Merge branch 'maint'

[gnushogi.git] / gnushogi / search.c

diff --git a/gnushogi/search.c b/gnushogi/search.c
index c1d8fd9..1c4bbf7 100644 (file)
--- a/gnushogi/search.c
+++ b/gnushogi/search.c
@@ -4,6 +4,7 @@
  * ----------------------------------------------------------------------
  * Copyright (c) 1993, 1994, 1995 Matthias Mutz
  * Copyright (c) 1999 Michael Vanier and the Free Software Foundation
+ * Copyright (c) 2008, 2013, 2014 Yann Dirson and the Free Software Foundation
  *
  * GNU SHOGI is based on GNU CHESS
  *
@@ -30,8 +31,6 @@
  */
 
 #include "gnushogi.h"
-#include <poll.h>
-#include <unistd.h>
 
 short background = 0;
 static short DepthBeyond;
@@ -182,7 +181,7 @@ SelectMove(short side, SelectMove_mode iop)
 #ifdef QUIETBACKGROUND
     if (!background)
 #endif /* QUIETBACKGROUND */
-        ShowResponseTime();
+        dsp->ShowResponseTime();
 
     ExtraTime = 0;
 
@@ -191,12 +190,12 @@ SelectMove(short side, SelectMove_mode iop)
 #ifdef QUIETBACKGROUND
     if (!background)
 #endif /* QUIETBACKGROUND */
-        ShowSidetoMove();
+        dsp->ShowSidetoMove();
 
 #ifdef QUIETBACKGROUND
     if (!background)
 #endif /* QUIETBACKGROUND */
-        SearchStartStuff(side);
+        dsp->SearchStartStuff(side);
 
 #ifdef HISTORY
     array_zero(history, sizeof_history);
@@ -260,7 +259,7 @@ SelectMove(short side, SelectMove_mode iop)
 
     if (flag.regularstart && Book)
     {
-        flag.timeout = bookflag = OpeningBook(&hint, side);
+        flag.timeout = bookflag = OpeningBook(&hint);
 
         if (TCflag)
             ResponseTime += ResponseTime;
@@ -306,7 +305,7 @@ SelectMove(short side, SelectMove_mode iop)
 # ifdef QUIETBACKGROUND
         if (!background)
 #endif /* QUIETBACKGROUND */
-            ShowDepth(' ');
+            dsp->ShowDepth(' ');
 
         /* search at this level returns score of PV */
         score = search(side, 1, Sdepth, alpha, beta, PrVar, &rpt);
@@ -322,7 +321,7 @@ SelectMove(short side, SelectMove_mode iop)
 #ifdef QUIETBACKGROUND
             if (!background)
 #endif /* QUIETBACKGROUND */
-                ShowDepth('-');
+                dsp->ShowDepth('-');
 
             if (TCflag && TCcount < MAXTCCOUNTR)
             {
@@ -344,7 +343,7 @@ SelectMove(short side, SelectMove_mode iop)
 #ifdef QUIETBACKGROUND
             if (!background)
 #endif /* QUIETBACKGROUND */
-                ShowDepth('+');
+                dsp->ShowDepth('+');
 
             score = search(side, 1, Sdepth, -(SCORE_LIMIT + 999),
                            (SCORE_LIMIT + 999), PrVar, &rpt);
@@ -397,7 +396,7 @@ SelectMove(short side, SelectMove_mode iop)
 #ifdef QUIETBACKGROUND
         if (!background)
 #endif /* QUIETBACKGROUND */
-            ShowResults(score, PrVar, '.');
+            dsp->ShowResults(score, PrVar, '.');
     }
 
     /********************** end of main loop ***************************/
@@ -409,7 +408,7 @@ SelectMove(short side, SelectMove_mode iop)
     if (rpt >= 3)
     {
         root->flags |= draw;
-        DRAW = CP[101];     /* Repetition */
+        DRAW = DRAW_REPETITION;
     }
     else
     {
@@ -421,7 +420,7 @@ SelectMove(short side, SelectMove_mode iop)
         if (GameCnt == MAXMOVES)
         {
             root->flags |= draw;
-            DRAW = CP[80];      /* Max Moves */
+            DRAW = DRAW_MAXMOVES;
         }
     }
 
@@ -454,7 +453,7 @@ SelectMove(short side, SelectMove_mode iop)
         ElapsedTime(COMPUTE_AND_INIT_MODE);
 
     /* update time control info */
-    OutputMove();
+    dsp->OutputMove();
 
