contrib/bind-9.2.4rc7/lib/isc/include/isc/heap.h

   1 /*
   2  * Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 1997-2001  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  10  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  11  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  12  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  13  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  14  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  15  * PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 /* $Id: heap.h,v 1.16.2.1 2004/03/09 06:11:56 marka Exp $ */
  19
  20 #ifndef ISC_HEAP_H
  21 #define ISC_HEAP_H 1
  22
  23 #include <isc/lang.h>
  24 #include <isc/types.h>
  25
  26 ISC_LANG_BEGINDECLS
  27
  28 /*
  29  * The comparision function returns ISC_TRUE if the first argument has
  30  * higher priority than the second argument, and ISC_FALSE otherwise.
  31  */
  32 typedef isc_boolean_t (*isc_heapcompare_t)(void *, void *);
  33
  34 typedef void (*isc_heapindex_t)(void *, unsigned int);
  35 typedef void (*isc_heapaction_t)(void *, void *);
  36
  37 typedef struct isc_heap isc_heap_t;
  38
  39 isc_result_t    isc_heap_create(isc_mem_t *, isc_heapcompare_t,
  40                                 isc_heapindex_t, unsigned int, isc_heap_t **);
  41 void            isc_heap_destroy(isc_heap_t **);
  42 isc_result_t    isc_heap_insert(isc_heap_t *, void *);
  43 void            isc_heap_delete(isc_heap_t *, unsigned int);
  44 void            isc_heap_increased(isc_heap_t *, unsigned int);
  45 void            isc_heap_decreased(isc_heap_t *, unsigned int);
  46 void *          isc_heap_element(isc_heap_t *, unsigned int);
  47 void            isc_heap_foreach(isc_heap_t *, isc_heapaction_t, void *);
  48
  49 ISC_LANG_ENDDECLS
  50
  51 #endif /* ISC_HEAP_H */