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4coder/4ed_working_set.cpp

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/*
* Mr. 4th Dimention - Allen Webster
*
* 03.01.2017
*
* Working_Set data structure
*
*/
// TOP
internal void
working_set_file_default_settings(Working_Set *working_set, Editing_File *file){
block_zero_struct(&file->settings);
file->settings.display_width = working_set->default_display_width;
file->settings.minimum_base_display_width = working_set->default_minimum_base_display_width;
file->settings.wrap_indicator = WrapIndicator_Show_At_Wrap_Edge;
}
////////////////////////////////
internal void
file_change_notification_check(System_Functions *system, Arena *scratch, Working_Set *working_set, Editing_File *file){
if (file->canon.name_size > 0 && !file->settings.unimportant){
String_Const_u8 name = SCu8(file->canon.name_space, file->canon.name_size);
File_Attributes attributes = system->quick_file_attributes(scratch, name);
if (attributes.last_write_time > file->attributes.last_write_time){
file_add_dirty_flag(file, DirtyState_UnloadedChanges);
if (file->external_mod_node.next == 0){
LogEventF(log_string(M), &working_set->arena, file->id, 0, system->thread_get_id(),
"external modification [lwt=0x%llx]", attributes.last_write_time);
dll_insert_back(&working_set->has_external_mod_sentinel, &file->external_mod_node);
system->signal_step(0);
}
}
file->attributes = attributes;
}
}
internal void
file_change_notification_thread_main(void *ptr){
Models *models = (Models*)ptr;
System_Functions *system = models->system;
Arena arena = make_arena_system(system);
Working_Set *working_set = &models->working_set;
for (;;){
system->sleep(Thousand(250));
Mutex_Lock lock(system, working_set->mutex);
if (working_set->active_file_count > 0){
i32 check_count = working_set->active_file_count/16;
check_count = clamp(1, check_count, 100);
Node *used = &working_set->active_file_sentinel;
Node *node = working_set->sync_check_iterator;
if (node == 0 || node == used){
node = used->next;
}
for (i32 i = 0; i < check_count; i += 1){
Editing_File *file = CastFromMember(Editing_File, main_chain_node, node);
node = node->next;
if (node == used){
node = node->next;
}
file_change_notification_check(system, &arena, working_set, file);
}
working_set->sync_check_iterator = node;
}
}
}
////////////////////////////////
internal Editing_File*
working_set_allocate_file(Working_Set *working_set, Lifetime_Allocator *lifetime_allocator){
Editing_File *file = working_set->free_files;
if (file == 0){
file = push_array(&working_set->arena, Editing_File, 1);
}
else{
sll_stack_pop(working_set->free_files);
}
block_zero_struct(file);
dll_insert_back(&working_set->active_file_sentinel, &file->main_chain_node);
dll_insert_back(&working_set->touch_order_sentinel, &file->touch_node);
working_set->active_file_count += 1;
file->id = working_set->id_counter;
working_set->id_counter += 1;
working_set_file_default_settings(working_set, file);
table_insert(&working_set->id_to_ptr_table,
(u64)file->id, (u64)(PtrAsInt(file)));
return(file);
}
internal void
working_set_free_file(Heap *heap, Working_Set *working_set, Editing_File *file){
if (working_set->sync_check_iterator == &file->main_chain_node){
working_set->sync_check_iterator = working_set->sync_check_iterator->next;
}
dll_remove(&file->main_chain_node);
dll_remove(&file->touch_node);
working_set->active_file_count -= 1;
table_erase(&working_set->id_to_ptr_table, file->id);
sll_stack_push(working_set->free_files, file);
}
internal Editing_File*
working_set_get_file(Working_Set *working_set, Buffer_ID id){
Editing_File *result = 0;
u64 val = 0;
if (table_read(&working_set->id_to_ptr_table, id, &val)){
result = (Editing_File*)(IntAsPtr(val));
}
return(result);
}
internal void
working_set_init(Models *models, Working_Set *working_set){
block_zero_struct(working_set);
System_Functions *system = models->system;
working_set->arena = make_arena_system(system);
working_set->id_counter = 1;
dll_init_sentinel(&working_set->active_file_sentinel);
dll_init_sentinel(&working_set->touch_order_sentinel);
dll_init_sentinel(&working_set->edit_finished_sentinel);
working_set->edit_finished_timer = system->wake_up_timer_create();
local_const i32 slot_count = 128;
Base_Allocator *allocator = get_base_allocator_system(system);
working_set->id_to_ptr_table = make_table_u64_u64(allocator, slot_count);
