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rf_shutdown.c revision 1.2 
      1 /*	$NetBSD: rf_shutdown.c,v 1.2 1999/01/14 22:49:05 thorpej Exp $	*/
      2 /*
      3  * rf_shutdown.c
      4  */
      5 /*
      6  * Copyright (c) 1996 Carnegie-Mellon University.
      7  * All rights reserved.
      8  *
      9  * Author: Jim Zelenka
     10  *
     11  * Permission to use, copy, modify and distribute this software and
     12  * its documentation is hereby granted, provided that both the copyright
     13  * notice and this permission notice appear in all copies of the
     14  * software, derivative works or modified versions, and any portions
     15  * thereof, and that both notices appear in supporting documentation.
     16  *
     17  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     18  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     19  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     20  *
     21  * Carnegie Mellon requests users of this software to return to
     22  *
     23  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     24  *  School of Computer Science
     25  *  Carnegie Mellon University
     26  *  Pittsburgh PA 15213-3890
     27  *
     28  * any improvements or extensions that they make and grant Carnegie the
     29  * rights to redistribute these changes.
     30  */
     31 /*
     32  * Maintain lists of cleanup functions. Also, mechanisms for coordinating
     33  * thread startup and shutdown.
     34  */
     35 
     36 #include "rf_types.h"
     37 #include "rf_threadstuff.h"
     38 #include "rf_shutdown.h"
     39 #include "rf_debugMem.h"
     40 #include "rf_freelist.h"
     41 #include "rf_threadid.h"
     42 
     43 static void rf_FreeShutdownEnt(RF_ShutdownList_t *ent)
     44 {
     45 #ifdef KERNEL
     46 #ifdef __NetBSD__
     47   FREE(ent, M_RAIDFRAME);
     48 #else
     49   FREE(ent, M_DEVBUF);
     50 #endif /* __NetBSD__ */
     51 #else /* KERNEL */
     52   free(ent);
     53 #endif /* KERNEL */
     54 }
     55 
     56 int _rf_ShutdownCreate(
     57   RF_ShutdownList_t  **listp,
     58   void               (*cleanup)(void *arg),
     59   void                *arg,
     60   char                *file,
     61   int                  line)
     62 {
     63   RF_ShutdownList_t *ent;
     64 
     65   /*
     66    * Have to directly allocate memory here, since we start up before
     67    * and shutdown after RAIDframe internal allocation system.
     68    */
     69 #ifdef KERNEL
     70 #ifdef __NetBSD__
     71   ent = (RF_ShutdownList_t *)malloc( sizeof(RF_ShutdownList_t), M_RAIDFRAME, M_WAITOK);
     72 #if 0
     73   MALLOC(ent, RF_ShutdownList_t *, sizeof(RF_ShutdownList_t), M_RAIDFRAME, M_WAITOK);
     74 #endif
     75 #else
     76   ent = (RF_ShutdownList_t *)malloc( sizeof(RF_ShutdownList_t), M_DEVBUF, M_WAITOK);
     77 #if 0
     78   MALLOC(ent, RF_ShutdownList_t *, sizeof(RF_ShutdownList_t), M_DEVBUF, M_WAITOK);
     79 #endif
     80 #endif /* __NetBSD__ */
     81 #else /* KERNEL */
     82   ent = (RF_ShutdownList_t *)malloc(sizeof(RF_ShutdownList_t));
     83 #endif /* KERNEL */
     84   if (ent == NULL)
     85     return(ENOMEM);
     86   ent->cleanup = cleanup;
     87   ent->arg = arg;
     88   ent->file = file;
     89   ent->line = line;
     90   ent->next = *listp;
     91   *listp = ent;
     92   return(0);
     93 }
     94 
     95 int rf_ShutdownList(RF_ShutdownList_t **list)
     96 {
     97   RF_ShutdownList_t *r, *next;
     98   char *file;
     99   int line;
    100 
    101   for(r=*list;r;r=next) {
    102     next = r->next;
    103     file = r->file;
    104     line = r->line;
    105 
    106     if (rf_shutdownDebug) {
    107       int tid;
    108       rf_get_threadid(tid);
    109       printf("[%d] call shutdown, created %s:%d\n", tid, file, line);
    110     }
    111 
    112     r->cleanup(r->arg);
    113 
    114     if (rf_shutdownDebug) {
    115       int tid;
    116       rf_get_threadid(tid);
    117       printf("[%d] completed shutdown, created %s:%d\n", tid, file, line);
    118     }
    119 
    120     rf_FreeShutdownEnt(r);
    121   }
    122   *list = NULL;
    123   return(0);
    124 }
    125