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Annotation of 43BSDReno/games/sail/pl_1.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1983 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms are permitted
                      6:  * provided that: (1) source distributions retain this entire copyright
                      7:  * notice and comment, and (2) distributions including binaries display
                      8:  * the following acknowledgement:  ``This product includes software
                      9:  * developed by the University of California, Berkeley and its contributors''
                     10:  * in the documentation or other materials provided with the distribution
                     11:  * and in all advertising materials mentioning features or use of this
                     12:  * software. Neither the name of the University nor the names of its
                     13:  * contributors may be used to endorse or promote products derived
                     14:  * from this software without specific prior written permission.
                     15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     18:  */
                     19: 
                     20: #ifndef lint
                     21: static char sccsid[] = "@(#)pl_1.c     5.4 (Berkeley) 6/1/90";
                     22: #endif /* not lint */
                     23: 
                     24: #include "player.h"
                     25: #include <sys/types.h>
                     26: #include <sys/wait.h>
                     27: 
                     28: /*
                     29:  * If we get here before a ship is chosen, then ms == 0 and
                     30:  * we don't want to update the score file, or do any Write's either.
                     31:  * We can assume the sync file is already created and may need
                     32:  * to be removed.
                     33:  * Of course, we don't do any more Sync()'s if we got here
                     34:  * because of a Sync() failure.
                     35:  */
                     36: leave(conditions)
                     37: int conditions;
                     38: {
                     39:        (void) signal(SIGHUP, SIG_IGN);
                     40:        (void) signal(SIGINT, SIG_IGN);
                     41:        (void) signal(SIGQUIT, SIG_IGN);
                     42:        (void) signal(SIGALRM, SIG_IGN);
                     43:        (void) signal(SIGCHLD, SIG_IGN);
                     44: 
                     45:        if (done_curses) {
                     46:                Signal("It looks like you've had it!",
                     47:                        (struct ship *)0);
                     48:                switch (conditions) {
                     49:                case LEAVE_QUIT:
                     50:                        break;
                     51:                case LEAVE_CAPTURED:
                     52:                        Signal("Your ship was captured.",
                     53:                                (struct ship *)0);
                     54:                        break;
                     55:                case LEAVE_HURRICAN:
                     56:                        Signal("Hurricane!  All ships destroyed.",
                     57:                                (struct ship *)0);
                     58:                        break;
                     59:                case LEAVE_DRIVER:
                     60:                        Signal("The driver died.", (struct ship *)0);
                     61:                        break;
                     62:                case LEAVE_SYNC:
                     63:                        Signal("Synchronization error.", (struct ship *)0);
                     64:                        break;
                     65:                default:
                     66:                        Signal("A funny thing happened (%d).",
                     67:                                (struct ship *)0, conditions);
                     68:                }
                     69:        } else {
                     70:                switch (conditions) {
                     71:                case LEAVE_QUIT:
                     72:                        break;
                     73:                case LEAVE_DRIVER:
                     74:                        printf("The driver died.\n");
                     75:                        break;
                     76:                case LEAVE_FORK:
                     77:                        perror("fork");
                     78:                        break;
                     79:                case LEAVE_SYNC:
                     80:                        printf("Synchronization error\n.");
                     81:                        break;
                     82:                default:
                     83:                        printf("A funny thing happened (%d).\n",
                     84:                                conditions);
                     85:                }
                     86:        }
                     87: 
                     88:        if (ms != 0) {
                     89:                log(ms);
                     90:                if (conditions != LEAVE_SYNC) {
                     91:                        makesignal(ms, "Captain %s relinquishing.",
                     92:                                (struct ship *)0, mf->captain);
                     93:                        Write(W_END, ms, 0, 0, 0, 0, 0);
                     94:                        (void) Sync();
                     95:                }
                     96:        }
                     97:        sync_close(!hasdriver);
                     98:        cleanupscreen();
                     99:        exit(0);
                    100: }
                    101: 
                    102: choke()
                    103: {
                    104:        leave(LEAVE_QUIT);
                    105: }
                    106: 
                    107: child()
                    108: {
                    109:        union wait status;
                    110:        int pid;
                    111: 
                    112:        (void) signal(SIGCHLD, SIG_IGN);
                    113:        do {
                    114:                pid = wait3(&status, WNOHANG, (struct rusage *)0);
                    115:                if (pid < 0 || pid > 0 && !WIFSTOPPED(status))
                    116:                        hasdriver = 0;
                    117:        } while (pid > 0);
                    118:        (void) signal(SIGCHLD, child);
                    119: }

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