From 9f254f0c7b03236be615b1235cf3fc765d6000ea Mon Sep 17 00:00:00 2001
From: 3gg <3gg@shellblade.net>
Date: Thu, 13 Jul 2023 08:22:18 -0700
Subject: Add mem allocator, remove listpool.

---
 listpool/src/listpool.c | 92 -------------------------------------------------
 1 file changed, 92 deletions(-)
 delete mode 100644 listpool/src/listpool.c

(limited to 'listpool/src/listpool.c')

diff --git a/listpool/src/listpool.c b/listpool/src/listpool.c
deleted file mode 100644
index 758062c..0000000
--- a/listpool/src/listpool.c
+++ /dev/null
@@ -1,92 +0,0 @@
-#include "listpool.h"
-
-#include <string.h>
-
-void listpool_make_(
-    listpool* pool, list* nodes, void* blocks, size_t num_blocks,
-    size_t block_size_bytes) {
-  assert(pool);
-  pool->block_size_bytes = block_size_bytes;
-  pool->num_blocks       = num_blocks;
-  pool->free             = &nodes[0];
-  pool->used             = 0;
-  pool->nodes            = nodes;
-  pool->blocks           = blocks;
-  list_make(nodes, num_blocks);
-  memset(blocks, 0, num_blocks * block_size_bytes);
-}
-
-void* listpool_alloc_(listpool* pool) {
-  assert(pool);
-  if (!pool->free) {
-    return 0;
-  }
-
-  const size_t index = pool->free - pool->nodes;
-  assert(index < pool->num_blocks);
-
-  list* free = pool->free;
-  pool->free = pool->free->next;
-
-  // pool->used is always the head of the used list, so prepend the new item to
-  // the list.
-  list* new_used = free;
-  new_used->prev = 0;
-  new_used->next = pool->used;
-  if (pool->used) {
-    pool->used->prev = new_used;
-  }
-  pool->used = new_used;
-
-  return pool->blocks + index * pool->block_size_bytes;
-}
-
-void listpool_free_(listpool* pool, void** block_ptr) {
-  assert(pool);
-  assert(block_ptr);
-
-  memset(*block_ptr, 0, pool->block_size_bytes);
-
-  const size_t index =
-      ((uint8_t*)*block_ptr - pool->blocks) / pool->block_size_bytes;
-  assert(index < pool->num_blocks);
-
-  list* item = &pool->nodes[index];
-
-  // We must remove the item from the used list first.
-  if (item->prev) {
-    item->prev->next = item->next;
-  }
-  if (item->next) {
-    item->next->prev = item->prev;
-  }
-  if (item == pool->used) {
-    pool->used = item->next;
-  }
-
-  // pool->free is always the head of the free list, so prepend the new item to
-  // the list. The item is now free to wire after removing it from the used
-  // list.
-  if (!pool->free) {
-    pool->free = item;
-  } else {
-    item->next       = pool->free;
-    pool->free->prev = item;
-    pool->free       = item;
-  }
-
-  *block_ptr = 0;
-}
-
-void* listpool_get_block_(const listpool* pool, size_t block_index) {
-  assert(pool);
-  assert(block_index < pool->num_blocks);
-  return pool->blocks + block_index * pool->block_size_bytes;
-}
-
-size_t listpool_get_block_index_(const listpool* pool, const void* block) {
-  assert(pool);
-  const size_t block_byte_index = (const uint8_t*)block - pool->blocks;
-  assert(block_byte_index % pool->block_size_bytes == 0);
-  return block_byte_index / pool->block_size_bytes;
-}
-- 
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