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|
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include "chess.h"
#include "data.h"
/* last modified 05/06/98 */
/*
********************************************************************************
* *
* Interrupt() is used to read in a move when the operator types something *
* while a search is in progress (during pondering as one example.) this *
* routine reads in a command (move) and then makes two attempts to use this *
* input: (1) call Option() to see if the command can be executed; (2) try *
* InputMove() to see if this input is a legal move; if so, and we are *
* pondering see if it matches the move we are pondering. *
* *
********************************************************************************
*/
void Interrupt(int ply)
{
int temp, *mvp, left, readstat, result, time_used;
int save_move_number;
TREE *tree=local[0];
static int busy=0;
/*
----------------------------------------------------------
| |
| if another thread is already reading the input, this |
| thread can exit now. |
| |
----------------------------------------------------------
*/
#if defined(SMP)
Lock(lock_io);
if (busy==1) {
UnLock(lock_io);
return;
}
busy=1;
UnLock(lock_io);
#endif
if (abort_search) {
busy=0;
return;
}
/*
----------------------------------------------------------
| |
| if trying to find a move to ponder, and the operator |
| types a command, exit a.s.a.p. |
| |
----------------------------------------------------------
*/
if (puzzling)
abort_search=1;
/*
----------------------------------------------------------
| |
| first check to see if this is a command by calling |
| Option(). Option() will return a 0 if it didn't |
| recognize the command; otherwise it returns a 1 if |
| the command was executed, or a 2 if we need to abort |
| the search to execute the command. |
| |
----------------------------------------------------------
*/
else do {
readstat=Read(0,buffer);
if (readstat <= 0) break;
nargs=ReadParse(buffer,args," ;");
if (nargs == 0) {
Print(128,"ok.\n");
break;
}
if (strcmp(args[0],".")) {
save_move_number=move_number;
if (!wtm) move_number--;
if (wtm)
Print(128,"White(%d): %s\n",move_number,buffer);
else
Print(128,"Black(%d): %s\n",move_number,buffer);
move_number=save_move_number;
}
/*
----------------------------------------------------------
| |
| "." command displays status of current search. |
| |
----------------------------------------------------------
*/
if (!strcmp(args[0],".")) {
if (xboard) {
end_time=ReadClock(time_type);
time_used=(end_time-start_time);
printf("stat01: %d ",time_used);
printf("%d ",tree->nodes_searched);
printf("%d ",iteration_depth);
for (left=0,mvp=tree->last[0];mvp<tree->last[1];mvp++)
if (!tree->searched_this_root_move[mvp-tree->last[0]]) left++;
printf("%d %d\n",left,tree->last[1]-tree->last[0]);
fflush(stdout);
break;
}
else {
end_time=ReadClock(time_type);
time_used=(end_time-start_time);
printf("time:%s ",DisplayTime(time_used));
printf("nodes:%d\n",tree->nodes_searched);
DisplayTreeState(local[0],1,0,ply);
}
}
/*
----------------------------------------------------------
| |
| "mn" command is used to set the move number to a |
| specific value... |
| |
----------------------------------------------------------
*/
else if (!strcmp("mn",args[0])) {
if (nargs == 2) {
move_number=atoi(args[1]);
Print(4095,"move number set to %d\n",move_number);
}
}
/*
----------------------------------------------------------
| |
| "?" command says "move now!" |
| |
----------------------------------------------------------
*/
else if (!strcmp(args[0],"?")) {
if (thinking) {
time_abort=1;
abort_search=1;
}
}
/*
----------------------------------------------------------
| |
| next see if Option() recognizes this as a command. |
| |
----------------------------------------------------------
*/
else {
save_move_number=move_number;
if (!wtm) move_number--;
result=Option(tree);
move_number=save_move_number;
if (result >= 2) {
if (thinking && result!=3)
Print(4095,"command not legal now.\n");
else {
abort_search=1;
analyze_move_read=1;
break;
}
}
else if ((result != 1) && analyze_mode) {
abort_search=1;
analyze_move_read=1;
break;
}
/*
----------------------------------------------------------
| |
| now, check to see if the operator typed a move. if |
| so, and it matched the predicted move, switch from |
| pondering to thinking to start the timer. if the |
| is a move, but not the predicted move, abort the |
| search, and start over with the right move. |
| |
----------------------------------------------------------
*/
else if (!result) {
if (pondering) {
nargs=ReadParse(buffer,args," ;");
temp=InputMove(tree,args[0],0,ChangeSide(root_wtm),1,1);
if (temp) {
if (auto232) {
char *mv=OutputMoveICS(tree,temp);
Delay232(auto232_delay);
if (!wtm) fprintf(auto_file,"\t");
fprintf(auto_file, " %c%c-%c%c", mv[0], mv[1], mv[2], mv[3]);
if ((mv[4] != ' ') && (mv[4] != 0))
fprintf(auto_file, "/%c", mv[4]);
fprintf(auto_file, "\n");
fflush(auto_file);
}
if ((From(temp) == From(ponder_move)) &&
(To(temp) == To(ponder_move)) &&
(Piece(temp) == Piece(ponder_move)) &&
(Captured(temp) == Captured(ponder_move)) &&
(Promote(temp) == Promote(ponder_move))) {
predicted++;
made_predicted_move=1;
pondering=0;
thinking=1;
opponent_end_time=ReadClock(elapsed);
program_start_time=ReadClock(time_type);
Print(128,"predicted move made.\n");
}
else {
abort_search=1;
break;
}
}
else if (!strcmp(args[0],"go") || !strcmp(args[0],"move") ||
!strcmp(args[0],"SP")) {
abort_search=1;
break;
}
else {
Print(4095,"Illegal move: %s\n", args[0]);
if (log_file) DisplayChessBoard(log_file,tree->pos);
}
}
else Print(4095,"unrecognized/illegal command: %s\n", args[0]);
}
}
} while (1);
if (log_file) fflush(log_file);
busy=0;
}
/*
********************************************************************************
* *
* SignalInterrupt() is used to catch SIGINT and SIGTERM which are used by *
* Xboard. SIGINT is used when the operator clicks the "move now" button, *
* while SIGTERM is used to detect when Crafty is terminating. *
* *
********************************************************************************
*/
#if defined(NT_i386) || defined(NT_AXP)
void _cdecl SignalInterrupt(int signal_type)
#else
void SignalInterrupt(int signal_type)
#endif
{
switch (signal_type) {
case SIGINT:
if (xboard) {
if (thinking) {
time_abort=1;
abort_search=1;
}
signal(SIGINT,SignalInterrupt);
break;
}
break;
default:
break;
}
}
|
