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Annotation of sys/dev/raidframe/rf_shutdown.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: rf_shutdown.c,v 1.5 2002/12/16 07:01:05 tdeval Exp $  */
        !             2: /*     $NetBSD: rf_shutdown.c,v 1.6 2000/01/13 23:41:18 oster Exp $    */
        !             3:
        !             4: /*
        !             5:  * rf_shutdown.c
        !             6:  */
        !             7: /*
        !             8:  * Copyright (c) 1996 Carnegie-Mellon University.
        !             9:  * All rights reserved.
        !            10:  *
        !            11:  * Author: Jim Zelenka
        !            12:  *
        !            13:  * Permission to use, copy, modify and distribute this software and
        !            14:  * its documentation is hereby granted, provided that both the copyright
        !            15:  * notice and this permission notice appear in all copies of the
        !            16:  * software, derivative works or modified versions, and any portions
        !            17:  * thereof, and that both notices appear in supporting documentation.
        !            18:  *
        !            19:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            20:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
        !            21:  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            22:  *
        !            23:  * Carnegie Mellon requests users of this software to return to
        !            24:  *
        !            25:  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
        !            26:  *  School of Computer Science
        !            27:  *  Carnegie Mellon University
        !            28:  *  Pittsburgh PA 15213-3890
        !            29:  *
        !            30:  * any improvements or extensions that they make and grant Carnegie the
        !            31:  * rights to redistribute these changes.
        !            32:  */
        !            33: /*
        !            34:  * Maintain lists of cleanup functions. Also, mechanisms for coordinating
        !            35:  * thread startup and shutdown.
        !            36:  */
        !            37:
        !            38: #include "rf_types.h"
        !            39: #include "rf_threadstuff.h"
        !            40: #include "rf_shutdown.h"
        !            41: #include "rf_debugMem.h"
        !            42: #include "rf_freelist.h"
        !            43:
        !            44: void rf_FreeShutdownEnt(RF_ShutdownList_t *);
        !            45: void
        !            46: rf_FreeShutdownEnt(RF_ShutdownList_t *ent)
        !            47: {
        !            48:        FREE(ent, M_RAIDFRAME);
        !            49: }
        !            50:
        !            51: int
        !            52: _rf_ShutdownCreate(RF_ShutdownList_t **listp, void (*cleanup) (void *arg),
        !            53:     void *arg, char *file, int line)
        !            54: {
        !            55:        RF_ShutdownList_t *ent;
        !            56:
        !            57:        /*
        !            58:          * Have to directly allocate memory here, since we start up before
        !            59:          * and shutdown after RAIDframe internal allocation system.
        !            60:          */
        !            61:        /* ent = (RF_ShutdownList_t *) malloc(sizeof(RF_ShutdownList_t),
        !            62:         *     M_RAIDFRAME, M_WAITOK); */
        !            63:        ent = (RF_ShutdownList_t *) malloc(sizeof(RF_ShutdownList_t),
        !            64:            M_RAIDFRAME, M_NOWAIT);
        !            65:        if (ent == NULL)
        !            66:                return (ENOMEM);
        !            67:        ent->cleanup = cleanup;
        !            68:        ent->arg = arg;
        !            69:        ent->file = file;
        !            70:        ent->line = line;
        !            71:        ent->next = *listp;
        !            72:        *listp = ent;
        !            73:        return (0);
        !            74: }
        !            75:
        !            76: int
        !            77: rf_ShutdownList(RF_ShutdownList_t **list)
        !            78: {
        !            79:        RF_ShutdownList_t *r, *next;
        !            80:        char *file;
        !            81:        int line;
        !            82:
        !            83:        for (r = *list; r; r = next) {
        !            84:                next = r->next;
        !            85:                file = r->file;
        !            86:                line = r->line;
        !            87:
        !            88:                if (rf_shutdownDebug) {
        !            89:                        printf("call shutdown, created %s:%d\n", file, line);
        !            90:                }
        !            91:                r->cleanup(r->arg);
        !            92:
        !            93:                if (rf_shutdownDebug) {
        !            94:                        printf("completed shutdown, created %s:%d\n", file,
        !            95:                            line);
        !            96:                }
        !            97:                rf_FreeShutdownEnt(r);
        !            98:        }
        !            99:        *list = NULL;
        !           100:        return (0);
        !           101: }