52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
/*
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* Copyright (C) 1997, 1998, 1999, 2000 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#ifndef ISC_HEAP_H
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#define ISC_HEAP_H 1
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#include <isc/lang.h>
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#include <isc/result.h>
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#include <isc/boolean.h>
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#include <isc/mem.h>
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ISC_LANG_BEGINDECLS
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/*
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* The comparision function returns ISC_TRUE if the first argument has
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* higher priority than the second argument, and ISC_FALSE otherwise.
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*/
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typedef isc_boolean_t (*isc_heapcompare_t)(void *, void *);
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typedef void (*isc_heapindex_t)(void *, unsigned int);
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typedef void (*isc_heapaction_t)(void *, void *);
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typedef struct isc_heap isc_heap_t;
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isc_result_t isc_heap_create(isc_mem_t *, isc_heapcompare_t,
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isc_heapindex_t, unsigned int, isc_heap_t **);
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void isc_heap_destroy(isc_heap_t **);
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isc_result_t isc_heap_insert(isc_heap_t *, void *);
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void isc_heap_delete(isc_heap_t *, unsigned int);
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void isc_heap_increased(isc_heap_t *, unsigned int);
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void isc_heap_decreased(isc_heap_t *, unsigned int);
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void * isc_heap_element(isc_heap_t *, unsigned int);
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void isc_heap_foreach(isc_heap_t *, isc_heapaction_t, void *);
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ISC_LANG_ENDDECLS
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#endif /* ISC_HEAP_H */
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