1/*
2 * CDDL HEADER START
3 *
4 * This file and its contents are supplied under the terms of the
5 * Common Development and Distribution License ("CDDL"), version 1.0.
6 * You may only use this file in accordance with the terms of version
7 * 1.0 of the CDDL.
8 *
9 * A full copy of the text of the CDDL should have accompanied this
10 * source. A copy of the CDDL is also available via the Internet at
11 * http://www.illumos.org/license/CDDL.
12 *
13 * CDDL HEADER END
14 */
15
16/*
17 * Copyright (c) 2012 by Delphix. All rights reserved.
18 */
19
20#ifndef _DT_PQ_H
21#define _DT_PQ_H
22
23#include <dtrace.h>
24
25#ifdef __cplusplus
26extern "C" {
27#endif
28
29typedef uint64_t (*dt_pq_value_f)(void *, void *);
30
31typedef struct dt_pq {
32 dtrace_hdl_t *dtpq_hdl; /* dtrace handle */
33 void **dtpq_items; /* array of elements */
34 uint_t dtpq_size; /* count of allocated elements */
35 uint_t dtpq_last; /* next free slot */
36 dt_pq_value_f dtpq_value; /* callback to get the value */
37 void *dtpq_arg; /* callback argument */
38} dt_pq_t;
39
40extern dt_pq_t *dt_pq_init(dtrace_hdl_t *, uint_t size, dt_pq_value_f, void *);
41extern void dt_pq_fini(dt_pq_t *);
42
43extern void dt_pq_insert(dt_pq_t *, void *);
44extern void *dt_pq_pop(dt_pq_t *);
45extern void *dt_pq_walk(dt_pq_t *, uint_t *);
46
47#ifdef __cplusplus
48}
49#endif
50
51#endif /* _DT_PQ_H */
52