Second iteration of mining cache reimplementation.

- Reimplement ar_chunk_cache -> ar_mining_cache module
- Rework cache reservation logic
- Rework ar_mining_io workflow
- Rework cache cleanup routines
- Remove cache cycling

.github/workflows/test.yml

@@ -221,7 +221,6 @@ jobs:
             ar_block,
             ar_block_cache,
             ar_chain_stats,
-            ar_chunk_cache,
             ar_chunk_copy,
             ar_chunk_storage,
             ar_data_sync_worker_master,
@@ -236,6 +235,7 @@ jobs:
             ar_join,
             ar_kv,
             ar_merkle,
+            ar_mining_cache,
             ar_mining_server,
             ar_mining_stats,
             ar_node,

apps/arweave/include/ar_mining_cache.hrl

@@ -0,0 +1,25 @@
+-ifndef(AR_MINING_CACHE_HRL).
+-define(AR_MINING_CACHE_HRL, true).
+
+-record(ar_mining_cache_value, {
+  chunk1 :: binary() | undefined,
+  chunk2 :: binary() | undefined,
+  chunk2_missing :: boolean(),
+  h1 :: binary() | undefined,
+  h2 :: binary() | undefined
+}).
+
+-record(ar_mining_cache_session, {
+  mining_cache = #{} :: #{term() => #ar_mining_cache_value{}},
+  mining_cache_size_bytes = 0 :: non_neg_integer(),
+  reserved_mining_cache_bytes = 0 :: non_neg_integer()
+}).
+
+
+-record(ar_mining_cache, {
+  mining_cache_sessions = #{} :: #{term() => #ar_mining_cache_session{}},
+  mining_cache_sessions_queue = queue:new() :: queue:queue(),
+  mining_cache_limit_bytes = 0 :: non_neg_integer()
+}).
+
+-endif.