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Imported Upstream version 1.9.0+dfsg1
[rustc.git] / src / jemalloc / include / jemalloc / internal / ql.h
CommitLineData
54a0048b 1/* List definitions. */
1a4d82fc 2#define ql_head(a_type) \
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3struct { \
4 a_type *qlh_first; \
5}
6
1a4d82fc 7#define ql_head_initializer(a_head) {NULL}
970d7e83 8
1a4d82fc 9#define ql_elm(a_type) qr(a_type)
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10
11/* List functions. */
1a4d82fc 12#define ql_new(a_head) do { \
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13 (a_head)->qlh_first = NULL; \
14} while (0)
15
1a4d82fc 16#define ql_elm_new(a_elm, a_field) qr_new((a_elm), a_field)
970d7e83 17
1a4d82fc 18#define ql_first(a_head) ((a_head)->qlh_first)
970d7e83 19
1a4d82fc 20#define ql_last(a_head, a_field) \
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21 ((ql_first(a_head) != NULL) \
22 ? qr_prev(ql_first(a_head), a_field) : NULL)
23
1a4d82fc 24#define ql_next(a_head, a_elm, a_field) \
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25 ((ql_last(a_head, a_field) != (a_elm)) \
26 ? qr_next((a_elm), a_field) : NULL)
27
1a4d82fc 28#define ql_prev(a_head, a_elm, a_field) \
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29 ((ql_first(a_head) != (a_elm)) ? qr_prev((a_elm), a_field) \
30 : NULL)
31
1a4d82fc 32#define ql_before_insert(a_head, a_qlelm, a_elm, a_field) do { \
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33 qr_before_insert((a_qlelm), (a_elm), a_field); \
34 if (ql_first(a_head) == (a_qlelm)) { \
35 ql_first(a_head) = (a_elm); \
36 } \
37} while (0)
38
1a4d82fc 39#define ql_after_insert(a_qlelm, a_elm, a_field) \
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40 qr_after_insert((a_qlelm), (a_elm), a_field)
41
1a4d82fc 42#define ql_head_insert(a_head, a_elm, a_field) do { \
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43 if (ql_first(a_head) != NULL) { \
44 qr_before_insert(ql_first(a_head), (a_elm), a_field); \
45 } \
46 ql_first(a_head) = (a_elm); \
47} while (0)
48
1a4d82fc 49#define ql_tail_insert(a_head, a_elm, a_field) do { \
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50 if (ql_first(a_head) != NULL) { \
51 qr_before_insert(ql_first(a_head), (a_elm), a_field); \
52 } \
53 ql_first(a_head) = qr_next((a_elm), a_field); \
54} while (0)
55
1a4d82fc 56#define ql_remove(a_head, a_elm, a_field) do { \
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57 if (ql_first(a_head) == (a_elm)) { \
58 ql_first(a_head) = qr_next(ql_first(a_head), a_field); \
59 } \
60 if (ql_first(a_head) != (a_elm)) { \
61 qr_remove((a_elm), a_field); \
62 } else { \
63 ql_first(a_head) = NULL; \
64 } \
65} while (0)
66
1a4d82fc 67#define ql_head_remove(a_head, a_type, a_field) do { \
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68 a_type *t = ql_first(a_head); \
69 ql_remove((a_head), t, a_field); \
70} while (0)
71
1a4d82fc 72#define ql_tail_remove(a_head, a_type, a_field) do { \
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73 a_type *t = ql_last(a_head, a_field); \
74 ql_remove((a_head), t, a_field); \
75} while (0)
76
1a4d82fc 77#define ql_foreach(a_var, a_head, a_field) \
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78 qr_foreach((a_var), ql_first(a_head), a_field)
79
1a4d82fc 80#define ql_reverse_foreach(a_var, a_head, a_field) \
970d7e83 81 qr_reverse_foreach((a_var), ql_first(a_head), a_field)