1 files changed, 46 insertions, 4 deletions

diff --git a/include/engine/threads.h b/include/engine/threads.h
index 4815a4c..b5f2163 100644
--- a/include/engine/threads.h
+++ b/include/engine/threads.h
@@ -5,10 +5,43 @@
 #include <stdatomic.h>
 
 #include "bitboard.h"
+#include "engine/ttable.h"
 #include "ipc/engine_message.h"
 #include "ipc/go_args.h"
 
-struct thread_args {
+enum { SPLITPOINT_STATE_FREE, SPLITPOINT_STATE_ACTIVE };
+enum { NODE_PV, NODE_CUT, NODE_ALL };
+typedef struct split_point {
+  atomic_int state;
+  atomic_int next_move_idx;
+  atomic_int alpha, beta;
+  atomic_int best_score;
+  atomic_int workers;
+  move_t best_score;
+
+  struct split_point *parent;
+  int ply;
+  int node_type;
+  int confidence;
+  position_t position_snapshot;
+  moves_t moves;
+} split_point_t;
+
+struct child_thread_args {
+  // signal sent by threads manager
+  atomic_int stop;
+
+  // signal sent by thread
+  atomic_int finished;
+
+  int id;
+  go_args_t *go_args;
+
+  position_t position;
+  int sp_stack;
+  int 
+};
+struct root_thread_args {
   // signal sent by threads manager
   atomic_int stop;
 
@@ -21,9 +54,14 @@ struct thread_args {
   engine_message_handler_t *message;
 };
 
+typedef union {
+  struct child_thread_args child_thread_args;
+  struct root_thread_args root_thread_args;
+} thread_args_t;
+
 struct threads {
   pthread_t *threads;
-  struct thread_args *args;
+  thread_args_t *args;
   size_t count;
   size_t capacity;
 
@@ -31,11 +69,14 @@ struct threads {
   engine_messages_t *engine_messages;
   go_args_t *go_args;
   position_t *position;
+
+  ttable_t ttable;
+  void* split_point_pool;
 };
 
 #ifdef ENGINE_THREADS_INTERNAL
 void __threads_args_init(
-  struct thread_args* args,
+  thread_args_t* args,
   struct threads *handler,
   int i
 );
@@ -48,6 +89,7 @@ bool threads_go_loop(struct threads *handler);
 bool threads_all_done(struct threads *handler);
 void threads_cleanup(struct threads *handler);
 
-void *engine_thread(void *args);
+void *child_thread(void *args);
+void *root_thread(void *args);
 
 #endif // ENGINE_THREADS_H