;
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}
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zdll_remove(lifetime_allocator->free_objects.first, lifetime_allocator->free_objects.last, object);
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lifetime_allocator->free_objects.count -= 1;
|
|
|
|
memset(object, 0, sizeof(*object));
|
|
dynamic_workspace_init(heap, lifetime_allocator, user_type, user_back_ptr, &object->workspace);
|
|
|
|
return(object);
|
|
}
|
|
|
|
internal void
|
|
lifetime__object_free_all_keys(Heap *heap, Lifetime_Allocator *lifetime_allocator, Lifetime_Object *lifetime_object){
|
|
i32 key_i = 0;
|
|
for (Lifetime_Key_Ref_Node *node = lifetime_object->key_node_first;
|
|
node != 0;
|
|
node = node->next){
|
|
i32 one_past_last = clamp_top(ArrayCount(node->keys), lifetime_object->key_count - key_i);
|
|
for (i32 i = 0; i < one_past_last; i += 1){
|
|
lifetime__free_key(heap, lifetime_allocator, node->keys[i], lifetime_object);
|
|
}
|
|
key_i += one_past_last;
|
|
}
|
|
|
|
if (lifetime_object->key_count > 0){
|
|
lifetime_object->key_node_last->next = lifetime_allocator->free_key_references.first;
|
|
lifetime_allocator->free_key_references.first = lifetime_object->key_node_first;
|
|
i32 node_count = (lifetime_object->key_count + (lifetime_key_reference_per_node - 1))/lifetime_key_reference_per_node;
|
|
lifetime_allocator->free_key_references.count += node_count;
|
|
}
|
|
}
|
|
|
|
internal void
|
|
lifetime_free_object(Heap *heap, Lifetime_Allocator *lifetime_allocator, Lifetime_Object *lifetime_object){
|
|
lifetime__object_free_all_keys(heap, lifetime_allocator, lifetime_object);
|
|
dynamic_workspace_free(heap, lifetime_allocator, &lifetime_object->workspace);
|
|
zdll_push_back(lifetime_allocator->free_objects.first, lifetime_allocator->free_objects.last, lifetime_object);
|
|
}
|
|
|
|
internal void
|
|
lifetime_object_reset(Heap *heap, Lifetime_Allocator *lifetime_allocator, Lifetime_Object *lifetime_object){
|
|
lifetime__object_free_all_keys(heap, lifetime_allocator, lifetime_object);
|
|
lifetime_object->key_node_first = 0;
|
|
lifetime_object->key_node_last = 0;
|
|
lifetime_object->key_count = 0;
|
|
dynamic_workspace_clear_contents(heap, &lifetime_object->workspace);
|
|
}
|
|
|
|
internal i32
|
|
lifetime_sort_object_set__part(Lifetime_Object **ptr_array, i32 first, i32 one_past_last){
|
|
i32 pivot_index = one_past_last - 1;
|
|
Lifetime_Object *pivot = ptr_array[pivot_index];
|
|
i32 j = first;
|
|
for (i32 i = first; i < pivot_index; i += 1){
|
|
Lifetime_Object *object = ptr_array[i];
|
|
if (object < pivot){
|
|
Swap(Lifetime_Object*, ptr_array[i], ptr_array[j]);
|
|
j += 1;
|
|
}
|
|
}
|
|
Swap(Lifetime_Object*, ptr_array[j], ptr_array[pivot_index]);
|
|
return(j);
|
|
}
|
|
|
|
internal void
|
|
lifetime_sort_object_set__quick(Lifetime_Object **ptr_array, i32 first, i32 one_past_last){
|
|
if (first + 1 < one_past_last){
|
|
i32 pivot = lifetime_sort_object_set__part(ptr_array, first, one_past_last);
|
|
lifetime_sort_object_set__quick(ptr_array, first, pivot);
|
|
lifetime_sort_object_set__quick(ptr_array, pivot + 1, one_past_last);
|
|
}
|
|
}
|
|
|
|
internal i32
|
|
lifetime_sort_and_dedup_object_set(Lifetime_Object **ptr_array, i32 count){
|
|
lifetime_sort_object_set__quick(ptr_array, 0, count);
|
|
Lifetime_Object **ptr_write = ptr_array + 1;
|
|
Lifetime_Object **ptr_read = ptr_array + 1;
|
|
for (i32 i = 1; i < count; i += 1, ptr_read += 1){
|
|
if (ptr_read[-1] < ptr_read[0]){
|
|
*ptr_write = *ptr_read;
|
|
ptr_write += 1;
|
|
}
|
|
}
|
|
return((i32)(ptr_write - ptr_array));
|
|
}
|
|
|
|
internal Lifetime_Key*
|
|
lifetime_get_or_create_intersection_key(Heap *heap, Lifetime_Allocator *lifetime_allocator, Lifetime_Object **object_ptr_array, i32 count){
|
|
u64 hash = lifetime__key_hash(object_ptr_array, count);
|
|
|
|
// Lookup
|
|
Lifetime_Key *existing_key = lifetime__key_table_lookup(&lifetime_allocator->key_table, hash,
|
|
object_ptr_array, count);
|
|
if (existing_key != 0){
|
|
return(existing_key);
|
|
}
|
|
|
|
// Allocate
|
|
Lifetime_Key *new_key = lifetime_allocator->free_keys.first;
|
|
if (new_key == 0){
|
|
i32 new_key_count = 256;
|
|
Lifetime_Key *new_keys = heap_array(heap, Lifetime_Key, new_key_count);
|
|
Lifetime_Key *new_key_ptr = new_keys;
|
|
for (i32 i = 0; i < new_key_count; i += 1, new_key_ptr += 1){
|
|
zdll_push_back(lifetime_allocator->free_keys.first, lifetime_allocator->free_keys.last, new_key_ptr);
|
|
}
|
|
lifetime_allocator->free_keys.count += new_key_count;
|
|
new_key = lifetime_allocator->free_keys.first;
|
|
}
|
|
zdll_remove(lifetime_allocator->free_keys.first, lifetime_allocator->free_keys.last, new_key);
|
|
memset(new_key, 0, sizeof(*new_key));
|
|
|
|
// Add to Objects
|
|
Lifetime_Object **object_ptr = object_ptr_array;
|
|
for (i32 i = 0; i < count; i += 1, object_ptr += 1){
|
|
Lifetime_Object *object = *object_ptr;
|
|
lifetime__object_add_key(heap, lifetime_allocator, object, new_key);
|
|
}
|
|
|
|
// Initialize
|
|
new_key->members = heap_array(heap, Lifetime_Object*, count);
|
|
memcpy(new_key->members, object_ptr_array, sizeof(*new_key->members)*count);
|
|
new_key->count = count;
|
|
dynamic_workspace_init(heap, lifetime_allocator,
|
|
DynamicWorkspace_Intersected, new_key,
|
|
&new_key->dynamic_workspace);
|
|
|
|
lifetime__key_table_insert(heap, &lifetime_allocator->key_table, hash, new_key);
|
|
insert_Ptr_table(heap, &lifetime_allocator->key_check_table, new_key);
|
|
|
|
return(new_key);
|
|
}
|
|
|
|
internal b32
|
|
lifetime_key_check(Lifetime_Allocator *lifetime_allocator, Lifetime_Key *key){
|
|
return(lookup_Ptr_table(&lifetime_allocator->key_check_table, key));
|
|
}
|
|
|
|
// BOTTOM
|
|
|