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Annotation of 43BSDTahoe/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 the above copyright notice and this paragraph are
                      7:  * duplicated in all such forms and that any documentation,
                      8:  * advertising materials, and other materials related to such
                      9:  * distribution and use acknowledge that the software was developed
                     10:  * by the University of California, Berkeley.  The name of the
                     11:  * University may not be used to endorse or promote products derived
                     12:  * from this software without specific prior written permission.
                     13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     16:  */
                     17: 
                     18: #ifndef lint
                     19: static char sccsid[] = "@(#)pl_1.c     5.3 (Berkeley) 6/18/88";
                     20: #endif /* not lint */
                     21: 
                     22: #include "player.h"
                     23: #include <sys/types.h>
                     24: #include <sys/wait.h>
                     25: 
                     26: /*
                     27:  * If we get here before a ship is chosen, then ms == 0 and
                     28:  * we don't want to update the score file, or do any Write's either.
                     29:  * We can assume the sync file is already created and may need
                     30:  * to be removed.
                     31:  * Of course, we don't do any more Sync()'s if we got here
                     32:  * because of a Sync() failure.
                     33:  */
                     34: leave(conditions)
                     35: int conditions;
                     36: {
                     37:        (void) signal(SIGHUP, SIG_IGN);
                     38:        (void) signal(SIGINT, SIG_IGN);
                     39:        (void) signal(SIGQUIT, SIG_IGN);
                     40:        (void) signal(SIGALRM, SIG_IGN);
                     41:        (void) signal(SIGCHLD, SIG_IGN);
                     42: 
                     43:        if (done_curses) {
                     44:                Signal("It looks like you've had it!",
                     45:                        (struct ship *)0);
                     46:                switch (conditions) {
                     47:                case LEAVE_QUIT:
                     48:                        break;
                     49:                case LEAVE_CAPTURED:
                     50:                        Signal("Your ship was captured.",
                     51:                                (struct ship *)0);
                     52:                        break;
                     53:                case LEAVE_HURRICAN:
                     54:                        Signal("Hurricane!  All ships destroyed.",
                     55:                                (struct ship *)0);
                     56:                        break;
                     57:                case LEAVE_DRIVER:
                     58:                        Signal("The driver died.", (struct ship *)0);
                     59:                        break;
                     60:                case LEAVE_SYNC:
                     61:                        Signal("Synchronization error.", (struct ship *)0);
                     62:                        break;
                     63:                default:
                     64:                        Signal("A funny thing happened (%d).",
                     65:                                (struct ship *)0, conditions);
                     66:                }
                     67:        } else {
                     68:                switch (conditions) {
                     69:                case LEAVE_QUIT:
                     70:                        break;
                     71:                case LEAVE_DRIVER:
                     72:                        printf("The driver died.\n");
                     73:                        break;
                     74:                case LEAVE_FORK:
                     75:                        perror("fork");
                     76:                        break;
                     77:                case LEAVE_SYNC:
                     78:                        printf("Synchronization error\n.");
                     79:                        break;
                     80:                default:
                     81:                        printf("A funny thing happened (%d).\n",
                     82:                                conditions);
                     83:                }
                     84:        }
                     85: 
                     86:        if (ms != 0) {
                     87:                log(ms);
                     88:                if (conditions != LEAVE_SYNC) {
                     89:                        makesignal(ms, "Captain %s relinquishing.",
                     90:                                (struct ship *)0, mf->captain);
                     91:                        Write(W_END, ms, 0, 0, 0, 0, 0);
                     92:                        (void) Sync();
                     93:                }
                     94:        }
                     95:        sync_close(!hasdriver);
                     96:        cleanupscreen();
                     97:        exit(0);
                     98: }
                     99: 
                    100: choke()
                    101: {
                    102:        leave(LEAVE_QUIT);
                    103: }
                    104: 
                    105: child()
                    106: {
                    107:        union wait status;
                    108:        int pid;
                    109: 
                    110:        (void) signal(SIGCHLD, SIG_IGN);
                    111:        do {
                    112:                pid = wait3(&status, WNOHANG, (struct rusage *)0);
                    113:                if (pid < 0 || pid > 0 && !WIFSTOPPED(status))
                    114:                        hasdriver = 0;
                    115:        } while (pid > 0);
                    116:        (void) signal(SIGCHLD, child);
                    117: }

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