arlad/poller.h

   1 /*
   2  * Copyright (c) 2002, Stockholms universitet
   3  * (Stockholm University, Stockholm Sweden)
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the university nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  25  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31  * POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #ifndef _ARLA_POLLER_H
  35 #define _ARLA_POLLER_H 1
  36
  37 typedef struct {
  38     uint32_t server; /* XXX replace with server ref entry */
  39     int32_t cell;
  40     int refcount;
  41     time_t timeout;
  42     heap_ptr heapptr;
  43 } PollerEntry;
  44
  45 void
  46 poller_init (void);
  47
  48 PollerEntry *
  49 poller_add_conn(ConnCacheEntry *conn);
  50
  51 int32_t
  52 poller_host2cell(uint32_t server);
  53
  54 typedef int (*poller_iter_func)(uint32_t cell, uint32_t conn, void *arg);
  55
  56 int
  57 poller_foreach(poller_iter_func iter_func, void *arg);
  58
  59 #if 0
  60 int32_t
  61 poller_get_cell_by_uuid(afsUUID *server);
  62 #endif
  63
  64 void
  65 poller_remove(PollerEntry *e);
  66
  67 #endif /* _ARLA_POLLER_H */