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Annotation of sys/dev/raidframe/rf_shutdown.c, Revision 1.1.1.1

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: }