perf-test: add command-line options, optional SF's perft compare

Makefile

@@ -129,6 +129,38 @@ DEPFLAGS   = -MMD -MP -MF $(DEPDIR)/$*.d
 ALL_CFLAGS  = $(DEPFLAGS) $(CPPFLAGS) $(CFLAGS)
 ALL_LDFLAGS = $(LDFLAGS) $(LIBS)
 
+##################################### Multi-targets
+# We can have an issue with Make's "-j" option, in some situations,
+# for example "make -j2 clean testing".
+# See https://stackoverflow.com/a/8496333/3079831
+
+# Check if job server supported:
+ifeq ($(filter jobserver, $(.FEATURES)),)
+# Job server not supported: sub-makes will only start one job unless
+# you specify a higher number here.  Here we use a MS Windows environment
+# variable specifying number of processors.
+JOBSARG := -j $(NUMBER_OF_PROCESSORS)
+else
+# Job server is supported; let GNU Make work as normal.
+JOBSARG :=
+endif
+
+# .FEATURES only works in GNU Make 3.81+.
+# If GNU make is older, assume job server support.
+ifneq ($(firstword $(sort 3.81 $(MAKE_VERSION))),3.81)
+# If you are using GNU Make < 3.81 that does not support job servers, you
+# might want to specify -jN parameter here instead.
+JOBSARG :=
+endif
+
+ifneq ($(words $(MAKECMDGOALS)),1)
+.NOTPARALLEL:
+# The "all" target is required in the list,
+# in case user invokes make with no targets.
+$(sort all $(MAKECMDGOALS)):
+	@$(MAKE) $(JOBSARG) -f $(firstword $(MAKEFILE_LIST)) $@
+else
+
 ##################################### General targets
 .PHONY: all compile clean cleanall
 
@@ -379,3 +411,6 @@ wtf:
 
 zob:
 	$(CC) $(LDFLAGS) $(CPPFLAGS) $(CFLAGS) $< $(LIBS) src/util.c -o util
+
+##################################### End of multi-targets
+endif

src/position.c

@@ -316,11 +316,11 @@ bitboard_t pos_king_blockers(const pos_t *pos, const color_t color, const bitboa
  * - total number of pieces > 16 or zero (per color)
  * - number of kings != 1 (per color)
  * - discrepancy between board and king (per color)
- * - discrepancy between piece bitboards and ALL_PIECES bitboards (per color)
  * - discrepancy between bitboards and board (per color)
  * - side-to-move already checking opponent king
  * - side-to-move in check more than twice
  * - kings distance is 1
+ * - TODO: discrepancy between piece bitboards and ALL_PIECES bitboards (per color)
  *
  * In case of errors, and @strict is true, @bug_on() is called, and program will
  * be terminated.
@@ -328,15 +328,20 @@ bitboard_t pos_king_blockers(const pos_t *pos, const color_t color, const bitboa
  * (eg after fen parsing), and with @strict == true otherwise (as we have some data
  * corruption).
  *
- * TODO: add more checks:
- * - kings attacking each other
- *
  * @return: (if @strict is false) return true if check is ok, false otherwise.
  */
 bool pos_ok(const pos_t *pos, const bool strict)
 {
     int n, count = 0, bbcount = 0, error = 0;
 
+    /* force BUG_ON and WARN_ON */
+#   pragma push_macro("BUG_ON")
+#   pragma push_macro("WARN_ON")
+#   undef BUG_ON
+#   define BUG_ON
+#   undef WARN_ON
+#   define WARN_ON
+
     /* pawns on 1st ot 8th rank */
     error += warn_on((pos->bb[WHITE][PAWN] | pos->bb[BLACK][PAWN]) &
                      (RANK_1bb | RANK_8bb));
@@ -357,7 +362,7 @@ bool pos_ok(const pos_t *pos, const bool strict)
     }
     for (square_t sq = 0; sq < 64; ++sq) {
         piece_t piece = pos->board[sq];
-        __unused bitboard_t match;
+        bitboard_t match;
         if (piece == EMPTY)
             continue;
         color_t c = COLOR(piece);
@@ -366,18 +371,22 @@ bool pos_ok(const pos_t *pos, const bool strict)
         error += warn_on(!match);
         count++;
     }
-    /* occupied occupation is different from bitboards */
+    /* occupied board is different from bitboards */
     error += warn_on(count != bbcount);
     /* is opponent already in check ? */
     error += warn_on(pos_checkers(pos, OPPONENT(pos->turn)));
     /* is color to play in check more than twice ? */
-    error += warn_on(popcount64(pos_checkers(pos, OPPONENT(pos->turn))) > 2);
+    error += warn_on(popcount64(pos_checkers(pos, pos->turn)) > 2);
     /* kings distance is less than 2 */
     error += warn_on(sq_dist(pos->king[WHITE], pos->king[BLACK]) < 2);
 