working_set->canon_table = make_table_Data_u64(allocator, slot_count);
working_set->name_table = make_table_Data_u64(allocator, slot_count);
dll_init_sentinel(&working_set->has_external_mod_sentinel);
working_set->mutex = system->mutex_make();
working_set->file_change_thread = system->thread_launch(file_change_notification_thread_main, models);
}
internal Editing_File*
working_set_contains__generic(Working_Set *working_set, Table_Data_u64 *table, String_Const_u8 name){
Editing_File *result = 0;
u64 val = 0;
if (table_read(table, make_data(name.str, name.size), &val)){
result = working_set_get_file(working_set, (Buffer_ID)val);
}
return(result);
}
internal b32
working_set_add__generic(Table_Data_u64 *table, Buffer_ID id, String_Const_u8 name){
return(table_insert(table, make_data(name.str, name.size), id));
}
internal void
working_set_remove__generic(Table_Data_u64 *table, String_Const_u8 name){
table_erase(table, make_data(name.str, name.size));
}
internal Editing_File*
working_set_contains_canon(Working_Set *working_set, String_Const_u8 name){
return(working_set_contains__generic(working_set, &working_set->canon_table, name));
}
internal b32
working_set_canon_add(Working_Set *working_set, Editing_File *file, String_Const_u8 name){
return(working_set_add__generic(&working_set->canon_table, file->id, name));
}
internal void
working_set_canon_remove(Working_Set *working_set, String_Const_u8 name){
working_set_remove__generic(&working_set->canon_table, name);
}
internal Editing_File*
working_set_contains_name(Working_Set *working_set, String_Const_u8 name){
return(working_set_contains__generic(working_set, &working_set->name_table, name));
}
internal b32
working_set_add_name(Heap *heap, Working_Set *working_set, Editing_File *file, String_Const_u8 name){
return(working_set_add__generic(&working_set->name_table, file->id, name));
}
internal void
working_set_remove_name(Working_Set *working_set, String_Const_u8 name){
working_set_remove__generic(&working_set->name_table, name);
}
internal Editing_File*
get_file_from_identifier(System_Functions *system, Working_Set *working_set, Buffer_Identifier buffer){
Editing_File *file = 0;
if (buffer.id != 0){
file = working_set_get_file(working_set, buffer.id);
}
else if (buffer.name != 0){
String_Const_u8 name = SCu8(buffer.name, buffer.name_len);
file = working_set_contains_name(working_set, name);
}
return(file);
}
////////////////////////////////
// TODO(allen): Bring the clipboard fully to the custom side.
internal String_Const_u8*
working_set_next_clipboard_string(Heap *heap, Working_Set *working, umem str_size){
i32 clipboard_current = working->clipboard_current;
if (working->clipboard_size == 0){
clipboard_current = 0;
working->clipboard_size = 1;
}
else{
++clipboard_current;
if (clipboard_current >= working->clipboard_max_size){
clipboard_current = 0;
}
else if (working->clipboard_size <= clipboard_current){
working->clipboard_size = clipboard_current + 1;
}
}
String_Const_u8 *result = &working->clipboards[clipboard_current];
working->clipboard_current = clipboard_current;
working->clipboard_rolling = clipboard_current;
if (result->str != 0){
heap_free(heap, result->str);
}
u8 *new_str = (u8*)heap_allocate(heap, (i32)(str_size + 1));
*result = SCu8(new_str, str_size);
return(result);
}
internal String_Const_u8*
working_set_clipboard_index(Working_Set *working, i32 index){
String_Const_u8 *result = 0;
i32 size = working->clipboard_size;
i32 current = working->clipboard_current;
if (index >= 0 && size > 0){
index = index % size;
index = current + size - index;
index = index % size;
result = &working->clipboards[index];
}
return(result);
}
internal String_Const_u8*
working_set_clipboard_head(Working_Set *working){
String_Const_u8 *result = 0;
if (working->clipboard_size > 0){
working->clipboard_rolling = 0;
result = working_set_clipboard_index(working, working->clipboard_rolling);
}
return(result);
}
internal String_Const_u8*
working_set_clipboard_roll_down(Working_Set *working){
String_Const_u8 *result = 0;
if (working->clipboard_size > 0){
i32 clipboard_index = working->clipboard_rolling;
++clipboard_index;
working->clipboard_rolling = clipboard_index;
result = working_set_clipboard_index(working, working->clipboard_rolling);
}
return(result);
}
////////////////////////////////
// TODO(allen): get rid of this???
