From 40e07e03f23c279dea1f13cacccff8eb79475fd1 Mon Sep 17 00:00:00 2001
From: Aryadev Chavali <aryadev@aryadevchavali.com>
Date: Thu, 27 Nov 2025 01:42:24 +0000
Subject: [PATCH] Add mutexes to state for the queue and the allocator

Our threads need to negotiate access and mutation to the two
resources - we don't want them treading on each others toes when
generating new child nodes /or/ when trying to remove/add work to the
queue.  The former situation is particularly worrisome due to how weak
the indexing system is with the allocator.
---
 src/state.hpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/state.hpp b/src/state.hpp
index 7850659..00aba81 100644
--- a/src/state.hpp
+++ b/src/state.hpp
@@ -8,6 +8,7 @@
 #ifndef STATE_HPP
 #define STATE_HPP
 
+#include <mutex>
 #include <queue>
 
 #include "base.hpp"
@@ -20,6 +21,9 @@ namespace cw::state
     cw::node::NodeAllocator allocator;
     std::queue<u64> queue;
 
+    std::mutex mutex_queue;
+    std::mutex mutex_allocator;
+
     State(void);
   };