1#ifndef JEMALLOC_INTERNAL_QL_H
2#define JEMALLOC_INTERNAL_QL_H
3
4#include "jemalloc/internal/qr.h"
5
6/* List definitions. */
7#define ql_head(a_type)							\
8struct {								\
9	a_type *qlh_first;						\
10}
11
12#define ql_head_initializer(a_head) {NULL}
13
14#define ql_elm(a_type)	qr(a_type)
15
16/* List functions. */
17#define ql_new(a_head) do {						\
18	(a_head)->qlh_first = NULL;					\
19} while (0)
20
21#define ql_elm_new(a_elm, a_field) qr_new((a_elm), a_field)
22
23#define ql_first(a_head) ((a_head)->qlh_first)
24
25#define ql_last(a_head, a_field)					\
26	((ql_first(a_head) != NULL)					\
27	    ? qr_prev(ql_first(a_head), a_field) : NULL)
28
29#define ql_next(a_head, a_elm, a_field)					\
30	((ql_last(a_head, a_field) != (a_elm))				\
31	    ? qr_next((a_elm), a_field)	: NULL)
32
33#define ql_prev(a_head, a_elm, a_field)					\
34	((ql_first(a_head) != (a_elm)) ? qr_prev((a_elm), a_field)	\
35				       : NULL)
36
37#define ql_before_insert(a_head, a_qlelm, a_elm, a_field) do {		\
38	qr_before_insert((a_qlelm), (a_elm), a_field);			\
39	if (ql_first(a_head) == (a_qlelm)) {				\
40		ql_first(a_head) = (a_elm);				\
41	}								\
42} while (0)
43
44#define ql_after_insert(a_qlelm, a_elm, a_field)			\
45	qr_after_insert((a_qlelm), (a_elm), a_field)
46
47#define ql_head_insert(a_head, a_elm, a_field) do {			\
48	if (ql_first(a_head) != NULL) {					\
49		qr_before_insert(ql_first(a_head), (a_elm), a_field);	\
50	}								\
51	ql_first(a_head) = (a_elm);					\
52} while (0)
53
54#define ql_tail_insert(a_head, a_elm, a_field) do {			\
55	if (ql_first(a_head) != NULL) {					\
56		qr_before_insert(ql_first(a_head), (a_elm), a_field);	\
57	}								\
58	ql_first(a_head) = qr_next((a_elm), a_field);			\
59} while (0)
60
61#define ql_remove(a_head, a_elm, a_field) do {				\
62	if (ql_first(a_head) == (a_elm)) {				\
63		ql_first(a_head) = qr_next(ql_first(a_head), a_field);	\
64	}								\
65	if (ql_first(a_head) != (a_elm)) {				\
66		qr_remove((a_elm), a_field);				\
67	} else {							\
68		ql_first(a_head) = NULL;				\
69	}								\
70} while (0)
71
72#define ql_head_remove(a_head, a_type, a_field) do {			\
73	a_type *t = ql_first(a_head);					\
74	ql_remove((a_head), t, a_field);				\
75} while (0)
76
77#define ql_tail_remove(a_head, a_type, a_field) do {			\
78	a_type *t = ql_last(a_head, a_field);				\
79	ql_remove((a_head), t, a_field);				\
80} while (0)
81
82#define ql_foreach(a_var, a_head, a_field)				\
83	qr_foreach((a_var), ql_first(a_head), a_field)
84
85#define ql_reverse_foreach(a_var, a_head, a_field)			\
86	qr_reverse_foreach((a_var), ql_first(a_head), a_field)
87
88#endif /* JEMALLOC_INTERNAL_QL_H */
89