Merge commit 'upstream/0.1.7a.dfsg'
[samtools.git] / klist.h
1 #ifndef _LH3_KLIST_H
2 #define _LH3_KLIST_H
3
4 #include <stdlib.h>
5
6 #define KMEMPOOL_INIT(name, kmptype_t, kmpfree_f)                                               \
7         typedef struct {                                                                                                        \
8                 size_t cnt, n, max;                                                                                             \
9                 kmptype_t **buf;                                                                                                \
10         } kmp_##name##_t;                                                                                                       \
11         static inline kmp_##name##_t *kmp_init_##name() {                                       \
12                 return calloc(1, sizeof(kmp_##name##_t));                                               \
13         }                                                                                                                                       \
14         static inline void kmp_destroy_##name(kmp_##name##_t *mp) {                     \
15                 size_t k;                                                                                                               \
16                 for (k = 0; k < mp->n; ++k) {                                                                   \
17                         kmpfree_f(mp->buf[k]); free(mp->buf[k]);                                        \
18                 }                                                                                                                               \
19                 free(mp->buf); free(mp);                                                                                \
20         }                                                                                                                                       \
21         static inline kmptype_t *kmp_alloc_##name(kmp_##name##_t *mp) {         \
22                 ++mp->cnt;                                                                                                              \
23                 if (mp->n == 0) return calloc(1, sizeof(kmptype_t));                    \
24                 return mp->buf[--mp->n];                                                                                \
25         }                                                                                                                                       \
26         static inline void kmp_free_##name(kmp_##name##_t *mp, kmptype_t *p) { \
27                 --mp->cnt;                                                                                                              \
28                 if (mp->n == mp->max) {                                                                                 \
29                         mp->max = mp->max? mp->max<<1 : 16;                                                     \
30                         mp->buf = realloc(mp->buf, sizeof(void*) * mp->max);            \
31                 }                                                                                                                               \
32                 mp->buf[mp->n++] = p;                                                                                   \
33         }
34
35 #define kmempool_t(name) kmp_##name##_t
36 #define kmp_init(name) kmp_init_##name()
37 #define kmp_destroy(name, mp) kmp_destroy_##name(mp)
38 #define kmp_alloc(name, mp) kmp_alloc_##name(mp)
39 #define kmp_free(name, mp, p) kmp_free_##name(mp, p)
40
41 #define KLIST_INIT(name, kltype_t, kmpfree_t)                                                   \
42         struct __kl1_##name {                                                                                           \
43                 kltype_t data;                                                                                                  \
44                 struct __kl1_##name *next;                                                                              \
45         };                                                                                                                                      \
46         typedef struct __kl1_##name kl1_##name;                                                         \
47         KMEMPOOL_INIT(name, kl1_##name, kmpfree_t)                                                      \
48         typedef struct {                                                                                                        \
49                 kl1_##name *head, *tail;                                                                                \
50                 kmp_##name##_t *mp;                                                                                             \
51                 size_t size;                                                                                                    \
52         } kl_##name##_t;                                                                                                        \
53         static inline kl_##name##_t *kl_init_##name() {                                         \
54                 kl_##name##_t *kl = calloc(1, sizeof(kl_##name##_t));                   \
55                 kl->mp = kmp_init(name);                                                                                \
56                 kl->head = kl->tail = kmp_alloc(name, kl->mp);                                  \
57                 kl->head->next = 0;                                                                                             \
58                 return kl;                                                                                                              \
59         }                                                                                                                                       \
60         static inline void kl_destroy_##name(kl_##name##_t *kl) {                       \
61                 kl1_##name *p;                                                                                                  \
62                 for (p = kl->head; p != kl->tail; p = p->next)                                  \
63                         kmp_free(name, kl->mp, p);                                                                      \
64                 kmp_free(name, kl->mp, p);                                                                              \
65                 kmp_destroy(name, kl->mp);                                                                              \
66                 free(kl);                                                                                                               \
67         }                                                                                                                                       \
68         static inline kltype_t *kl_pushp_##name(kl_##name##_t *kl) {            \
69                 kl1_##name *q, *p = kmp_alloc(name, kl->mp);                                    \
70                 q = kl->tail; p->next = 0; kl->tail->next = p; kl->tail = p;    \
71                 ++kl->size;                                                                                                             \
72                 return &q->data;                                                                                                \
73         }                                                                                                                                       \
74         static inline int kl_shift_##name(kl_##name##_t *kl, kltype_t *d) { \
75                 kl1_##name *p;                                                                                                  \
76                 if (kl->head->next == 0) return -1;                                                             \
77                 --kl->size;                                                                                                             \
78                 p = kl->head; kl->head = kl->head->next;                                                \
79                 if (d) *d = p->data;                                                                                    \
80                 kmp_free(name, kl->mp, p);                                                                              \
81                 return 0;                                                                                                               \
82         }
83
84 #define kliter_t(name) kl1_##name
85 #define klist_t(name) kl_##name##_t
86 #define kl_val(iter) ((iter)->data)
87 #define kl_next(iter) ((iter)->next)
88 #define kl_begin(kl) ((kl)->head)
89 #define kl_end(kl) ((kl)->tail)
90
91 #define kl_init(name) kl_init_##name()
92 #define kl_destroy(name, kl) kl_destroy_##name(kl)
93 #define kl_pushp(name, kl) kl_pushp_##name(kl)
94 #define kl_shift(name, kl, d) kl_shift_##name(kl, d)
95
96 #endif