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Annotation of 43BSD/games/sail/pl_1.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  */
        !             6: 
        !             7: #ifndef lint
        !             8: static char sccsid[] = "@(#)pl_1.c     5.1 (Berkeley) 5/29/85";
        !             9: #endif not lint
        !            10: 
        !            11: #include "player.h"
        !            12: #include <sys/types.h>
        !            13: #include <sys/wait.h>
        !            14: 
        !            15: /*
        !            16:  * If we get here before a ship is chosen, then ms == 0 and
        !            17:  * we don't want to update the score file, or do any Write's either.
        !            18:  * We can assume the sync file is already created and may need
        !            19:  * to be removed.
        !            20:  * Of course, we don't do any more Sync()'s if we got here
        !            21:  * because of a Sync() failure.
        !            22:  */
        !            23: leave(conditions)
        !            24: int conditions;
        !            25: {
        !            26:        (void) signal(SIGHUP, SIG_IGN);
        !            27:        (void) signal(SIGINT, SIG_IGN);
        !            28:        (void) signal(SIGQUIT, SIG_IGN);
        !            29:        (void) signal(SIGALRM, SIG_IGN);
        !            30:        (void) signal(SIGCHLD, SIG_IGN);
        !            31: 
        !            32:        if (done_curses) {
        !            33:                Signal("It looks like you've had it!",
        !            34:                        (struct ship *)0);
        !            35:                switch (conditions) {
        !            36:                case LEAVE_QUIT:
        !            37:                        break;
        !            38:                case LEAVE_CAPTURED:
        !            39:                        Signal("Your ship was captured.",
        !            40:                                (struct ship *)0);
        !            41:                        break;
        !            42:                case LEAVE_HURRICAN:
        !            43:                        Signal("Hurricane!  All ships destroyed.",
        !            44:                                (struct ship *)0);
        !            45:                        break;
        !            46:                case LEAVE_DRIVER:
        !            47:                        Signal("The driver died.", (struct ship *)0);
        !            48:                        break;
        !            49:                case LEAVE_SYNC:
        !            50:                        Signal("Synchronization error.", (struct ship *)0);
        !            51:                        break;
        !            52:                default:
        !            53:                        Signal("A funny thing happened (%d).",
        !            54:                                (struct ship *)0, conditions);
        !            55:                }
        !            56:        } else {
        !            57:                switch (conditions) {
        !            58:                case LEAVE_QUIT:
        !            59:                        break;
        !            60:                case LEAVE_DRIVER:
        !            61:                        printf("The driver died.\n");
        !            62:                        break;
        !            63:                case LEAVE_FORK:
        !            64:                        perror("fork");
        !            65:                        break;
        !            66:                case LEAVE_SYNC:
        !            67:                        printf("Synchronization error\n.");
        !            68:                        break;
        !            69:                default:
        !            70:                        printf("A funny thing happened (%d).\n",
        !            71:                                conditions);
        !            72:                }
        !            73:        }
        !            74: 
        !            75:        if (ms != 0) {
        !            76:                log(ms);
        !            77:                if (conditions != LEAVE_SYNC) {
        !            78:                        makesignal(ms, "Captain %s relinquishing.",
        !            79:                                (struct ship *)0, mf->captain);
        !            80:                        Write(W_END, ms, 0, 0, 0, 0, 0);
        !            81:                        (void) Sync();
        !            82:                }
        !            83:        }
        !            84:        sync_close(!hasdriver);
        !            85:        cleanupscreen();
        !            86:        exit(0);
        !            87: }
        !            88: 
        !            89: choke()
        !            90: {
        !            91:        leave(LEAVE_QUIT);
        !            92: }
        !            93: 
        !            94: child()
        !            95: {
        !            96:        union wait status;
        !            97:        int pid;
        !            98: 
        !            99:        (void) signal(SIGCHLD, SIG_IGN);
        !           100:        do {
        !           101:                pid = wait3(&status, WNOHANG, (struct rusage *)0);
        !           102:                if (pid < 0 || pid > 0 && !WIFSTOPPED(status))
        !           103:                        hasdriver = 0;
        !           104:        } while (pid > 0);
        !           105:        (void) signal(SIGCHLD, child);
        !           106: }

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