mirror of
https://github.com/kovidgoyal/kitty
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35946f9386
Store multi cell data in the CPUCell rather than in TextCache. This sends the CPUCell size back to 12 but in benchmarks ASCII performance is untouched and Unicode performace goes back to what it was before multicell
59 lines
2.2 KiB
C
59 lines
2.2 KiB
C
/*
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* text-cache.h
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* Copyright (C) 2024 Kovid Goyal <kovid at kovidgoyal.net>
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*
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* Distributed under terms of the GPL3 license.
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*/
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#pragma once
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#include "data-types.h"
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typedef struct ListOfChars {
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char_type *chars;
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size_t count, capacity;
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} ListOfChars;
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#define LIST_OF_CHARS_STACK_SIZE 4
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static inline void cleanup_list_of_chars(ListOfChars *lc) { if (lc->capacity > LIST_OF_CHARS_STACK_SIZE) free(lc->chars); }
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#define RAII_ListOfChars(name) char_type name##lcbuf[LIST_OF_CHARS_STACK_SIZE]; __attribute__((cleanup(cleanup_list_of_chars))) ListOfChars name = {.chars=name##lcbuf, .capacity = LIST_OF_CHARS_STACK_SIZE};
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static inline ListOfChars* alloc_list_of_chars(void) {
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ListOfChars *ans = calloc(1, sizeof(ListOfChars));
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if (ans) {
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ans->capacity = LIST_OF_CHARS_STACK_SIZE * 2;
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ans->chars = malloc(ans->capacity * sizeof(ans->chars[0]));
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if (!ans->chars) { free(ans); ans = NULL; }
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}
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return ans;
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}
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static inline void
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ensure_space_for_chars(ListOfChars *lc, size_t count) {
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if (lc->capacity >= count) return;
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if (lc->capacity > LIST_OF_CHARS_STACK_SIZE) {
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ensure_space_for(lc, chars, char_type, count, capacity, count, false);
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} else {
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lc->capacity = count + LIST_OF_CHARS_STACK_SIZE;
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void *chars = malloc(lc->capacity * sizeof(lc->chars[0]));
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if (!chars) fatal("Out of memory allocating LCChars char space");
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memcpy(chars, lc->chars, LIST_OF_CHARS_STACK_SIZE * sizeof(lc->chars[0]));
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lc->chars = chars;
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}
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}
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#ifndef TEXT_CACHE_IMPLEMENTATION
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typedef struct {int x; } *TextCache;
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#endif
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TextCache* tc_alloc(void);
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TextCache* tc_incref(TextCache *self);
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TextCache* tc_decref(TextCache *self);
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void tc_clear(TextCache *ans);
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void tc_chars_at_index(const TextCache *self, char_type idx, ListOfChars *ans);
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unsigned tc_chars_at_index_ansi(const TextCache *self, char_type idx, ANSIBuf *output);
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char_type tc_get_or_insert_chars(TextCache *self, const ListOfChars *chars);
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char_type tc_first_char_at_index(const TextCache *self, char_type idx);
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char_type tc_last_char_at_index(const TextCache *self, char_type idx);
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bool tc_chars_at_index_without_alloc(const TextCache *self, char_type idx, ListOfChars *ans);
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unsigned tc_num_codepoints(const TextCache *self, char_type idx);
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