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 26 extern "C" { 27 #endif 28 29 typedef uint64_t (*dt_pq_value_f)(void *, void *); 30 31 typedef 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 40 extern dt_pq_t *dt_pq_init(dtrace_hdl_t *, uint_t size, dt_pq_value_f, void *); 41 extern void dt_pq_fini(dt_pq_t *); 42 43 extern void dt_pq_insert(dt_pq_t *, void *); 44 extern void *dt_pq_pop(dt_pq_t *); 45 extern void *dt_pq_walk(dt_pq_t *, uint_t *); 46 47 #ifdef __cplusplus 48 } 49 #endif 50 51 #endif /* _DT_PQ_H */ 52