olemorud/chess-engine
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Performance improvements

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This commit is contained in:
Ole Morud
2026-01-07 15:15:18 +01:00
parent 716527fa8f
commit 5a5a392c8b
12 changed files with 385 additions and 219 deletions
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45
tests.c
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@@ -1,5 +1,8 @@
#define USE_PRINTF
#define FEATURE_STOPPABLE_SEARCH
#define FEATURE_USE_PRINTF
#undef NSTATS
#define _XOPEN_SOURCE 500
#include <unistd.h> /* usleep */
#include <pthread.h>
@@ -390,15 +393,15 @@ static void test_bishops(void)
}
struct timeout_params {
atomic_bool* x;
bool v;
struct searching_flag* x;
uint32_t v;
useconds_t us;
};
void* set_after_timeout(void* x)
{
struct timeout_params* p = x;
usleep(p->us);
*p->x = p->v;
searching_stop(p->x);
return NULL;
}
@@ -406,9 +409,11 @@ int main()
{
bool const print_threats = true;
printf("sizeof pos: %zu\n", sizeof (struct pos));
printf("sizeof tt: %zu\n", sizeof (struct tt));
printf("sizeof board: %zu\n", sizeof (struct board));
printf("sizeof pos: %zu\n", sizeof (struct pos));
printf("sizeof tt: %zu\n", sizeof (struct tt));
printf("sizeof board: %zu\n", sizeof (struct board));
printf("sizeof search_option: %zu\n", sizeof (struct search_option));
printf("sizeof all tt entries: %zu\n", (1<<26) * sizeof (struct search_option));
#if 0
test_rooks();
@@ -431,6 +436,7 @@ int main()
//board_load_fen_unsafe(b, "1n1q1rk1/r1p2P2/1p1pp2p/pB2P3/2P5/PPN5/6b1/3QK1NR b - - 0 1");
//board_load_fen_unsafe(b, "8/8/2kr4/6R1/4K3/6P1/8/8 b - - 0 1");
//board_load_fen_unsafe(b, "8/8/5R2/8/2K3PP/1B2k3/8/8 b - - 1 4");
//board_load_fen_unsafe(b, "4r1k1/b1P1B3/P5pK/1p4P1/7q/8/4p3/1R6 w - - 1 54");
//board_print_fen(b->pos, stdout);
board_print(&b->pos, NULL, stdout, print_threats);
@@ -438,6 +444,7 @@ int main()
size_t move_count;
for (int turn = 0; turn < 200; ++turn) {
/*
move_count = 0;
all_pseudolegal_moves(&b->pos, MG_ALL, b->pos.moving_side, &move_count, moves);
@@ -448,10 +455,12 @@ int main()
board_print(&b->pos, NULL, stdout, print_threats);
break;
}
*/
pthread_t timer;
atomic_bool searching;
atomic_init(&searching, true);
struct searching_flag searching;
searching_start(&searching);
//atomic_init(&searching, 1);
#if 1
struct timeout_params timer_params = {
.x = &searching,
@@ -482,11 +491,18 @@ int main()
enum move_result const r = board_move(b, move);
/* illegal board state from an engine move (i.e. hanging king) means checkmate */
if (!board_is_legal(b)) {
printf("checkmate!\n");
break;
}
#if 1
board_print_fen(&b->pos, stdout);
tt_print_stats(&b->tt, stdout);
board_print(&b->pos, &move, stdout, print_threats);
fprintf(stderr, "board hist len: %zu\n", b->hist.length);
fprintf(stderr, "\n------------------------\n\n\n");
#endif
if (r == MR_STALEMATE) {
@@ -496,14 +512,13 @@ int main()
if (b->pos.pieces[SIDE_WHITE][PIECE_KING] == 0ULL) {
printf("white king gone!!\n");
exit(1);
}
if (b->pos.pieces[SIDE_BLACK][PIECE_KING] == 0ULL) {
printf("black king gone!!\n");
exit(1);
exit(EXIT_FAILURE);
}
//usleep(1000000);
if (b->pos.pieces[SIDE_BLACK][PIECE_KING] == 0ULL) {
printf("black king gone!!\n");
exit(EXIT_FAILURE);
}
}
return EXIT_SUCCESS;