-    if (strict)
+    if (strict) {
         bug_on(error);
+        /* not reached */
+    }
     return error? false: true;
+#   pragma pop_macro("WARN_ON")
+#   pragma pop_macro("BUG_ON")
 }
 
 /**

src/position.h

@@ -32,7 +32,7 @@ typedef struct __pos_s {
 
     /* data which cannot be recovered by move_undo (like castle_rights, ...),
      * or would be expensive to recover (checkers, ...)
-     * following data can be accessed either directly, either via "movesave"
+     * following data can be accessed either directly, either via "state"
      * structure name.
      * For example, pos->en_passant and pos->state.en_passant are the same.
      * This allows a memcpy on this data (to save/restore position state).
@@ -40,8 +40,8 @@ typedef struct __pos_s {
     struct_group_tagged(state_s, state,
                         square_t en_passant;
                         castle_rights_t castle;
-                        u16 clock_50;
-                        u16 plycount;             /* plies so far, start from 1 */
+                        int clock_50;
+                        int plycount;             /* plies so far, start from 1 */
                         piece_t captured;         /* only for move_undo */
                         bitboard_t checkers;      /* opponent checkers */
                         bitboard_t pinners;       /* opponent pinners */

test/common-test.h

@@ -29,9 +29,8 @@ struct fentest {
     char *fen;
 } fentest[] = {
     /*
-    { __LINE__.
-      ATTACK,
-      "checkers: ",
+    { __LINE__, 1,
+      "",
       ""
     },
     */

test/perft-test.c

@@ -222,31 +222,54 @@ static __unused void compare_moves(movelist_t *fish, movelist_t *me)
     printf("F(%2d): %s\nM(%2d): %s\n", n1, str1, n2, str2);
 }
 
+static int usage(char *prg)
+{
+    fprintf(stderr, "Usage: %s [-d depth] [-p pertf-modules] -n\n", prg);
+    return 1;
+}
 
 int main(int __unused ac, __unused char**av)
 {
     int i = 0, test_line;
-    u64 sf_count, my_count;
+    u64 sf_count = 0, my_count;
     char *fen;
     pos_t *pos, *savepos, *fishpos = pos_new();
     movelist_t fishmoves;
     //move_t move;
-    FILE *outfd;
+    FILE *outfd = NULL;
     s64 ms1 = 0, ms1_total = 0;
     s64 ms2 = 0, ms2_total = 0;
 
-    int depth = 6, run = 3;
+    int opt, depth = 6, run = 3;
+    bool sf_run = true;
 
-    if (ac > 1)
-        depth = atoi(av[1]);
-    if (ac > 2)
-        run =  atoi(av[2]) & 3;
-    printf("depth = %d run=%d\n", depth, run);
+    while ((opt = getopt(ac, av, "nd:p:")) != -1) {
+        switch (opt) {
+            case 'd':
+                depth = atoi(optarg);
+                break;
+            case 'p': /* 1 or 2 */
+                run = atoi(optarg);
+                break;
+            case 'n':
+                sf_run = false;
+                break;
+            default:
+                    return usage(*av);
+        }
+    }
+    //if (ac > 1)
+    //    depth = atoi(av[1]);
+    //if (ac > 2)
+    //    run =  atoi(av[2]) & 3;
+    printf("depth = %d run = %x sf = %s\n", depth, run, sf_run? "true": "false");
 
     if (!run)
         exit(0);
     setlocale(LC_NUMERIC, "");
     setlinebuf(stdout);                           /* line-buffered stdout */
+
+    if (sf_run)
         outfd = open_stockfish();
 
     bitboard_init();
@@ -259,7 +282,9 @@ int main(int __unused ac, __unused char**av)
             printf("wrong fen %d: [%s]\n", i, fen);
             continue;
         }
+        if (sf_run)
             sf_count = send_stockfish_fen(outfd, fishpos, &fishmoves, fen, depth);
+
         savepos = pos_dup(pos);
 
         if (run & 1) {
@@ -268,7 +293,7 @@ int main(int __unused ac, __unused char**av)
             ms1 = clock_elapsed_ms(&clock);
             ms1_total += ms1;
 
-            if (sf_count == my_count) {
+            if (!sf_run || sf_count == my_count) {
                 printf("pt1 OK : line=%3d perft=%'lu %'ldms lps=%'lu \"%s\"\n",
                        test_line, my_count, ms1,
                        ms1? my_count*1000l/ms1: 0,
@@ -285,7 +310,7 @@ int main(int __unused ac, __unused char**av)
             ms2 = clock_elapsed_ms(&clock);
             ms2_total += ms2;
 
-            if (sf_count == my_count) {
+            if (!sf_run || sf_count == my_count) {
                 printf("pt2 OK : line=%3d perft=%'lu %'ldms lps=%'lu \"%s\"\n",
                        test_line, my_count, ms2,
                        ms2? my_count*1000l/ms2: 0,