From a854e4cfa450590753171fbbe4dde8da4f504abd Mon Sep 17 00:00:00 2001
From: spl3g <spleefer6@yandex.ru>
Date: Tue, 11 Mar 2025 22:37:43 +0300
Subject: Move everything to the lib folder

---
 arena.h | 108 ----------------------------------------------------------------
 1 file changed, 108 deletions(-)
 delete mode 100644 arena.h

(limited to 'arena.h')

diff --git a/arena.h b/arena.h
deleted file mode 100644
index c99fc97..0000000
--- a/arena.h
+++ /dev/null
@@ -1,108 +0,0 @@
-#ifndef ARENA_H_
-#define ARENA_H_
-
-#include <stdlib.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <assert.h>
-
-typedef struct region region;
-
-struct region {
-  region *next;
-  size_t cap;
-  size_t len;
-  uintptr_t data[];
-};
-
-typedef struct {
-  region *beg;
-  region *end;
-} arena;
-
-void *arena_alloc(arena *a, size_t size);
-void arena_free(arena *a);
-void grow_da(void *slice, size_t size, arena *arena);
-
-
-#define new(a, t, c) (t *)arena_alloc(a, sizeof(t)*c)
-
-#define ARENA_REGION_DEFAULT_CAPACITY (8*1024);
-
-// from nullprogram
-#define push(slice, arena) \
-  ((slice)->len >= (slice)->cap \
-	? grow(slice, sizeof(*(slice)->data), arena), \
-	  (slice)->data + (slice)->len++ \
-	: (slice)->data + (slice)->len++)
-
-#endif //ARENA_H_
-
-#ifdef ARENA_IMPLEMENTATION
-
-region *new_region(size_t cap) {
-  size_t size_bytes = sizeof(region) + sizeof(uintptr_t)*cap;
-  region *r = (region *)malloc(size_bytes);
-  assert(r);
-  r->next = NULL;
-  r->len = 0;
-  r->cap = cap;
-  return r;
-}
-
-void *arena_alloc(arena *a, size_t size_bytes) {
-  size_t size = (size_bytes + sizeof(uintptr_t)-1)/sizeof(uintptr_t);
-  
-  if (a->end == NULL) {
-	assert(a->beg == NULL);
-	size_t capacity = ARENA_REGION_DEFAULT_CAPACITY;
-	if (capacity < size) capacity = size;
-	a->beg = new_region(capacity);
-	a->end = a->beg;
-  }
-
-  while (a->end->len + size < a->end->cap && a->end->next != NULL) {
-	a->end = a->end->next;
-  }
-  
-  if (a->end->len + size > a->end->cap) {
-	size_t capacity = ARENA_REGION_DEFAULT_CAPACITY;
-	if (capacity < size) capacity = size;
-	a->beg = new_region(capacity);
-	a->end->next = new_region(capacity);
-	a->end = a->end->next;
-  }
-
-  void *p = &a->end->data[a->end->len];
-  a->end->len += size;
-  return memset(p, 0, size);
-}
-
-void arena_free(arena *a) {
-  region *r = a->beg;
-  while (r != NULL) {
-	region *r0 = r;
-	r = r0->next;
-	free(r0);
-  }
-}
-
-void grow(void *slice, size_t size, arena *arena) {
-  struct {
-	void *data;
-	size_t len;
-	size_t cap;
-  } replica;
-  memcpy(&replica, slice, sizeof(replica));
-
-  replica.cap = replica.cap ? replica.cap : 1;
-  void *data = arena_alloc(arena, size*2*replica.cap);
-  replica.cap *= 2;
-  if (replica.len) {
-	memcpy(data, replica.data, size*replica.len);
-  }
-  replica.data = data;
-
-  memcpy(slice, &replica, sizeof(replica));
-}
-#endif // ARENA_IMPLEMENTATION
-- 
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