🦈 IMP: Switch to BS Thread Pool Library

--- STC ---
ELO   | 0.96 +- 2.62 (95%)
SPRT  | 10.0+0.10s Threads=1 Hash=16MB
LLR   | 2.97 (-2.94, 2.94) [-3.00, 1.00]
GAMES | N: 34984 W: 9105 L: 9008 D: 16871

--- LTC ---
ELO   | 0.96 +- 2.52 (95%)
SPRT  | 60.0+0.60s Threads=1 Hash=256MB
LLR   | 3.02 (-2.94, 2.94) [-3.00, 1.00]
GAMES | N: 35464 W: 8669 L: 8571 D: 18224

Bench: 7025779

CMakeLists.txt

@@ -64,16 +64,7 @@ endforeach()
 
 include(${CPM_DOWNLOAD_LOCATION})
 
-CPMAddPackage("gh:TheBlackPlague/MantaRay#6911ba4b35fed878ba31361ca33020073adf4543")
-CPMAddPackage(
-        NAME thread-pool
-        GITHUB_REPOSITORY DeveloperPaul123/thread-pool
-        GIT_TAG 0.5.1
-        OPTIONS
-        "TP_BUILD_TESTS OFF"
-        "TP_BUILD_BENCHMARKS OFF"
-        "TP_BUILD_EXAMPLES OFF"
-)
+CPMAddPackage("gh:TheBlackPlague/MantaRay#4038386a746ae65881e7d1f02673e1805f729cc9")
 
 include(BinaryResource.cmake)
 
@@ -94,7 +85,8 @@ file(GLOB StockDoryEngineType
         "src/Engine/*.h")
 
 file(GLOB StockDoryExternalType
-        "src/External/*.h")
+        "src/External/*.h"
+        "src/External/thread_pool.hpp")
 
 file(GLOB StockDoryFrontendType
         "src/Terminal/UI/*.h"
@@ -107,4 +99,8 @@ add_executable(StockDory src/Terminal/main.cpp
 
 target_include_directories(StockDory PRIVATE "${CMAKE_CURRENT_BINARY_DIR}")
 
-target_link_libraries(StockDory MantaRay dp::thread-pool)
+target_link_libraries(StockDory MantaRay)
+
+if(NOT WIN32)
+    target_link_libraries(StockDory pthread)
+endif()

src/Backend/ThreadPool.h

@@ -6,12 +6,12 @@
 #ifndef STOCKDORY_THREADPOOL_H
 #define STOCKDORY_THREADPOOL_H
 
-#include <thread_pool/thread_pool.h>
+#include "../External/thread_pool.hpp"
 
 namespace StockDory
 {
 
-    dp::thread_pool<> ThreadPool;
+    BS::thread_pool ThreadPool;
 
 } // StockDory
 

src/Backend/TranspositionTable.h

@@ -10,7 +10,9 @@
 #include <algorithm>
 #include <execution>
 
+#ifdef __x86_64__
 #include <xmmintrin.h>
+#endif
 
 #include "Type/Zobrist.h"
 
@@ -57,7 +59,13 @@ namespace StockDory
 
             inline void Prefetch(const ZobristHash hash) const
             {
+#ifdef __x86_64__
                 _mm_prefetch(reinterpret_cast<const char*>(&Internal[fastrange64(hash, Count)]), _MM_HINT_T0);
+#else
+#ifdef __aarch64__
+                __builtin_prefetch(reinterpret_cast<const char*>(&Internal[fastrange64(hash, Count)]), 0, 3);
+#endif
+#endif
             }
 
             [[nodiscard]]

src/Backend/Type/BitBoard.h

@@ -67,14 +67,16 @@ class BitBoardIterator
             return static_cast<Square>(i);
         }
 
-        inline std::vector<Square> Values()
+        template<size_t N>
+        inline uint8_t ToArray(std::array<Square, N>& array)
         {
-            uint8_t count = Count(BB);
-            std::vector<Square> v (count);
+            const uint8_t count = Count(BB);
 
-            for (uint8_t i = 0; i < count; i++) v[i] = Value();
+            assert(N >= count);
 
-            return v;
+            for (uint8_t i = 0; i < count; i++) array[i] = Value();
+
+            return count;
         }
 
 };

src/Engine/Time/TimeManager.h

@@ -35,10 +35,6 @@ namespace StockDory
             constexpr static uint8_t IncrementPartitionNumerator   = 3;
             constexpr static uint8_t IncrementPartitionDenominator = 4;
 
-            constexpr static uint8_t PieceCountBase        = 32;
-            constexpr static uint8_t PieceCountNumerator   =  3;
-            constexpr static uint8_t PieceCountDenominator =  5;
-
             constexpr static uint64_t MoveInstantTime      = 500;
 
             constexpr static KillerTable  DummyKTable;