     /* if mate set flag */
     if ((score == -(SCORE_LIMIT + 999) || score == (SCORE_LIMIT + 998)))
@@ -528,8 +527,6 @@ search(short side,
     short best = -(SCORE_LIMIT + 3000);
     short bestwidth = 0;
     short mustcut;
-    static struct pollfd pollfds[1] = { /* [0] = */ { /* .fd = */ STDIN_FILENO,
-                                                      /* .events = */ POLLIN } };
 
 #ifdef NULLMOVE
     short PVsave;
@@ -547,19 +544,6 @@ search(short side,
         {
             ElapsedTime(COMPUTE_MODE);
 
-            if(background) {
-                int cnt = poll(pollfds, sizeof(pollfds)/sizeof(pollfds[0]), 0);
-                if (cnt < 0) {
-                    perror("polling standard input");
-                    ExitShogi();
-                }
-                if (cnt) { /* if anything to read, or error occured */
-                    if (!flag.timeout)
-                        flag.back = true; /* previous: flag.timeout = true; */
-                    flag.bothsides = false;
-                }
-            }
-
             if (flag.back)
             {
                 flag.back = false;
@@ -597,7 +581,7 @@ search(short side,
 #ifdef QUIETBACKGROUND
             if (!background)
 #endif
-                ShowResponseTime();
+                dsp->ShowResponseTime();
         }
         else if (!TCflag && flag.musttimeout && Sdepth > MINDEPTH)
         {
@@ -727,7 +711,7 @@ search(short side,
                  && (ProbeFTable(side, depth, ply, &alpha, &beta, &score)
                      == true))
         {
-            PutInTTable(side, score, depth, ply, alpha, beta, PV);
+            PutInTTable(side, score, depth, ply, beta, PV);
             bstline[ply] = PV;
             bstline[ply + 1] = 0;
 
@@ -878,7 +862,6 @@ search(short side,
         nxtline[ply + 1] = 0;
 
         /* if at top level */
-#if !defined NOPOST
         if (ply == 1)
         {
 /* at the top update search status */
@@ -887,10 +870,9 @@ search(short side,
 #ifdef QUIETBACKGROUND
                 if (!background)
 #endif /* QUIETBACKGROUND */
-                    ShowCurrentMove(pnt, node->f, node->t);
+                    dsp->ShowCurrentMove(pnt, node->f, node->t);
             }
         }
-#endif
 
         if (!(node->flags & exact))
         {
@@ -928,7 +910,7 @@ search(short side,
                      && !ChkFlag[ply])))
             {
                 node->flags |= (draw | exact);
-                DRAW = CP[58];  /* Draw */
+                DRAW = DRAW_JUSTDRAW;
                 node->score = ((side == computer) ? contempt : -contempt);
             }
 
@@ -1001,15 +983,15 @@ search(short side,
                     {
                         if (best > beta)
                         {
-                            ShowResults(best, bstline, '+');
+                            dsp->ShowResults(best, bstline, '+');
                         }
                         else if (best < alpha)
                         {
-                            ShowResults(best, bstline, '-');
+                            dsp->ShowResults(best, bstline, '-');
                         }
                         else
                         {
-                            ShowResults (best, bstline, '&');
+                            dsp->ShowResults(best, bstline, '&');
                         }
                     }
 #ifdef QUIETBACKGROUND
@@ -1042,13 +1024,13 @@ search(short side,
     {
 #  ifdef HASHFILE /* MCV: warning: this confuses the formatter. */
         if (use_ttable
-            && PutInTTable(side, best, depth, ply, alpha, beta, mv)
+            && PutInTTable(side, best, depth, ply, beta, mv)
             && hashfile
             && (depth > HashDepth)
             && (GameCnt < HashMoveLimit))
 #  else
         if (use_ttable
-            && PutInTTable(side, best, depth, ply, alpha, beta, mv))
+            && PutInTTable(side, best, depth, ply, beta, mv))
 #  endif
         {
             PutInFTable(side, best, depth, ply,
@@ -1133,8 +1115,8 @@ UpdatePieceList(short side, short sq, UpdatePieceList_mode iop)
 
 /* Make or Unmake drop move. */
 
-void
-drop(short side, short piece, short f, short t, short iop)
+static void
+drop(short side, short piece, short t, short iop)
 {
     if (iop == 1)
     {
@@ -1302,7 +1284,7 @@ MakeMove(short side,
         *tempst = svalue[t];
 #endif
 
-        (void)drop(side, g->fpiece, f, t, 1);
+        (void)drop(side, g->fpiece, t, 1);
     }
     else
     {
@@ -1430,7 +1412,7 @@ UnmakeMove(short side,
 
     if (node->flags & dropmask)
     {
-        (void)drop(side, (node->flags & pmask), f, t, 2);
+        (void)drop(side, (node->flags & pmask), t, 2);
 
 #if !defined SAVE_SVALUE
         svalue[t] = *tempst;