From a9c102298a269b772d44a5cf7de1678869eed4d9 Mon Sep 17 00:00:00 2001
From: Christoph Urlacher <christoph.urlacher@protonmail.com>
Date: Wed, 4 Mar 2026 20:45:25 +0100
Subject: [PATCH] enable/disable threadpool from cmake

---
 CMakeLists.txt     | 7 ++++++-
 flake.nix          | 2 ++
 include/config.hpp | 4 ++--
 src/main.cpp       | 4 ++--
 4 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 544c729..3ff816e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,6 +9,7 @@ if(POLICY CMP0167)
     cmake_policy(SET CMP0167 NEW)
 endif()
 
+option(DISABLE_THREADPOOL "Disable additional physics threads" OFF)
 option(DISABLE_BACKWARD "Disable backward stacktrace printer" OFF)
 option(DISABLE_TRACY "Disable the Tracy profiler client" OFF)
 option(DISABLE_TESTS "Disable building tests" OFF)
@@ -41,6 +42,10 @@ if(WIN32)
     list(APPEND LIBS opengl32 gdi32 winmm)
 endif()
 
+if(NOT DISABLE_THREADPOOL)
+    list(APPEND FLAGS THREADPOOL)
+endif()
+
 if(NOT DISABLE_BACKWARD)
     find_package(Backward REQUIRED)
 
@@ -127,4 +132,4 @@ if(supported)
     set_property(TARGET masssprings PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
 else()
     message(STATUS "IPO / LTO not supported")
-endif()
\ No newline at end of file
+endif()
diff --git a/flake.nix b/flake.nix
index 049df25..f736cb0 100644
--- a/flake.nix
+++ b/flake.nix
@@ -254,6 +254,7 @@ rec {
           ];
 
           cmakeFlags = [
+            "-DDISABLE_THREADPOOL=Off"
             "-DDISABLE_TRACY=On"
             "-DDISABLE_BACKWARD=On"
             "-DDISABLE_TESTS=On"
@@ -307,6 +308,7 @@ rec {
 
           cmakeFlags = [
             "-DCMAKE_SYSTEM_NAME=Windows"
+            "-DDISABLE_THREADPOOL=Off"
             "-DDISABLE_TRACY=On"
             "-DDISABLE_BACKWARD=On"
             "-DDISABLE_TESTS=On"
diff --git a/include/config.hpp b/include/config.hpp
index c718a48..aa0ca0b 100644
--- a/include/config.hpp
+++ b/include/config.hpp
@@ -3,12 +3,12 @@
 
 #include <raylib.h>
 
-#define THREADPOOL // Enable physics threadpool
 
 // TODO: Using the octree from the last frame completely breaks the physics :/
 // #define ASYNC_OCTREE
 
 // Gets set by CMake
+// #define THREADPOOL // Enable physics threadpool
 // #define BACKWARD   // Enable pretty stack traces
 // #define TRACY      // Enable tracy profiling support
 
@@ -93,4 +93,4 @@ constexpr Color BLOCK_COLOR = DARKBLUE;
 constexpr Color TARGET_BLOCK_COLOR = RED;
 constexpr Color WALL_COLOR = BLACK;
 
-#endif
\ No newline at end of file
+#endif
diff --git a/src/main.cpp b/src/main.cpp
index 8b13b5c..4fd3b10 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -38,7 +38,7 @@ auto set_pool_thread_name(size_t idx) -> void
     BS::this_thread::set_os_thread_name(std::format("worker-{}", idx));
 }
 
-BS::thread_pool<> threads(std::thread::hardware_concurrency() - 2, set_pool_thread_name);
+BS::thread_pool<> threads(std::thread::hardware_concurrency(), set_pool_thread_name);
 constexpr std::optional<BS::thread_pool<>* const> thread_pool = &threads;
 #else
 constexpr std::optional<BS::thread_pool<>* const> thread_pool = std::nullopt;
@@ -341,4 +341,4 @@ auto main(const int argc, char* argv[]) -> int
     };
 
     return 1;
-}
\ No newline at end of file
+}