From 444bfa2f41143aff7490e4fa21565947565b7d30 Mon Sep 17 00:00:00 2001
From: nasr <nsrddyn@gmail.com>
Date: Fri, 13 Mar 2026 22:31:21 +0100
Subject: cleanup: generalisation

---
 library/arena.c | 81 ---------------------------------------------------------
 1 file changed, 81 deletions(-)
 delete mode 100644 library/arena.c

(limited to 'library/arena.c')

diff --git a/library/arena.c b/library/arena.c
deleted file mode 100644
index 39711d5..0000000
--- a/library/arena.c
+++ /dev/null
@@ -1,81 +0,0 @@
-#include <assert.h>
-#include <dirent.h>
-#include <fcntl.h>
-#include <stdint.h>
-#include <string.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <unistd.h>
-
-#include "arena.h"
-
-mem_arena *
-arena_create(u64 capacity)
-{
-  mem_arena *arena = mmap(0, capacity, PROT_READ | PROT_WRITE | PROT_EXEC,
-    MAP_SHARED | MAP_ANONYMOUS, -1, 0);
-  if (arena == MAP_FAILED)
-  {
-    assert(0);
-  }
-
-  arena->capacity = capacity;
-  arena->pos = ARENA_BASE_POS;
-
-  return arena;
-}
-
-// make it a void pointer to allow implicit conversion
-void
-arena_destroy(mem_arena *arena)
-{
-  munmap(arena, arena->capacity);
-}
-
-void *
-arena_push(mem_arena *arena, u64 size, b32 non_zero)
-{
-  u64 pos_aligned = ALIGN_UP_POW2(arena->pos, ARENA_ALIGN);
-  u64 new_pos = pos_aligned + size;
-
-  if (new_pos > arena->capacity)
-  {
-    assert(0);
-    return NULL;
-  }
-
-  arena->pos = new_pos;
-  // cast to u8 to be able to do pointer arithemtic
-  u8 *out = (u8 *)arena + pos_aligned;
-
-  if (!non_zero)
-  {
-    memset(out, 0, size);
-  }
-  return out;
-}
-void
-arena_pop(mem_arena *arena, u64 size)
-{
-  size = MIN(size, arena->pos - ARENA_BASE_POS);
-  arena->pos -= size;
-}
-
-void
-arena_pop_to(mem_arena *arena, u64 pos)
-{
-  u64 size = pos < arena->pos ? arena->pos - pos : 0;
-  arena_pop(arena, size);
-}
-
-void
-arena_clear(mem_arena *arena)
-{
-  arena_pop_to(arena, ARENA_BASE_POS);
-}
-
-#define PUSH_STRUCT(arena, T) (T *)arena_push((arena), sizeof(T), 0)
-#define PUSH_STRUCT_NZ(arena, T) (T *)arena_push((arena), sizeof(T), 1)
-#define PUSH_ARRAY(arena, T, n) (T *)arena_push((arena), sizeof(T) * (n), 0)
-#define PUSH_ARRAY_NZ(arena, T, n) (T *)arena_push((arena), sizeof(T) * (n), 1)
-
-- 
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