internal b32
get_canon_name(System_Functions *system, Arena *scratch, String_Const_u8 file_name, Editing_File_Name *canon_name){
Temp_Memory temp = begin_temp(scratch);
String_Const_u8 canonical = system->get_canonical(scratch, file_name);
umem size = Min(sizeof(canon_name->name_space), canonical.size);
block_copy(canon_name->name_space, canonical.str, size);
canon_name->name_size = size;
end_temp(temp);
file_name_terminate(canon_name);
return(canon_name->name_size > 0);
}
internal void
file_bind_file_name(System_Functions *system, Heap *heap, Working_Set *working_set, Editing_File *file, String_Const_u8 canon_file_name){
Assert(file->unique_name.name_size == 0);
Assert(file->canon.name_size == 0);
umem size = canon_file_name.size;
size = clamp_top(size, sizeof(file->canon.name_space) - 1);
file->canon.name_size = size;
block_copy(file->canon.name_space, canon_file_name.str, size);
file_name_terminate(&file->canon);
b32 result = working_set_canon_add(working_set, file, string_from_file_name(&file->canon));
Assert(result);
}
internal void
buffer_unbind_file(System_Functions *system, Working_Set *working_set, Editing_File *file){
Assert(file->unique_name.name_size == 0);
Assert(file->canon.name_size != 0);
working_set_canon_remove(working_set, string_from_file_name(&file->canon));
file->canon.name_size = 0;
}
internal b32
buffer_name_has_conflict(Working_Set *working_set, String_Const_u8 base_name){
b32 hit_conflict = false;
Node *used_nodes = &working_set->active_file_sentinel;
for (Node *node = used_nodes->next;
node != used_nodes;
node = node->next){
Editing_File *file_ptr = CastFromMember(Editing_File, main_chain_node, node);
if (file_is_ready(file_ptr) &&
string_match(base_name, string_from_file_name(&file_ptr->unique_name))){
hit_conflict = true;
break;
}
}
return(hit_conflict);
}
internal void
buffer_resolve_name_low_level(Arena *scratch, Working_Set *working_set, Editing_File_Name *name, String_Const_u8 base_name){
umem size = base_name.size;
size = clamp_top(size, sizeof(name->name_space));
block_copy(name->name_space, base_name.str, size);
String_u8 string = Su8(name->name_space, size, sizeof(name->name_space));
umem original_size = string.size;
u64 file_x = 0;
for (b32 hit_conflict = true; hit_conflict;){
hit_conflict = buffer_name_has_conflict(working_set, string.string);
if (hit_conflict){
file_x += 1;
string.size = original_size;
Temp_Memory temp = begin_temp(scratch);
String_Const_u8 int_str = string_from_integer(scratch, file_x, 10);
string_append(&string, string_u8_litexpr(" ("));
string_append(&string, int_str);
string_append(&string, string_u8_litexpr(")"));
end_temp(temp);
}
}
name->name_size = string.size;
}
internal void
buffer_bind_name_low_level(Arena *scratch, Heap *heap, Working_Set *working_set, Editing_File *file, String_Const_u8 base_name, String_Const_u8 name){
Assert(file->base_name.name_size == 0);
Assert(file->unique_name.name_size == 0);
Editing_File_Name new_name = {};
buffer_resolve_name_low_level(scratch, working_set, &new_name, name);
{
umem size = base_name.size;
size = clamp_top(size, sizeof(file->base_name.name_space));
block_copy(file->base_name.name_space, base_name.str, size);
file->base_name.name_size = size;
}
{
umem size = new_name.name_size;
block_copy(file->unique_name.name_space, new_name.name_space, size);
file->unique_name.name_size = size;
}
b32 result = working_set_add_name(heap, working_set, file, string_from_file_name(&file->unique_name));
Assert(result);
}
internal void
buffer_unbind_name_low_level(Working_Set *working_set, Editing_File *file){
Assert(file->base_name.name_size != 0);
Assert(file->unique_name.name_size != 0);
working_set_remove_name(working_set, string_from_file_name(&file->unique_name));
file->base_name.name_size = 0;
file->unique_name.name_size = 0;
}
internal void
buffer_bind_name(Models *models, Heap *heap, Arena *scratch, Working_Set *working_set, Editing_File *file, String_Const_u8 base_name){
Temp_Memory temp = begin_temp(scratch);
// List of conflict files.
struct Node_Ptr{
Node_Ptr *next;
Editing_File *file_ptr;
};
Node_Ptr *conflict_first = 0;
Node_Ptr *conflict_last = 0;
i32 conflict_count = 0;
{
Node_Ptr *node = push_array(scratch, Node_Ptr, 1);
sll_queue_push(conflict_first, conflict_last, node);
node->file_ptr = file;
conflict_count += 1;
}
Node *used_nodes = &working_set->active_file_sentinel;
for (Node *node = used_nodes->next;
node != used_nodes;
node = node->next){
Editing_File *file_ptr = CastFromMember(Editing_File, main_chain_node, node);
if (file_is_ready(file_ptr) &&
string_match(base_name, string_from_file_name(&file_ptr->base_name))){
Node_Ptr *new_node = push_array(scratch, Node_Ptr, 1);
sll_queue_push(conflict_first, conflict_last, new_node);
new_node->file_ptr = file_ptr;
conflict_count += 1;
}
}
// Fill conflict array.
Buffer_Name_Conflict_Entry *conflicts = push_array(scratch, Buffer_Name_Conflict_Entry, conflict_count);
{
i32 i = 0;
for (Node_Ptr *node = conflict_first;
node != 0;
node = node->next, i += 1){
Editing_File *file_ptr = node->file_ptr;
Buffer_Name_Conflict_Entry *entry = &conflicts[i];
entry->buffer_id = file_ptr->id;
entry->file_name = push_string_copy(scratch, string_from_file_name(&file_ptr->canon));
entry->base_name = push_string_copy(scratch, base_name);
String_Const_u8 b = base_name;
if (i > 0){
b = string_from_file_name(&file_ptr->unique_name);
}
umem unique_name_capacity = 256;
u8 *unique_name_buffer = push_array(scratch, u8, unique_name_capacity);
Assert(b.size <= unique_name_capacity);
block_copy(unique_name_buffer, b.str, b.size);
entry->unique_name_in_out = unique_name_buffer;
entry->unique_name_len_in_out = b.size;
entry->unique_name_capacity = unique_name_capacity;
}
}
// Get user's resolution data.
if (models->buffer_name_resolver != 0){
models->buffer_name_resolver(&models->app_links, conflicts, conflict_count);
}
// Re-bind all of the files
{
i32 i = 0;
for (Node_Ptr *node = conflict_first;
node != 0;
node = node->next, i += 1){
Editing_File *file_ptr = node->file_ptr;
if (file_ptr->unique_name.name_size > 0){
buffer_unbind_name_low_level(working_set, file_ptr);
}
}
}
{
i32 i = 0;
for (Node_Ptr *node = conflict_first;
node != 0;
node = node->next, i += 1){
Editing_File *file_ptr = node->file_ptr;
Buffer_Name_Conflict_Entry *entry = &conflicts[i];
String_Const_u8 unique_name = SCu8(entry->unique_name_in_out, entry->unique_name_len_in_out);
buffer_bind_name_low_level(scratch, heap, working_set, file_ptr, base_name, unique_name);
}
}
end_temp(temp);
}
////////////////////////////////
internal void
file_touch(Working_Set *working_set, Editing_File *file){
Assert(file != 0);
dll_remove(&file->touch_node);
dll_insert(&working_set->touch_order_sentinel, &file->touch_node);
}
internal Editing_File*
file_get_next(Working_Set *working_set, Editing_File *file){
if (file != 0){
Node *node = file->touch_node.next;
file = CastFromMember(Editing_File, touch_node, node);
if (node == &working_set->touch_order_sentinel){
file = 0;
}
}
else{
if (working_set->active_file_count > 0){
Node *node = working_set->touch_order_sentinel.next;
file = CastFromMember(Editing_File, touch_node, node);
}
}
return(file);
}
internal void
file_mark_edit_finished(Working_Set *working_set, Editing_File *file){
// TODO(allen): do(propogate do_not_mark_edits down the edit pipeline to here)
// This current method only works for synchronous calls, asynchronous calls
// will get the wrong do_not_mark_edits value.
if (!working_set->do_not_mark_edits){
if (!file->edit_finished_marked){
file->edit_finished_marked = true;
dll_insert_back(&working_set->edit_finished_sentinel,
&file->edit_finished_mark_node);
working_set->edit_finished_count += 1;
}
}
}
internal b32
file_unmark_edit_finished(Working_Set *working_set, Editing_File *file){
b32 result = false;
if (!working_set->do_not_mark_edits){
if (file->edit_finished_marked){
file->edit_finished_marked = false;
dll_remove(&file->edit_finished_mark_node);
working_set->edit_finished_count -= 1;
block_zero_struct(&file->edit_finished_mark_node);
result = true;
}
}
return(result);
}
////////////////////////////////
internal Editing_File*
imp_get_file(Models *models, Buffer_ID buffer_id){
Working_Set *working_set = &models->working_set;
Editing_File *file = working_set_get_file(working_set, buffer_id);
if (file != 0 && !file_is_ready(file)){
file = 0;
}
return(file);
}
// BOTTOM
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